HEWITT ROAD SWITCHING STATION
Substation-AdjacentSt. Mary's County, Maryland · PJM
HEWITT ROAD SWITCHING STATION is a substation-adjacent datacenter candidate site in St. Mary's County, Maryland, interconnecting through PJM. It screens at 58.9/100 DC Readiness with a catalogued 300 MW of candidate capacity and a 3.8 yrs average interconnection-queue wait.
Power & interconnection
Speed to power
Middle-of-the-pack interconnection conditions for this grid.
Connectivity
Site characteristics
Risk & environment
Location context
Regulatory climate
No notable statewide DC restriction on record; confirm local zoning and utility tariffs.
Incentive detail: Enterprise Zone property tax credits; personal property tax credits on DC equipment.
Site location
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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 St. Mary's County, ranked by DC Readiness.
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| OZ St. Mary's | Greenfield | — | — | 3.5 yrs | 57.9 |
| EC Coal St. Mary's County | Greenfield | — | — | 3.5 yrs | 53.8 |
| TAP123962 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 52.7 |
| UNKNOWN123963 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 52.7 |
| UNKNOWN123951 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 52.7 |
| UNKNOWN123297 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 52.7 |
| TAP139050 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 52.6 |
| UNKNOWN123947 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 52.5 |
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.
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