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US Power Update: Electricity Prices Mixed Tuesday As MISO Hits $378.30/MWh Peak

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US electricity prices varied widely across major markets Tuesday afternoon, with natural gas dominating the fuel mix and intraday peaks reaching $378.30 per megawatt-hour, according to data from GridStatus.io.

Electric Reliability Council of Texas' real-time locational marginal price stood at $22.62/MWh at 4 p.m. ET. Net load reached 47.14 gigawatts, with natural gas making up the largest share of the generation mix at 40.6%.

California Independent System Operator's real-time LMP came in at $42.36/MWh at 4 p.m. ET. Net load was 12.72 GW, with solar providing the largest share of the generation mix at 51.3%.

Southwest Power Pool's real-time LMP was $28.92/MWh at 4 p.m. ET. Net load totaled 40.72 GW, with natural gas holding the largest share of the generation mix at 35.7%.

PJM's real-time LMP stood at $34.70/MWh at 4 p.m. ET. Net load reached 113.81 GW, while gas supplied the largest share of the generation mix at 41.3%. Prices rose to an intraday high of $276.35/MWh at 2:30 p.m. ET.

Midcontinent Independent System Operator's real-time LMP came in at $35.44/MWh at 4 p.m. ET. Net load was 84.37 GW, with natural gas making up the largest share of the generation mix at 32.8%. Prices climbed to an intraday peak of $378.30/MWh at 7:00 a.m. ET.

New York Independent System Operator's real-time LMP was $45.56/MWh at 4 p.m. ET. Net load totaled 19.61 GW, with dual fuel representing the largest share of the generation mix at 30.0%. Prices reached an intraday high of $202.70/MWh at 10:40 a.m. ET.

ISO New England's real-time LMP stood at $62.38/MWh at 4 p.m. ET. Net load reached 12.43 GW, with natural gas providing the largest share of the generation mix at 46.1%.

Independent Electricity System Operator's real-time LMP was $49.98/MWh at 4 p.m. ET. Net load was 19.68 GW at 3:55 p.m. ET, with nuclear accounting for the largest share of the generation mix at 44.1%.

The National Weather Service's Climate Prediction Center forecasts above-normal temperatures across much of the western and southern US from Sept. 16 to Sept. 22, with below-normal to near-normal readings across parts of the Midwest and Northeast.

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