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 upcoming April 8 solar eclipse will run a course from central Mexico to Newfoundland, but grid operators far from its path of totality will be dealing with its impact.

FERC approved a proposal to allow transmission lines outside California to join CAISO under a new subscriber-funded model that avoids allocating project costs to the ISO’s load-serving entities.

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.

CAISO's Department of Market Monitoring found that limits on WEIM imports last year led to increased transmission congestion in the ISO's markets.

FERC issued an order partly approving rule changes CAISO filed to its tariff that are meant to enable its participation in the Extended Day Ahead Market once it goes live.

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.