Assembly Solar III
Solar power plant · Shiawassee County, Michigan
Nameplate capacity
79 MW
Rank in Michigan
#70
of 289 plants
In service since
2022
January 2022
Details
- Primary fuel
- Solar
- Technology
- Solar Photovoltaic
- Operator
- Assembly Solar III, LLC
- County
- Shiawassee County
- Generating units
- 1
- Share of state capacity
- 0.22%
- Rank among solar plants in Michigan
- #17 of 76
- EIA plant code
- 64196
Generating units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| AS3 | Solar Photovoltaic | 79 MW | 79 MW | 2022 | Operating |
Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.
Similarly sized plants in Michigan
| Beebe 1A | Wind | 82 MW |
| Pine River Solar Park | Solar | 80 MW |
| Kalamazoo River Generating Station | Natural gas | 77 MW |
| Brookfield | Wind | 75 MW |
About this data
From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 79 MW solar plant and a 79 MW nuclear plant have the same entry here and produce very different amounts of electricity.
“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Michigan power plants · What Michigan actually generates