# Newington Energy Center

ISO-NE asset profile · https://askthegrid.com/assets/facilities/newington-energy-center

Essential Power Newington, LLC - Rockingham County - ISONE

Newington Energy Center is a 605.5 MW nameplate natural-gas-fired combined-cycle facility located at 200 Shattuck Way in Newington, Rockingham County, New Hampshire. The facility entered commercial service in October 2002 and consists of two General Electric GE Frame 7FA combustion turbines (each rated 185.6 MW nameplate), two heat-recovery steam generators, and one steam turbine (rated 234.3 MW nameplate) in a 2×1 combined-cycle configuration. The facility is dual-fuel, with natural gas as primary fuel and ultra-low-sulfur diesel as secondary fuel, and can switch between fuels during operation. It includes selective catalytic reduction (SCR) and dry-low-NOx combustion controls for emissions management, and can operate in supplemental duct-burner firing mode.

## Metrics

- **Nameplate capacity:** 605.5 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 55661 — plant-55661

## Facts

- **Technology:** Natural Gas Fired Combined Cycle
- **Operator:** Essential Power Operating Services, LLC

## Related parties

- **Parent company:** Vistra Corp. — Ultimate upstream owner; publicly traded integrated retail electricity and power generation company ([source](https://www.vistracorp.com))
- **Former owner:** Consolidated Edison Development, Inc. — Predecessor owner; sold interest to North American Energy Alliance ([source](https://www.conedison.com))
- **Former owner:** North American Energy Alliance, LLC — 2008 acquirer; held ownership through subsequent entity name changes
- **Former owner:** Nautilus Generation, LLC — Owner 2016-2024; transferred to Q-Generation
- **Former owner:** Q-Generation Holdings, LLC — Upstream owner 2024-2026; transferred to Vistra
- **O&M provider / equipment supplier:** General Electric International, Inc. / GE Power — Gas-turbine and steam-turbine equipment supplier; long-term maintenance provider ([source](https://www.ge.com))
- **Construction contractor:** Frank Lill & Son — Construction mechanical contractor ([source](https://www.franklillandson.com))
- **EPC contractor:** Duke/Fluor Daniel — Engineering, procurement, and construction contractor
- **Equipment supplier:** Foster Wheeler / Amec Foster Wheeler — HRSG and steam-boiler equipment supplier

## Sources

- [bhifw.com](http://www.bhifw.com/eng/main/main.html) — bhifw.com · public_source — Source retained for exact-record publication review.
- [conedison.gcs-web.com](https://conedison.gcs-web.com/static-files/8e5215d2-58de-4070-bfba-bbbab58e004f) — conedison.gcs-web.com · public_source — Source retained for exact-record publication review.
- [franklillandson.com](https://www.franklillandson.com/app-projects/newington-energy-center) — franklillandson.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/newington-energy-center

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