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By Robert Mullin FERC on Wednesday accepted transmission calculations submitted by Southwestern transmission-owning utilities in support of their requests for market-based rates in their balancing areas. But the commission’s approval of the simultaneous import limit (SIL) values provided by the Arizona and New Mexico utilities was accompanied by pointed advice...

By Robert Mullin A new, “expedited” CAISO initiative seeks to establish a process for selecting and procuring black start resources, needed to restore segments of California’s transmission system in the event of regional outages. The effort will follow an ambitious timeline: The ISO hopes to present a plan to its...

By Robert Mullin Two energy sellers that engaged in market manipulation during the Western Energy Crisis of 2000/01 will be prohibited from using the costs associated with illegal trading activity to offset the amount of money they’re expected to refund back to California, FERC has ruled. The commission will also...

By Robert Mullin FERC on Thursday approved CAISO’s agreements to procure frequency response from the Bonneville Power Administration (ER17-408) and Seattle City Light (ER17-411). The contracts are intended to help the ISO comply with NERC reliability standard BAL-003-1, which requires each balancing authority area to carry sufficient capability to respond...

By Robert Mullin The Western Energy Imbalance Market (EIM) experienced a “dramatic uptick” in failed ramping sufficiency tests in November and December, CAISO’s internal Market Monitor reported Wednesday. | © RTO Insider New EIM participant Arizona Public Service was especially prone to failures during the fourth quarter of last year,...

By Robert Mullin CAISO’s decision to consider reforms to its congestion revenue rights auctions as one of its top priorities for 2017 has provoked mixed reactions from stakeholders. Opponents of the move say the ISO’s pursuit of the CRR issue lacks widespread stakeholder support and therefore doesn’t warrant a top...

By Robert Mullin The Western Area Power Administration has selected a route for the TransWest Express transmission project, a proposed 730-mile, extra-high-voltage DC line designed to deliver large volumes of renewable energy into the desert Southwest. The announcement comes a month after the U.S. Interior Department’s approval of the project...

By Robert Mullin Solar photovoltaic resources can provide ancillary services in a way comparable to — or better than — conventional generating resources, according to a study released by CAISO last week. That finding was based on testing conducted last August in collaboration with the National Renewable Energy Laboratory (NREL),...

By Robert Mullin FERC has affirmed a previous ruling stating that evidence of price reporting deficiencies by power sellers during the Western Energy Crisis of 2000-2001 cannot constitute the sole basis for a finding of market manipulation during the event. The commission’s Jan. 9 order clarified a key element of...

By Robert Mullin The Western Area Power Administration and Sacramento Municipal Utility District (SMUD) have extended the scoping period for a proposed transmission line intended to increase SMUD’s ability to import power from the Pacific Northwest and export from the Sacramento area. The scoping period for the Colusa-Sutter (CoSu) line...