CALVERT CLIFFS
SubstationVirginia · BALTIMORE GAS & ELECTRIC CO
CALVERT CLIFFS is an electric transmission substation in Virginia, operated by BALTIMORE GAS & ELECTRIC CO. It is classified as extra-high-voltage (500 kv) and connects 6 transmission lines. Substation proximity is one of the strongest speed-to-power signals for siting a datacenter — interconnection distance to an energized, high-voltage bus is often the binding constraint on time-to-energization.
Voltage & classification
Connected transmission lines
Lines terminating at or passing through this substation, by HIFLD line ID, highest voltage first.
| Line ID | Voltage | Owner | Status | Length |
|---|---|---|---|---|
| #11398 | 500 kV | — | IN SERVICE | 18.5 mi |
| #43436 | 500 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 48.2 mi |
| #43480 | 500 kV | BALTIMORE GAS & ELECTRIC CO | — | 0.3 mi |
| #46178 | 500 kV | BALTIMORE GAS & ELECTRIC CO | IN SERVICE | 48.2 mi |
| #46869 | 500 kV | BALTIMORE GAS & ELECTRIC CO | — | 0.2 mi |
| #49871 | 500 kV | BALTIMORE GAS & ELECTRIC CO | — | 0.2 mi |
Nearby datacenter candidate sites
Scored candidate sites within roughly 25 miles of CALVERT CLIFFS, ranked by DC Readiness. Sites this close to an energized substation carry a strong speed-to-power advantage.
| Site | Type | State | County | Voltage | Capacity | Queue wait | Score |
|---|---|---|---|---|---|---|---|
| UNKNOWN162181 | Substation-Adjacent | MD | Prince George's County | 500 kV | 1,000 MW | 3.1 yrs | 78.3 |
| UNKNOWN162182 | Substation-Adjacent | MD | Prince George's County | 500 kV | 1,000 MW | 3.1 yrs | 77.6 |
| BRANDYWINE POWER FACILITY | Substation-Adjacent | MD | Prince George's County | 230 kV | 300 MW | 3.1 yrs | 73.7 |
| CALVERT CLIFFS | Substation-Adjacent | MD | Calvert County | 500 kV | 1,000 MW | 3.1 yrs | 71.5 |
| Greenfield (CHALK POINT - UNKNOWN162181) | Greenfield | MD | Prince George's County | 500 kV | 1,000 MW | 3.1 yrs | 70.4 |
| TALBERT TAP | Substation-Adjacent | MD | Prince George's County | 230 kV | 300 MW | 3.1 yrs | 70.2 |
| BURCHES HILL | Substation-Adjacent | MD | Prince George's County | 500 kV | 1,000 MW | 3.1 yrs | 69.7 |
| NORTHEAST | Substation-Adjacent | MD | Prince George's County | 230 kV | 300 MW | 3.1 yrs | 69.1 |
Dataset updated . Screening estimates derived from public data sources.
Substation attributes are derived from public HIFLD / EIA infrastructure data and may lag real-world upgrades or retirements. Voltage and connected-line counts are screening figures — confirm available capacity and interconnection terms directly with the operating utility and ISO.
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This page shows a public slice of the GridCensus dataset for CALVERT CLIFFS substation, Virginia. 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.