Markum Solar Farm
Bosque County, Texas · EIA plant ID 67580 · Operator: Markum Solar Farm, LLC
Nameplate161MWSummer 161 MW
Generators1in service
Net generation372GWh12 mo to Aug 2026
Capacity factor26%solar units, summer MW
Heat rate—thermal plants only
First online2024
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) |
|---|---|---|---|
| 2024 | 41.8 | 17.7% | — |
| 2025 | 364.6 | 25.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| MKM | Solar Photovoltaic | PV | 161 | 161 | Nov 2024 | Operating | — | coming soon |
Owner / operator
Operator: Markum Solar Farm, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Markum Solar Farm, LLC | 100.0% | 161 MW |
Nearby plants
Within 80 km.
| Dileo Solar | 71 MW | 15.9 km |
| Lake Whitney Solar | — | 16 km |
| Bosque County Peaking | 807 MW | 18.4 km |
| BT Hickerson Solar, LLC | 310 MW | 19.4 km |
| Whitney | 42 MW | 19.4 km |
| Leitrim Solar Park | — | 19.8 km |