Loudoun keeps testing what "by-right" really means

Loudoun County, the densest concentration of data-center capacity on earth, has spent the last several Board cycles re-litigating a question its earlier zoning answered too easily: where does a 60-acre, gigawatt-class campus actually belong?

The through-line is noise. Public hearings since 2023 have surfaced sustained complaints from residents adjacent to operating campuses, and staff have repeatedly returned with overlay-district language, decibel limits at the property line, and stricter screening requirements (Loudoun County Board of Supervisors meetings).

What this constrains

Nothing about these revisions stops new capacity outright. What they do is shift the burden of proof. A campus that would once have moved through site-plan review in months now negotiates noise studies, transformer placement, and substation siting in public — frequently for a year or more. The capital is patient, but the calendar is not free.

What to watch

• Whether the Board converts the noise overlay into a county-wide ordinance, or keeps it parcel-by-parcel.
• The next Dominion Energy substation siting case in the corridor — these are now the practical bottleneck.
• How adjacent jurisdictions (Prince William, Fauquier, Stafford) translate Loudoun's template into their own ordinances.