# Pittsfield Generating LP

ISO-NE asset profile · https://askthegrid.com/assets/facilities/pittsfield-generating-lp

Pittsfield Generating Company, LP - Berkshire County - ISONE

Pittsfield Generating is a 175.5 MW natural gas-fired combined-cycle power plant in Pittsfield, Berkshire County, Massachusetts. Built originally as the Altresco Pittsfield cogeneration facility, the plant is now owned by the private-equity firm Hull Street Energy, LLC and operated day-to-day by Pittsfield Generating Company, LP. It runs almost exclusively as a peaking unit, dispatched only in periods of high regional electricity demand; its capacity factor fell to about 1.3% in 2023 before rising again in 2024. In 2025 the facility recorded hourly nitrogen oxide and ammonia emissions deviations that drew a Massachusetts DEP penalty, part of a broader pattern of Clean Air Act compliance issues at the site.

## Metrics

- **Nameplate capacity:** 175.5 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 50002 — plant-50002

## Facts

- **Technology:** Natural Gas Fired Combined Cycle
- **Operator:** Pittsfield Generating Company, LP

## Related parties

- **Owner / operator / asset manager:** Milepost Power Holdings — current portfolio owner and operator ([source](https://www.milepostpower.com/home))
- **Parent company:** Hull Street Energy, LLC — ultimate parent company ([source](https://hullstreetenergy.com))
- **Former owner:** Maxim Power Corp. — predecessor owner (2008–2017)
- **Former owner:** GE Energy Financial Services — seller in 2008 transaction ([source](https://www.ge.com/energy))
- **Financier:** Altresco Financial, Inc. — project developer and financing arranger

## Sources

- [mergr.com](https://mergr.com/transaction/maxim-power-acquires-pittsfield-generating-co) — mergr.com · public_source — Source retained for exact-record publication review.
- [berkshireeagle.com](https://www.berkshireeagle.com/news/central_berkshires/pittsfield-aims-replace-peaker-plant-battery-system/article_0c50f486-8d2b-4141-a232-26045dccbc9a.html) — berkshireeagle.com · public_source — Source retained for exact-record publication review.
- [epa.gov](https://www.epa.gov/sites/default/files/2015-06/documents/pittsfield.pdf) — epa.gov · authoritative — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/pittsfield-generating-lp

Source: Ask the Grid — https://askthegrid.com/