A key factor in the CAISO EDAM advantage is the benefits the utility would lose by leaving the Western Energy Imbalance Market, a Brattle Group consultant said.

The Bonneville Power Administration released a much anticipated staff report that tentatively recommends the agency choose SPP’s Markets+ over CAISO’s Extended Day-Ahead Market.

SPP filed its Markets+ tariff at FERC, the culmination of more than a year-long collaborative effort with potential participants and stakeholders to draft rules and protocols for the grid operator’s day-ahead market offering.

SPP’s Board of Directors and its members have approved the initial tariff for its Markets+ service offering in the Western Interconnection, clearing the way for its filing at FERC.  

CAISO scored simultaneous victories in heavily contested territory after Portland General Electric and Idaho Power both signaled their intent to join the Extended Day-Ahead Market.

The Colorado Public Utilities Commission has proposed rules that would govern how it will review applications from utilities wishing to join the various regional markets being developed in the Western Interconnection.

The 80-page report represents the latest volley in an ongoing skirmish among Western electricity sector stakeholders over what exactly occurred on the regional grid during the Jan. 12-16 deep freeze.