Herbert Farm Solar
Solar power plant · Charles County, Maryland
Nameplate capacity
5.5 MW
Rank in Maryland
#63
of 234 plants
In service since
2012
November 2012
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- SMECO Solar LLC
- County
- Charles County
- Generating units
- 1
- Share of state capacity
- 0.04%
- Rank among solar plants in Maryland
- #29 of 187
- EIA plant code
- 58463
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Solar Photovoltaic | 5.5 MW | 5.5 MW | 2012 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Maryland
| Berlin | Other | 5.6 MW |
| Spectrum Solar Hybrid | Solar | 5.6 MW |
| Wicomico | Other | 5.4 MW |
| Brookville Smart Bus Depot Microgrid | Solar | 5.0 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 5.5 MW solar plant and a 5.5 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Maryland power plants · What Maryland actually generates