Syncarpha Millbury Hybrid (CSG)
Solar and battery storage project in Worcester County, Massachusetts. 8.8 MW of nameplate capacity across 2 generators, operated by Syncarpha Millbury, LLC.
Also known as EIA plant 62974
This project groups Syncarpha Millbury Hybrid (CSG) (EIA 62974). EIA reports them as separate plants.
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 8.8 MWSolar 5.0 · Battery storage 3.8
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- October 2022First generator online
- Operator
- Syncarpha Millbury, LLCEIA operator ID 62820
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Worcester County, MA42.1752, −71.7930
- EIA plant ID
- 62974EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Syncarpha Millbury Hybrid (CSG) produces
Free · EIA-923Net generation, 2025
8.05 GWh
8,045 MWh, final
Capacity factor, 2025
18.8%
2024: 18.0%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2024 to 2025
7.9–8.0
GWh a year. Low 2024, high 2025
| 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 | Not reported | Not reported | 0 of 12 |
| 2022 | 1,085 | 8.5% | 3 of 12 |
| 2023 | 7,575 | Not reported | 11 of 12 |
| 2024 | 7,888 | 18.0% | 12 of 12 |
| 2025 | 8,045 | 18.8% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 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 · ISONEEmissions
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 |
|---|---|---|---|
| SYMIB | Batteries | 3.8 | February 2023 |
| SYMIS | Solar Photovoltaic | 5.0 | October 2022 |
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 Syncarpha Millbury, 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 Syncarpha Millbury Hybrid (CSG)
How much power does Syncarpha Millbury Hybrid (CSG) produce?
Syncarpha Millbury Hybrid (CSG) reported 8,045 MWh (8.05 GWh) of net generation in 2025, a 18.8% capacity factor on 8.8 MW of nameplate capacity.
Where is Syncarpha Millbury Hybrid (CSG)?
Syncarpha Millbury Hybrid (CSG) is in Worcester County, Massachusetts, at 42.1752, −71.7930. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Syncarpha Millbury Hybrid (CSG)?
EIA-860M for August 2026 lists Syncarpha Millbury, LLC as the operator (EIA operator ID 62820). The operator is not always the owner.
Is Syncarpha Millbury Hybrid (CSG) a solar or a battery storage plant?
Both. Solar capacity totals 5 MW and battery storage capacity totals 3.8 MW.
When did Syncarpha Millbury Hybrid (CSG) start operating?
Its first generator began operating in October 2022, according to EIA-860M.
Does InfraMap have power prices for Syncarpha Millbury Hybrid (CSG)?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Syncarpha Millbury Hybrid (CSG), 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)
- ISONE 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