Western Energy Imbalance Market (WEIM)

California ISO announces agreement with Black Hills Corp. subsidiaries for future participation in Western Energy Imbalance Market

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BHE Montana to join California ISO’s Extended Day-Ahead Market

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$365.04 million savings in Q2 2024

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Total$5.85 billion gross benefits since Nov 2014 (millions $)
Arizona Public Service
4.57
Avangrid
8.56
Avista Utilities
2.95
BANC
49.90
BPA
4.72
California ISO
36.02
EPE
3.09
Idaho Power
15.57
LADWP
30.52
NV Energy
33.65
NorthWestern Energy
7.88
PacifiCorp
27.35
Portland General Electric
11.25
Powerex
18.73
PNM
11.21
Puget Sound Energy
8.26
Salt River Project
20.93
Seattle City Light
4.87
Tacoma Power
5.44
TEP
8.02
TID
0.98
WALC
50.57
​

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