ERCOT

California and Texas—two regions where summer reliability concerns were forecast earlier this year—are suffering extreme temperatures and are scrambling to relieve stress on the grid. The California Independent System Operator (CAISO)—the grid operator that serves about 80% of California—on July 24 and 25 issued statewide Flex Alerts, calling for voluntary electricity conservation during peak afternoon […]

Electricity is produced by a variety of generating units, each with different lead times and costs to be readied for service, and production costs once brought online. Because electricity is a commodity that

Higher-than-average temperatures forecast for much of the U.S. this summer won’t affect reliability in most regions, though concerns remain for Texas and Southern California, according to the Federal Energy Regulatory Commission (FERC). Presenting the “Summer 2018 Energy Market and Reliability Assessment,” on May 17,  FERC staff said that most entities that are part of the […]

The Electric Reliability Council of Texas (ERCOT) on April 30 updated its summer 2018 planning reserve margin to 11% based on resource updates, but it warned that the regional grid serving most of Texas could still suffer rotating outages under extreme conditions. In its final Seasonal Assessment of Resource Adequacy (SARA) report for the upcoming […]

To remain competitive in power markets increasingly characterized by disruptions, NRG Energy plans to accelerate its transition from a pure independent power producer (IPP) model to a more simplified customer-driven integrated power model that favors its retail businesses. In a number of presentations showcased on March 27 as part of NRG’s 2018 Analyst Day, company […]

The recent retirement of older generating units and high peak usage owing to economic growth could tighten operating reserves in the region served by the Electric Reliability Council of Texas (ERCOT) this summer. The grid operator said on March 1 that total resource capacity for the upcoming summer (spanning June through September 2018) is expected […]

An analysis by the University of Texas at Austin’s Energy Institute shows wind power generation capacity in Texas may already have surpassed coal-fired capacity in the state, and wind almost certainly will have leapfrogged coal by early next year, as wind farms continue to dot the landscape while more coal plants in the state are […]

Vistra Energy moved to halt a financial hemorrhage stemming from unprofitable conditions in the Electric Reliability Council of Texas (ERCOT), announcing plans to shutter two more coal-fired power plants—the 1.1-GW Sandow Power Plant (which includes a 2009-built unit) and the 1.2-GW Big Brown plant—in early 2018. The company’s decision made public on October 13 comes on […]

A week after the Department of Energy (DOE) proposed a rule to bolster uneconomic coal and nuclear generators in competitive power markets, Luminant announced that an “unprecedented low power price environment” will force it to retire a 1.9-GW coal-fired power plant operating in the Texas market. The plant’s economic woes suggest a larger swath of […]

Harvey—a massive weather system, which has so far killed 38 people, displaced thousands of others, and caused widespread flooding in Texas—downed 7.6-GW of generation resource capacity, along with two major 345-kV transmission lines and 85 other high-voltage transmission lines serving the Gulf Coast. As of 1 p.m. on August 30—about four days and 18 hours […]