Latest News

The largest US power grid warns of record demand and price spikes

PJM, America's largest?electric grid operator?, warned on Wednesday of price spikes and massive transmission line congestion, as it?prepared? for record-breaking demand fueled by a heatwave ahead of the July 4th celebrations. In PJM’s Virginia zone - home to the largest concentration of data centers in the world - spot wholesale electricity prices soared Wednesday afternoon to over $600 per megawatt. Prices were around $40 per megawatt hour earlier in the day before temperatures rose to 100 degrees Fahrenheit. On Wednesday afternoon, the demand on the grid reached 160 gigawatts. This is close to an all-time record. PJM forecasts indicate that the 165.5 GW record set by PJM will be surpassed on Thursday evening. PJM provides electricity to 67 million residents in the Mid-Atlantic, South, and Washington, D.C. regions. Even before the heatwave this week, PJM was 'working to overhaul a system that had been pushed to its limits by data centers and electric cars. On Wednesday afternoon, the grid operator issued an "alert" asking power plants maximize their output. They were also asked to check whether generators that had been taken out of service could be brought back into service. PJM’s low-voltage warning signaled a higher risk of rotating power outages as?voltage on transmission lines weakens. Grid operator has also warned power plants that they should bring their generators back into service to be able to meet the surge in demand.

Gridraven's CEO, Georg Rute, stated that extreme heat, low winds and surging demand coincide at a moment when transmission lines are least safe. This is contributing to the spikes in electricity costs, as power moving costs are increasing amid heavy congestion.

The temperatures are expected to be around 100 F this week from Boston to Washington, D.C., close to Northern Virginia's vast hub of data centers. This will cause a surge in demand for air conditioning, which will put additional strain on PJM, and other regional grids. New York ISO, the grid operator for New York State, has asked customers to reduce their air conditioning use and large appliances. NYISO has prepared for a demand of over 32 GW on Thursday, which is just short of the 34 GW record set in 2013.

PJM will be put to the test at 6 pm EDT, Thursday, when demand for grid power is expected to reach 166.3 gigawatts. According to PJM, this would be a record-breaking demand.

PJM has 18 GW in reserve that can be turned on within 30 minutes to meet any unexpected power shortages.

The spot electricity price?will probably spike to over $1,000 per MWh on Wednesday evening, as PJM operators deal with congested powerlines around a Virginia data center hub. They will also dispatch expensive power plants mainly fueled primarily by coal and gas to meet the highest electricity demand of the day. This week, coal plant production has accounted for up to 22% of PJM’s electricity supply with a total output of around 28?GW. According to PJM's generation data, this is about 75% more than the average for?2026. Another record in the Midwest could be broken Wednesday evening. The Midcontinent Independent System Operator, the regional grid operator of 15 U.S. States in the Midwest and South, has forecast that the record demand of 127.1 GW may fall. (Reporting by Tim McLaughlin, Editing by Mark Porter & Edmund Klamann).

(source: Reuters)