Louisiana regulators are questioning why MISO issued instructions for conservative operations in its South region during an extreme cold snap.

Another wave of arctic cold in the South has ERCOT and SPP revising their winter peak records.

While the high load and generation outages followed the pattern of the polar vortex, MISO managed to keep prices stable and maintain better reliability.

Grid operators turned to coal- and oil-fired generation as Arctic air sent temperatures plunging to record lows from the Great Plains to the Deep South.

FERC has allowed MISO to waive its $1,000/MWh offer cap for the fourth straight winter in response to the extremely cold weather.

The three grid operators serving the East Coast, ISO-NE, NYISO and PJM Interconnection, have so far weathered the extended cold snap gripping the region.

Power prices surged along with demand across much of the U.S. as a blast of Arctic air sent temperatures plunging to record lows.

There was no shortage of superlatives as Texas utility executives briefed ERCOT on the impact of Hurricane Harvey and their recovery from it.

MISO officials said a temperature forecast short by just 3 degrees Fahrenheit triggered a maximum generation event Sept. 22.

ERCOT’s Houston Hub saw real-time natural gas prices spike as high as $1,251/MWh on Monday during an early fall heat wave.