The entry of Arizona Public Service and Puget Sound Energy into the Western Energy Imbalance Market went off without a hitch, according to CAISO.

Western energy execs discussed the growth of the EIM, a Western RTO, “Caliphopia” and how the Western Interconnection is likely to change.

CAISO last week released the third draft of a proposal outlining the principles intended to underpin the governing framework for a Western RTO.

Environmental group Western Resource Advocates was an early proponent of CAISO’s Energy Imbalance Market and is actively supporting the ISO’s effort to transform itself into an RTO serving the broader West.

FERC accepted Pacific Gas & Electric’s (NYSE:PCG) filing for a proposed rate increase under the utility’s transmission owner tariff, but suspended implementation of the increase for five months.

CAISO expects to hold its 2017 revenue requirement to this year’s level despite a planned $4.3 million increase in spending driven by rising labor costs.

Arizona Public Service and Puget Sound Energy began transacting in the Western Energy Imbalance Market (EIM) on Oct. 1, bringing the region’s only real-time market up to five members.

Transmission industry owners, operators, generators, regulators, financiers and other key players from the Western U.S. attended Infocast’s 8th annual Transmission Summit West.

FERC approved the CAISO plan to for a new market mechanism for itself and the Western EIM designed to integration of variable renewable energy resources.

FERC rejected for a second time proposed rules by Arizona Public Service on external resources can use dynamic scheduling to participate in the EIM.