DG Iron Mountain
Middlesex County, New Jersey · EIA plant ID 62957 · Operator: DG Edison New Jersey LLC
Nameplate5MWSummer 5 MW
Generators1in service
Net generation6GWh12 mo to Dec 2025
Capacity factor13%solar units, summer MW
Heat rate—thermal plants only
First online2020
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) |
|---|---|---|---|
| 2020 | 3.6 | 12.9% | — |
| 2021 | 7.1 | 15.0% | — |
| 2022 | 6.6 | 14.0% | — |
| 2023 | 6.2 | 13.2% | — |
| 2024 | 6 | 12.7% | — |
| 2025 | 6.1 | 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 |
|---|---|---|---|---|---|---|---|---|
| IRNMT | Solar Photovoltaic | PV | 5.4 | 5.4 | Jun 2020 | Operating | — | coming soon |
Owner / operator
Operator: DG Edison New Jersey LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| DG Edison New Jersey LLC | 100.0% | 5 MW |
Nearby plants
Within 80 km.
| 180 Raritan Solar | 2 MW | 0.9 km |
| Gourmet Lane - SLNNJ480 | 2 MW | 1.6 km |
| Wakefern Food Corp | 2 MW | 2 km |
| Summit Associates | 2 MW | 2.4 km |
| Woodbridge Energy Center | 773 MW | 2.5 km |
| FedEx Woodbridge | 2 MW | 2.6 km |