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April 6, 2026

Arizona Public Service (APS)

Cold Forces NW to Dip More Deeply into EIM as Avista Joins
Pacific Northwest members reaped an unusually large chunk of the Western EIM's benefits in the first quarter, leaning on it to keep up with demand.
NERC Conference Ponders the Human Element to Reliability
NERC offered lessons from firefighters, psychologists and the airline industry at its eighth annual Human Performance Conference.
© RTO Insider
Western States to Tackle Wildfires, Renewables, EIM Told
California legislators will struggle with wildfire liability, while lawmakers in Washington and Nevada could debate clean energy.
Pinnacle West Lauds Ariz. Vote in Q3 Earnings Call
Pinnacle West Capital is poised to move forward with its own clean energy plans after Arizona voters rejected Proposition 127.
Western EIM Reports Record Benefits
CAISO said Monday its Western Energy Imbalance Market has produced more than a half-billion dollars in benefits for participants since its founding five years ago, including more than $100 million in benefits in the third quarter of 2018.
CAISO
EIM Benefits Surge to $71.2M in Q2
The Western Energy Imbalance Market saw financial benefits soar to a record $71.2 million in the second quarter, according to a CAISO report.
CAISO
CAISO, PacifiCorp Gain Most EIM Q1 Benefits
CAISO and PacifiCorp reaped the majority of the Western Energy Imbalance Market’s $42.1 million in gross benefits during the first quarter (Q1 2018).
FERC Affirms WestConnect Cost Allocation Ruling
FERC upheld a previous ruling covering Order 1000 cost allocation in the WestConnect planning region, adding further explanation of its reasoning.
Pinnacle West Capital Profit Rises on Customer Growth
Pinnacle West Capital, parent of APS, earned $276 million ($2.46/share) in the third quarter, compared with $263 million during the same period in 2016.
CAISO Leads EIM Q2 Benefits, Exports
CAISO hauled in the largest share of the $39.52 million in benefits produced by the EIM during the second quarter.

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