Page 1

Regional Waste-to-Energy Collaborative

Martinique

Island Energy Transitions: Pathways for Accelerated

Uptake of Renewables

June 23, 2015 Dr. Andreas Christian Taeuber, GIZ REETA-Program

c/o CARICOM ENERGY PROGRAM, Guyana

Page 2

+ EUR 3 mio. • Financial sector

CARICOM-GIZ PROJECT PORTFOLIO IN THE FIELD

OF ENERGY

26.06.2015

2011 2012 2013 2014 2015 2016 2017 2018 … …

SFF-CDB

EUR 0,25 mio.

CREDP II

04/2008-03/2016

EUR 8,95 mio.

REETA

07/2013-06/2017, EUR 5 mio. • Regional strategy

• Capacity building

• Private sector

• Model projects

Page 3 26/06/2015

Component 1

Regional

Strategy

(C-SERMS)

Objective:

Regional and national stakeholders in the field of Renewable Energy and

Energy Efficiency are increasingly able to meet the political, organizational

and technical challenges of a growing market in the Caribbean region

Component 2

Capacity

Building

updated

REETA – OBJECTIVE & COMPONENTS

Component 3

Private Sector

Component 4

Model Projects

Component 5

Financial

Sector

New!

Page 4

REGIONAL WASTE TO ENERY COLLABORATIVE

Actor, Donor, Development Partner,

Stakeholder Activities

CARICOM ENERGY UNIT Harmonization of political and regulatory

framework, coordination

GIZ REETA PROGRAM Technical Assistance, development of bankable

projects

CCCCC and SIDSDOCK Project development and co-funding

OECS Regional framework setting

CLINTON FOUNDATIO N Project development and organizing financing

OTHERS Grants, technical assistance

Close cooperation and realistic approaches

needed!

Page 5

WASTE TO ENERGY

• Incineration: Controlled Burning

of Waste

• Anaerobic Digestion: treatment

of the organic fraction of solid and

liquid wastes

• Secondary Fuels: Conditioned

recycled waste or recycling

residues

• Origin of Wastes: households,

hotels & restaurants, markets,

agro-industries (sugar, rice, etc.),

breweries and distilleries, animal

farms (chicken, pig, etc.),

slaughterhouses, vegetable and

fruit farms, wastewater treatment

Page 6

CARICOM Organic and Plastic Waste Potentials

CARICOM

Status Country

Population

(last census)

Estimated average

Waste

(kg / Year)

1.5 Kg/day per

person

Estimated Waste

(Tonnes / Year)

Organic

Waste

(%)

Plastic

Waste

(%)

Organic

Waste

(Tonnes /

Year)

Plastic

Waste

(Tonnes /

Year)

Full ANTIGUA & BARBUDA 91.295 49.984.013 49.984 50% 10% 24.992 4.998

Full BAHAMAS

(COMMONWEALTH OF) 321.834 176.204.115 176.204 50% 10% 88.102 17.620

Full BARBADOS 277.821 152.106.998 152.107 50% 10% 76.053 15.211

Full BELIZE 340.844 186.612.090 186.612 50% 10% 93.306 18.661

Full DOMINICA

(COMMONWEALTH OF) 72.337 39.604.508 39.605 50% 10% 19.802 3.960

Observer DOMINICAN REPUBLIC 9.445.281 5.171.291.348 5.171.291 50% 10% 2.585.646 517.129

Full GRENADA 109.593 60.002.168 60.002 50% 10% 30.001 6.000

Full GUYANA 735.554 402.715.815 402.716 50% 10% 201.358 40.272

Full HAITI 9.996.731 5.473.210.223 5.473.210 50% 10% 2.736.605 547.321

Full JAMAICA 2.889.187 1.581.829.883 1.581.830 50% 10% 790.915 158.183

Full MONTSERRAT 4.900 2.682.750 2.683 50% 10% 1.341 268

Full SAINT KITTS AND NEVIS 54.961 30.091.148 30.091 50% 10% 15.046 3.009

Full SAINT LUCIA 173.765 95.136.338 95.136 50% 10% 47.568 9.514

Full SAINT VINCENT AND

THE GRENADINES 103.000 56.392.500 56.393 50% 10% 28.196 5.639

Full SURINAME (REPUBLIC

OF) 566.846 310.348.185 310.348 50% 10% 155.174 31.035

Full TRINIDAD AND TOBAGO 1.223.916 670.094.010 670.094 50% 10% 335.047 67.009

Source SIDS DOCK 2015: Waste estimation based on mid values from different Caribbean States. No scientific research, only assumptions which may wary accordingly in single countries.

Assumption: 1,5 kg Waste production per day per person. 50% is Organic Waste (Studies show between 40% to 60% and 10%-15% plastic waste).

Page 7

CARIBBEAN REGION WASTE-TO-ENERGY (WTE)

INDICATIVE PROJECT PIPELINE

COUNTRY PROJECT TITLE

ESTIMATED

PROJECT

COST

(USD)

FINANCING

REQUIRED

(USD)

ANTIGUA &

BARBUDA

Integrated Bioenergy and Food Production: The

project pre-feasibility has been completed for this

project that would establish of approximately 500

acres of grain sorghum on the island of Barbuda

that would be used to produce broiler meat, and the

waste produced would be used to generate biogas

fuel which would displace diesel for power

generation.

5.400.000 5.400.000

BAHAMAS

(COMMONWEALTH

OF)

Feasibility Study for the establishment of a Solid

Waste-to-Energy Facility on New Providence: The

island of New Providence generates in excess of

1,000 tons, per day, of solid waste, dominated by

packaging material, enough raw material to export

in excess of 20MW of firm power to the grid from a

waste-to-energy facility. The feasibility study will

determine the best system to use and relative cost

benefits to aid government decision making in

developing a public/private partnership to

implement the project if proved feasible.

250.000 250.000

Page 8

CARIBBEAN REGION WASTE-TO-ENERGY (WTE)

INDICATIVE PROJECT PIPELINE

BELIZE

Feasibility Study on Distributed Generation to Generate

Base Load Power for Grid Connection: Community

waste-to-energy projects; Feasibility studies will identify

systems that are operational at the scale of 500-2000

residences than can generate reliable base load power

for grid connection.

30.000 30.000

BELIZE

Belize Biogas from Wastewater and Manure: The

Government of Belize and SIDSDOCK are developing an

anaerobic digestion/biogas project at the waste water

facility in San Pedro Ambergris Caye. The project will

use livestock manure. The developers plan to negotiate a

PPA with Belize Water Services Limited (BWSL). The

project will produce biogas for electricity, fertilizer

resulting from the sludge by product for sale to local

farmers and carbon offsets for sale in the carbon market

3.000.000

BELIZE

Demonstration Project for a Low Energy Waste Water

Treatment System: The majority of small communities in

island states do not have waste water treatment

systems. Alternative waste water system modular in

design that uses active biofilms for the decomposition of

organic matter, requiring significantly less energy input

than the conventional sewage systems will be

demonstrated to provide evidence of feasibility,

comparative energy requirement and potential

contribution to water resource availability as part of

climate change adaptation

150.000 150.000

Page 9

CARIBBEAN REGION WASTE-TO-ENERGY (WTE)

INDICATIVE PROJECT PIPELINE

DOMINICAN

REPUBLIC

Commercial demonstration project for sea water desalination --

project is to provide potable water, using the waste heat from the

power plant as the primary energy source. Waste heat from power

plants is major non-utilized energy resources in the SIDS, and

could be used to improve availability of potable water, as

projection are for island states will be become increasingly fresh

water stressed and will have to depend increasingly on

desalination and water harvesting, and recycling of waste water. 1.000.000

GRENADA

Waste-to-Energy Feasibility Study: The mountainous topography

of the country presents major challengers for the collection and

disposal of solid waste. The current situation is resulting in

pollution of the coastal area and deteriorating air quality for

communities located in proximity to the facility. Current volumes

of waste indicate feasibility for a 2-3 MW base load facility 55.000 55.000

Page 10

CARIBBEAN REGION WASTE-TO-ENERGY (WTE)

INDICATIVE PROJECT PIPELINE

JAMAICA

Feasibility study for a waste to energy system for the production of a

minimum of 30 MW from the Riverton City solid waste facility, which

handles more than 1000 tons per day of mixed solid waste,

comprised of solid waste collected from households, businesses,

industry and from cleaning of streets and highways. The solid waste

disposal facility is located 2 miles for the major sewage treatment

which is being expanded to treat some 60 million gallons of waste

water per day. The feasibility study will determine the best option for

maximizing the use of both resources for the production of base

load power to lessen dependence on diesel fuel

280.000

REGIONAL

Preparation of Feasibility Studies: Project involving Technical

Assistance to Caribbean Governments to evaluate the potential

viability of waste-to-energy projects as an alternative to the ongoing

social, environmental and financially costly disposal that is now the

case. Due to limited land availability, growing population and

increased importation of goods, many countries are facing problems

with the management of the various forms of waste, ranging from

municipal, sewage, medical, to agro-industrial waste. In many cases,

there is improper disposal of waste. The potential projects to be

evaluated include:

· Utilization of rum distillery waste

· Conversion of sewage

· Conversion of municipal solid waste and other available biomass

resources into energy. Projects identified as potentially feasibility

will be developed through private-public partnerships and the funds

provided would be refunded to support development of other

projects

1.200.000 1.000.000

SAINT LUCIA

Sewage Waste to Energy: Project is intended to produce fuel from a

combination of sewage and biomass from markets and other

sources to provide 1 MW of base load power and 3 MW of thermal

heat for cooling of commercial buildings in downtown Castries

7.000.000 Pre-feasibility Study

On- going

SAINT LUCIA

Solid Waste to Energy: the aim is to implement a project that

requires no subsidy from tipping fees to produce 10 MW base load

power to the grid. From the waste at the Castries solid waste facility 25.000.000

Page 11

CARIBBEAN REGION WASTE-TO-ENERGY (WTE)

INDICATIVE PROJECT PIPELINE

SAINT LUCIA

Waste Heat to Power Project: The base load of the

country is 40 MW and based on waste heat

recovery system there is potential for a project to

recover up to 4 MW of base load power.

Prefeasibility has shown power from such a

project at US$0.21per kwh 21.000.000

SAINT VINCENT AND

THE GRENADINES

Sewage and biomass property waste to Energy:

The new Argyle International airport is being

established a low carbon facility. Energy for

lighting and cooling will be provided 100 kw PV

system, and other RE combination including

biogas. Based on preliminary assessment there

se is enough inlay materials carry the potential

to produce enough biogas for 0,5 MW electricity

for 8,300 operational hours per year.

3,000,000

TOR for

prefeasibility study

being prepared

Page 12

WASTE TO ENERGY INVESTMENTS IN THE

CARIBBEAN

Country Key facts

Nevis Investor: US renewable energy firm Omni Alpha

Waste to energy (gasification) in combination with solar PV plant to provide

2250 MWh of electricity per year

Investment size: USD 20 million

Capacity: 25 t/day, 1 MW of electricity

Implementation: 12 month implementation started in Q4 2014

Barbados Investor: UK based firm Cahill Energy

Investment size: Up to $240 million

Location: Vaucluse, St. Thomas.

Technology: plasma gasification

Capacity: up to 650 tons of solid waste per day providing 25% of Barbados’

energy needs

Anguilla Investor: Global Green Energy from US

Location: Corito Bay

Technology: Pyrolysis

Capacity: 20 t/day.

BVI Investor: Consutech Systems LLC

Technology: Incineration

Capacity: 1.7 MW of electricity

[

Page 13

THE GRENADA CASE

• Municipal Solid Waste

• High-calorific effluents

• Wastewater

• Agricultural / Animal

Waste

• Plant Residues

• Slaughterhouse Waste

Page 14

THE ENERGY SECTOR IN GRENADA

• Grenada has one of the highest electricity prices in the Caribbean and

worldwide: 40 US Cents/kWh

• Main supply provided by diesel generators (175 GWh in 2013)

• Renewable Energy (RE) has high potential

• Long-term electricity monopoly hinders the promotion of RE

• Liquefied Gas is an important domestic and commercial energy source -

4500 tons have been imported in 2010

• In 2014 average price for LPG is USD 16,67 for a 20 pound cylinder and

USD 82 for a 100 pound cylinder.

Page 15

INSTALLED CAPACITY AND PEAK ENERGY

DEMAND IN GRENADA

Grenlec Annual Report , 2013

25,5 25,9 23,8

25,7

27,9

29,4 30,5 30,8 30,3 30,2 29,2

0,0

5,0

10,0

15,0

20,0

25,0

30,0

35,0

2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013

Peak D

em

an

d (

MW

)

0,3 MW Solar

Page 16

SOLID WASTE MANAGEMENT IN GRENADA

Waste Categories %

Organic Waste 27.1

Site cleaning waste 21.30

Plastics 16.4

Paper Cardboard 13.6

C&D 11.6

Glass 3.1

Metal 2.4

Textiles 2.3

Tires 0.90

Household Bulky Waste 0.70

Street sweeping waste 0.60

• 40 000 tons of domestic and

commercial waste/year

• Domestic waste has about 45 %

organic fraction (27 % based on

total waste)

• Landfill space is very limited,

new developed cells will last

only 7 years without recycling

concept

• Incineration would prolong

landfill use to 25 years, but is

economically not viable.

Page 17

WASTE MANAGEMENT AND CLIMATE CHANGE

• Organic waste in landfills emits Methane over decades

• Landfill gas can be recovered/flared from engineered landfills

• Anaerobic digestion of organic waste as a means of methane reduction

• Recycling can generate new raw material (e.g. PET, Aluminum) or

secondary fuels – reduction of fossil fuels

• Management of wood waste as fuel/secondary fuel

• Recycling prolongs the life span of existing landfills – improved

management

• Incineration – waste as renewable energy source

• Climate adaptation by protecting water resources and enriching soils

with organic fertilizers from processed waste

Page 18

INCINERATION AS AN OPTION FOR GRENADA

• Advantage with regard to volume reduction of waste and energy output 18 GWh/year

• High Investment Costs: 50 Mio. USD

• High O&M Costs

• 40 000 t/year is half of the viability limit for such systems.

• Increase of tipping fee, commercial fees or high subsidy via energy sector required

Page 19

WASTEWATER MANAGEMENT (NAWASA)

• Sewage system in St. Georges: fall out pipe at the stadium bridge

with an average flow of 130.000 gal/day (28,6 m3/ day or 10.451

m3/year)

• Sewage system along Grand Anse: fall out pipe at Point Salines with

an average flow of 660.000 gal/day (145 m3/day or 53.062 m3/year)

• Coarse grid as mechanical treatment/pump protection

• No large-scale treatment planned by NAWASA

• Non-sewered households have septic tanks

• Accumulated septage can be estimated at about 34.700 m3/year

Page 20

MECHANICAL FILTER SYSTEM FOR WASTEWATER

• Two-stage micro filtration

technology (6 - 0,1 mm)

• TSS reduction of 30-60 % and a

COD reduction of 10-30 % with

minimal land requirements and

reasonable costs

• Solid residues have high energy

content with regard to biogas

production

• Improves water quality

• Provides input for biogas

• Fertilizer

Page 21

TYPICAL INPUT MATERIAL FOR ANAEROBIC

DIGESTION

• Animal manure

• Organic solid waste like food

residues, grass, domestic waste

• Processed biomass and wastewater

from agro-industries (e.g. distilleries,

breweries, dairy side products)

• Slaughterhouse waste

• Energy plants such as corn, sugar

cane, grass

• Sewerage sludge and blackwater

from septic tanks

Solid

Waste

Liquid

Waste

Page 22

BIOGAS GENERATION

• Anaerobic digestion is the microbiological breakdown of organic

materials in the absence of oxygen

• Anaerobic digestion works under mesophilic (35-42 °C) as well as

under thermophilic (50-60°C) conditions

• Biogas contains between 50 and 70 % methane, depending on the

input material

• Biogas can be directly used as fuel or further upgraded to bio-methane

with a higher calorific value

• Rule of thumb: energy content of 1 m3 biogas (60 % methane) equals

about 6 kWh or 0,6 liter domestic fuel oil

• Broad range of technologies available!

Page 23

SMALL-SCALE DIGESTERS

• High-tech material for low-tech

applications

• Applicable for small animal farms

and agro-industries

• Modular from 3 m3-100 m3 volume

• Direct use of gas for cooking and

hot-water generation

• Except of the membrane tank, all

materials locally available

Page 24

LARGE SCALE WET-ANAEROBIC DIGESTION

• Animal and liquid wastes

• TS content 3 -15 % TS

• Pond Systems (various providers)

• widely spread in South Amerika

• No mixing required

• Basin Systems (various providers)

• typical for Europe

• Often equiped with agitators or

pumps for mixing

• Retention time: 20-60 days

Page 25

DRY-ANAEROBIC DIGESTION

• Often used for presorted organic

solid waste

• TS content of 28 – 35 % -and does

not require the addition of liquid

• Sizes vary, often modular systems

• GICON (Germany) garage type: no

mixing, low mechanisation

• DRANCO (Germany) system works

with pulper and pump

• Retention time: 28-30 days

Page 26

MANAGEMENT OF DIGESTATE

• High in nutrients: reuse as liquid

fertiliser

• Dewatering/Drying: Secondary

Fuel

• Aerobic Composting: Fertiliser

• Dewatering (if required): Landfill

cover

Page 27

SCENARIOS FOR GRENADA

• Scenario 1

• Dry Digester for organic municipal waste

• Scenario 2

• „All-in-one“ – Organic solid waste and liquid wastes

• Scenario 3

• Effluent Treatment at Clarke‘s Court Distillery

• Scenario 4

• „Agro-Solution“ – Slaughterhouse Mirabeaux, Animal Waste

• Scenario 5

• Decentralised small scale systems for animal farms

Page 28

SCENARIO 1: MUNICIPAL SOLID WASTE

DIGESTION

HYDROPLAN

Assumptions

(2009)

GICON

Assessment

(2014)

Technology

applied

Wet-Thermophilic

System Dry-Wet-Digester

Investment Costs 10,0 Mio USD 10,1 Mio XCD

Electrical energy

content of waste 260 kWhel /t 270 kWhel /t

Organic waste

fraction 35 % 35 %

Total annual

amount of

organic waste to

be treated

14,000 t 20,000 t

Annual electricity

generation 3.640.000 kWhel 5.400.000 kWhel

Sales price for

electricity to the

grid

0.18 USD/ kWhel 0.19 USD/ kWhel

Revenue from

Electricity to the

grid

650,000 USD 1,040,00 USD

• Centralised System

• Low investment costs

• Low energy yield (5.4 GWh)

• Static system

• Production of compost or

secondary fuel

• Investment costs of about 5

Mio. USD

Page 29

SCENARIO 2: „ALL IN ONE“ – CO-DIGESTION OF

WASTE (WET)

Waste Type Total annual amount

(t)

TSS content

(%)

Solid waste + green waste 20000 45

Animal waste (400 pigs + 2000 broilers) 1040 30

Vinasse 6930 2

Slaughterhouse 626 3

Septage (50 %) 17350 10

Sums 45.946

• Mix of various solid and liquid wastes - Wet digestion

• Best energy yield (6.8 GWh/year)

• Transportation is a challenge

• Investment cost of about 8-10 Mio. USD

Page 30

SCENARIO 3: CLARKE´S COURT DISTILLERY

• High energy yield

• Direct reuse as diesel substitute

• Partly solves marine pollution problem

• Investment: Estimate 0,6 Mio USD

Page 31

SCENARIO 4: MIRABEAU SLAUGHTERHOUSE AND

AGRICULTURAL WASTE

• Animal waste from pigs and chicken

• Slaughterhouse waste (and septage

from the northern part of the island)

• Electricity yield: 665 MWh/year

• Heat and electricity directly reused

at facility

• Digestate reuse as fertilizer

• Investment: estimated 0.5 Mio. USD

Page 32

SCENARIO 5: DECENTRALIZED SMALL SCALE

SYSTEMS

• Small-scale farmers (e.g. 10 pigs)

• Direct use of gas as substitute for

LPG in households and agro-

industries

• Water-shed appraoch – to protect

water sources

• 50 small scale farmers in Grenada,

investments costs 75.000-100.000

USD

• Payback 2-3 years

Page 33

SUMMARY OF WASTE TYPES AND ENERGY YIELD

Waste Type Unit Amount CH4 yield

specific

Total CH4 yield Total

Electricity

(kWh)

Total

Electricity

(MWh)

Solid waste+green waste tons 25000 74 1850000

Animal Waste

Pigs animal places 1500 19 28500

Chicken animal places 4000 164 6560

Tot. Slaughterhouse Waste tons 650 140 91000

Vinasse (total) tons 8000 11 88000

Septage m3 34700 4 138800

Wastewater screenings tons n.n.

2.202.860 8.811.440 8.811

Anaerobic digestion is a renewable energy technology (biogas

production) and mitigation technology (landfill gas avoidance) in one

Page 34

EVALUATION OF THE GRENADA CASE Scenario Criteria

Criteria Scores: 1: low,

5 High

Economic feasibility

(investment/ operation

cost, financial

feasibility/ payback

period)

Environmental benefits

(energy yield/climate,

water resources,

pollution control, odor)

Technological

feasibility (complexity,

availability,

maintenance, etc.)

Strategic

attractiveness

(Private Sector

Involvement,

Nexus)

Final

Score/

Ranking

Scenario 1 a:

Municipal Solid Waste

dry digestion

2 3 3 2 Score: 10

Rank: 5

Scenario 1 b:

Solid Waste

Incineration

1 4 1 2 Score: 7

Rank: 6

Scenario 2:

All-in-one Co-Digestion 3 3 3 2

Score: 11

Rank: 4

Scenario 3:

Anaerobic Digestion of

Distillery Effluent

4 4 4 5 Score: 17

Rank: 1

Scenario 4:

Co-digestion of

Slaughterhouse Waste

and Animal Waste

4 4 4 3 Score: 15

Rank: 3

Scenario 5:

Decentralized digestion

on livestock farms

4 4 4 4 Score: 16

Rank: 2

Page 35

CONTRIBUTION TO ENERGY CONSUMPTION

175,8

100

18,0 10,2

5,4 3,1 6,8 3,9 0,3 0,2 0,7 0,4 0,2 0,1

0,0

20,0

40,0

60,0

80,0

100,0

120,0

140,0

160,0

180,0

200,0

GWh/ year %

GRENLEC Diesel (2013)

SW Incineration (HYDROPLAN)

Scenario 1 (SWM Biogas)

Scenario 2 (Biogas all in one)

Scenario 3 (Clarke's Court)

Scenario 4 (Biogas agro waste)

Scenario 5 (decentralised small scale)

Page 36

CLARKE`S COURT DISTILLERY DISTILLERY

• Clarke’s Court discharges about 127034 gal/ month (559 m3/ month) of

highly polluted brine from the rum distillation process. (6707 m3/year)

• Effluent is highly biodegradable (sugars) and thus contains a significant

energy content.

• Temperature: approx. 70 °C

• BOD: 40000-50000 mg/l

• COD: 60000-80000 mg/l

• TSS: 12000-14000 mg/l

• Effluent causes massive odor development for downstream settlements

• Visible and measurable marine pollution problems in nearby mangroves

at woburn bay.

• Adverse effects on planned tourism projects in Woburn Bay

Page 37

CLARKE`S COURT DISTILLERY

• A biogas plant is wastewater treatment as well as a source of thermal energy

generation for the distillation process.

• Biogas is used as supplement fuel for diesel boiler operation (steam

production). It can replace costly diesel (5 USD/gal).

(Expected biogas output can vary depending on organic content – tests required)

• Conservative calculation for savings:

• 77 000 Nm3CH4/year (11 Nm3/tFM)

• Diesel equivalent: 84 700 liter Diesel/ year (approx. 18615 gal Diesel/

year)

• Savings: 5 USD/gal x 18 615 gal/year = 94,000 USD)

• Optimistic, but reality based calculation (based on other distillery):

• Diesel equivalent: 35 400 gal Diesel/year

• Savings: 5 USD/gal x 35 400 gal/year = 177,000 USD)

Page 38

REQUIRED INVESTMENTS

• Studies

• Baseline study (preliminary study and assessment available)

• Technical design study / bill of quantity/ tender&procuremement

documents

• Equipment

• Biogas plant (either pond system or reactor system with agitator)

• Dewatering unit for biogas

• Adjustment/Upgrade of boiler burner to allow the combustion of biogas

• Optional: Aerobic trickling filter for post treatment of effluent (requires

detailed studies)

Page 39

POND DIGESTER

• Pond covered with gas tight membrane

• Membrane is biogas storage

• Lower investment costs

• Low operation cost

Page 40

REQUIRED INVESTMENTS

• Auxiliary Works

• Basic civil works for installation of digester and auxiliaries

• Rehabilitation/Adjustment of existing storage tank and burner

• Cost SUMMARY (still needs verification)

Estimated required investments US$

Baseline study 10.000

Design study and Bill of Quantity 25.000

Equipment (biogas plant) 500.000

Equipment (auxiliary devices) 120.000

Total 655.000

Page 41

DPP FINANCING CONCEPT • Annual O&M Cost: 3 % of investment, considering the current fuel prices,

pay-back of an investment is expected within 7 years

• A GIZ supported project (Development Partnership with the Private Sector

– DPP, or Water Stewardship Project) could support a set up of new

energy contracting approach for distilleries and provides know-how for

operation of system

• Upfront investment by a consortium could be refinanced by energy savings

• Costs could be divided as follows:

• GIZ: up to 25 %, Private Partners: up to

• Clarke’s Court distillery signs a refinancing contract with a DPP

investor consortium (e.g. Clarke’s Court, Clarke’s Court Marina,

Technology Provider), achieved energy savings are used as pay-back

to investor consortium

Page 42

DPP Management Concept

DPP Contract

Energy Saving

Contract

• Technical design and

baseline study

• Support establishment of

consortium

• Support contract

development&monitoring

• Support part of procurement

and installation of biodigester

• Operation of system by

technology provider in

cooperation with Clarke’s

Court distillery

• Training and Maintenance

• Monitoring of biogas

generation and diesel

replacement

• Ensuring reliability for

contract period

Page 43

• Presentation of concept to Clarke’s Court Management → Commitment/ Financial

Contribution

• Set-Up of Consortium Partners (potential: Clarke’s Court, Clarke’s Court Marina

Investors, Technology Provider

• Potentially: Search for additional (commercial) investors, soft loans,….

• GIZ supports contract development (studies, contract documents) and will also have a

minor share in the investment costs

• Clarke’s Court and consortium approve concept and project – go into contract

negotiation

NEXT STEPS

Proceeding simultaneously

DPP Contract between

GIZ and private

companies signed

MoA between Private

Investors, GIZ and

Technology Provider

companies signed

(roles, responsibilities,

etc.)

Energy Contracting

contract to be signed

between Private

Investors and

Technology Provider

Page 44

Technology

Provider x % of Investment

Technology

Training

Private

Investors (e.g.

CCD/ CCM) y % Investment

Land

GIZ (DPP) Supports contract

development and

tender process,

logistics

z % of Investment

Investment:

Anaerobic Digestion + Sandfilter

Solar Pre-Heating System for Boiler

Systems operation by Technology Provider

Energy

Savings

Energy savings used to pay back

upfront investment

PH

AS

E 1

of

En

erg

y S

avin

g C

on

tract

Page 45

Technology

Provider

Maintenance

contract ??

Private

Investors Operation &

Maintenance (?)

Investment:

Anaerobic Digestion + Sandfilter

Solar Pre-Heating System for Boiler

Systems operation by ??

Energy

Savings After payback all energy savings

remain at Clarke‘s Court (and other

investors?)

Pays Technology Provider for

Maintenance/ Services

PH

AS

E 2

of

En

erg

y S

av

ing

Co

ntr

ac

t

Page 46

CONCLUSIONS FOR THE GRENADA CASE AND IN

GENERAL FOR THE CARIBBEAN

• Biogas can cover a fraction of the energy demand (in Grenada:

max: 6-8 % of total demand)

• Anaerobic digestion is lower in investment costs and less complex with

regard to O&M

• Under current framework: small-scale system with a direct reuse

potential of the gas are preferable (distilleries, slaughterhouses)

• Solid waste could be co-digested with other wastes in order to increase

the gas potential

• Large-scale systems are attractive even for BOT contracts, if a higher

feed-in tariff for electricity can be negotiated

• Digestate has a high reuse potential (compost or secondary fuel)

• Production of energy plants for anaerobic digestion - new market?

Page 47

CONFERENCE ON WASTE MANAGEMENT IN THE

CARIBBEAN, NOVEMBER 17-20, 2015 IN GRENEDA:

Toward the Development of Caribbean Regional

Organic Waste Management Sector

The workshop will be organized in partnership with:

• CARICOM Secretariat;

• Gesellschaft für Internationale Zusammenarbeit (GIZ-REETA

Program);

• Caribbean Community Climate Change Centre (CCCCC) and SIDS

DOCK;

• Caribbean Development Bank (CDB);

• United Nations Industrial Development Organization (UNIDO);

• Swedish Energy Agency (SEA);

• World Intellectual Property Organization (WIPO);

• Clinton Foundation Climate Initiative (CCI).

Thank you for your attention!