CAISO/WEIM

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By Jason Fordney Frequent rule changes and an uncertain market structure are causing dissatisfaction among CAISO demand response providers and eroding participation in the programs, those providers say. Problems with data verification and settlement required the ISO to recalculate its 2016 DR results, and providers say there are other issues...

By Jason Fordney CAISO said it will kick off an initiative to refine its generation interconnection process later this year as part of an ongoing effort to accommodate renewables and keep its rules updated. The grid operator is in the beginning stages of its Interconnection Process Enhancements 2018 program but...

By Jason Fordney FERC staff have accepted CAISO’s implementation agreement for Canadian energy marketer Powerex to join the Western Energy Imbalance Market (EIM) but cautioned that the arrangement could be subject to further scrutiny once the commission meets after restoring its quorum. “Preliminary analysis indicates that CAISO’s proposed implementation agreement...

By Jason Fordney SACRAMENTO, Calif. — While CAISO has in recent years made strides in incorporating demand response into its wholesale market, it was forced to recalculate its 2016 DR settlements because of missing performance data, the grid operator said Tuesday. ISO representatives, DR companies, utilities and others industry participants...

By Jason Fordney CAISO has dropped a proposal that would have allowed third-party transmission providers to participate in the Western Energy Imbalance Market (EIM) after getting negative feedback on the plan — but also said it might revisit the idea in the future. The grid operator proposed that transmission owners...

By Jason Fordney FOLSOM, Calif. — CAISO is refining market rule changes to more accurately reflect suppliers’ costs of producing and dispatching electricity while also increasing their bidding flexibility. Stakeholders attending an Aug. 3 workshop learned more about recent proposed changes to bidding rules in the ISO’s Commitment Cost and...

By Jason Fordney CAISO is developing new tools to deal with the variable output from the increasing amount of renewable and non-dispatchable generation on its grid, an effort that could bring fundamental changes to California’s resource adequacy rules. The tools are meant to deal with the highly variable output of new...

By Robert Mullin CAISO is nailing down its final preparations for the Aug. 21 solar eclipse, which is expected to take about 5,600 MW of utility-scale and rooftop solar generation off the California grid during morning hours when those resources would typically be ramping up output. Still, the grid operator...

By Jason Fordney Negative day-ahead prices surged in CAISO during the first quarter as combined surpluses of solar and hydroelectric output frequently left the market upside-down. Prices went negative during 51 hours in the day-ahead market over the three-month period, compared with just three hours in all of last year,...

By Robert Mullin CAISO hauled in the largest share of the $39.52 million in benefits produced by the Western Energy Imbalance Market (EIM) during the second quarter, the grid operator said in a report released Monday. The ISO was also the market’s dominant exporter of energy over the period as...