How Loudoun County data centers are linked to power flickering across half the U.S.

How Loudoun County data centers are linked to power flickering across half the U.S.

News ClipNBC4 Washington·Ashburn, Loudoun County, VA·7/25/2026

A brief power flicker across the Eastern U.S. on Wednesday morning was linked to data centers in Ashburn, Virginia, and a Dominion Energy equipment failure. This event raises significant concerns among experts and local officials about the immense strain data centers place on the power grid and the potential for future widespread instability. It highlights the urgent need for infrastructure upgrades and regulatory discussions.

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Gov: Loudoun County Board of Supervisors

Just before 8 a.m. Wednesday, a power flicker lasting approximately 10 minutes affected the entire Eastern half of the U.S., spanning from Chicago to Boston and Miami. Engineer Bob Marshall of Ting Labs, whose company monitors home electricity, linked this widespread disruption to Data Center Alley in Ashburn, Virginia, asserting it signals a dangerous strain on the nation's infrastructure.

Marshall's collected data, sourced from millions of household monitoring devices, indicated electricity drops and spikes across the region at 7:56 a.m., which recurred several times over the subsequent 10 minutes. Dominion Energy corroborated that equipment failure on a high-voltage transmission line serving data centers caused the incident, compelling the data centers to switch to their backup power systems. This abrupt power source transition reportedly created significant "ripples" across the electric current, impacting a vast geographical area.

Despite Dominion Energy's safety systems successfully mitigating the immediate issue, experts like Marshall warn that similar future events could lead to extensive grid instability if current trends continue without intervention. Michael Turner, vice chair of the Loudoun County Board of Supervisors, acknowledged the unprecedented challenges facing the data center industry and noted ongoing efforts to implement preventative measures. The incident underscores the critical necessity for infrastructure enhancements and regulatory frameworks to effectively manage the escalating power demands from the rapidly expanding data center sector.