Heat Wave Has U.S. Electric Usage at Highest Level in Years

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The heat wave roasting the U.S. East Coast may be slowing down U.S. stock trading and foiling July 4 road trips. But it’s the best friend of power market bulls.

Electricity demand across the eastern power market run by PJM Interconnection LLC reached 144,557 megawatts in the hour ended at 2 p.m. New York time — the highest since Aug. 12, 2016 — as people blasted their air conditioners and fans to keep cool. In New York, which is suffering through a fourth consecutive day of temperatures above 90 degrees Fahrenheit (32 degrees Celsius), power use surged to the highest levels since 2013.

The spike in demand sent wholesale electricity prices at PJM’s Western hub surging 19 percent to $103.51 a megawatt-hour in the hour ended 1 p.m. local time. That’s the highest average for that time of day since March 12, according to Genscape Inc. data compiled by Bloomberg. PJM issued a hot-weather alert through 11 p.m. Tuesday. Average prices in New York City hit the highest since April for the hour ended 11 a.m.

New York has cracked 90 degrees Fahrenheit or above every day since Saturday and could get there again as summer’s first heat wave keeps a grip on the Northeast. Temperatures could slip a few degrees in New York and New England Wednesday, but that probably won’t bring much relief as humidity will remain high, said Richard Bann, a forecaster at the U.S. Weather Prediction Center in College Park, Maryland. Washington will notice even less of a change.

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SOURCE: Tim Loh and Brian K Sullivan
Bloomberg