Data centers might need backup power as Ohio's grid preps for record usage

The U.S. Department of Energy has approved emergency measures allowing PJM Interconnection, the electric grid operator for Ohio and several other states, to potentially order data centers and other large energy users to switch to backup power. This action comes as a significant heat dome is causing record energy demand across the region, with PJM forecasting a new peak of 165.5 gigawatts on July 2.

The authorization, effective from July 1 to July 3, aims to protect the power grid and ensure adequate electricity supply for residential customers. This is considered a "last resort" to avoid rolling blackouts or voltage reductions, particularly as central Ohio, home to a majority of the state's more than 230 data centers, has been under an extreme heat warning.

The National Weather Service in Wilmington, Ohio, anticipates a high of 96 degrees on July 4, with Accuweather predicting a "real feel" of 105 degrees, further straining the grid as air conditioning usage surges. While the federal government has authorized the request, PJM Interconnection had not issued a mandatory order for backup power as of July 2, but the option remains available under emergency conditions.