Sam Mannan Project Manager Los Angeles Dept. of Water and Power (LADWP)

BOULDER CANYON PUMPED STORAGE PROJECT

Agenda

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Background

Why Energy Storage?

Duck Curve and Renewables

LADWP’s Experience in Pumped Hydro - CASTAIC

LADWP and Hoover

The “Boulder Canyon Pumped Storage” Project

Ongoing Assessments

Key Challenges

Conceptual Timeline

LADWP Overview • Largest municipal utility in the USA • 1.5 Million power customers & 680,00 water customers • Owns more than 25% of state’s transmission lines • Reached 20% renewables in 2010; well-positioned to meet state-mandated level of

33% by 2020

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Utility Description • LADWP is a vertically integrated utility:

– LADWP owns and operates its own generation, transmission, and distribution system

– Glendale and Burbank are within LADWP’s Balancing Authority Area

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State Mandates Regulation Description SB100 - Achieve the 50% by December 31, 2026

- Achieve a 60% target by December 31, 2030 - Policy that eligible renewable energy and zero-carbon resources supply 100% by

December 31, 2045.

Once Through Cooling (OTC) - Assess the extent to which scheduled OTC units are vital to maintain system reliability and resource adequacy

- Determine viable alternative solutions to repower OTC units without sacrificing system reliability, and perform cost-benefit analysis for each alternative

SB1339 - Requires publicly owned utilities to develop a standard interconnection process and tariffs, as necessary, within 180 days of a request from a customer or developer

- Microgrids may include energy storage, forecasting, demand response, etc. Any resource that meets California Air Resource Board (CARB) standards

AB2514 - Requires LADWP to set its ESS procurement targets if it is viable and cost effective - First target date - December 31, 2016 - Second target date - December 31, 2021

SB32 - CARB shall ensure that the Statewide Green House Gas (GHG) emissions are reduced to at least 40% below 1990 levels by 2030

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Background • Clean energy policy goals along with legislative efforts to

decarbonize power resource supplies are generating significant amounts of excess solar and wind energy for utilities throughout the Southwest

• While LADWP has deployed batteries as one of several energy storage options, hydro-based Pumped Storage is a proven technology that can be cost effective and potentially less environmentally impactful

• To date, LADWP has installed 22.6 MW of new energy storage and is currently evaluating a wide range of energy storage options including pumped storage

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Energy Storage Technologies

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Types of Energy Storage

Thermal

Chillers, Ice

Hot Water Heaters

Gravity

Pumped Storage

Train Rail

Mechanical-Kinetic

Flywheels

Compressed Air

Chemical

Lithium Polymer Batteries

Lithium Ion Batteries

Sodium Sulfide Batteries

Flow Batteries

#1

#4

#2

#3

‘Duck Curve’ Ramping Challenge

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Renewable Curtailment in California

9 Note: LADWP is not having this challenge today.

Castaic Power Plant – 1250 MW

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- Castaic is sited on west branch of California State Aqueduct - The Project is a cooperative venture between LADWP and the California Department of Water Resources (DWR) - Castaic follows LADWP system load and provides for spinning reserve requirements

Castaic Pumped Storage Plant

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Castaic Lake - Storage reservoir

Elderberry Lake - Tailbay

Six 271 MW reversible pump-turbines

One 55 MW Pelton unit for pump starting and load following

30 ft. diameter power tunnel 7.3 miles long

Pyramid Lake - Upper reservoir

LADWP and Hoover • Since 1937, LADWP is an original participation of the Hoover Dam. LADWP

also operated the plant.

• Currently LADWP is committed to participate through 2067.

• Hoover is accounted for both electric “generation and capacity” in LADWP’s energy portfolio.

• LADWP, together with the other Hoover Contractors, continues to participate in the Lower Colorado River Multi-Species Conservation Program.

• Hoover provides base load, carbon neutral, hydro electric energy at a very competitive rate.

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Hoover Hydro Electric Power Plant

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Boulder Canyon Pumped Storage

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CONCEPTUAL

Boulder Canyon Pumped Storage

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CONCEPTUAL

Proposed Routes

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Proposed Routes

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Recap - Meetings Held to Date

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Bureau of Reclamation – Lower Colorado • Dr. Terry Fulp, Regional Director • Jacklynn Gould, Deputy Regional Director • Len Schilling, Area Manager • Theresa Saumier, Manager, Facilities Services • Daniel Bunk, Boulder Canyon Operations

Office (Water Operations) • Marc Maynard, Resource Management Office

(Land and Environmental) • Mike Bernardo, Region Director Special Assistant National Park Service • Lizette Richardson, Superintendent • Mike Boyles, Lands, Planning, and Compliance

Specialist

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U.S. Dept. of the Interior • David Hayes, Former Deputy

Secretary • Michael Connor, Former Deputy Secretary Colorado River Board • Christopher Harris, Exec. Director

Arizona Power Authority • Ed Gerak, Exec. Dir. • John Underhill, Interim Deputy

Director • Linda Sullivan, Sr Rate Analyst Colorado River Commission • Jayne Harkins, Exec. Dir. • Douglas Beatty, Chief Finance

and Administration • Christine Guerci, Special

Council

Southern California Public Power Authority (SCPPA): • Michael Webster, Exec. Dir.

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• Southern Nevada Water Authority Colby Pellegrino (Colorado River Program Manager) Greg Walch (General Counsel)

• Las Vegas Valley Water District John Entsminger (GM) Dave Johnson (DGM) • WAPA Jack Murray, Vice President of Power Marketing • Boulder Canyon Coordinating Committee • Metropolitan Water District of Southern California Jon Lambeck, Manager of Power Operations and Planning Ann Finley, Principal Engineer • Metropolitan Water District of Southern California Jon Lambeck, Manager of Power Operations and Planning Ann Finley, Principal Engineer

Conceptual Proposal Criteria’s

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Location - TO and FROM

Leveraging Hoover Dam to Increase Capacity Factor

Hydraulic Model Assessment

Production Model - Initial Cost

New Partnership • The project requires “new partnership” for successful implementation • There will be consequences, but we want them to be good consequences.

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LADWP Internal Groups Collaboration

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Project Team

City Attorney Office

Financial Services

Environmental

System Planning

Mechanical Engineering

Civil Engineering

Structural Engineering

AC/DC Substation

Design

External Generation

Real Estate

Right-Of-Way

Laboratory and Test Lab

LADWP – New Group of Six Engineers

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Sam Mannan (Project Manager)

Omar Torres Manuel Walker Vanessa Gonzalez Eric Escamilla Environmental City Attorney

Consultants (TBD)

LADWP Management Senior AGM/COO/Director

Joe Avila (Staff to GM)

Ongoing Tasks

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Hydraulic Studies:

Head Loss Calculations Water Allowances Effects to Downstream Water Supply Water Schedule – Impact and Integration Pump Sizing Operational Characteristics

Ongoing Tasks

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Engineering Assessment:

System Impact Study Short Circuit calculations Facilities Study Piping Vs. Tunneling Major Equipment /Ratings Transmission Accessibility Substation Location Pump Sizing / Locations Electrical Integration System Impact

Major Challenges

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Environmental Forest Services Recreational

Activities Local Businesses

Federal/State Approval

MSCP (Multi-Species Conservation

Program) Water Rights

Hydraulic No Adverse Water

Affects Partnerships

RPS Renewable Accountability Right-of-Way MW vs Cost

Payback

Conceptual Timeline

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2018-2022

2022-2024

2024- 2028

2029

2030

Outreach/planning/feasibility/engineering/financial

Construction

Environmental Impact Study & Reports

Testing

Commissioning