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The demand for electricity at the largest US grid is nearing winter records

On Thursday, the largest U.S. electrical grid operated at near-record?levels of demand amid freezing temperatures. Forecasters predict another arctic blast for the weekend.

The PJM interconnection, which'manages' the flow of electricity to 67 million residents in 13 Mid-Atlantic and Midwest states, as well as Washington, D.C., recorded a morning demand for electric power at 140 gigawatts. The grid's winter demand record is 143.7 GW. It was set in January 2025.

Earlier this week, PJM predicted that the record would be broken on?Friday. They forecasted 148 GW in demand. PJM says that Friday's demand is expected to be 142 GW, not the 148 GW predicted earlier in the week.

PJM, the electric grids of New York and New England and PJM had to deal with congested high voltage lines in their respective territories. Temperatures hovering over 0?degrees F (-18 Celsius) have led to power line overloads this week due to a surge in demand.

The cold caused gas-fired boilers to malfunction and coal-fired generators to lose their power.

PJM predicts a lower outage rate for Friday at 15 gigawatts or 8% of 180.8 GW operational capacity.

PJM spot wholesale prices on?Thursday were $150 per MWh. This was a far cry from the?brief peaks of $3,000 per MWh that occurred earlier in this week. Prices lowered as temperatures warmed up a bit and gas supply became more plentiful for power generators.

Matthew Palmer, the head of Americas Gas Research at S&P Global Energy, said that it is possible for prices to spike again in the event of a significant storm and severe cold. The closer it gets to March, and the end of winter heating season, the less likely this is. (Reporting by Tim McLaughlin. Editing by David Gregorio.)

(source: Reuters)