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Three 55-MW oil-fired units at Dynegy’s Oakland plant in renewables-heavy California will be needed through 2018 to ensure reliability in a region served by the California Independent System Operator (CAISO), the grid entity has deemed. CAISO’s board of governors on September 19 extended a “reliability must-run” (RMR) contract for the three Oakland units. An RMR […]

California’s excess of solar power challenges the statewide independent system operator’s ability to balance its system without curtailing low-carbon supplies and ramping up natural gas generation. It’s

The U.S. market for electricity is trifurcated. More than half the country is served by competitive generators bidding against each other in wholesale markets. Almost half is served by conventional state-regulated, vertically integrated utilities controlling generation and transmission. The rest, a much smaller portion, consists of government-owned and customer-owned utilities, some of which are generators […]

The owner of a merchant 1,022-MW combined cycle natural gas–fired power plant in California has filed for bankruptcy protection, citing regulatory policies and market forces that have depressed revenues. La Paloma Generating Co. on December 6 filed for U.S. Chapter 11 bankruptcy, blaming a debt of $524 million that it racked up even though its four-unit […]

Panelists debating the pros and cons of a regionalized western power grid seemed to agree that the development of such a system is inevitable, but they disagreed on how fast the evolution should occur. The panel discussion took place during the California Independent System Operator (ISO) Stakeholder Symposium held on September 7 in Sacramento. At […]

In a joint report issued April 5, a group of California agencies and utilities said that if the Aliso Canyon natural gas storage facility north of Los Angeles cannot be returned to service after a major leak this past winter, repeated gas curtailments could occur this summer, leading to significant loss of generating capacity in Southern […]

Calpine Corp. will idle a 578-MW natural gas–fired combined cycle (CCGT) power plant in northern California for likely the remainder of the year. The Houston-headquartered company told POWER on January 15 that it will put the 2001-built Sutter Energy Center in Yuba City in “cold layup.” That means that while will the plant will not […]

Integrating California Independent System Operator’s (CAISO’s) and PacifiCorp’s networks—the two largest high-voltage transmission grids in the West—could yield billions of dollars in shared cost reductions within the first 20 years alone through efficiencies, a new study says.  The report commissioned by PacifiCorp stems from a memorandum of understanding signed by the independent system operator (ISO) […]

In presentations to the Federal Energy Regulatory Commission (FERC), the nation’s regional transmission organizations (RTOs) and independent system operators (ISOs) on Sept. 17 outlined measures they are taking to prevent issues if faced with extreme weather this winter.  The measures are to prevent widespread generation outages as occurred during the Jan. 6–7, 2014, polar vortex. […]

No one can accuse the officials who oversee California’s energy market of lacking ambition. Fresh on the heels of Gov. Jerry Brown’s January promise to raise the state’s renewable generation target from 33% in 2020 to 50% in 2030, the California Independent System Operator (CAISO) in April announced that it and Oregon utility and Berkshire […]