Rising Data Center Electricity Use Risks Blackouts During Winter Storms

Why It Matters

The insight highlights a emerging reliability risk for the power grid as data centers become major, constant electricity consumers, prompting utilities and policymakers to reassess capacity planning, battery storage strategies, and demand‑response protocols to avoid costly blackouts.

Summary

The North American Electric Reliability Corporation (NERC) warns that rising electricity demand from data centers could strain the grid during winter storms, with overall winter demand projected 2.5% higher than last year, reaching 20 GW. Data‑center growth in the Mid‑Atlantic, West, Southeast, and especially Texas is identified as a key driver of this increase and a potential source of supply shortfalls. While added battery storage in Texas mitigates the risk compared with the 2021 cold‑snap crisis, the continuous power draw of data centers could outpace battery capacity during prolonged cold events, forcing curtailments or rolling blackouts. NERC notes that without a major storm, the grid should remain stable, but four severe storms in the past five years raise the likelihood of emergency measures.