WALNEY
Substation-AdjacentFairfax city, Virginia · PJM
WALNEY is a substation-adjacent datacenter candidate site in Fairfax city, Virginia, interconnecting through PJM. It screens at 76.8/100 DC Readiness with a catalogued 300 MW of candidate capacity and a 3.1 yrs average interconnection-queue wait.
Power & interconnection
Speed to power
Connectivity
Site characteristics
Risk & environment
Location context
Incentive detail: Sales tax exemption on DC equipment for $150M+ investments (2025: $100M+); MEGA site program.
Full DC Readiness breakdown
All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.
Nearby comparable sites
Other scored datacenter candidate sites in Fairfax city, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| RESTON | Substation-Adjacent | 230 kV | 300 MW | 3.1 yrs | 75.9 |
| DRANESVILLE | Substation-Adjacent | 230 kV | 300 MW | 3.1 yrs | 75.5 |
| HARRISON | Substation-Adjacent | 138 kV | 100 MW | 3.1 yrs | 71.2 |
| DULLES | Substation-Adjacent | 230 kV | 300 MW | 3.1 yrs | 71.0 |
| CLARK | Substation-Adjacent | 230 kV | 300 MW | 3.1 yrs | 69.9 |
| DAVIS DRIVE | Substation-Adjacent | 230 kV | 300 MW | 3.1 yrs | 69.4 |
| TYSONS | Substation-Adjacent | 230 kV | 300 MW | 3.1 yrs | 67.7 |
Dataset updated . Screening estimates derived from public data sources.
Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for WALNEY, Fairfax city. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.