Datacenter Sites in St. Mary's County, Maryland
St. Mary's County has 30 scored datacenter candidate sites averaging 50.2/100 DC Readiness, with a catalogued aggregate of 1,200 MW. FEMA rates local natural-hazard risk as "Relatively Low". The county has a datacenter tax incentive on record.
30
Candidate sites
50.2/100
Avg DC Readiness
1,200 MW
Catalogued capacity
theoretical aggregate
Relatively Low
Hazard rating
Site-selection context for St. Mary's County
Yesproperty_tax_credits
Datacenter tax incentive
8.04¢/kWh
Commercial electricity
—
Industrial electricity
3
Fiber providers
Low
Water stress
$8,652
Land price / acre
1,300
Cooling degree days
4,400
Heating degree days
55°F
Mean annual temp
Incentive detail: Enterprise Zone property tax credits; personal property tax credits on DC equipment.
By site type
Top datacenter sites in St. Mary's County
| Site | Type | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|
| HEWITT ROAD SWITCHING STATION | Substation-Adjacent | 230 kV | 300 MW | 3.8 yrs | 57.6 |
| OZ St. Mary's | Greenfield | — | — | 3.5 yrs | 56.4 |
| EC Coal St. Mary's County | Greenfield | — | — | 3.5 yrs | 52.4 |
| UNKNOWN123963 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.4 |
| TAP123962 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.4 |
| UNKNOWN123297 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.4 |
| UNKNOWN123951 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.4 |
| TAP139050 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.3 |
| UNKNOWN123949 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.2 |
| UNKNOWN123947 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.2 |
| UNKNOWN123950 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.2 |
| UNKNOWN123961 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.2 |
| TAP123956 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.1 |
| UNKNOWN123944 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.1 |
| TAP139048 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 51.1 |
| TAP139049 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 50.9 |
| UNKNOWN123958 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 50.7 |
| UNKNOWN123943 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 50.6 |
| TAP139047 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 50.4 |
| UNKNOWN123942 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 50.4 |
| UNKNOWN123941 | Substation-Adjacent | 69 kV | 50 MW | 3.8 yrs | 50.2 |
| EC Coal St. Mary's County | Greenfield | — | — | 3.5 yrs | 49.5 |
| Mine Site | Former Mine | — | — | 3.8 yrs | 47.3 |
| Leonardtown Wharf-327 | Industrial | — | — | 3.8 yrs | 46.3 |
| Leonardtown Wharf-326 | Industrial | — | — | 3.8 yrs | 46.3 |
St. Mary's County datacenter FAQ
- How many datacenter sites are in St. Mary's County?
- 30 scored datacenter candidate sites, averaging 50.2/100 DC Readiness.
- Does St. Mary's County offer datacenter tax incentives?
- Enterprise Zone property tax credits; personal property tax credits on DC equipment.
- What is the natural-hazard risk in St. Mary's County?
- FEMA's National Risk Index rates St. Mary's County as "Relatively Low" (score 22).
Dataset updated . Screening estimates derived from public data sources.
Go deeper than the public screen
This page shows a public slice of the GridCensus dataset for St. Mary's County, Maryland. Pro and Enterprise plans unlock the full 147,272-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.