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polar vortex


Gas Now Tops Coal in PJM, but Nuclear Still No. 1

A report from an independent market monitor for PJM Interconnection shows that natural gas-fired power generation topped coal-fired output in PJM in 2018, the first time that gas has topped…


Polar Vortex Tests Resiliency of U.S. Power System 

Brutally cold temperatures in the midwestern and northeastern U.S. spurred grid operator alerts as natural gas demand has surged, power prices have soared, and there have been forced generator outages. …


ISOs, RTOs Outline Winterization Efforts

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…


NERC’s Polar Vortex Review Bares Natural Gas Dependency, Equipment Vulnerabilities

Despite record low temperatures and widespread generation outages during the polar vortex, bulk power system reliability was maintained, says the North American Electric Reliability Corp. (NERC) in a newly released…


THE BIG PICTURE [INFOGRAPHIC]: A Generation Freeze

Before the polar vortex earlier this year, several severe cold weather events had presented comparable power generation operational challenges. POWER ranks those events here in terms of loss of generation…