Emergency grid alert issued for East Coast as heat soars
An emergency grid alert has been issued for the East Coast due to a heatwave and increasing electricity demand. The strain on the grid is exacerbated by the significant power consumption of data centers, particularly in regions like Virginia, leading to rising wholesale power costs. The U.S. Energy Department has authorized PJM Interconnection to deploy backup generation to prevent blackouts.
PJM Interconnection LLC, the power grid operator for 13 states from Washington, D.C. to Chicago, has issued a low-level emergency alert due to soaring temperatures on the East Coast. Record-breaking heat in cities like Washington, D.C. and New York City has significantly increased electricity demand as more Americans turn on air conditioners. This heatwave is adding pressure to an already strained grid, which has seen power prices jump by almost 76 percent year-over-year in PJM's region, including data center-heavy Virginia.
According to a report by Monitoring Analytics, an independent monitor of PJM, the total cost of wholesale power increased to $136.53 per megawatt-hour in Q1 2026, up from $77.78 in Q1 2025. This rise is largely attributed to the rapid construction of data centers across the country, driven by the demand for artificial intelligence, which are causing electricity prices to increase and straining the grid. Researchers also warn that these data centers are creating "heat islands," warming surrounding land by up to 16 degrees.
In response to the strained power supplies, the U.S. Energy Department issued an emergency order authorizing PJM to utilize backup generation at data centers and other facilities to avert blackouts. PJM stated that the rising prices accurately reflect the tightening supply and demand conditions in the wholesale markets and assured it is working with local officials to mitigate consumer impacts.