PJM Handles 162 Gigawatts of Demand in 100-Degree Heat, Avoiding Outages
Updated
Updated · POLITICO · Jul 7
PJM Handles 162 Gigawatts of Demand in 100-Degree Heat, Avoiding Outages
3 articles · Updated · POLITICO · Jul 7
Summary
162 gigawatts of demand hit PJM on July 2 as temperatures reached 100F, marking the grid operator’s second-highest load ever while serving 67 million people across 13 states.
PJM avoided outages partly by paying large power users to cut consumption; without that demand-response program, load likely would have topped the 165-gigawatt record.
The operator also did not invoke federal authority to tap data centers’ diesel backup generators, sidestepping an emergency step that would have increased pollution.
Elsewhere, MISO reached 121 gigawatts on June 30—its highest in nearly a decade—and New York demand neared 31 gigawatts, with localized outages reported in Michigan, New York City and Wisconsin.
The strain is unlikely to fade this summer: NERC has warned some regions could face shortages in extreme heat, even as Grid Strategies argues new wind, solar and battery additions should keep reliability intact.
As AI data centers drive record electricity demand, who will ultimately pay for the massive grid upgrades required?
With renewables growing rapidly, is aging transmission infrastructure now the true threat to the U.S. power grid?
How will the EPA's historic rollback of climate regulations affect America's global economic and environmental standing?
The July 2026 PJM Grid Crisis: How Record Heat, Data Center Demand, and Aging Infrastructure Nearly Triggered Widespread Blackouts
Overview
In early July 2026, the PJM grid faced a severe test as a major heat wave drove electricity demand to record highs, pushing the system to its limits. Over the Fourth of July weekend, escalating shortages forced PJM to activate emergency powers and take urgent, unprecedented actions to maintain stability. With the Department of Energy’s approval, PJM tapped into backup power from AI data centers, helping the grid narrowly avoid widespread blackouts. This near-miss highlights how extreme weather and rising demand are straining the grid, requiring rapid emergency responses to prevent large-scale outages.