Power plant · Maryland, United States
Conowingo
Conowingo is a power plant in Maryland, United States, with 531 MW of capacity, owned by Constellation Power, Inc.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Maryland | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Status | Operating | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Start year | 1928 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Owner | Constellation Power, Inc | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Operator | Constellation Power, Inc | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Capacity | 531 MW | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Technology | Conventional Hydroelectric | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
| Coordinates | 39.6572, -76.1752 | EIA-860 / 860M / 923 · Public domain · checked 24 Oct 2026 |
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How it compares
Conowingo is the 9th-largest of 10 power plants in Maryland and the 695th-largest of 800 in the United States by capacity; its 531 MW is <0.1% of the 839,036 MW we hold for the United States. Ranks and totals cover the power plants in our data that report their capacity, not every one in existence. Power plants planned, permitted or under construction are ranked apart.
| Within | Rank | Total | Share |
|---|---|---|---|
| Maryland | 9th of 10 | 10,358 MW | 5.1% |
| United States | 695th of 800 | 839,036 MW | <0.1% |
| All power plants in our data | 752nd of 4,829 | 1,037,268 MW | <0.1% |
Nearby
Within 50 km of this power plant: 1 data center, measured from the coordinates in the facts above.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| CoreWeave Lancaster Greenfield site | Data center | — | Under construction | 44 km |
Owner, operator and place
More from Constellation Power, Inc
- Handley1,315 MW
- Wolf Hollow II1,231 MW
- Colorado Bend II1,230 MW
- Muddy Run1,072 MW
- Eddystone Generating Station862 MW
- Croydon CT Generating Station546 MW
Other power plants in Maryland
- Calvert Cliffs Nuclear Power Plant1,850 MW
- Chalk Point Power1,825 MW
- Brandon Shores1,370 MW
- Wildcat Point Generation Facility1,114 MW
- Key831 MW
- Essential Power Rock Springs LLC796 MW
- CPV St Charles Energy Center775 MW
- Herbert A Wagner774 MW
Data on this page
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- Epoch AI. Epoch AI data centers, CC BY 4.0.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.