FERC upheld a previous ruling covering Order 1000 cost allocation in the WestConnect planning region, adding further explanation of its reasoning.

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 hauled in the largest share of the $39.52 million in benefits produced by the EIM during the second quarter.

Salt River Project signed an agreement with CAISO that puts the utility on track to join with the Western Energy Imbalance Market (EIM) in April 2020.

Arizona Public Service expects to meet its future energy needs through increased use of natural gas and solar, while reducing coal reliance.

The unpredictability of cloud cover, which can cause sharp and sudden drops in solar production, creates a challenge for load forecasting in the EIM.

Members of the Energy Imbalance Market (EIM) saw increased savings and profits with the addition of Puget Sound Energy and APS.

Arizona Public Service (APS) can continue to charge market-based rates in Tucson Electric Power’s balancing authority area, FERC ruled.

FERC accepted transmission calculations submitted by Southwestern transmission-owning utilities in support of their requests for market-based rates.

The Energy Imbalance Market (EIM) experienced a “dramatic uptick” in failed ramping capacity tests in November and December, the CAISO IMM reported.