Loudoun County, Virginia, reported approximately 233 data-center buildings built or under construction as of March 2026—the world’s highest concentration—as rising electricity demand drives new grid investment
Loudoun County, Virginia, hosts the world's highest concentration of data centers, with 233 buildings built or under construction and significant planned expansion. This rapid growth has led to massive electricity demand, prompting Dominion Energy Virginia to make major grid investments. In response, Loudoun County has eliminated by-right development for data centers and the state utility commission is implementing new requirements for high-load customers.

