Why is the US power grid under unusual strain this late spring, and what immediate actions has PJM taken?

The US power grid—specifically PJM Interconnection LLC’s system—is under unusual late-spring strain due to a blast of heat pushing temperatures above 90°F (32°C) across the East Coast, coinciding with critical off-season equipment repairs needed after winter storm damage to aging power plants and transmission infrastructure. In response, PJM has asked all generators to remain online to prevent blackouts and revoked permission for planned maintenance—a move intended to boost available capacity amid rising cooling demand and heightened risk of energy shortages overlapping with repair cycles.

What evidence does the article provide that grid stability is already being compromised in the Mid-Atlantic region?

The article cites localized price spikes and outage statistics showing some power plants in Maryland and the Washington, D.C. area have remained offline for repairs despite PJM’s interventions, contributing to market turbulence as cooling demand climbs; Gary Cunningham of Tradition Energy observed 'significant price volatility and grid stability issues in the Mid-Atlantic,' with electricity prices in Maryland rising roughly 20 times higher than those on New England’s grid—a clear indicator of stressed supply and localized instability.

Rising Heat Strains US Power Grid in Need of Off-Season Repairs

May 19, 2026

Late-spring heat strains the US power grid, prompting PJM Interconnection to revoke maintenance permissions and keep generators online. Aging infrastructure and surging demand risk market volatility and shortages before peak summer.

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