- Combustion
- Storage
- Loads
- In development
- Under construction
- Operating
- Retired
- Size not stated
- 10 · 100 · 1,000 MW
Map
- Combustion
- Storage
- Loads
- In development
- Under construction
- Operating
- Retired
- Size not stated
Dickerson: location and 50 exact-grade projects within 25 km. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Dickerson
Power plant · Coal
Key facts
Power plant · Coal Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1959
- Grid
- Potomac Electric Power Co (PJM)
- Location
- Montgomery County, Maryland
- Operated by
- Lanyard Power Holdings, LLCSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Details
Who’s behind it
No companies named in filings yet.
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- Technology
- Coal source: “Conventional Steam Coal”
- Age
- 67 years since 1959
All 2 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Gem |
|
| 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
- August 2020
- Capacity retired
- 588 MW
- Generators retired
- 3
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 2 | Conventional Steam Coal | 196 MW | Retired | August 2020 |
| 3 | Conventional Steam Coal | 196 MW | Retired | August 2020 |
| ST1 | Conventional Steam Coal | 196 MW | Retired | August 2020 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Transmission or distribution system owner
- Potomac Electric Power Co
- Balancing authority
- PJM Interconnection, LLC
- NERC region
- RFC
Transmission lines within 25 km (10)
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.
Timeline
- Stated Units 2, 3, ST1 scheduled to retire, 588 MW · EIA-860M
- In service · EIA-860M
Sources
4 sourcesSources EIA-860M · GEM · LBNL · EIA-860M Preliminary Monthly Electric Generator Inventory
Sources
- EIA-860M Preliminary Monthly Electric Generator Inventory
- Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- LBNL — A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024 (OEDI submission 8742)Yin, 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.
- EIA-860M Preliminary Monthly Electric Generator Inventory
Around this plant
Nearby
within 25 kmSources Loudoun County · FAA OE/AAA · Virginia DEQ · EPA ICIS-Air · EIA-860M
Sources
- Loudoun County data center pipeline — land with a data center application in review or approvedSource: Loudoun County, Virginia
- FAA OE/AAA Part 77 obstruction evaluation case archives (data-centre sites, buildings and cranes)
- Virginia DEQ Air Sites (Daily) — sites DEQ flags as data centresSource: Virginia Department of Environmental Quality
- EPA ECHO ICIS-Air national facility download (data-centre selection, placed through FRS)
- EIA-860M Preliminary Monthly Electric Generator Inventory