By Michael J. Gergen, Jared W. Johnson, and David E. Pettit
On June 19, 2014, the Federal Energy Regulatory Commission (“FERC” or “Commission”) conditionally accepted revisions to the California Independent System Operator Corporation’s (“CAISO”) FERC Electric Tariff to implement the CAISO’s proposed Energy Imbalance Market (“EIM”) that will allow neighboring balancing area authorities (“BAAs”) in the western states to participate in the imbalance energy portion of the CAISO’s real-time market. Energy imbalance services have long been required as an “ancillary service” under FERC’s open access regulations and pro forma open access transmission tariff (“OATT”). In its proposal, the CAISO noted that the EIM was effectively an expansion of its existing real-time energy market allowing to take part in the EIM alongside entities already transacting within the CAISO. PacifiCorp’s two BAAs will be the first to participate in the EIM, and in a concurrent order, FERC also conditionally accepted in large part corresponding revisions to PacifiCorp’s OATT. NV Energy has also entered into an implementation agreement with the CAISO to join the EIM. Although several market participants protested various aspects of the CAISO’s proposed design of the EIM, most of it was approved by FERC. The CAISO plans to start the new EIM on October 1, 2014.