Investor Presentaiton
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Energy Imbalance Market
Benefits Customers and the Environment
The energy imbalance market is an innovative market that allows utilities across the West to access the lowest-cost
energy available in near real-time, making it easy for zero-fuel-cost renewable energy to go where it is needed and
reduce carbon emissions. Through September 2021, cumulative benefits totaled approximately $1.7 billion
PacifiCorp and the California ISO launched the EIM in November 2014. NV Energy joined in December 2015. Berkshire
Hathaway Energy's cumulative customer benefits total $504 million
Puget Sound
Energy
Seattle
City Light
Powerex
-
November 2014 September 2021
Combined Benefits
Balancing Area Authority
Year Joined Total ($ millions)
Tacoma-
Power
Portland
General
Bonneville
Electric
Power
Administration
Avista
NorthWestern
Energy
Idaho
Power
PacifiCorp
BANC
NV
Energy
PacifiCorp
Turlock
Irrigation
District
California
ISO
Los Angeles
Dept. of
Water & Power
WAPA Desert
Southwest
Arizona Public
Service
Salt River
Project
Tucson
Electric
Power
Map boundaries are approximate and for illustrative purposes only.
CAISO
2014
$344.4
PacifiCorp
2014
$351.6
NV Energy
2015
$152.0
Arizona Public Service
2016
$238.1
Puget Sound Energy
2016
$70.2
Market Operator
California ISO
EIM entity
Active participant
Planned EIM entry 2022
Planned EIM entry 2023
Portland General Electric
2017
$128.4
Idaho Power
2018
$126.9
Powerex
2018
$26.9
BANC/SMUD
2019
$144.4
Salt River Project
2020
$72.0
Seattle City Light
2020
$15.9
Public Service
Company of
New Mexico
LADWP
2021
$32.1
Northwestern Energy
2021
$6.2
Public Service Co of New Mexico
2021
$9.1
El Paso
Electric
Turlock Irrigation District
2021
$3.5
Copyright 2021 California ISO
Total
$1,721.8
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