Assembly Solar II LLC
Solar power plant in Shiawassee County, Michigan. 110 MW of nameplate capacity across 1 generator, operated by Assembly Solar II LLC.
Also known as Assembly Solar II, LLC · EIA plant 63538
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 110 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2021First generator online
- Operator
- Assembly Solar II LLCEIA operator ID 63253
- Grid
- MISOBalancing authority MISO
- Price nodes
- 2 MISO nodesResource nodes with prices
- Location
- Shiawassee County, MI43.0437, −83.9600
- EIA plant ID
- 63538EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Assembly Solar II produces
Free · EIA-923Net generation, 2025
226 GWh
225,905 MWh, final
Capacity factor, 2025
23.4%
2024: 23.2%
January to July 2026
142 GWh
Provisional
Range, 2022 to 2025
221.0–226.2
GWh a year. Low 2023, high 2022
| 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 | Not reported | Not reported | 0 of 12 |
| 2021 | 6,135 | Not reported | 1 of 12 |
| 2022 | 226,189 | 23.5% | 12 of 12 |
| 2023 | 221,010 | 22.9% | 12 of 12 |
| 2024 | 224,233 | 23.2% | 12 of 12 |
| 2025 | 225,905 | 23.4% | 12 of 12 |
| 2026 (provisional, partial year) | 142,303 | 25.4% | 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 |
|---|---|---|---|
| AS2 | Solar Photovoltaic | 110.0 | December 2021 |
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 II 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 II
How much power does Assembly Solar II LLC produce?
Assembly Solar II LLC reported 225,905 MWh (226 GWh) of net generation in 2025, a 23.4% capacity factor on 110 MW of nameplate capacity. From January to July 2026 it reported 142 GWh, which is provisional.
Where is Assembly Solar II LLC?
Assembly Solar II LLC is in Shiawassee County, Michigan, at 43.0437, −83.9600. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Assembly Solar II LLC?
EIA-860M for August 2026 lists Assembly Solar II LLC as the operator (EIA operator ID 63253). The operator is not always the owner.
When did Assembly Solar II LLC start operating?
Its first generator began operating in December 2021, according to EIA-860M.
Does InfraMap have power prices for Assembly Solar II LLC?
Yes. InfraMap has MISO day-ahead and real-time prices at 2 price nodes linked to Assembly Solar II LLC, 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
- Project names from the USGS U.S. Large-Scale Solar Photovoltaic Database
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page