US’s Largest Grid Operator Warns: Power Demand Set to Hit Record High

Category: Industry News

Time: 2026-07-07

Summary: With the U.S. Independence Day celebrations on July 4 drawing near, PJM Interconnection, America’s largest grid operator, has issued a power alert. U.S. electricity demand is poised to shatter all-time records, spot power prices are skyrocketing, and widespread transmission line congestion has emerged, raising risks of rolling blackouts across large swathes of the country.

Surging Power Demand Driven by Heatwaves and AI Boom

As of Wednesday afternoon Eastern Time, wholesale spot power prices in PJM’s Virginia zone—home to the world’s largest cluster of data centers—had soared above $600 per megawatt-hour, equivalent to 4.07 Chinese yuan per kilowatt-hour.
By Wednesday afternoon, PJM’s grid load topped 160 gigawatts, edging close to the all-time peak. PJM forecasts that the previous record of 165.5 gigawatts will be broken on Thursday evening.
PJM serves 67 million people across 13 U.S. states stretching from the Midwest to the East Coast, plus Washington, D.C. Well before this week’s heatwave arrived, the grid was already under immense strain from surging power consumption spurred by data centers and electric vehicles, leaving its power infrastructure operating near capacity and in urgent need of upgrades. The current heatwave has pushed electricity demand even higher.
Temperatures across regions from Boston to Washington, D.C., near the major data center hub in Northern Virginia, are projected to hover around 100 degrees Fahrenheit (37.8 degrees Celsius) this week. This will trigger a sharp jump in air conditioning use and compound pressure on PJM and other regional power grids.

Other grid operators have issued similar warnings apart from PJM.

 

New York Independent System Operator (NYISO), the grid authority for New York State, expects statewide power load to exceed 32 gigawatts on Thursday, nearing the historic high of 34 gigawatts set in 2013. NYISO has called on power consumers to cut back on air conditioning and high-power appliances.

Midcontinent Independent System Operator (MISO), which manages the regional grid covering 15 states in the U.S. Midwest and South, has also cautioned that regional power demand may surpass the prior record of 127.1 gigawatts. MISO projects the power peak will hit a new all-time high late Wednesday.

Mounting Risks of Rolling Blackouts

On Wednesday afternoon Eastern Time, PJM activated an alert, ordering all power plants to ramp up generation to full capacity and inspect offline generators for potential restart to boost supply.
PJM warned that falling voltage levels on transmission lines are pushing up the likelihood of rolling blackouts nationwide.
Georg Rute, CEO of Gridraven, stated that extreme heat, weak wind output and skyrocketing power demand have coincided at a time when U.S. transmission grids are already operating with minimal safety margins. Severe congestion has driven up power delivery costs, sending electricity prices surging.
PJM’s latest projections show its most severe test will arrive at around 6 p.m. Eastern Time on Thursday, July 2, when grid demand is expected to reach 166.3 gigawatts, breaking the 20-year-old all-time consumption record.
Late Wednesday Eastern Time, spot power prices were expected to peak above $1,000 per megawatt-hour (6.79 Chinese yuan per kilowatt-hour). The spike came as PJM operators worked to ease congestion on power lines surrounding Virginia’s data center hub and dispatched costly gas and coal-fired power plants to meet the day’s record power needs.
PJM generation data shows coal-fired power plants supplied roughly 22% of its total electricity this week, at nearly 28 gigawatts—approximately 75% higher than the average recorded since the start of 2026.

Keywords: US’s Largest Grid Operator Warns: Power Demand Set to Hit Record High

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