Kearsarge William Way
Solar and battery storage project in Norfolk County, Massachusetts. 7 MW of nameplate capacity across 2 generators, operated by Kearsarge William Way LLC.
Also known as EIA plant 64617
This project groups Kearsarge William Way (EIA 64617). EIA reports them as separate plants.
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 7 MWSolar 4.4 · Battery storage 2.6
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- December 2021First generator online
- Operator
- Kearsarge William Way LLCEIA operator ID 64234
- Grid
- ISO-NEBalancing authority ISNE
- Price nodes
- 1 ISONE nodeResource nodes with prices
- Location
- Norfolk County, MA42.0819, −71.4925
- EIA plant ID
- 64617EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Kearsarge William Way produces
Free · EIA-923Net generation, 2025
7.31 GWh
7,306 MWh, final
Capacity factor, 2025
19.6%
2024: 19.8%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2022 to 2025
7.2–7.5
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 | 96 | Not reported | 1 of 12 |
| 2022 | 7,545 | 20.2% | 12 of 12 |
| 2023 | 7,207 | 19.4% | 12 of 12 |
| 2024 | 7,394 | 19.8% | 12 of 12 |
| 2025 | 7,306 | 19.6% | 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 |
|---|---|---|---|
| BWBAT | Batteries | 2.6 | December 2021 |
| BWW | Solar Photovoltaic | 4.4 | 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 Kearsarge William Way 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.
300 analyst questions a month, plus MCP
Query Kearsarge William Way and 14,224 other projects from Claude or your own tools. Free accounts get 1 question a day.
Power plants near Kearsarge William Way
Questions about Kearsarge William Way
How much power does Kearsarge William Way produce?
Kearsarge William Way reported 7,306 MWh (7.31 GWh) of net generation in 2025, a 19.6% capacity factor on 7 MW of nameplate capacity.
Where is Kearsarge William Way?
Kearsarge William Way is in Norfolk County, Massachusetts, at 42.0819, −71.4925. It is in the ISO New England Inc. balancing area (ISNE).
Who operates Kearsarge William Way?
EIA-860M for August 2026 lists Kearsarge William Way LLC as the operator (EIA operator ID 64234). The operator is not always the owner.
Is Kearsarge William Way a solar or a battery storage plant?
Both. Solar capacity totals 4.4 MW and battery storage capacity totals 2.6 MW.
When did Kearsarge William Way start operating?
Its first generator began operating in December 2021, according to EIA-860M.
Does InfraMap have power prices for Kearsarge William Way?
Yes. InfraMap has ISONE day-ahead and real-time prices at 1 price node linked to Kearsarge William Way, 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