The expanded western EIM provided California a new outlet for surplus renewables, according to CAISO.

Idaho Power signed an agreement with CAISO to become the sixth utility to join the western Energy Imbalance Market.

NV Energy had a smooth integration into the Western Energy Imbalance Market (EIM), CAISO said.

CAISO told FERC that its software’s inability to recognize available balancing capacity was creating false scarcity in the market.

FERC's proposed rule would require RTOs and ISOs to register market participants through common alpha-numeric identifiers.

The California ISO’s expansion of its energy imbalance market to six other states have some asking the question: Is this the beginning of an RTO West?