Zimmerman Energy
Marshall County, Indiana · EIA plant ID 59425 · Operator: Landfill Energy Systems
Nameplate8MWSummer 7 MW
Generators4in service
Net generation40GWh12 mo to Jul 2026
Capacity factor64%other units, summer MW
Heat rate—thermal plants only
First online2014
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), other 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 | 3.5 | 42.5% | — |
| 2015 | 49.2 | 98.6% | — |
| 2016 | 46.4 | 92.7% | — |
| 2017 | 45.9 | 91.9% | — |
| 2018 | 45.4 | 90.9% | — |
| 2019 | 45.8 | 91.6% | — |
| 2020 | 46.5 | 91.1% | — |
| 2021 | 59.1 | 95.0% | — |
| 2022 | 51 | 82.0% | — |
| 2023 | 53.4 | 85.9% | — |
| 2024 | 38.4 | 61.6% | — |
| 2025 | 40.5 | 65.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| ZE#4 | Landfill Gas | IC | 1.6 | 1.4 | Dec 2020 | Operating | — | coming soon |
| ZE-#1 | Landfill Gas | IC | 2 | 1.9 | Nov 2014 | Operating | — | coming soon |
| ZE-#2 | Landfill Gas | IC | 2 | 1.9 | Nov 2014 | Operating | — | coming soon |
| ZE-#3 | Landfill Gas | IC | 2 | 1.9 | Nov 2014 | Operating | — | coming soon |
Owner / operator
Operator: Landfill Energy Systems. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Landfill Energy Systems | 100.0% | 8 MW |
Nearby plants
Within 80 km.
| Bremen | 7 MW | 26 km |
| Prairie View I & II LFGTE | 6 MW | 29.2 km |
| Walkerton | 1 MW | 31.5 km |
| Mammoth North Solar | 400 MW | 32.7 km |
| IMPA Winamac Solar Park | 3 MW | 34.3 km |
| Mammoth South Solar Project | — | 40.5 km |