Assembly Solar Project
Solar power plant in Shiawassee County, Michigan. 50 MW of nameplate capacity across 1 generator, operated by Assembly Solar I, LLC.
Also known as EIA plant 62422
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 50 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2020First generator online
- Operator
- Assembly Solar I, LLCEIA operator ID 61949
- Grid
- MISOBalancing authority MISO
- Price nodes
- 2 MISO nodesResource nodes with prices
- Location
- Shiawassee County, MI43.0227, −83.9453
- EIA plant ID
- 62422EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Assembly Solar Project produces
Free · EIA-923Net generation, 2025
99.8 GWh
99,840 MWh, final
Capacity factor, 2025
22.8%
2024: 23.3%
January to July 2026
65.2 GWh
Provisional
Range, 2021 to 2025
99.8–102.3
GWh a year. Low 2025, high 2024
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | 1,599 | Not reported | 1 of 12 |
| 2021 | 101,807 | 23.2% | 12 of 12 |
| 2022 | 101,458 | 23.2% | 12 of 12 |
| 2023 | 100,015 | 22.8% | 12 of 12 |
| 2024 | 102,325 | 23.3% | 12 of 12 |
| 2025 | 99,840 | 22.8% | 12 of 12 |
| 2026 (provisional, partial year) | 65,178 | 25.6% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · MISOEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| ASP01 | Solar Photovoltaic | 50.0 | December 2020 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Assembly Solar I, LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Questions about Assembly Solar Project
How much power does Assembly Solar Project produce?
Assembly Solar Project reported 99,840 MWh (99.8 GWh) of net generation in 2025, a 22.8% capacity factor on 50 MW of nameplate capacity. From January to July 2026 it reported 65.2 GWh, which is provisional.
Where is Assembly Solar Project?
Assembly Solar Project is in Shiawassee County, Michigan, at 43.0227, −83.9453. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Assembly Solar Project?
EIA-860M for August 2026 lists Assembly Solar I, LLC as the operator (EIA operator ID 61949). The operator is not always the owner.
When did Assembly Solar Project start operating?
Its first generator began operating in December 2020, according to EIA-860M.
Does InfraMap have power prices for Assembly Solar Project?
Yes. InfraMap has MISO day-ahead and real-time prices at 2 price nodes linked to Assembly Solar Project, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- MISO day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page