Great Bay Solar 1
Somerset County, Maryland · EIA plant ID 59851 · Operator: Great Bay Solar I LLC
Nameplate118MWSummer 118 MW
Generators2in service
Net generation138GWh12 mo to Aug 2026
Capacity factor13%solar units, summer MW
Heat rate—thermal plants only
First online2018
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), solar units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2018 | 107.2 | 19.5% | — |
| 2019 | 134.2 | 20.4% | — |
| 2020 | 130.8 | 19.9% | — |
| 2021 | 131.6 | 20.0% | — |
| 2022 | 140.3 | 21.3% | — |
| 2023 | 138.9 | 21.1% | — |
| 2024 | 138.7 | 21.1% | — |
| 2025 | 134.6 | 13.0% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| GBS01 | Solar Photovoltaic | PV | 75 | 75 | Mar 2018 | Operating | — | coming soon |
| GBS02 | Solar Photovoltaic | PV | 43 | 43 | Aug 2020 | Operating | — | coming soon |
Owner / operator
Operator: Great Bay Solar I LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Great Bay Solar I LLC | 100.0% | 118 MW |
Nearby plants
Within 80 km.
| Eastern Correctional Institute | 6 MW | 1.2 km |
| UMES (MD) - Princess Anne | 2 MW | 4.2 km |
| UMMS at Pocomoke | 3 MW | 10.9 km |
| Costen Solar | 9 MW | 11 km |
| Parker Place | 2 MW | 21.8 km |
| Crisfield | 12 MW | 23 km |