capacity performance

Two nuclear plants owned by Exelon Corp. in Illinois and Pennsylvania failed to clear PJM Interconnection’s latest annual capacity auction, putting one of those financially crippled units at risk of early retirement. Meanwhile, procurements for solar, wind, and demand response fell dramatically compared to last year, and drastic price declines could roil the market for […]

The “polar vortex” storm of January 2014 blew in big changes to PJM Interconnection’s operations. But these changes are now the subject of a lawsuit filed by environmental groups, alleging they discriminate against clean energy sources. The sub-zero temperatures froze coal piles and gearboxes. Natural gas plants, lacking firm contracts for fuel delivery, were unable […]

The nation’s nuclear fleet has performed impressively through the first eight months of 2015. Plant outages averaged less than 3% of total U.S. nuclear capacity during the all-important peak summer season this year—from June through August. The result is far better than even the lowest range of data from any of the past five years. […]

The effects of the January 2014 polar vortex have led to big changes in the PJM capacity market, as the board has approved changes to tighten up operations and improve reliability. The polar vortex storm of Jan. 6–8, 2014, saw temperatures plunge across the Midwest and Mid-Atlantic, causing a spike in demand for electricity and […]