B2-1

BC Hydro/Alcan 2007 Electricity Purchase Agreement

Alcan Report

in support of BC Hydro’s Filing under

Section 71 of the Utilities Commission Act

21 September 2007

TABLE OF CONTENTS

1. Overview ................................................................................................................ 1 1.1 Introduction........................................................................................................... 1 1.2 Relief Sought ........................................................................................................ 1 1.3 Circumstances Leading to the 2007 EPA ............................................................. 1 1.4 Reasons for Accepting 2007 EPA ........................................................................ 2 1.5 Outline of Alcan’s Report ...................................................................................... 3 1.6 Contact Information .............................................................................................. 4

2. Alcan Company Profile......................................................................................... 5 3. Alcan’s Operations ............................................................................................... 5

3.1 Worldwide............................................................................................................. 5 3.2 British Columbia ................................................................................................... 7

(a) Kitimat Smelter................................................................................................ 8 (b) Kemano System.............................................................................................. 9 (c) Scale of Alcan’s Operations in British Columbia ........................................... 18

4. Alcan’s Kemano System .................................................................................... 19 4.1 Nature and Quality of the Kemano System ........................................................ 19 4.2 Kemano System Basic Parameters .................................................................... 20 4.3 Reservoir Hydrology ........................................................................................... 24 4.4 Alcan Water Management System and Operating Regime ................................ 24 4.5 Analysis of the Kemano System Generating Capacity ....................................... 25 4.6 Safety of People and Facilities ........................................................................... 27 4.7 Protection of Fish and Fish Habitat..................................................................... 27 4.8 Water Rental Rates ............................................................................................ 28 4.9 Kemano Powerhouse Generating Efficiency ...................................................... 29 4.10 Kemano System Operating Record .................................................................... 29

5. The Modernization Project ................................................................................. 30 5.1 Overview of the Modernization Project ............................................................... 30 5.2 Improved Operating Efficiencies and Performance ............................................ 32

(a) Power Consumption...................................................................................... 32 (b) Environmental Performance.......................................................................... 32 (c) Operational Infrastructure.............................................................................. 33 (d) Labour Requirements.................................................................................... 33

6. 2007 EPA Relationship to the Modernization Project ...................................... 34 7. Availability of Kemano Power for the 2007 EPA............................................... 35

7.1 Power Requirements for the Current Kitimat Smelter......................................... 35 (a) Aluminum smelting process .......................................................................... 35 (b) Smelter power requirements and smelter design .......................................... 37

7.2 Power Requirements during Construction of the Modernization Project............. 39 7.3 Power Requirements after completion of the Modernization Project .................. 41 7.4 Kitimat Smelter Operation after Modernization ................................................... 41

8. Alcan Power Sales .............................................................................................. 42 8.1 Development of the North Coast Grid................................................................. 42 8.2 Interconnection with BC Hydro’s System............................................................ 43 8.3 Power Sales to BC Hydro and to Powerex ......................................................... 44

LIST OF FIGURES

Figure 1 - Map showing location of Alcan facilities in B.C. .............................................. 7 Figure 2 - Aerial view of the Kitimat Smelter ................................................................... 8 Figure 3 - Kemano System.............................................................................................. 9 Figure 4 - Kenney Dam ................................................................................................. 10 Figure 5 - Skins Lake Spillway ...................................................................................... 11 Figure 6 - Tahtsa Intake ................................................................................................ 12 Figure 7 - Kemano Powerhouse.................................................................................... 14 Figure 8 - Aluminum manufacturing process................................................................. 36 Figure 9 - Power available for sale during construction................................................. 40

LIST OF APPENDICES

Appendix A - Alcan’s Final Water Licence Appendix B - Inflows information from 1931 to 2006, with supporting data Appendix C - Power deliveries to Kitimat Smelter and to BC Hydro Appendix D - Total planned outage hours during the period January 1994 to April 2007 Appendix E - Annual aluminium production at Kitimat Smelter from 1954 – 2006 Appendix F - Capacity of transmission lines from Kemano to Prince George Appendix G - Alcan Powerpoint Presentation at Sept. 12th 2007 Workshop

1. OVERVIEW 1.1 Introduction Alcan Inc. (“Alcan”) and BC Hydro have entered into a long-term energy purchase

agreement (“2007 EPA”), a copy of which is being filed by BC Hydro pursuant to section

71 of the Utilities Commission Act. As a counterparty to the 2007 EPA, Alcan is filing

this report in support of BC Hydro’s filing.

Alcan has co-ordinated its report with BC Hydro to complement the information provided

by BC Hydro so the Commission has a comprehensive record from the perspective of

the purchaser and the seller for its review of the 2007 EPA. Alcan’s report focuses on

information about Alcan’s Kemano System and Kitimat Smelter operations because

Alcan is in the best position to provide this information to assist the Commission in its

review of the 2007 EPA. This overview outlines the structure of Alcan's report.

1.2 Relief Sought

Alcan supports BC Hydro’s request that the Commission accept the 2007 EPA for filing

under s. 71 of the Utilities Commission Act (“Act”).

1.3 Circumstances Leading to the 2007 EPA

In 2006, Alcan and BC Hydro negotiated a long-term energy purchase agreement

(“LTEPA+”). LTEPA+ was negotiated in the context of Alcan’s plans to modernize the

Kitimat Smelter (“Modernization Project”). BC Hydro filed LTEPA+ with the Commission

under section 71 of the Act in August 2006, and the Commission convened a review

during the later part of 2006. Ultimately, the Commission disallowed LTEPA+.

BC Hydro and Alcan considered the Commission's reasons for decision and concluded

that a restructured and expanded energy supply contract could be negotiated that met

the needs of both BC Hydro and Alcan while responding to the concerns expressed by

the Commission. The 2007 EPA is the result of those negotiations.

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1.4 Reasons for Accepting 2007 EPA

Alcan submits that the 2007 EPA is in the public interest and should be accepted under

section 71 of the Act because it satisfies the requirements of section 71 in terms of the

quantity, quality, availability, reliability and cost of the Kemano System power. The

reports from BC Hydro and Alcan elaborate on these points. In summary, the key

points are:

• The quality of the Kemano System power is very high. The Kemano System is

an extremely efficient and reliable generation system.

• The Kemano System is an existing renewable resource in British Columbia with

no development or timing risk.

• The Alcan and BC Hydro system are already interconnected and capable of

delivering the 2007 EPA services.

• Alcan has over 50 years of operating history with the Kemano System so the

characteristics and generating capacity of the system are well understood.

• Alcan and BC Hydro have a long history of cooperation on the operation of the

Kemano System to provide energy and support to BC Hydro’s system. Given

that the Kemano System is located at the end of the BC Hydro’s transmission

line from Prince George, it provides a critical source of local reliability and

reactive support to the BC Hydro system. As a result, BC Hydro customers

receive better and more reliable service than they would otherwise. The 2007

EPA will formalize and enhance services that Alcan has provided on an informal

basis.

• The 2007 EPA is a package of high value products, including scheduling,

capacity, equichange and co-ordination rights that few other resources can offer.

Increasing the coordination between the systems of Alcan and BC Hydro will

enhance the efficiency and benefits of both systems.

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• Alcan’s Kemano System fits well with the objectives in the Provincial

Government’s Energy Plan II. Energy Policy #25 explicitly refers to the value of

large hydro with storage:

Wind and run of river small-hydro generators also provide a less valuable product individually than do large hydro facilities with storage, since these large hydro facilities combine flexibility benefits with the “firmness” attributes of thermal generation resources.

Alcan has sold electricity to BC Hydro or its predecessor since 1961. Alcan's long-

standing relationship as a supplier to BC Hydro has served both BC Hydro and Alcan

well. Alcan's Kemano System is an efficient and reliable generation source for BC

Hydro, and it is the only significant supply of electricity in the North Coast region.

From Alcan’s perspective, on-going power sales will continue to contribute to the

economic viability of Alcan’s Kitimat Smelter operations. The 2007 EPA has particular

importance to the economic viability of the Modernization Project. Monetizing the power

sales by way of a long-term contract will provide a predictable revenue stream to assist

with the large investment necessary to convert the existing smelting capacity to modern

technology.

1.5 Outline of Alcan’s Report

The balance of this report provides greater details on the following areas to explain

Alcan’s perspective as the seller under the 2007 EPA:

• Alcan’s corporate profile;

• Alcan’s operations worldwide and the Alcan facilities in British Columbia,

including a description of the Kitimat Smelter and the Kemano System;

• The physical characteristics and operation of Alcan’s Kemano System;

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• The Modernization Project and the relationship of the 2007 EPA to the

Modernization Project;

• The availability of Kemano Power for the 2007 EPA; and

• The history of the Kemano System and Alcan power sales.

1.6 Contact Information Please direct all correspondence to:

Mathieu Bergeron Alcan Inc. #850 – 999 West Hastings Street P.O. Box 16 Vancouver, B.C. V6C 2W2

E-mail: Mathieu.Bergeron@Alcan.com Phone: (604) 257-1418

Fax: (604) 257- 1421

And to:

David Bursey Bull, Housser and Tupper 3000 - 1055 West Georgia Street Vancouver, B.C. V6E 3R3

E-mail: dwb@bht.com Phone: (604) 641-4969

Fax: (604) 646-2563

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2. ALCAN COMPANY PROFILE Alcan Inc. (“Alcan”) is the parent company of an international group involved in many

aspects of the aluminum, engineered products and packaging industries. Through

subsidiaries, joint ventures and related companies, Alcan operates in 61 countries

around the world. The activities of Alcan include bauxite mining, alumina refining,

production of specialty alumina, aluminum smelting, manufacturing and recycling,

engineered products, flexible and specialty packaging, as well as related research and

development. Alcan has approximately 68,000 employees and its 2006 revenues were

approximately $23.6 billion.

Alcan is a public company with its shares traded on the Toronto, New York, London,

Paris and Swiss stock exchanges. Alcan’s head office is in Montreal, Canada.

3. ALCAN’S OPERATIONS 3.1 Worldwide Alcan operates through four Business Groups, each responsible for the different

business units that they comprise:

• Bauxite and Alumina: Headquartered in Montreal, Canada, this Business

Group comprises Alcan’s worldwide activities related to bauxite mining and

refining into smelter-grade and specialty aluminas, owning, operating or having

interests in six bauxite mines and deposits in five countries, five smelter-grade

alumina plants in four countries and six specialty alumina plants in three

countries and providing engineering and technology services.

• Primary Metal: Headquartered in Montreal, Canada this Business Group

comprises smelting operations, power generation, production of primary value-

added ingot, manufacturing of smelter anodes, cathodes, and aluminum fluoride,

smelter technology and equipment sales, engineering services and trading

operations for aluminum, operating or having interests in 22 smelters in 11

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countries, power facilities in four countries and 11 technology and equipment

sales centres and engineering operations in nine countries.

• Engineered Products: Headquartered in Paris, France this Business Group

produces engineered and fabricated aluminum products including rolled,

extruded and cast aluminum products, engineered shaped products and

structures, including cable, wire, rod, as well as composite materials such as

aluminum-plastic, fibre reinforced plastic and foam-plastic in 52 plants located in

11 countries. Also part of this Business Group are 33 service centres in 11

countries and 33 sales offices in 29 countries.

• Packaging: Headquartered in Paris, France, this Business Group consists of

Alcan’s worldwide food, pharmaceutical and medical, beauty and personal care,

and tobacco packaging businesses operating 150 plants in 30 countries. This

Business Group produces packaging from a number of different materials,

including plastics, aluminum, paper, paperboard, glass and steel.

Favourable aluminium prices in recent years have contributed to growth in Alcan’s

operations. The Kitimat Smelter Modernization Project is one of several major

smelter projects that Alcan is pursuing worldwide:

• Kitimat, B.C., Canada: 400,000 tonne smelter modernization project.

• Saguenay, Quebec, Canada: power plant upgrade and 450,000 tonne

smelter modernization project.

• Isal, Iceland: 460,000 tonne smelter modernization project.

• Coega, South Africa: 720,000 tonne aluminum smelter project.

• Sohar, Oman: 350,000 tonne aluminum smelter joint venture project.

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• Ma'aden, Saudi Arabia: integrated power plant, bauxite mine, alumina

refinery, and 720,000 tonne aluminum smelter project.

3.2 British Columbia Alcan owns and operates an aluminum smelter, power generation system and related

infrastructure facilities in Kitimat British Columbia. Alcan’s facilities are distributed

throughout a large area of northwest British Columbia, extending from Kitimat to

Kemano on the coast and then to the Kenney Dam on the Nechako River southwest of

Vanderhoof. A brief description of Alcan’s major facilities in British Columbia follows.

Most of these facilities were constructed in the 1950’s.

Figure 1 - Map showing location of Alcan facilities in B.C.

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(a) Kitimat Smelter

Figure 2 - Aerial view of the Kitimat Smelter The Kitimat Smelter is located on a deep water port on Douglas Channel at Kitimat.

Alcan owns and operates wharf facilities at this port, from which raw material and

finished products are transported to and from the Kitimat Smelter. The smelting

facilities include seven potlines, housed in fifteen buildings at the smelter site. The

Kitimat Smelter site also includes: an anode plant, casting facilities, transportation

facilities, waste handling facilities, equipment and vehicle depots, workshops, office

buildings, employee facilities, and other related support facilities. The annual rated

production capacity of the smelter is approximately 275,000 tonnes of aluminum.

Currently, the Kitimat Smelter is operating at approximately 240,000 tonnes per year –

close to 90% of its annual rated production capacity.

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Alcan supplies power to its Kitimat Smelter from an extensive hydro-electric generation

system that Alcan owns and operates at Kemano. (“Kemano System”). Kitimat is

about 75 km northwest from Kemano.

(b) Kemano System

Figure 3 - Kemano System

The Kemano System refers to Alcan’s power generation and transmission system. It

has the following basic components:

(i) Nechako Reservoir

The Nechako Reservoir (“Reservoir”) is located on the interior plateau east of the

Coastal Mountains and southeast of Kitimat. The Reservoir was created from a

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chain of lakes and rivers in the Eutsuk/Tahtsa drainage basin whose natural flow

was impounded by the Kenney Dam. The Reservoir is 233 km (148 mi) long,

stretching to approximately 87 km (54 mi.) southwest of the town of Vanderhoof.

The water surface of the Reservoir when full is 910 km2 (351 mi2). The Reservoir

catchment area (the portion of the watershed that directs water into the

Reservoir) is 13,955 km2 (5,388 mi2). The Reservoir has two water outlets: the

Skins Lake Spillway near the north-centre area; and the Tahtsa Intake at the

western end.

(ii) Kenney Dam

Figure 4 - Kenney Dam

The Kenney Dam is a rock-filled and clay-core dam at the eastern end of the

Nechako Reservoir. It was constructed in the early 1950’s. It is approximately

474 m (1500 ft) in length and 93 m (305 ft) in height, located at the entrance of

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the Grand Canyon of the Nechako River. The Kenney Dam, together with nine

saddle dams, created the Nechako Reservoir.

(iii) Skins Lake Spillway

Figure 5 - Skins Lake Spillway

The Skins Lake Spillway is a gated concrete water release structure located

about 80 km (50 mi) west of the Kenney Dam on Ootsa Lake. The spillway has

two radial gates. The radial gates are each 10.67 meters square, and each gate

is operated by its own twin wire-rope hoist powered by an electric motor. A

concrete chute 25 meters wide and 25 meters long with side walls conveys water

from the gate structure to the plunge pool.

Water is released from the Nechako Reservoir through the Skins Lake Spillway

to Skins Lake. Downstream of Skins Lake is the Cheslatta River system which in

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turn flows into the Nechako River at Cheslatta Falls. The Skins Lake Spillway is

used to release Nechako Fisheries Conservation Program (NFCP) regulated

flows as well as flood routing flows into the Nechako River.

(iv) Tahtsa Intake

Figure 6 - Tahtsa Intake

The Tahtsa Intake is a gated concrete structure located at the western end of the

Reservoir at the west end of Tahtsa Lake. The intake structure houses trash

racks, guides for bulkheads and a 4.26 m x 7.9 m fixed wheel gate which may be

used to completely shut off the flow of water to the Kemano Powerhouse. This

structure is the inlet to the Power Tunnel, which leads to the Kemano

Powerhouse. The flow of water from the Reservoir is controlled at the Kemano

Powerhouse.

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(v) Power Tunnel

The Power Tunnel is an arched tunnel, 7.6 m (25 ft) wide and approximately 16

km (10 mi) long, from Tahtsa Lake through Mt. DuBose to the Kemano

Powerhouse. Two sloping, steel-lined penstocks (inlet pipes into the

powerhouse) lead from the western end of the tunnel to the Kemano

powerhouse.

The slope of the tunnel is relatively low dropping only 40.8 meters until it reaches

the entrance to the penstocks inside Mt. Dubose above the powerhouse.

At the point where the power tunnel joins the penstocks, a surge shaft rises at a

46o angle to the surface. The shaft opens to the surface at an elevation of

868.68 meters. The surge shaft provides the plant with a hydraulic cushion to

absorb rapid load changes. Since the generator nozzle needles can open or

close faster than the water in the tunnel can accelerate or decelerate, the surge

shaft absorbs the initial hydraulic change until the water in the tunnel can

compensate.

The power tunnel branches into two 3.35 meter diameter penstocks. The

penstocks descend at an angle of 48o to the powerhouse. They are lined with

steel 51 mm thick. Each penstock branch contains an oil-pressure activated and

remotely controlled butterfly valve located about 91 meters below the “Y”

branching.

Near the powerhouse, each penstock branches into four sections, each of which

supplies water to a single generator. A spherical valve in the penstock of each

unit is used to control the water supply to a single generator.

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(vi) Kemano Powerhouse

Figure 7 - Kemano Powerhouse

The Kemano Powerhouse is located inside Mt. Dubose at Kemano. The

generating equipment is housed in a chamber excavated from solid rock and

located approximately 426 m in from the face of the mountain. The chamber's

approximate dimensions are 230 m long, 25 m wide and 41 m high.

The elevation difference from the Reservoir surface to the Kemano Powerhouse

is approximately 792 m (2,600 ft). The outflow from the Kemano Powerhouse

(the “tailrace”) discharges into the Kemano River which flows into Kemano Bay

on the Gardner Canal. The Kemano Powerhouse does not have a bypass for

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water releases. All water released from the Reservoir through the Tahtsa Intake

passes through the Kemano Powerhouse and generates electricity.

The Kemano Powerhouse contains eight 125 MW turbine generator units with a

total installed capacity of 1,000 MW. The eight generating units at Kemano

Powerhouse were installed as follows:

a. Units 1, 2 and 3 were commissioned in July 1954, bringing the installed

capacity to approximately 336 MW (450,400 hp);

b. Unit 4 was commissioned in February 1956, bringing the installed capacity to

approximately 448 MW (600,536 hp);

c. Unit 6 was commissioned in October 1956, bringing the installed capacity to

approximately 560 MW (750,670 hp);

d. Unit 5 was commissioned in July 1957, bringing the installed capacity to

approximately 672 MW (900,804 hp);

e. Unit 7 was commissioned in March 1958, bringing the installed capacity to

approximately 784 MW (1,051,938 hp);

f. Unit 8 was commissioned in 1967, bringing the installed “name-plate”

capacity to approximately 896 MW (1,201,072 hp); and

g. During the 1980’s and 1990’s, Alcan modified the eight generating units to

enhance their generating efficiency (see the description that follows for more

detail) which increased the combined installed capacity to approximately 1000

MW (1,340,483 hp).

The generators were manufactured by three different companies: General

Electric, Westinghouse and English Electric. During the 1980's and 1990's,

Alcan replaced the original mica/asphalt type stator windings with upgraded

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thermosetting mica/resin windings with a rating of 132 MVA each, which

increased the generating capacity of each unit to 125 MW.

The generator turbines are a 4-nozzle vertical impulse type manufactured by Allis

Chalmers, Pelton and Dominion Engineering. Alcan has replaced the original

turbine runners and needle housings with single, higher efficiency designed units

from VATech in all units except for generator unit number 6. In generator unit

number 6, Alcan has replaced the turbine runner with the new runner, but has not

yet upgraded the needle housing. Alcan expects to replace that needle housing

within the next year.

The power from the generators is stepped up from 13.8 kV to 300 kV by the

generator transformers. A total of 12 transformers are arranged in four banks of

3 single-phase transformers each. Each transformer bank normally takes the

output of 2 generators but the powerhouse bus system allows switching to permit

3 generators to be connected to a single transformer bank for maintenance

purposes. One spare single-phase transformer is located in its own vault in the

powerhouse.

The generator step-up transformers are high efficiency ABB transformers with a

capacity of 132 MVA to match the full capacity throughput of three generators.

The 300 kV transformer output is conducted to the external switchyard via cross-

linked polyethylene (XLPE) insulated cables manufactured by ABB. The cables

run through a 610 m underground cable tunnel to the switchyard, which is

located outside the mountain.

The generating station is controlled from the Kitimat Control Centre using an ABB

Distributed Control System (DCS). The station can also be controlled locally

from the Kemano Control Centre. Maintenance and Operation crews rotate into

the station from Kitimat on a weekly schedule.

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(vii) Kemano Switchyard

The Kemano Switchyard is laid out in two sections. The first section is on the

south side of the tailrace and consists of two parallel high-voltage (HV) bus bars.

The output from each transformer bank is controlled with an SF6 circuit breaker.

A pair of disconnects permits the HV breaker associated with each transformer

bank to be connected to either HV bus. The two HV busses can be connected

together with a pair of HV disconnects and a Tie circuit breaker. A pair of HV

disconnects associated with the two transmission lines permits their connection

to either of the two HV busses.

A set of high-voltage disconnect switches and overhead cables link the parallel

busses to the second switchyard, located on the north side of the tailrace. The

second yard is the transmission line terminal at the Kemano end. It consists of

line-breakers on each of the two transmission lines along with associated

disconnects allowing the transmission lines to be de-energized or tied together,

as required. All the HV circuit breakers are of the SF6 type and are

manufactured by Alstom. All disconnects are manufactured by Southern States.

The terminal yard also houses the wave traps for a high-speed digital Power Line

Carrier (PLC) that communicates control, relay and alarm data for the DCS

control system using a signal superimposed on the transmission line conductors

(viii) Kemano-to-Kitimat Transmission System

The Kemano-to-Kitimat Transmission System consists of 82 km (51 mi) of double

300-kV circuits, from Kemano to the Kitimat Smelter.

For the first 16 km of the transmission system from the Kemano Powerhouse,

both transmission lines are carried on double circuit towers, gradually climbing

about 300 m in altitude. From this point, the two lines are carried on individual

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single circuit towers which traverse a mountain pass (Power Line Pass) with a

maximum altitude of approximately 1,625 m for a distance of 16.25 km. One of

the single circuits is carried on steel towers while the other is on a braced H

frame type tower constructed with thin walled aluminum tubes and a box girder

cross-arm. This section of the transmission line was originally built to transmit

the planned ultimate capacity of the Kemano powerhouse of 1,600 MW.

The lines then descend to the Kildala valley where they resume on double circuit

steel towers down the valley, around Kildala Arm and over Green Mountain to the

terminal station at Kitimat.

(ix) Kitimat Switchyard

The Kitimat Switchyard is located adjacent to the Kitimat Smelter site. The

Kitimat Busbar referred to in power sales contracts is located at the Kitimat

Switchyard. The Kitimat Busbar is the point of interconnection between the

transmission systems of Alcan and British Columbia Hydro and Power Authority

(“BC Hydro”).

(c) Scale of Alcan’s Operations in British Columbia Currently, Alcan has approximately 1,500 active full-time employees in its British

Columbia operations. Alcan also hires additional workers on a part-time or contract

basis, from time to time, as needed. Alcan's direct contribution to the BC economy in

2006 totalled approximately $275 million, including money spent by Alcan on: goods

and services purchased from BC Suppliers; employee payroll and benefits; pension

payments; and property taxes.

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4. ALCAN’S KEMANO SYSTEM 4.1 Nature and Quality of the Kemano System

The Kemano System is a large hydro-electric system with unique features that

distinguish it as an efficient and reliable source of generation, capacity, and storage for

BC Hydro:

• The large elevation difference from the Reservoir surface to the Kemano

Powerhouse, approximately 792 m (2,600 ft), makes the Kemano System an

efficient generator of electricity from the water used.

• The Kemano System has been designed, built and maintained to high standards

because Alcan requires a high degree of reliability to serve the Kitimat Smelter’s

requirements.1

• The Kemano System has a large measure of redundancy designed into the

system to assure a reliable base of generation for the smelter.

• Alcan has over 50 years of operating history with the Kemano System so the

characteristics and generating capacity of the system are well understood.

• Alcan and BC Hydro have a long history of cooperation on the operation of the

Kemano System to provide energy and support to BC Hydro’s system. As a

result, BC Hydro customers receive better and more reliable service than they

would otherwise.

• The Alcan and BC Hydro system are already interconnected and capable of

delivering the 2007 EPA services.

1 In addition, Alcan’s management practices for its operations in British Columbia comply with internationally-recognized management standards, including: ISO 9001:2000 for its Quality Management System; ISO 14001:2004 for its Environmental Management System; and OHSAS 18001:1999 for its Occupational Health and Safety Management System.

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4.2 Kemano System Basic Parameters The basic parameters of Alcan’s Reservoir, Kemano Powerhouse, and Kemano-to-

Kitimat transmission system (“Kemano System”) are set out in the following table.

KEMANO SYSTEM BASIC PARAMETERS

Kemano Powerhouse generation capacity (following recent upgrades)

1000 MW

Kemano Powerhouse nameplate generation capacity (original equipment capacity)

896 MW

Maximum dependable generation capacity 860 MW

Expected long-term average generation 793 MW

Expected long-term generation (92% reliability2) 730 MW

Expected long-term generation (100% reliability) 700 MW

Reservoir – licensed live storage 7,100 cubic hectometres

Reservoir – useable live storage (due to Tahtsa Narrows restriction)

3,400 cubic hectometres

Reservoir – Water License maximum rate for the diversion and use of water for power generation

170 m3/s

Transmission line losses from Kemano to Kitimat Smelter

up to 20 MW

Annual historical long term average inflows (1955- 2006)

194.0 m3/s

Annual Skins Lake releases required for fisheries

• Nechako Fisheries Conservation Program: 36.8 m3/s

• Cooling Water Average Requirements: 15.7 m3/s

52.5 m3/s

Kemano discharge required to generate 860 MW

136.0 m3/s

Kemano discharge required to generate 730 MW

112.4 m3/s

2 Reliability data is expressed in terms of the Kemano System as a stand-alone project, rather than in coordination with BC Hydro’s system.

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Further explanation of the parameters follows:

(a) Kemano Powerhouse current generation capacity

The combined generation capacity of the eight generating units in the

Kemano Powerhouse is 1000 MW. This capacity was achieved by the

efficiency upgrades to the generating units in the 1980’s and 1990’s.

(b) Kemano Powerhouse nameplate generation capacity

The combined original design (referred to as "nameplate") capacity of the

eight generating units in the Kemano Powerhouse is 896 MW.

(c) Maximum dependable generation capacity

The Power Tunnel has a hydraulic restriction that limits the amount of water

that can safely be passed through to the Kemano Powerhouse. Because of

this restriction, the peak generation capacity of the Kemano Powerhouse is

approximately 880 MW to 900 MW, which can only be sustained for short

periods of time. The maximum that the Kemano Powerhouse can

dependably generate on a sustained basis is 860 MW, so long as sufficient

water is available.

(d) Expected long-term average generation

Based on the historic inflows and expected performance of the

Kemano System, Alcan estimates the long-term generation from the Kemano

System to be approximately 793 MW on average. The generation simulation

model is described further in sections 4.4 and 4.5.

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(e) Expected long-term generation (92% reliability)

Based on the historic inflows and expected performance of the Kemano

System, Alcan estimates that the Kemano System can reliably produce 730

MW of power on a long-term basis 92% of the time. Given that the

transmission losses would decrease to approximately 15 MW at low

generation, Alcan estimates that the Kemano System can deliver the

electricity requirements of the Kitimat Smelter and the Tier 1 Electricity

Quantities under the 2007 EPA with a reliability of at least 95%, or even

higher considering the synergy with the BC Hydro system provided by the

equichange and coordination services.

(f) Expected long-term generation (100% reliability)

Based on the historic inflows and expected performance of the Kemano

System, Alcan estimates that the Kemano System can reliably produce 700

MW on a long-term basis 100% of the time. This is the estimated level of

reliable generation upon which the Modernization Project is designed, which

is more stringent than required to support the 2007 EPA Tier 1 Electricity

Quantities.

(g) Reservoir – licensed live storage

Alcan’s Final Water Licence No. 102324 states that “[t]he maximum quantity

of water which may be stored is 23,850 cubic-hectometres, of which 7,100

cubic-hectometres is live storage”. Attached as Appendix A is a copy of

Alcan’s Final Water Licence.

“Live storage” is that portion of total maximum licensed storage that Alcan

may actually use for power production. The maximum operating level is

largely determined by the characteristics of various facilities in the Reservoir

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such as the height of the Skins Lake Spillway and the nine saddle dams. The

Reservoir’s licensed maximum operating level is El. 853.44 m above sea level

(2,800 ft) and the minimum operating level is approximately El. 844.30 m

above sea level (2,770 ft), providing a licensed operating drawdown range of

9.14 m (30.0 ft).

(h) Reservoir – useable live storage (due to Tahtsa Narrows restriction)

Alcan can only access 3,400 cubic-hectometres, approximately 48% of the

licensed 7,100 cubic-hectometres of live storage, for power generation

because of the hydraulic restriction created by Tahtsa Narrows, located at the

entrance to Tahtsa Lake at the western end of the Reservoir. Tahsta

Narrows is a natural restriction in the Reservoir bathymetry. Once the

Reservoir level drops below approximately El. 849.5 m (2,787 ft) above sea

level, Tahtsa Narrows restricts the water that can pass from the eastern

portion of the Reservoir to Tahtsa Lake to the west and then to the Tahtsa

Intake. Tahtsa Narrows limits the usable drawdown in the Reservoir to the

top 3.96 m (13.0 ft). Alcan normally operates the Reservoir with a range of

3.04 m (10 ft).

(i) Reservoir – Water License maximum rate for the diversion and use of water for power generation

Alcan’s Final Water Licence No. 102324 authorizes the diversion and use for

power generation of up to 170 m3/s.

(j) Transmission line losses from Kemano to Kitimat Smelter

The transmission line loss from Kemano to the Kitimat Smelter is up to 20

MW, depending on the transmission load.

24

4.3 Reservoir Hydrology The “water year” is measured from November 1st to October 31st. Inflow to the

Reservoir comes mainly from melting of the winter snowpack, referred to as the “spring

freshet”. Rainfall also contributes a significant amount of inflow to the Reservoir, mostly

during the fall, although the fall contribution is usually less than the spring freshet.

Typically, the largest monthly inflows occur in June and July and the smallest inflows

occur in January and February. Typically, the Reservoir level reaches its lowest level

for the year by the end of April and its highest level for the year by the end of July or

August.

4.4 Alcan Water Management System and Operating Regime Alcan’s water management system for the operation of the Reservoir is based on three

steps: data acquisition, data processing, and decision-making for water releases for

generation or other purposes.

Alcan collects hydrological and meteorological observations at least every three hours,

including observations on: temperature, precipitation, snow water equivalent, reservoir

water level and water releases. Alcan augments those observations with manual snow

surveys undertaken periodically throughout the winter. Alcan also collects weather

forecasts for the watershed from Environment Canada twice a day.

This information, combined with past meteorological data, is processed through a

hydrological model to estimate the probable future inflows based on current watershed

conditions. These inflow sequences are then transferred to a simulation model that

takes into account all of the relevant characteristics and constraints of the Reservoir in

25

its calculations. The simulation model is used to estimate the outcome of a range of

hypothetical generation and spillway release scenarios. Alcan then undertakes a

sensitivity analysis to assess the implications of the power generation and spillway

release scenarios to determine the optimum operating scenario.

Alcan’s plans and manages the operation of the Reservoir based on the results of this

analysis. The goal is to make best use of the available water. Alcan incorporates the

most current information into the analysis on an ongoing basis to update the results as

necessary, and then adjusts the Kemano System operation accordingly. Alcan co-

ordinates the generation of power taking into account the terms of its water licence,

directives from the British Columbia Comptroller of Water Rights (“Water Comptroller”),

Kitimat Smelter requirements, and Alcan’s other commitments.

Under normal conditions, the generation will be set at approximately 790 MW. The

actual generation from day-to-day will be adjusted as the operating model results are

updated for reservoir conditions and inflows. If the risk of spilling becomes significant,

the generation will be increased. If the reservoir elevation drop and inflows are low, the

generation will be reduced until the reservoir conditions improve.

4.5 Analysis of the Kemano System Generating Capacity Alcan assesses the generating capacity of the Kemano System using its Reservoir

Operating Model (ROM). The ROM is a simulation model that calculates the generation

that would be available if the future reservoir inflows were equivalent to the inflow

sequences observed in the past. The ROM differs from the operational model because

it is used to study the capacity of the Kemano System rather than to operate it. Alcan

uses the historical daily inflows to the Reservoir from 1955 to 2006 as the data set to

study the capacity of the Kemano System.

26

Alcan believes the 50-year period it uses in the model is sufficiently representative to

project the future probabilities for generation. Attached as Appendix B is a graph

showing the inflows information from 1931 to 2006, with the supporting data.

The inflow data for the period 1931 to 1950 is synthesized based on measurements

taken in other watersheds near the Nechako watershed. The information was

developed for Alcan by the B.C. International Engineering Company in 1951 for Alcan's

planning of the original Kemano project.

Conditions related to the Reservoir and Kemano Powerhouse operation have changed

over time as certain legal requirements have been established, interconnection capacity

has increased, and equipment improvements have increased generation efficiency.

Alcan undertook an extensive upgrades to its generator units and other parts of the

Kemano System starting in the 1980’s.3 During the upgrade program, Alcan removed

generating units from service at opportune times to accomplish the upgrade work. For

example, during the period of 1994 to 1997, Potline 7 was shut down which created an

opportunity to schedule Kemano System upgrade work. These sort of events affect the

generation statistics during the historical time period and must be considered in

estimated the future generating capability of the Kemano System. Attached as

Appendix C is a graph showing the power deliveries to Kitimat Smelter and to BC Hydro

which indicates some of the notable events that have altered the power requirements at

the Kitimat Smelter and affected its power requirements.

Rather than using historical generation data, therefore, Alcan simulates future

generation based on the current Reservoir and Kemano Powerhouse operating

conditions, including the current physical characteristics and capabilities, operating

constraints, and anticipated smelter loads.

3 See the description in section 3.2 (b) (vi).

27

4.6 Safety of People and Facilities Alcan must operate the Reservoir in a manner that ensures public safety and is within

the safe operational margins of its facilities. Historically, the largest Nechako Reservoir

inflow volume has resulted mostly from snowmelt in the spring and early summer.

Winter inflows are less than required for generation and have to be supplemented with

stored water, resulting in the reservoir being drawn down. Additional releases are

scheduled when the volume of inflow forecast is greater than the combined volume of

storage available in the Reservoir and the amount scheduled to be released for fisheries

and generation purposes. If Alcan anticipates excess inflows, it will increase the

available storage by releasing water in advance of the freshet to create space in the

Reservoir. This reduces the amount of water that would otherwise be released in late

May and June, during peak flows in the Fraser River.

Alcan meets with the Water Comptroller at least twice a year to review the operational

status of the Reservoir. The Water Comptroller has jurisdiction over dam safety and

water management generally and may issue directives to Alcan regarding the

management of the Reservoir. The Reservoir is also the principal means of flood

control for the Nechako River and the Fraser River.

4.7 Protection of Fish and Fish Habitat Pursuant to the 1987 Settlement Agreement among the Province of British Columbia,

Canada and Alcan and the 1997 Settlement Agreement between the Province of British

Columbia and Alcan, Alcan committed to maintain certain water releases from the

Reservoir to the Nechako River for fisheries purposes. The water releases are made

under the direction of the Nechako Fisheries Conservation Program (“NFCP”), which

was established under the 1987 Settlement Agreement and comprises representatives

from Alcan, Canada, and the Province.

The quantity of water released for fisheries purposes is equivalent to a mean annual

flow of 36.8 m³/s (1,300 cfs) measured at Skins Lake Spillway, plus additional flows in

28

July and August for cooling purposes. This water allocation is managed by the NFCP

Technical Committee, with Alcan making releases as directed by the Committee. The

releases range, on a mean monthly basis, from about 31 m³/s (1,100 cfs) in the winter

to about 49 m³/s (1,730 cfs) in the summer, excluding cooling water releases.

From mid-July until mid-August, additional cooling water is released from the spillway to

manage water temperatures downstream for migrating sockeye salmon. Releases are

made depending upon meteorological conditions so that the total flow into the Nechako

River below Cheslatta Falls ranges between about 170 m³/s (6,000 cfs) and 283 m³/s

(10,000 cfs). The maximum release of 283 m³/s (10,000 cfs) into the Nechako River

has been set by the Provincial Water Management Branch, in consultation with Alcan

and DFO, to minimize flooding downstream on the Nechako River.

Excess water from flood inflows are released as necessary. Such releases are

scheduled in consultation with the Water Comptroller and the NFCP Technical

Committee.

Pursuant to a protocol worked out with the Haisla First Nation, Alcan also regulates the

release of water from the Kemano Powerhouse into the Kemano River during the spring

to provide a stable water flow for eulachon spawning and to protect against dewatering

of incubating eulachon eggs. Alcan calculates the appropriate water flows annually and

reviews the annual release regime with the Water Comptroller.

4.8 Water Rental Rates Pursuant to the terms of the 1950 Agreement, the water rental rate that Alcan pays

varies according to the use made of the power generated from the water. For the

energy Alcan uses in processes that contribute to the production of aluminum or sells as

secondary power (i.e. energy for the production of steam or otherwise in direct

competition with fuel), Alcan pays a water rental rate that is tied to the price of

aluminum. For all other energy generated, Alcan pays the water rental rate that other

29

similarly-situated hydroelectric generators would pay, including BC Hydro. The water

rate Alcan that pays for power sold to third parties is the standard General Power

Generation rate that is applicable to hydropower production.

4.9 Kemano Powerhouse Generating Efficiency The 792 m (2,600 ft.) elevation drop from the Reservoir to the Kemano Powerhouse

creates an exceptionally high hydraulic head. The water diverted from the Reservoir

enters each turbine at the Kemano Powerhouse at approximately 1,100 psi. As a

result, the Kemano System generates a high ratio of electricity from the water it uses –

approximately 6.3 to 6.5 MW per cubic meter per second of water on average,

depending on reservoir elevation and other conditions.

The maximum flow through the power tunnel is dependent on the reservoir elevation at

the tunnel intake. Higher flows are possible at higher reservoir elevations. The

maximum flow through the power tunnel is approximately 142 m3/sec. At higher flows,

air may be entrained in the water column by drawing it down the surge shaft.

With the hydraulic limit of the tunnel, the generating station cannot run at its theoretical

maximum output of approximately 1,000 MW and is instead limited to a peak capacity in

the range of 880 to 900 MW and maximum dependable capacity of approximately 860

MW. (see the description in section 4.2 (c) for more details.)

4.10 Kemano System Operating Record The operating data since 1994 provides the best representation of the future

performance of Kemano because Alcan invested a considerable amount on a complete

rewind of all eight generators in the 1980’s and early 1990’s and has since invested

approximately C$45 million on further enhancements to Kemano generation. Generator

availability, including maintenance outages averages 94% to 95% annually.

Maintenance outages decreased after 1997 because Alcan had completed significant

30

upgrade work by that time. Alcan expects the maintenance outages to remain at the

post-1997 level in the future.

Attached in Appendix D is a table that lists the total planned outage hours, maintenance

outage hours, forced outage hours, the number of forced outages, and generation shed

hours for each month during the period January 1994 to April 2007. “Planned outages”

are preventative maintenance and inspections. “Maintenance outages” are corrective

actions that must be taken on relatively short notice and are unplanned. “Generation

shed” are a generator trips requested by BCTC.

The total possible number of machine hours each year is 70,080 (8 generators

multiplied by 8,760 hours). In most years between 1994 to 2005, forced outages

represent less than 1% of total possible machine hours. The noticeable anomaly is

1996 and 1997. Between April 1996 and February 1997, one of the eight generating

units failed and required significant work.

5. THE MODERNIZATION PROJECT 5.1 Overview of the Modernization Project On 14 August 2006, Alcan announced Alcan's plan to modernize and expand its Kitimat

Smelter (“Modernization Project”). The implementation of the modernization project

was subject to several conditions, including:

• the receipt of any required environmental permits,

• a successful conclusion of the power sale agreement with BC Hydro, and

• an agreement with the Canadian AutoWorkers (CAW), Local 2301 to extend the

term of the collective labour agreement to 2012.

31

Once these conditions are met, the application for final approval will be submitted to

Alcan’s Board of Directors. In May 2007, Alcan reached an agreement with the CAW

and is currently working to satisfy the other two conditions.

The Kitimat Smelter currently uses Vertical Stud Söderberg (“Söderberg”) technology

which is less efficient and more labour-intensive than the modern generation of

technology that is typically used in new or updated smelters. Söderberg technology is

the original technology installed at the Kitimat Smelter when the potlines were

constructed in the 1950’s and 1960’s. Söderberg technology has been surpassed by

other technologies, notably AP technology which has been the preferred choice for new

smelter installations in recent years because of its superior smelting efficiency,

operating efficiency, and environmental performance.

Alcan is proposing to modernize the Kitimat Smelter by replacing the existing Söderberg

technology with proprietary state-of-the-art AP3X “pre-bake” anode technology. The AP

technology is known to be the most advanced, efficient and environmentally sound

technology available. AP technology was developed by Pechiney SA. Alcan acquired

Pechiney SA in December 2003 and now owns the AP technology.

AP technology has progressed through several generations of smelting pot designs,

each generation using a higher level of amperage than the last to improve the smelting

efficiency. The generation of AP technology is identified by a number that denotes the

amperage used – for example, AP18 denotes 180,000 amps, AP30 denotes 300,000

amps, and AP 35 denotes 350,000 amps. Alcan plans to modernize the Kitimat Smelter

by replacing the existing Söderberg technology potlines with AP3X series technology.

AP 3X denotes that the amperage may be greater than 350,000 amps. Related

facilities at the Kitimat Smelter would also be upgraded or constructed to support the

smelting technology modifications.

32

AP technology pots differ substantially from the Söderberg technology pots currently

employed at the Kitimat Smelter. AP technology pots are much larger and operate at

higher amperages. They also use an anode that is “pre-baked”.

Converting to AP technology will extend beyond the design of the pots. It will extend to

the building configuration, the cranes that service the pots, the design of the anode

baking and anode assembly areas, and specialized vehicles that operate in the

potrooms. The technology is an integrated package covering all aspects of the smelter.

Alcan estimates its overall investment in the Modernization Project would be

approximately US $1.8 billion. After completion of the Modernization Project, the

Kitimat Smelter would be a large smelter by world standards, and among the largest of

the smelters that Alcan owns. Alcan expects the Modernization Project would extend

the life of the Kitimat Smelter by more than 35 years.

5.2 Improved Operating Efficiencies and Performance Installing modern smelter technology at the Kitimat Smelter would improve operating

efficiency and increase its environmental and economic performance. AP technology is

more efficient than Söderberg technology in several important respects:

(a) Power Consumption AP technology uses approximately 30% less power to produce an equal amount of

aluminum than Söderberg technology.

(b) Environmental Performance AP technology consumes fewer resources and creates less environmental impact than

Söderberg technology in the smelting process. In a prebake pot, alumina additions and

anode effect treatments will take place within the totally enclosed pot. Removable

doors will provide access for anode replacement. Emissions generated by the process

will be contained within the enclosed pot and drawn off by an emission collection

33

system. Emissions treatment will be carried out in dry scrubbers. Certain components

of the emissions captured by the scrubbing process will be returned to the production

process for re-use.

The total waste discharge from the modernized Kitimat Smelter would decrease by

approximately 44%, even though aluminum production capacity would increase by

approximately 40%. Importantly, polycyclic aromatic hydrocarbon (PAH) releases to the

environment would decrease by approximately 97%, greenhouse gases would decrease

by approximately 55% and fluorides would decrease by approximately 75%. Further,

the work environment at the modernized Kitimat Smelter would be cleaner, quieter and

safer.

(c) Operational Infrastructure Since the AP pots are larger and more efficient, they will produce metal at

approximately three times the rate of a Söderberg pot. The modernized potline would

include up to 372 pots housed in six buildings with a total rated capacity of about

400,000 tonnes per year. By comparison, the existing Kitimat Smelter has a total of 900

smaller pots in 15 buildings with a total rated capacity of about 275,000 tonnes per year.

The modernized pots cost less to operate and maintain. They also require less support

equipment. For example, potroom cranes would be reduced from 29 to 10 and potroom

vehicles that support the Söderberg process would be replaced by equipment that is

integrated into the pot structure. Overall, the entire infrastructure (pots, buildings,

support equipment, lighting, heating) would be reduced.

(d) Labour Requirements With fewer pots, less infrastructure, and greater automation, less labour would be

required. Alcan expects the Modernization Project would have the following

implications:

34

• The Modernization Project would secure approximately 1,000 stable, technically-

enriched jobs in Alcan’s British Columbia operations in the long-term that might

otherwise have been lost at the end of the current Söderberg-based Kitimat

Smelter life cycle.

• During construction, Alcan expects the additional jobs associated with the

Modernization Project work would exceed 1,000 over the full construction period.

• Because of the high level of automation associated with AP technology, the work

force would require a correspondingly high level training and expertise. Alcan

plans to retrain its work force to acquire the necessary skills. Alcan plans to

achieve the transition from current work force level to the post-Modernization

Project level through normal attrition, including retirements and annual staff

turnover.

6. 2007 EPA RELATIONSHIP TO THE MODERNIZATION PROJECT

The Kemano System produces more power than the Kitimat Smelter requires. Alcan

has sold power to others, mostly BC Hydro and Powerex, for many years.

The revenue from these power sales contributes to the economic performance of

Alcan’s Kitimat operations. The 2007 EPA will therefore be important for Alcan even if

the Modernization Project does not proceed.

Securing a satisfactory long-term power sales agreement has particular significance in

the context of the Modernization Project because of the large investment required to

replace the existing Söderberg technology with the AP technology. When evaluating

the Modernization Project as an investment opportunity relative to other opportunities, it

is important for Alcan to have confidence in the revenue stream associated with the

power sales. Without the certainty of the 2007 EPA revenue stream, other Alcan

projects rank higher as investment opportunities. For these reasons, the 2007 EPA is a

necessary condition to support a decision to proceed with the Modernization Project.

35

The Modernization Project is not, however, a necessary condition for the 2007 EPA to

proceed. The 2007 EPA is an independent and mutually-beneficial power sales

arrangement between Alcan and BC Hydro. If Alcan does not undertake the

Modernization Project, the 2007 EPA would remain in place until the end of its term in

2034.

7. AVAILABILITY OF KEMANO POWER FOR THE 2007 EPA

7.1 Power Requirements for the Current Kitimat Smelter (a) Aluminum smelting process Aluminum is an abundant metallic element. In its natural state, aluminum is always

found in combination with other elements, never in its free state. It is commonly found

in the form of oxides. The process of making metallic aluminum is carried out in two

successive stages: a chemical process to extract anhydrous aluminum oxide from the

bauxite, and an electrolytic process to reduce the alumina to aluminum.

Aluminum is produced by the electrolytic reduction of alumina through a process known

as the Hall-Heroult process. In this process, an electric current breaks down the

alumina, causing the aluminum and oxygen atoms to separate. This reaction takes

place in large cells or “pots”, through which an electrical current is passed. The current

Kitimat Smelter design has more than 900 pots configured into 7 potlines that are

housed inside buildings called "potrooms."

The bottom and sides of each pot act as the cathode or negative electrode and contain

the molten electrolyte composed mostly of cryolite and aluminum fluoride. The alumina

ore is dissolved into this molten electrolyte in the pots. Carbon blocks suspended just

above the cathode, serve as the anode or positive electrode. When the electrical

current passes through the mixture, flowing from the anode to the cathode, the molten

aluminum molecules settle to the bottom of the “pot” while the oxygen combines with

36

the carbon of the anode. The carbon anode is continuously depleted by the reaction

and must be replaced.

Figure 8 - Aluminum manufacturing process Two different technologies are associated with the Hall-Heroult process:

• Söderberg technology (currently used in the Kitimat Smelter) “creates and bakes”

the anodes in place in each pot. The tops of the pots are uncovered and the

sides, although normally closed, must be opened regularly for variety of process

operations.

• Prebake technology “creates and bakes” the anodes in a separate facility. The

pots are totally enclosed and most process operations occur without opening the

pot enclosure.

The molten aluminum deposited at the bottom of the “pot” is removed regularly using a

vacuum siphon. It is then transferred in its molten state from the potrooms to one of

Kitimat Works' two casting centres. Here the metal is stored temporarily in gas-fired

holding furnaces. Alloying materials such as magnesium, copper, silicon, iron and

manganese are added to the aluminum to give it certain properties of strength,

hardness, corrosion resistance or weldability.

37

Once the aluminum is ready to be cast, it is poured into moulds in a machine known as

a direct chill casting machine. This machine uses water to cool the molten aluminum

once it has passed through the mould. The mould gives the aluminum its final shape.

(b) Smelter power requirements and smelter design Smelters operate continuously – 24 hours per day, 365 days per year. The power

supply must be available at all times. Smelters are therefore sized within the limits of

the reliably firm power supply.

Smelters require reliable power supply to avoid costly potline shutdowns caused by

power interruptions. Once power is lost, metal production ceases. After two hours,

restarting the process will result in increased manual intervention, increased health

exposure for workers, and increased environmental emissions loading. If the process

can be restarted, it will take many hours to stabilize the process and begin metal

production. If the power interruption is greater than four hours, the molten electrolyte in

the pots will begin to solidify. Once the electrolyte starts to solidify, the ability to restart

the smelting process is limited. If the supply of power is not restored within that critical

timeframe, the pot will become inoperable. Smelter equipment can also be damaged in

the shutdown and subsequent restart operations since these events push the

equipment to its limits.

The process required to restart a potline depends on the circumstances in which the line

was shutdown. If there was time to siphon metal from the pots and lower the anodes

into the metal, to prevent the electrolyte from freezing as a layer between the metal and

the anode, restarting the line would be much easier. For this to occur there would have

to be auxiliary power available. If the shutdown was the result of total loss of power,

restarting the process would be much more difficult since metal tapping and anode

lowering would not be possible. In this situation the anodes would have to be removed

and the cathode prepared before a restart could be initiated. This would require months

to complete and is labour intensive.

38

During the start-up of the modernized Kitimat Smelter, under ideal conditions with

anodes and cathodes fully prepared, 10 pots per week can be started. The restarting of

a potline would take much longer than the original start-up. While the pots are out of

service aluminum production is also lost. A restart would typically cost more than $35

million.

To ensure the level of reliability in power supply that is essential to an aluminum

smelting operation, Alcan designed redundant features into the Kemano System. The

Kemano Powerhouse has two additional turbine and generator systems above the

required capacity for the Smelter to provide for maintenance outages as well as

unexpected failures. As a result, the Kemano Powerhouse has generation capacity in

excess of Kitimat Smelter requirements. When more than six of the power generation

units are operating and the Reservoir has sufficient water available, more power can be

produced than is consumed in the Kitimat Smelter.

The annual rated production capacity of the Kitimat Smelter has been approximately

275,000 tonnes since 1967 when the last potline was completed. As noted previously,

the Kitimat Smelter is currently producing at a rate of approximately 240,000 tonnes per

year – close to 90% of its annual rated production capacity. Attached as Appendix E is

a graph and supporting data that shows the annual aluminum production at the Kitimat

Smelter from 1954 to 2006.

When Alcan completed construction of potlines 7 and 8 in 1967, the Kitimat Smelter

power requirements, at full production, increased to its current maximum requirements

of approximately 610 MW plus 20 MW for transmission line losses, for a total 630 MW.

Transmission line losses are an incidental effect of electricity transmission and will vary

with the load being transmitted. At the current 90% production rate, the Kitimat Smelter

requires approximately 568 MW, including transmission line losses.

Aluminum production consumes the largest portion of the power supplied to the Kitimat

Smelter. The Kitimat Smelter also requires considerable power for heating and the

39

operation of the other facilities at the site. The use of power for heating and other

auxiliary purposes will also affect the smelter power consumption. Approximately 20

MW on average is currently required to support the other facilities (casting, carbon

anode production, shops, offices, etc.). Auxiliary power consumption is typically highest

in the winter.

As part of the 1997 Agreement with the Province that settled the dispute over the

cancellation by the Province of the Kemano Completion Project (“1997 Agreement”),

Alcan and the Province entered into the Replacement Electricity Supply Agreement

(“RESA”). Under RESA, Alcan was granted an option to call on the Province to deliver

up to 175 MW of electricity for the purposes of aluminum production, subject to various

conditions. Alcan’s right to exercise this option expired at the end of 2006.

7.2 Power Requirements during Construction of the Modernization Project The conversion to AP technology at the Kitimat Smelter would occur in stages. Some of

the existing potlines would remain in operation while others are being converted to AP

technology and the related facilities are constructed. The first AP technology potlines

are expected to be in service in 2010. The full conversion to AP technology is expected

to be completed and in full operation at the end of 2012. Opportunities to extend

capacity beyond the initial design, in conjunction with the AP research and development

program, are expected by 2017. The infrastructure to allow this capacity increase is

being designed into the Modernization Project now.

The project duration is expected to be approximately five years. The construction will be

phased to allow the existing smelter to continue to operate while the new smelter is

being built. As new production is started, old production will be reduced accordingly.

The additional capacity of approximately 150,000 tonnes will be realized at the end of

the project when existing smelter has been shutdown completely.

40

The current plan is for the project to be built in three principle areas on the existing site:

the anode paste plant; the area around potline 7 and 8 operation; and in the field

directly north of existing smelter. Buildings and equipment that interfere with the new

site will be demolished or relocated.

The basic phases of the construction plan and the associated surplus power available

are shown in the graph in Figure 9. The graph shows the expected availability of power

for sale to BC Hydro based on the current construction plans.

Planned Average MW available (based on surplus @ 790 MW generation)

0

50

100

150

200

250

Jan-

06

Jan-

07

Jan-

08

Jan-

09

Jan-

10

Jan-

11

Jan-

12

Jan-

13

Jan-

14

Jan-

15

Jan-

16

Jan-

17

Jan-

18

Jan-

19

Jan-

20

MW

Pow er available today

Pow er available in the future

transition period

Figure 9 - Power available for sale during construction The amount of power available during the transition from Söderberg technology to the

AP 3X technology may change as the design, construction schedule, and ramp up plans

are refined. Section 5.13 of the 2007 EPA, allows Alcan and BC Hydro to adjust the

Tier 1 Electricity Quantities to accommodate such refinements. BC Hydro may withhold

its consent to the proposed adjustment if BC Hydro believes that the adjustment will

harm its rate payers. The adjustment contemplated in section 5.13 does not apply if the

41

modernization project does not proceed. If Alcan and BC Hydro agree to alter the Tier 1

Electricity Quantities under circumstances other than those contemplated in section

5.13, then an amendment to the 2007 EPA would be necessary. Alcan expects that BC

Hydro would file any such amendment with the Commission under Section 71 of the

Utilities Commission Act.

7.3 Power Requirements after completion of the Modernization Project Once the Modernization Project is complete, the annual rated production capacity of the

Kitimat Smelter would be approximately 400,000 tonnes per year. Alcan expects the

modernized Kitimat Smelter would require approximately 700 MW of power from Alcan’s

Kemano System (inclusive of transmission line losses) when operating at a production

rate of 400,000 tonnes.

Full production of 400,000 will take several years to achieve, since an operational “ramp

up” phase will follow completion of the construction.

The expected life of a cathode is six years. To avoid all pots failing simultaneously six

years after start up, Alcan will “pre-fail” selected pots during the first few operational

cycles to stagger the future life cycles of the pots.

7.4 Kitimat Smelter Operation after Modernization The greater efficiencies associated with the modernized smelter will make the Kitimat

Smelter one of the lowest cost smelters in the world. This will be an important

advantage over our competitors that operate older technology.

As high cost smelters are shut down around the world or if aluminum prices fall, there

would be strong incentive to shift production to lower cost smelters such as the

modernized Kitimat Smelter. Moreover, Alcan would want to maximize aluminum

production at Kitimat because the incremental cost of additional production (essentially,

raw material costs since the labour and capital would be largely fixed costs) should be

42

lower than the cost of new production elsewhere in the world. Further, Kitimat is

situated on the Pacific Rim which an area of strategic importance in the aluminum

industry.

Production at the Kitimat Smelter will vary over time based on market conditions.

However, a low-cost modernized Kitimat Smelter would be much better able to weather

market conditions relative to the existing Kitimat Smelter and most smelters in the world.

After modernization, the Kitimat Smelter will be rank in the lowest quartile of production

cost for smelters world-wide and would be one of the most productive in Alcan’s system.

Given the high cost of shutting down the smelter and the high profitability of operating

the new smelter, Alcan expects to run the modernized smelter at maximum production

as much as possible.

8. ALCAN POWER SALES 8.1 Development of the North Coast Grid Alcan’s Kemano System has been the only significant source of power supply for BC

Hydro’s North Coast region since the 1950’s. The next largest BC Hydro-owned

generation facility is a diesel power generator in Prince Rupert that is used as back up

source.

In the early 1950’s, the Kitimat area was undeveloped and not connected to the existing

provincial power supply infrastructure. Once Alcan’s operations began in 1954, Alcan

began supplying power to the residents of Kitimat in addition to the aluminum smelter.

Alcan built an electricity distribution system in Kitimat in the 1950’s. In the early 1960’s,

British Columbia Power Commission (“BCPC”), BC Hydro’s predecessor, built a 138 kV

transmission line from Kitimat to Terrace to serve the growing needs of Terrace. Alcan

began supplying power in 1961 to BCPC. Later during the 1960’s, BC Hydro extended

the transmission connections from Terrace to Prince Rupert and the Kitsault region. BC

43

Hydro purchased Alcan’s local distribution system in 1967, and assumed exclusive

control of the distribution of power in this region.

Alcan has sold Kemano power to third parties since the commissioning of its power

generation facilities in 1954.4 Alcan has sold power to BC Hydro and its

predecessors since the early 1960’s. All of Alcan’s power sales have been delivered

at the Kitimat Busbar since BC Hydro’s purchase of the Kitimat distribution system in

1967.

In 1978, BC Hydro completed the extension of its transmission line from Prince George

to Terrace, thereby connecting the isolated regional coastal grid to BC Hydro’s

provincial power grid. The region served by BC Hydro's transmission line west of Prince

George to Kitimat is referred to as the “North Coast” region of BC Hydro’s transmission

system. Attached as Appendix F is a schematic based on information received from

BC Hydro that shows the capacity of the transmission lines from Kemano to Prince

George and the power requirements of the community load centres served by BC Hydro

along its transmission line to Prince George.

Given that the Kemano System is located at the end of the BC Hydro’s transmission line

from Prince George, it provides a critical source of local reliability and reactive support

to the BC Hydro system. BC Hydro customers receive better and more reliable service

than they would otherwise. With support from the Kemano System, the North Coast

can continue to run as an “island” if the transmission line from Prince George is

interrupted. As a result, BC Hydro and BCTC have been able to avoid significant

additional capital expenditure to upgrade the reliability of their transmission line.

8.2 Interconnection with BC Hydro’s System In 1978, Alcan and BC Hydro entered into the 1978 Exchange Agreement which was a

comprehensive “inter-tie” agreement that governed the exchange of power between the

4 See Appendix C for a graph showing the historic power sales.

44

Alcan and BC Hydro power systems, including emergency power, power during

maintenance outages, storage, equichange, inadvertent transfer, and the exchange or

sale of excess power. Pursuant to the 1978 Exchange Agreement, Alcan and BC Hydro

established an operating committee to implement and administer the agreement. BC

Hydro and Alcan have worked cooperatively for many years under through this

arrangement.

Alcan’s ability to deliver power to BC Hydro’s system exceeds BC Hydro’s ability to

deliver to Alcan’s system. This difference is related to the configuration and capacity of

the transmission line to Terrace and the remote location of the Kitimat Smelter – at the

far end of the transmission line from Prince George with many customers in between.

The Alcan tie-line between the Kitimat substation and BC Hydro’s Minette Bay

Substation is a 287 kV circuit (2L103). According to BCTC System Operating Order 7T-

30, Alcan’s transmission delivery capability to BC Hydro ranges from 295 MW to 380

MW (depending on smelter load) under a standard configuration with no equipment

outages.

BC Hydro’s transmission delivery capability to Alcan is up to 150 MW under a standard

configuration with no equipment outages. Because of the variability of BC Hydro’s

customer load on its transmission line from Prince George, BC Hydro’s transmission

delivery capability can be constricted, particularly during high load hours in the winter.

8.3 Power Sales to BC Hydro and to Powerex Alcan currently supplies power to BC Hydro under a Long Term Electricity Purchase

Agreement (“LTEPA”) which is a power supply contract that was originally signed in

1990. Under the original LTEPA, Alcan agreed to sell 285 annual aMW at a 95% load

factor to BC Hydro during the term January 1, 1995, to December 31, 2014. That

delivery commitment was subsequently amended in 1997 following the 1997 Agreement

45

to become 140 annual aMW at a 95% load factor. The delivery point is the Kitimat

Busbar.

In September 2001, Alcan and Powerex entered into a Framework Agreement that

includes the standard terms and conditions applicable to energy transactions between

the companies. Since then, Alcan has transacted a series of short-term power sales

with Powerex through the exchange of “transaction letters”.

On 22 December 2004, Alcan gave notice to BC Hydro pursuant to LTEPA that Alcan

was recalling all of the LTEPA power effective on 1 January 2010 for its own industrial

purposes.

The 2007 EPA replaces LTEPA. The 2007 EPA expands the services that Alcan will

provide and extends the term of the arrangement to 2034. Further, it consolidates

Alcan’s power sales to BC Hydro and Powerex into one contract.

Alcan has sold electricity to BC Hydro or its predecessor since 1961. Alcan's long-

standing relationship as a supplier to BC Hydro has served both BC Hydro and Alcan

well. The 2007 EPA will continue this relationship with an expanded package of high

value products, including scheduling, capacity, equichange and co-ordination rights that

few other resources can offer. The 2007 EPA increases the integration and

coordination between the systems of BC Hydro and Alcan which will optimize use of the

resource and enhance the efficiency and benefits of both systems.

Nechako reservoir inflows (m3/s)Days per month 31 28 31 30 31 30 31 31 30 31 30 31

JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DECAverage from

Jan to Dec%LTA (1955-

2006)Difference

(%)Difference

(m3/s)Water year

Nov-Oct%LTA (1955-

2006)Difference

(%)Difference

(m3/s)Statistics 1931-2006

Minimum 41.9 31.1 30.0 42.2 163.1 276.7 197.8 88.6 40.5 59.0 18.0 37.9 128.8 66% -34% -65.3 131.3 68% -32% -63.1Average 91.2 76.5 65.2 114.9 373.1 493.6 335.6 189.6 135.4 148.5 154.0 123.4 192.3 99% -1% -1.2 192.5 99% -1% -1.9

Maximum 173.5 205.2 188.6 299.4 686.6 835.1 713.7 479.6 322.0 343.3 319.1 354.3 345.6 178% 78% 151.5 337.9 174% 74% 143.5Statistics 1955-2006

Minimum 46.0 35.7 38.4 48.7 201.0 276.7 197.8 88.6 40.5 59.0 18.0 37.9 128.8 66% -34% -65.3 133.1 68% -32% -61.3Average 96.3 81.8 69.0 126.9 409.3 496.5 322.9 174.0 126.6 153.8 150.2 114.7 194.1 100% 0% 0.0 194.4 100% 0% 0.0

Maximum 173.5 205.2 188.6 299.4 686.6 835.1 713.7 479.6 283.7 343.3 319.1 354.3 345.6 178% 78% 151.5 337.9 174% 74% 143.51931 100.2 114.1 87.2 82.7 214.4 395.3 359.9 206.1 136.5 95.4 105.9 88.9 165.8 85.4% -14.6% -27 100%1932 57.5 50.4 64.8 91.7 286.8 382.6 316.0 242.1 194.8 171.9 173.0 282.6 193.8 99.9% -0.1% 2 171.9 88.4% -11.6% -23 100%1933 107.6 65.7 43.3 69.9 255.1 380.9 360.8 246.6 157.4 119.5 254.3 317.7 199.1 102.6% 2.6% 7 189.5 97.5% -2.5% -5 100%1934 122.9 131.7 94.6 185.8 486.5 431.5 318.8 247.8 180.7 273.3 229.9 169.1 240.1 123.7% 23.7% 48 254.7 131.0% 31.0% 60 100%1935 71.4 102.8 98.3 79.6 347.7 498.4 386.8 226.5 138.8 114.7 191.1 117.2 198.2 102.1% 2.1% 6 205.8 105.9% 5.9% 11 100%1936 86.1 51.0 37.4 56.6 273.0 434.7 282.9 175.8 134.8 175.8 257.7 286.0 188.4 97.1% -2.9% -4 168.6 86.7% -13.3% -26 100%1937 115.8 75.0 60.9 97.1 298.7 548.8 416.3 222.0 165.9 140.7 173.0 98.3 201.6 103.9% 3.9% 9 224.5 115.5% 15.5% 30 100%1938 79.3 62.9 50.7 105.6 254.6 421.4 373.5 213.2 144.7 114.4 105.9 95.1 169.0 87.1% -12.9% -23 174.8 89.9% -10.1% -20 100%1939 74.8 57.2 47.0 103.6 321.4 528.4 454.2 282.3 165.7 120.6 168.5 301.6 219.8 113.3% 13.3% 28 197.2 101.4% 1.4% 3 100%1940 123.5 74.2 67.7 170.5 419.7 493.3 390.8 271.8 178.1 145.8 169.9 104.8 218.3 112.5% 12.5% 26 234.9 120.8% 20.8% 40 100%1941 68.2 63.7 58.6 156.9 297.3 399.6 284.9 171.3 134.8 152.3 211.8 164.0 180.7 93.1% -6.9% -12 172.3 88.6% -11.4% -22 100%1942 80.1 71.6 49.6 67.7 246.6 475.4 311.2 180.7 118.9 100.8 105.6 75.9 157.3 81.1% -18.9% -35 173.5 89.3% -10.7% -21 100%1943 51.0 43.0 54.9 113.3 204.7 416.0 365.9 216.9 132.5 102.2 78.7 78.4 155.4 80.1% -19.9% -37 157.4 80.9% -19.1% -37 100%1944 58.0 55.2 41.3 62.9 163.1 326.2 261.6 174.1 123.7 146.7 117.5 99.1 136.2 70.2% -29.8% -56 131.3 67.5% -32.5% -63 100%1945 60.3 48.1 39.6 63.4 272.7 512.3 295.6 179.8 109.0 83.8 118.1 90.6 156.5 80.6% -19.4% -36 157.2 80.9% -19.1% -37 100%1946 51.0 41.3 37.4 42.2 297.6 554.7 472.6 231.9 123.2 118.1 88.1 67.1 177.9 91.7% -8.3% -14 182.4 93.8% -6.2% -12 100%1947 41.9 31.1 30.0 87.8 327.9 468.4 318.8 207.6 126.0 126.3 202.7 121.5 174.8 90.1% -9.9% -18 160.8 82.7% -17.3% -34 100%1948 96.0 75.3 47.9 64.6 298.5 726.3 417.1 257.4 193.7 149.8 122.3 73.3 210.6 108.5% 8.5% 18 221.3 113.8% 13.8% 27 100%1949 61.4 55.8 42.5 78.2 308.7 489.9 329.3 229.4 152.9 107.6 146.1 120.9 177.4 91.4% -8.6% -15 171.4 88.2% -11.8% -23 100%1950 67.4 45.6 44.5 51.5 166.8 430.7 438.3 228.2 146.7 125.7 143.3 122.0 168.3 86.7% -13.3% -24 168.4 86.6% -13.4% -26 100%1951 99.4 74.8 57.2 65.7 342.6 489.9 396.4 204.4 113.3 81.3 113.3 83.0 177.4 91.4% -8.6% -15 183.2 94.2% -5.8% -11 100%1952 54.9 53.2 49.0 69.4 242.4 453.1 402.1 233.9 141.6 213.5 142.2 92.3 179.7 92.6% -7.4% -13 176.6 90.8% -9.2% -18 100%1953 73.9 58.3 58.0 54.7 364.4 710.5 316.9 163.7 169.3 121.5 169.3 132.0 199.7 102.9% 2.9% 7 194.1 99.8% -0.2% 0 100%1954 121.5 58.6 105.6 109.3 380.3 721.5 443.7 351.7 322.0 181.2 307.0 235.6 279.0 143.8% 43.8% 87 258.9 133.2% 33.2% 64 100%1955 120.42 76.73 61.38 65.18 200.99 370.92 294.62 170.48 109.10 143.32 116.99 80.93 151.4 78.0% -22.0% -43 180.1 92.6% -7.4% -14 100%1956 53.01 35.65 39.63 86.47 296.25 291.06 234.03 147.11 68.47 139.45 261.48 158.32 151.6 78.1% -21.9% -43 133.1 68.5% -31.5% -61 100%1957 102.15 75.22 66.77 72.65 550.80 450.08 242.81 310.61 150.39 84.32 192.84 354.35 222.3 114.6% 14.6% 28 211.3 108.7% 8.7% 17 100%1958 169.08 106.32 81.25 177.81 624.07 539.59 231.43 116.74 161.49 186.84 135.73 125.10 221.9 114.3% 14.3% 28 246.0 126.5% 26.5% 52 100%1959 116.56 82.87 71.21 127.40 465.99 634.26 446.78 220.66 258.55 177.63 214.43 203.25 252.4 130.0% 30.0% 58 239.3 123.1% 23.1% 45 100%1960 100.53 73.20 76.94 153.93 445.19 521.47 401.01 211.52 128.98 205.00 133.43 99.94 213.5 110.0% 10.0% 19 228.9 117.7% 17.7% 35 100%1961 89.08 124.81 79.85 138.42 553.20 503.62 304.64 144.67 149.83 187.87 167.33 92.25 211.7 109.1% 9.1% 18 209.6 107.8% 7.8% 15 100%1962 135.36 144.15 67.16 119.66 369.39 605.84 440.72 243.87 111.12 247.16 249.27 181.91 243.5 125.4% 25.4% 49 229.1 117.8% 17.8% 35 100%1963 107.75 113.13 78.50 114.60 371.25 382.16 358.44 179.84 141.11 203.53 137.29 118.47 192.8 99.3% -0.7% -1 207.4 106.7% 6.7% 13 100%1964 128.20 100.71 71.83 84.58 285.31 815.92 582.30 280.62 193.94 241.40 127.51 75.90 249.6 128.6% 28.6% 56 254.0 130.7% 30.7% 60 100%1965 90.16 89.06 66.27 125.49 349.29 412.53 323.02 164.36 89.53 343.28 202.64 124.20 199.1 102.6% 2.6% 5 188.8 97.1% -2.9% -6 100%1966 102.27 69.79 78.21 191.94 422.24 538.05 392.30 201.77 164.21 227.46 197.81 118.70 226.2 116.5% 16.5% 32 227.0 116.8% 16.8% 33 100%1967 83.77 96.25 61.32 69.55 467.30 718.04 329.28 179.56 149.65 254.95 144.16 98.42 221.5 114.1% 14.1% 27 227.6 117.1% 17.1% 33 100%1968 166.66 155.87 102.91 102.00 638.74 554.43 422.96 249.44 183.60 266.68 247.18 130.80 269.3 138.8% 38.8% 75 258.1 132.8% 32.8% 64 100%1969 82.74 47.63 62.84 119.82 433.86 644.03 238.99 163.79 163.01 123.22 196.37 138.08 201.6 103.9% 3.9% 8 205.1 105.5% 5.5% 11 100%1970 64.45 54.02 54.35 64.16 259.21 400.64 239.98 149.10 90.76 59.02 47.48 57.99 128.8 66.4% -33.6% -65 147.8 76.0% -24.0% -47 100%1971 92.51 73.75 60.96 67.25 386.01 624.16 449.41 223.56 159.05 174.49 132.79 100.47 212.8 109.6% 9.6% 19 202.2 104.0% 4.0% 8 100%1972 83.37 90.82 92.52 101.01 533.15 794.24 555.48 232.55 125.43 125.06 127.13 92.86 247.0 127.3% 27.3% 53 248.1 127.6% 27.6% 54 100%1973 116.56 72.48 58.19 91.20 379.91 471.86 377.68 187.59 161.90 145.75 77.56 87.11 186.4 96.1% -3.9% -8 191.0 98.2% -1.8% -3 100%1974 92.16 68.14 60.18 109.66 406.26 557.48 422.92 217.46 120.81 252.03 83.18 120.70 210.3 108.4% 8.4% 16 207.0 106.5% 6.5% 13 100%1975 94.56 81.47 70.23 70.71 319.74 516.10 347.02 199.67 102.30 103.36 235.70 139.40 190.5 98.1% -1.9% -4 176.3 90.7% -9.3% -18 100%1976 127.82 96.59 86.01 140.79 676.35 835.08 713.72 479.61 283.73 221.80 263.09 202.55 345.6 178.1% 78.1% 151 337.9 173.8% 73.8% 144 100%1977 173.45 147.07 108.69 279.07 413.99 387.94 289.32 180.35 115.01 170.17 123.84 85.60 206.5 106.4% 6.4% 12 227.9 117.2% 17.2% 33 100%1978 63.04 49.63 47.81 103.54 358.29 482.27 237.00 176.59 92.56 129.89 237.78 113.54 174.8 90.0% -10.0% -19 163.0 83.8% -16.2% -31 100%1979 46.01 64.74 50.76 92.34 508.62 439.93 268.02 132.17 79.20 64.25 17.98 58.89 152.6 78.6% -21.4% -42 175.3 90.2% -9.8% -19 100%1980 61.17 51.03 38.40 76.82 331.83 332.06 197.81 117.33 180.33 175.97 195.84 277.03 170.3 87.8% -12.2% -24 137.2 70.6% -29.4% -57 100%1981 155.53 95.57 69.10 102.89 474.88 390.12 279.60 133.71 81.45 90.47 129.23 53.95 171.9 88.6% -11.4% -22 196.4 101.0% 1.0% 2 100%1982 75.93 64.09 45.24 48.69 276.13 580.08 279.01 123.53 133.68 120.71 76.37 55.71 156.8 80.8% -19.2% -37 161.0 82.8% -17.2% -33 100%1983 70.38 53.46 40.43 138.64 324.18 373.12 276.25 132.90 94.33 79.24 91.29 37.88 143.1 73.7% -26.3% -51 143.3 73.7% -26.3% -51 100%1984 103.13 95.03 84.74 116.86 263.03 381.69 292.59 193.33 127.04 166.00 105.79 92.07 168.9 87.0% -13.0% -25 163.1 83.9% -16.1% -31 100%1985 62.91 80.95 55.12 97.37 413.93 440.69 293.40 123.83 67.93 77.93 41.78 42.47 150.3 77.4% -22.6% -44 159.8 82.2% -17.8% -35 100%1986 77.11 60.59 67.60 101.46 297.58 612.95 355.77 180.11 96.40 83.94 104.01 61.43 175.3 90.3% -9.7% -19 168.5 86.7% -13.3% -26 100%1987 83.25 76.46 68.70 132.36 436.63 514.13 333.70 133.86 118.74 134.70 193.75 77.84 192.4 99.2% -0.8% -2 183.7 94.5% -5.5% -11 100%1988 69.37 66.01 58.19 85.91 312.28 397.61 228.34 151.17 127.47 142.32 111.00 114.09 155.8 80.3% -19.7% -38 159.5 82.0% -18.0% -35 100%1989 97.74 57.58 54.16 103.27 428.81 397.79 220.95 154.21 63.31 67.53 182.23 213.14 170.8 88.0% -12.0% -23 156.5 80.5% -19.5% -38 100%1990 138.04 90.87 59.01 157.28 406.02 426.24 283.27 122.92 40.45 98.34 113.35 135.01 173.1 89.2% -10.8% -21 185.4 95.4% -4.6% -9 100%1991 86.36 103.00 70.59 157.38 476.45 505.34 305.06 152.99 76.63 109.66 143.18 113.60 192.1 99.0% -1.0% -2 191.5 98.5% -1.5% -3 100%1992 96.30 123.49 137.88 240.68 357.39 467.72 250.33 88.60 156.18 233.27 139.76 83.23 197.9 102.0% 2.0% 4 200.8 103.3% 3.3% 6 100%1993 49.10 58.91 57.95 122.16 533.23 438.50 236.20 128.63 45.95 61.71 167.27 84.25 165.9 85.5% -14.5% -28 163.5 84.1% -15.9% -31 100%1994 88.82 78.81 83.11 254.06 432.20 394.24 266.61 114.36 113.83 111.50 100.95 87.44 177.5 91.5% -8.5% -17 182.7 94.0% -6.0% -12 100%1995 61.74 65.15 55.23 111.46 531.12 444.19 255.26 128.06 63.96 71.35 71.81 75.02 161.9 83.4% -16.6% -32 165.3 85.0% -15.0% -29 100%1996 142.64 83.66 72.13 298.76 422.04 588.09 395.75 193.50 187.05 149.39 132.57 90.60 230.1 118.6% 18.6% 36 223.8 115.1% 15.1% 29 100%1997 92.07 87.51 92.21 213.85 686.60 660.33 329.72 157.19 103.75 190.68 129.00 108.47 238.4 122.8% 22.8% 44 237.2 122.0% 22.0% 43 100%1998 78.08 57.93 52.22 87.37 530.59 366.73 219.77 103.62 78.22 154.69 84.55 91.70 159.7 82.3% -17.7% -34 164.7 84.7% -15.3% -30 100%1999 74.92 69.00 55.48 114.99 321.42 572.06 414.76 238.46 120.49 106.82 86.92 78.16 188.4 97.1% -2.9% -6 189.3 97.4% -2.6% -5 100%2000 53.65 40.85 49.56 79.34 214.96 400.31 273.52 129.15 106.03 136.75 150.74 82.53 143.5 73.9% -26.1% -51 137.9 70.9% -29.1% -57 100%2001 76.78 49.42 45.79 77.25 207.51 399.22 302.19 167.21 129.47 99.84 150.89 93.91 150.4 77.5% -22.5% -44 149.4 76.8% -23.2% -45 100%2002 81.93 76.70 52.16 95.42 422.16 796.53 437.21 197.90 224.27 108.33 181.93 104.03 231.8 119.4% 19.4% 38 228.4 117.5% 17.5% 34 100%2003 107.90 58.84 57.79 146.78 319.06 376.33 212.32 114.03 114.82 169.11 121.49 64.54 155.7 80.2% -19.8% -38 164.0 84.3% -15.7% -30 100%2004 68.76 49.33 65.08 166.96 340.99 276.65 239.44 138.31 198.63 216.52 319.05 209.83 191.4 98.6% -1.4% -3 162.8 83.8% -16.2% -32 100%2005 155.31 205.21 188.63 299.40 513.64 382.16 243.93 150.01 123.13 269.61 232.32 128.66 241.1 124.2% 24.2% 47 255.1 131.2% 31.2% 61 100%2006 97.85 63.61 56.62 102.33 292.96 413.83 225.24 113.89 58.41 94.98 181.42 145.67 154.3 79.5% -20.5% -40 157.0 80.8% -19.2% -37 100%

Average 1931 to 2006 192.33

Average 1955 to 2006 194.08

Average 1951 to 2006 195.14

Nechako ReservoirHistorical inflow (1955 - 2006)

for Water Year from Nov 1st to Oct 31st

20%

30%

40%

50%

60%

70%

80%

90%

100%

110%

120%

130%

140%

150%

160%

170%

180%19

55

1957

1959

1961

1963

1965

1967

1969

1971

1973

1975

1977

1979

1981

1983

1985

1987

1989

1991

1993

1995

1997

1999

2001

2003

2005

% L

TA

-160

-140

-120

-100

-80

-60

-40

-20

0

20

40

60

80

100

120

140

160

Diff

eren

ce c

ompa

red

with

the

aver

age

(mcs

)

Average Inflow = 194.1 cms

Nechako ReservoirHistorical inflow (1931 - 2006)

for Water Year from Nov 1st to Oct 31st

20%

30%

40%

50%

60%

70%

80%

90%

100%

110%

120%

130%

140%

150%

160%

170%

180%19

3119

3319

3519

3719

3919

4119

4319

4519

4719

4919

5119

5319

5519

5719

5919

6119

6319

6519

6719

6919

7119

7319

7519

7719

7919

8119

8319

8519

8719

8919

9119

9319

9519

9719

9920

0120

0320

05

% L

TA

-160

-140

-120

-100

-80

-60

-40

-20

0

20

40

60

80

100

120

140

160

Diff

eren

ce c

ompa

red

with

the

aver

age

(m3/

s)

Average Inflow (Nov55-Oct06) = 194.1 cms

Prior to the reservoir: Estimation based on river flows

Alcan Monthly Power Delivery to Smelter and BC Hydro1954 to July 2007

0

100

200

300

400

500

600

700

800

900

1954

1968

1969

1970

1971

1972

1973

1974

1975

1976

1977

1978

1979

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

Mo

nth

ly P

ow

er D

eliv

ery

(MW

)

Smelter Export / Import Net

Yea

rly S

umm

ary

Dat

a19

54 to

196

7

3-month Strike in 1970

Production cutback

BC Hydro Grid Intertie connected November, 1978

Potline 7 shutdown1994 to 1997

Energy import duringextreme low water 1986

PL 2 off 22 days due to Transformer failure

Production idled during low water cycle

Tun

nel C

olla

pse

Rep

air

1961

1954 - 1978 Alcan supplied area load demand 1979 to present: Alcan supplied contract, emergency and maintenance energy.

Transmission line tower lost in avalanche

Month _of Planned Outage Hrs.

Mtce Outage Hrs.

Forced Outage Hrs.

Forced Outages Count Gen Shed Hrs.

01/01/1994 72.99 13.77 93.21 8 0.0002/01/1994 0.00 0.00 0.00 0 0.0003/01/1994 0.00 92.37 2.66 3 0.0004/01/1994 0.00 26.22 0.35 3 0.0005/01/1994 1.32 586.02 8.31 2 0.0006/01/1994 33.02 0.79 172.49 3 0.0007/01/1994 7.76 1.96 483.76 11 0.0008/01/1994 70.37 472.16 35.01 30 0.0009/01/1994 301.44 8.59 161.68 15 0.0010/01/1994 16.28 5.37 153.70 12 0.0011/01/1994 75.13 70.70 236.75 6 0.0012/01/1994 52.16 3.33 207.27 1 0.0001/01/1995 41.81 0.77 0.62 2 0.4502/01/1995 1.37 67.07 12.33 1 0.0303/01/1995 1.20 560.27 6.01 8 0.4004/01/1995 498.43 5.94 40.84 14 0.2805/01/1995 475.14 1.26 256.46 2 0.0006/01/1995 181.37 2.14 57.53 9 0.1707/01/1995 70.37 81.02 5.02 8 0.7108/01/1995 4.79 62.22 44.98 19 0.3209/01/1995 7.53 231.91 6.48 3 0.0010/01/1995 8.39 150.08 1.47 1 1.1911/01/1995 0.10 365.85 18.11 7 0.5112/01/1995 3.81 72.12 12.08 9 0.1901/01/1996 69.27 58.35 14.50 2 0.2502/01/1996 1.90 289.20 4.28 3 0.1503/01/1996 487.61 0.00 0.00 0 0.0004/01/1996 119.89 78.15 552.37 2 0.0005/01/1996 15.15 20.80 755.53 2 0.6606/01/1996 0.00 0.00 737.27 4 0.1207/01/1996 0.00 0.00 765.88 2 0.1308/01/1996 0.00 0.00 841.90 2 0.9609/01/1996 0.00 0.00 720.00 1 0.1510/01/1996 0.00 0.00 745.00 1 0.4111/01/1996 0.00 0.00 740.00 1 0.2512/01/1996 0.00 12.73 744.00 1 0.3801/01/1997 11.83 0.00 744.27 2 0.4502/01/1997 0.00 289.05 204.88 2 0.1803/01/1997 419.45 185.75 0.00 0 0.0004/01/1997 400.10 4.77 11.57 3 0.0005/01/1997 46.55 10.32 15.95 3 0.0006/01/1997 34.90 14.35 16.80 5 0.0007/01/1997 27.80 20.32 729.70 3 0.0008/01/1997 27.80 20.32 193.88 2 0.0009/01/1997 76.13 5.88 0.00 0 0.0010/01/1997 121.08 1.05 18.73 1 0.0011/01/1997 84.12 0.20 5.37 1 0.0012/01/1997 10.93 0.00 0.00 0 0.0001/01/1998 161.77 0.15 0.27 1 0.0002/01/1998 22.22 451.25 0.00 0 0.00

Month _of Planned Outage Hrs.

Mtce Outage Hrs.

Forced Outage Hrs.

Forced Outages Count Gen Shed Hrs.

03/01/1998 13.20 744.00 0.00 0 0.1804/01/1998 1.05 439.38 0.00 0 0.0005/01/1998 19.35 162.72 8.28 9 0.0006/01/1998 265.72 1.98 0.00 0 0.0007/01/1998 618.90 3.08 0.00 0 1.3308/01/1998 337.47 66.82 0.87 3 1.0009/01/1998 60.77 141.67 0.00 0 0.0010/01/1998 383.83 0.00 2.88 2 0.0011/01/1998 82.73 302.00 3.28 2 0.0012/01/1998 56.03 0.00 3.68 2 0.0001/01/1999 160.02 0.00 0.00 2 0.0002/01/1999 262.82 0.00 0.22 3 0.0003/01/1999 586.22 0.00 0.00 0 0.0004/01/1999 407.65 0.00 0.00 0 0.0005/01/1999 384.17 0.00 3.80 1 0.0006/01/1999 60.32 0.00 1.38 4 0.0007/01/1999 176.12 0.00 5.25 5 0.0008/01/1999 471.83 0.00 0.30 2 0.0009/01/1999 77.58 0.00 3.15 3 0.0010/01/1999 133.17 0.00 0.00 0 0.0011/01/1999 391.87 0.00 0.00 1 0.0012/01/1999 149.13 0.00 12.37 2 0.4501/01/2000 163.00 0.00 26.23 1 0.0002/01/2000 320.52 0.00 0.00 0 0.0003/01/2000 229.65 0.00 0.33 2 0.0004/01/2000 309.80 0.00 3.02 2 0.0005/01/2000 161.10 0.00 3.72 3 0.0006/01/2000 440.82 0.00 0.00 3 0.0007/01/2000 110.38 0.00 9.67 8 0.0008/01/2000 81.68 0.00 31.97 4 0.0009/01/2000 485.43 0.00 27.58 11 0.0010/01/2000 470.02 0.00 1.30 5 0.0011/01/2000 773.48 0.00 2.52 1 0.0012/01/2000 302.80 0.00 0.00 0 0.0001/01/2001 515.15 0.00 2.33 4 0.0002/01/2001 253.53 0.00 9.12 4 0.0003/01/2001 110.80 0.00 0.00 0 0.0004/01/2001 720.65 0.00 3.83 1 0.0005/01/2001 586.67 0.00 2.00 3 0.0006/01/2001 287.80 0.00 67.78 2 0.0007/01/2001 231.60 0.00 0.00 1 0.0008/01/2001 236.32 0.00 59.98 2 0.0009/01/2001 271.50 0.00 0.00 1 0.9010/01/2001 744.93 0.00 0.00 0 0.0011/01/2001 631.28 0.00 2.37 5 0.0012/01/2001 361.50 0.00 0.00 0 0.0001/01/2002 219.50 0.00 27.80 1 0.0002/01/2002 280.43 0.00 24.60 3 0.0003/01/2002 213.17 0.00 0.00 0 0.0004/01/2002 348.92 0.00 0.00 0 0.00

Month _of Planned Outage Hrs.

Mtce Outage Hrs.

Forced Outage Hrs.

Forced Outages Count Gen Shed Hrs.

05/01/2002 562.67 0.00 199.98 5 0.0006/01/2002 127.13 0.00 24.07 3 0.0007/01/2002 29.77 0.00 0.07 1 0.0008/01/2002 50.90 0.00 26.72 6 0.0009/01/2002 532.57 0.00 0.00 0 0.0010/01/2002 744.77 0.00 0.00 0 0.0011/01/2002 544.72 0.00 0.00 0 0.0012/01/2002 0.33 0.00 9.33 3 0.0001/01/2003 240.00 0.00 0.50 2 0.0002/01/2003 31.17 0.00 1.00 1 0.0003/01/2003 150.83 0.00 0.00 0 0.0004/01/2003 415.83 0.00 1.07 1 0.0005/01/2003 770.62 0.00 22.83 2 0.0006/01/2003 609.17 0.00 1.10 1 0.0007/01/2003 264.55 0.00 72.88 3 0.0008/01/2003 100.02 0.00 8.80 11 0.0009/01/2003 346.55 0.00 23.50 1 0.0010/01/2003 105.75 0.00 28.58 15 0.0011/01/2003 717.10 0.00 0.00 0 0.0012/01/2003 22.63 0.00 1.53 1 0.0001/01/2004 89.22 0.00 0.17 1 0.0002/01/2004 417.15 0.00 0.00 0 0.0003/01/2004 405.57 0.00 1.71 3 0.0004/01/2004 47.98 0.00 2.73 6 0.0005/01/2004 154.23 0.00 0.00 0 0.0006/01/2004 21.73 0.00 145.88 1 0.0007/01/2004 44.87 0.00 95.02 4 0.0008/01/2004 220.10 0.00 18.77 2 0.0009/01/2004 678.83 0.00 48.25 1 0.0010/01/2004 634.32 0.00 0.00 2 0.0011/01/2004 761.20 0.00 0.00 1 0.0012/01/2004 406.00 0.00 26.58 2 0.0001/01/2005 71.77 0.00 13.83 8 0.7501/02/2005 365.47 0.00 0.00 0 0.0001/03/2005 326.82 0.00 13.98 8 0.0001/04/2005 79.90 0.00 0.00 0 0.0001/05/2005 126.63 0.00 0.60 4 0.6001/06/2005 81.57 0.00 4.68 22 2.6801/07/2005 53.15 0.00 11.35 12 1.0801/08/2005 153.28 0.00 1.88 4 0.6201/09/2005 75.47 0.00 1.20 10 1.2001/10/2005 105.07 0.00 0.53 3 0.5301/11/2005 131.02 0.00 0.00 0 0.0001/12/2005 30.47 0.00 2.17 2 0.0001/01/2006 38.73 0.00 55.53 3 0.0001/02/2006 104.55 0.00 0.53 3 0.1501/03/2006 93.48 0.00 2.20 1 0.0001/04/2006 350.17 0.00 0.00 0 0.0001/05/2006 654.08 0.00 79.23 3 0.0701/06/2006 550.93 0.00 0.00 0 0.00

Month _of Planned Outage Hrs.

Mtce Outage Hrs.

Forced Outage Hrs.

Forced Outages Count Gen Shed Hrs.

01/07/2006 91.88 0.00 180.78 21 0.8701/08/2006 115.90 0.00 0.00 0 0.0001/09/2006 136.93 0.00 0.02 1 0.0201/10/2006 247.35 0.00 0.20 2 0.2001/11/2006 163.97 0.00 0.00 0 0.0001/12/2006 254.77 0.00 0.00 0 0.0001/01/2007 180.75 0.00 0.38 2 0.3801/02/2007 686.00 0.00 0.32 1 0.0001/03/2007 211.45 0.00 6.43 6 5.6501/04/2007 218.28 0.00 16.88 1 0.00

Year Mt tons Period Avg Percent of Rated Capacity1954 18898 27500019551956 1968-2006 254181 92.431957 145144.041958 1477481959 1401161960 1738201961 1278031962 1619291963 1678601964 1941791965 2022301966 2137261967 2350981968 2427371969 2658791970 1705521971 2445141972 2557051973 2649831974 2652721975 2159331976 2247231977 2653981978 2700351979 2707861980 2727001981 2705371982 2497051983 2614221984 2754081985 2724931986 2730121987 2739501988 2747071989 2723311990 2715611991 2717291992 2728041993 2713251994 2510131995 2498371996 2538761997 2505901998 2623991999 2690602000 2717702001 2109772002 1910082003 2371872004 2441602005 2425082006 238470

Aluminum ProductionMetric Tons

1954 to 2006

0

25000

50000

75000

100000

125000

150000

175000

200000

225000

250000

275000

300000

1954

1956

1958

1960

1962

1964

1966

1968

1970

1972

1974

1976

1978

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

2002

2004

2006

Metric Tons

Business group or unit Slide 1 © 2 0 0 6 A L C A N I N C.

Alcan in British Columbia

BC OperationsSept 12th 2007

Paul HenningManaging Director BC Operations and Modernization Project

Business group or unit Slide 2 © 2 0 0 6 A L C A N I N C.

Outline

Alcan Inc. Global presence

Alcan Primary Metal Group

Alcan BC Operations

Kitimat Modernization Project

Conclusion

Business group or unit Slide 3 © 2 0 0 6 A L C A N I N C.

Alcan Inc.’s 4 Business Groups

BAUXITE AND ALUMINA PRIMARY METAL

ENGINEERED PRODUCTS PACKAGING

Business group or unit Slide 4 © 2 0 0 6 A L C A N I N C.

APM-BC provincial footprint

Business group or unit Slide 5 © 2 0 0 6 A L C A N I N C.

Kenney Dam, Nechako Reservoir

Business group or unit Slide 6 © 2 0 0 6 A L C A N I N C.

Skins Lake Spillway

Only 2 release points:Tahtsa intake (Kemano)spillway

Provides: water managementcontrol flows

Business group or unit Slide 7 © 2 0 0 6 A L C A N I N C.

Kemano System

Business group or unit Slide 8 © 2 0 0 6 A L C A N I N C.

Kemano Power Station

World Class asset

8 generators

@ 125MW installed (1000MW)Max Dependable 860MW

(hydraulic restriction)

Target is 790MW to optimize balance power generation and water spill700MW 100% reliable

Smelter load ~568 MW inc line losses

Business group or unit Slide 9 © 2 0 0 6 A L C A N I N C.

123MW

52MW

95MW

129MW50

MW

Alcan / BC Hydro North Coast Region

Business group or unit Slide 10 © 2 0 0 6 A L C A N I N C.

Nechako Historical Elevation 1955 to 2005

2765276627672768276927702771277227732774277527762777277827792780278127822783278427852786278727882789279027912792279327942795279627972798279928002801

1/Jan 31/Jan 2/Mar 2/Apr 2/May 2/Jun 2/Jul 1/Aug 1/Sep 1/Oct 1/Nov 1/Dec 31/Dec

Elev

atio

n [ft

]

1955 1956 1957 19581959 1960 1961 19621963 1964 1965 19661967 1968 1969 19701971 1972 1973 19741975 1976 1977 19781979 1980 1981 19821983 1984 1985 19861987 1988 1989 19901991 1992 1993 19941995 1996 1997 19981999 2000 2001 20022003 2004 2005

Business group or unit Slide 11 © 2 0 0 6 A L C A N I N C.

Business group or unit Slide 12 © 2 0 0 6 A L C A N I N C.

B.C. Operations statistics

Started in 1954

Technology: VSS (vertical stud Soderberg)

Production: 245kt/year

Products: Sheet, Billet and Remelt

Market: 85% Asia/Pacific, 15% NA

Power Generation: 793 MW average

Capex investment at ~ $46 million/year

Direct contribution to B.C. economy in 2006 ~ $275 million

$12 million for water rights (BC Prov)

1,500 employees

Smelter Site

Business group or unit Slide 13 © 2 0 0 6 A L C A N I N C.

Modernization Project highlights

Announced to Market on Aug 14th 20063 conditions to be met before final board approval.

AP3x technology will take Kitimat/Kemano operations to World Class standards

Up to 400,000 tonnes/year of low cost aluminum production

Significantly reduces environmental impact

PAH, Fluorides, GHG

Optimizes Kemano power availability

Agreement with BC Hydro “Smelter First” provision

Uses more power for smelter than ever before.

Wave of retirements over next 5-6 years - natural attrition to land at about 1000 jobs at the end of 2011 to last for another 35-50 years.

Investment of US$1.8 billion to modernize and expand Kitimat Works

Business group or unit Slide 14 © 2 0 0 6 A L C A N I N C.

Today

closed closed

1&23-5

7&8

DC4

Paste

New 400,000-tpy potline to be concentrated in Lines 7-8 area

Business group or unit Slide 15 © 2 0 0 6 A L C A N I N C.

Kitimat Sodeberg AP35

Metal Capacity (tonnes)EfficiencyPower Consumption (Kwhrs /kg)Operating Amperage (KA)Numbers of CellsTotal Power requiredTier 1 Power to sellEnvironment Fluoride EmissionGreen house Gas ( C02 eq / T Al)Employees

275,000T ~ 400,000T86 - 88% 94 - 95%18.0 - 19.0 13.0 - 13.5121KA 390KA780 360568MW 697MW140MW 33MW1.8Kg F / T ~0.5Kg F /T5.5 <1.81550 ~1000

Technical Details

Business group or unit Slide 16 © 2 0 0 6 A L C A N I N C.

Conclusion

Respects existing obligationsProtection of fish and fish habitatSafety of people and facilities

Smelter First

One customer

Coordination of BCH and Alcan’s system adds valueRight to Purchase stored energy

Extended TermCertainty of revenue stream

Good contract for Alcan

Business group or unit Slide 17 © 2 0 0 6 A L C A N I N C.

Apendix

Business group or unit Slide 18 © 2 0 0 6 A L C A N I N C.

Health

Business group or unit Slide 19 © 2 0 0 6 A L C A N I N C.

PAH Emissions 1995 - 2005

124

174 172

260

184 174

215194

208192

173

50

50

100

150

200

250

300

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 AP39

Year

tonn

es /

year

Business group or unit Slide 20 © 2 0 0 6 A L C A N I N C.

Environment

Business group or unit Slide 21 © 2 0 0 6 A L C A N I N C.

Gaseous Fluoride Emissions1995-2006

1.7

2.0

2.5

3.2

2.2

1.9

1.41.6 1.7

1.9

1.5

0.5

1.8

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 AP39

kg/to

nne

(kg/

t)

permit

Business group or unit Slide 22 © 2 0 0 6 A L C A N I N C.

GHG Emissions Kitimat Works 1998 - 2006

8.87.9 7.6

6.6 6.1 6.55.3

4.7

7.0

1.8

0.01.02.03.04.05.06.07.08.09.0

10.0

1998 1999 2000 2001 2002 2003 2004 2005 2006 AP39

Tonn

es C

O2

per t

onne

Alu

min

umGHG reduced by ½ million tonnes per year