Lake Iris Solar Project
St. Clair County, Michigan · EIA plant ID 66745 · Operator: Lake Iris Solar, LLC
Nameplate100MWSummer 100 MW
Generators1in service
Net generation20GWh12 mo to Aug 2026
Capacity factor27%solar units, summer MW
Heat rate—thermal plants only
First online2026
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.
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 |
|---|---|---|---|---|---|---|---|---|
| LIS1 | Solar Photovoltaic | PV | 100 | 100 | Aug 2026 | Operating | — | coming soon |
Owner / operator
Operator: Lake Iris Solar, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Lake Iris Solar, LLC | 100.0% | 100 MW |
Nearby plants
Within 80 km.
| Greenwood (MI) | 1,071 MW | 2.4 km |
| Greenwood Solar Farm | 1 MW | 2.4 km |
| Blue Water Renewables Inc | 3 MW | 20.2 km |
| MSC Croswell | 1 MW | 20.9 km |
| Croswell | 5 MW | 21.6 km |
| E.B. Eddy Paper Inc | 5 MW | 22.9 km |