WASHINGTON, D.C. — The U.S. Department of Energy (DOE) has declared an emergency across the PJM Interconnection, the nation's largest regional power grid, as an intense heat wave drives electricity demand to exceptionally high levels across the eastern United States.

The emergency order was issued after PJM warned that soaring temperatures and surging electricity consumption could create an imminent reliability emergency. Peak demand is forecast to exceed 160,000 megawatts, placing extraordinary stress on the grid that serves millions of homes and businesses across multiple states.

Federal officials said the temporary emergency measures are intended to ensure sufficient electricity supplies remain available during the heat wave. The order allows grid operators additional flexibility to keep generating units online while protecting the stability of the electric system and reducing the risk of widespread outages.

Energy analysts say the situation highlights the growing challenge of balancing rising electricity demand with grid reliability during increasingly frequent periods of extreme weather. Utility companies are urging consumers to conserve energy during peak afternoon and evening hours by adjusting thermostats, delaying the use of major appliances, and reducing unnecessary electricity consumption.

Officials continue to monitor weather conditions and grid performance around the clock. While emergency measures are expected to strengthen reliability, authorities stress that public cooperation will play an important role in maintaining a stable electricity supply as the heat wave continues.