Upper Blackstone (MA) Treasure Valley
Worcester County, Massachusetts · EIA plant ID 59781 · Operator: Nexamp Treasure Valley Solar, LLC
Nameplate5MWSummer 5 MW
Generators1in service
Net generation6GWh12 mo to Dec 2025
Capacity factor14%solar units, summer MW
Heat rate—thermal plants only
First online2014
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) |
|---|---|---|---|
| 2014 | 2.7 | 12.2% | — |
| 2015 | 7.4 | 16.9% | — |
| 2016 | 7.8 | 17.7% | — |
| 2017 | 5.7 | 13.0% | — |
| 2018 | 6.6 | 15.0% | — |
| 2019 | 7 | 15.9% | — |
| 2020 | 6.9 | 15.7% | — |
| 2021 | 7.1 | 16.1% | — |
| 2022 | 7.1 | 16.1% | — |
| 2023 | 6.9 | 15.7% | — |
| 2024 | 7.3 | 16.5% | — |
| 2025 | 6.2 | 14.2% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Solar Photovoltaic | PV | 5 | 5 | Jul 2014 | Operating | — | coming soon |
Owner / operator
Operator: Nexamp Treasure Valley Solar, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Nexamp Treasure Valley Solar, LLC | 100.0% | 5 MW |
Nearby plants
Within 80 km.
| Pleasantdale Road Community Solar | 1 MW | 1.2 km |
| SJA Solar LLC-Solterra Monastery CSG | 15 MW | 5.8 km |
| Paxton BESS 1 | 3 MW | 5.8 km |
| ZPD-PT Solar Project 2017-044 LLC CSG | 1 MW | 6.3 km |
| Golden Hills Solar | 5 MW | 7.5 km |
| Wilson Solar | 2 MW | 7.7 km |