- Combustion
- Loads
- Operating
- Retired
- Size not stated
- 10 · 100 · 1,000 MW
Map
- Combustion
- Loads
- Operating
- Retired
- Size not stated
Notch Cliff: location and 1 exact-grade project within 15 mi. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Notch Cliff
Power plant · Gas, combustion turbine
Key facts
Power plant · Gas, combustion turbineran 3% of 2019 Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1969
- Net generation, 2019
- 43,575 MWh
- Grid
- 115 kV to Baltimore Gas & Electric Co (PJM)
- Location
- Baltimore County, Maryland
- Operated by
- Constellation Power Source Generation, LLC
Output
- Gas
Details
Who’s behind it
- Owner
- Exelon
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- Technology
- Gas, combustion turbine source: “Natural Gas Fired Combustion Turbine”
- Age
- 57 years since 1969
All 2 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| EPA greenhouse gas reporting (GHGRP) |
|
| Balancing authority code | PJM |
Retirement
EIA-860M September 2026StatusEvery generator EIA lists at this plant has retired. As of EIA-860M for September 2026.- Retired
- June 2020
- First unit retired
- March 2020
- Capacity retired
- 144 MW
- Generators retired
- 8
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| GT5 | Natural Gas Fired Combustion Turbine | 18 MW | Retired | March 2020 |
| GT6 | Natural Gas Fired Combustion Turbine | 18 MW | Retired | March 2020 |
| GT7 | Natural Gas Fired Combustion Turbine | 18 MW | Retired | March 2020 |
| GT8 | Natural Gas Fired Combustion Turbine | 18 MW | Retired | March 2020 |
| GT1 | Natural Gas Fired Combustion Turbine | 18 MW | Retired | June 2020 |
| GT2 | Natural Gas Fired Combustion Turbine | 18 MW | Retired | June 2020 |
| GT3 | Natural Gas Fired Combustion Turbine | 18 MW | Retired | June 2020 |
| GT4 | Natural Gas Fired Combustion Turbine | 18 MW | Retired | June 2020 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 115 kV
- Transmission or distribution system owner
- Baltimore Gas & Electric Co
- Balancing authority
- PJM Interconnection, LLC
- NERC region
- RFC
Transmission lines within 15 mi (10)
- Windy Edge Station - Northeast 115 kV
- Northeast 115 kV line
- Northeast 115 kV line
- Northeast 115 kV line
- Northeast - Raphael Road Switching Station 230 kV
- Northeast - Raphael Road Switching Station 230 kV
- Riverside - Northeast 230 kV
- Riverside - Northeast 230 kV
- Raphael Road Switching Station 230 kV line
- Raphael Road Switching Station 230 kV line
Can the connection be reused?
A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.
Ownership
2 companies2| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| Constellation Power Source Generation, LLC | Operator | EIA-860M | ||
| Exelon | Owner | 100.0% | Dec 31, 2023 | EPA GHGRP |
Timeline
- Stated Units GT1, GT2, GT3, GT4 scheduled to retire, 72 MW · EIA-860M
- Stated Units GT5, GT6, GT7, GT8 scheduled to retire, 72 MW · EIA-860M
- In service · EIA-860M
Sources
5 sourcesSources EIA-860M · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
Sources
- EIA-860M
- LBNLYin, Nait Belaid & Heleno (2026), Lawrence Berkeley National Laboratory, OEDI, CC BY 4.0: A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024. Modified by Inframation: HIFLD-side fields only, names re-cased, coordinates rounded.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
Around this plant
Nearby
within 15 mi| Project | Kind | Away | MW |
|---|---|---|---|
| CONTROL DATA CORP. Built | Large load | 14.4 mi |
Sources EPA ICIS-Air