# Stevenson Generating Station

ISO-NE asset profile · https://askthegrid.com/assets/facilities/stevenson-generating-station

FirstLight Hydro Generating Company - Fairfield County - ISONE

Stevenson Dam is a conventional hydroelectric plant with four operating generating units and a combined nameplate capacity of 30.5 MW in Fairfield County, Connecticut. The plant sits on the Housatonic River at the boundary of Monroe and Oxford, where its dam impounds Lake Zoar, one of the state's largest lakes. Construction began in 1917 and the plant entered service in 1919 under a predecessor of what is now Eversource, with a fourth turbine added later to reach today's capacity. Stevenson is one of five developments of the Housatonic River Hydroelectric Project (FERC No. 2576), whose license was transferred in 2019 to FirstLight CT Housatonic LLC, part of the FirstLight Power portfolio that operates the plant. The project operates under a 40-year FERC license, with its shoreline management plan dating to 2013 and periodically updated since.

## Metrics

- **Nameplate capacity:** 30.5 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 553 — plant-553

## Facts

- **Technology:** Conventional Hydroelectric
- **Operator:** FirstLight Power Resources Services LLC

## Related parties

- **Operator:** FirstLight CT Housatonic LLC — NPDES permittee and FERC license-transfer applicant ([source](https://firstlight.energy/energy/stevenson-generating-station))
- **Former owner:** Energy Capital Partners — Portfolio acquirer and FirstLight creator ([source](https://www.ecpgp.com/equity/portfolio/firstlight-power-enterprises-inc))
- **Former owner:** GDF SUEZ / ENGIE Group — Portfolio buyer and predecessor owner
- **Acquirer:** Hull Street Energy, LLC — Proposed acquirer (pending regulatory approval) ([source](https://hullstreetenergy.com/blog/hull-street-energy-to-acquire-firstlights-u-s-generation-fleet))
- **Equipment supplier:** General Electric (GE / GE Vernova) — Turbine manufacturer

## Sources

- [ene.org](https://ene.org/project/firstlight-power-resources-management-llc-stevenson-hydroelectric-station) — ene.org · public_source — Source retained for exact-record publication review.
- [ferc.gov](https://ferc.gov/sites/default/files/2020-10/10-2020-H-4.pdf) — ferc.gov · authoritative — Source retained for exact-record publication review.
- [firstlight.energy](https://firstlight.energy/energy/stevenson-generating-station) — firstlight.energy · public_source — Source retained for exact-record publication review.
- [firstlight.energy](https://firstlight.energy/firstlight-power-and-energy-new-england-expand-landmark-power-purchase-agreement-to-advance-massachusetts-clean-energy-goals-for-municipal-utilities) — firstlight.energy · public_source — Source retained for exact-record publication review.
- [hullstreetenergy.com](https://hullstreetenergy.com/blog/hull-street-energy-to-acquire-firstlights-u-s-generation-fleet) — hullstreetenergy.com · public_source — Source retained for exact-record publication review.
- [npgallery.nps.gov](https://npgallery.nps.gov/NRHP/GetAsset/NRHP/00001073_text) — npgallery.nps.gov · authoritative — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/stevenson-generating-station
Website: [FirstLight CT Housatonic LLC](https://firstlight.energy/energy/stevenson-generating-station)

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