# Caithness Long Island Energy Center

NYISO power_plant · https://askthegrid.com/nyiso/assets/plant/caithness-long-island-energy-center

A natural-gas-fired combined-cycle power plant located at 50 Zorn Boulevard, Yaphank, Suffolk County, New York. The facility consists of two units with nameplate capacities of 196.2 MW and 152.7 MW, totaling 348.9 MW. Power output is primarily sold under a long-standing power purchase agreement with Long Island Power Authority. Lotus Infrastructure Partners, LP acquired 100% of the facility on January 7, 2026, and announced its intention to rename it Brookhaven Energy Center.

## Key facts

- Technology: Natural Gas Fired Combined Cycle
- Power capacity: 348.9 MW

## Grid and market context

- ISO/RTO: NYISO
- Balancing authority: NYISO

## Source-backed facts

- Operations.interconnection substation: LIPA Sills Road Switchyard — nerc.com · confidence: review_required
- Operations.nyiso zone: NYISO Zone K — lotusinfrastructure.com · confidence: review_required

## Timeline

- 2005-01-25 — CPCN petition filed
  Caithness Long Island, LLC filed a petition for a Certificate of Public Convenience and Necessity (CPCN) to develop, own, and operate an approximately 346 megawatt electric generating plant in the Town of Brookhaven, Suffolk County.
  Source: documents.dps.ny.gov (https://documents.dps.ny.gov/search/Home/ViewDoc/Find?id=%7B3D48C605-E1DA-45E8-BBC1-DA8F24C660FF%7D&ext=pdf&docTitle=Caithness%20Long%20Island%2C%20LLC%2C%20Order%20Granting%20a%20Certificate%20of%20Public%20Convenience%20and%20Necessity%2C%20Providing%20for%20Lightened%20Regulation%20and%20Approving%20Financing)
- 2025-09-10 — Acquisition agreement announced
  Lotus Infrastructure Partners and Caithness Energy announced a definitive agreement for Lotus to acquire 100% of the economic interests in Caithness Long Island Energy Center.
  Source: lotusinfrastructure.com (https://www.lotusinfrastructure.com/news/lotus-to-acquire-caithness-long-island-energy-center-from-caithness-energy/)
- 2026-01-07 — Acquisition closes; facility to be renamed Brookhaven Energy Center
  Lotus Infrastructure Partners, LP announced the closing of its acquisition of 100% of the economic interests in Caithness Long Island Energy Center from Caithness Energy, LLC. Following the closing, Lotus intends to rename the facility Brookhaven Energy Center.
  Source: lotusinfrastructure.com (https://www.lotusinfrastructure.com/news/lotus-closes-acquisition-of-the-caithness-long-island-energy-center)

## Sources

- [documents.dps.ny.gov](https://documents.dps.ny.gov/search/Home/ViewDoc/Find?id=%7B3D48C605-E1DA-45E8-BBC1-DA8F24C660FF%7D&ext=pdf&docTitle=Caithness%20Long%20Island%2C%20LLC%2C%20Order%20Granting%20a%20Certificate%20of%20Public%20Convenience%20and%20Necessity%2C%20Providing%20for%20Lightened%20Regulation%20and%20Approving%20Financing) — documents.dps.ny.gov · tier authoritative
- [epa.gov](https://www.epa.gov/sites/default/files/2020-05/documents/fact_sheet_caithness_long_island_llc_brookhaven_ny_.pdf) — epa.gov · tier authoritative
- [lotusinfrastructure.com](https://www.lotusinfrastructure.com/news/lotus-closes-acquisition-of-the-caithness-long-island-energy-center) — lotusinfrastructure.com · tier public_source
- [lotusinfrastructure.com](https://www.lotusinfrastructure.com/news/lotus-to-acquire-caithness-long-island-energy-center-from-caithness-energy/) — lotusinfrastructure.com · tier public_source
- [nerc.com](https://www.nerc.com/globalassets/our-work/reports/regional-audit-reports-of-registered-entities/npcc/2020/2016_public_npcc_caithness.pdf) — nerc.com · tier public_source

## Data quality

- The exact facility is distinguished from the separately proposed Caithness Long Island II project: CLI II was described as a proposed adjacent 750 MW plant, not an expansion already added to the existing facility. Capacity is reported inconsistently across sources: the EIA plant data lists a 196.2 MW generator record, Caithness's project page lists 350 MW, and Lotus's acquisition materials describe 365 MW. The supplied plant capacity of 348.9 MW is consistent with summing the EIA generator records (196.2 + 152.7 = 348.9 MW). The available evidence confirms original project-financing authorization (up to $495 million by PSC order in 2006) and the 2025–2026 ownership transfer, but does not disclose Lotus's purchase price or establish that the acquisition consideration was used to refinance or repay the plant's original project debt. No retirement or repowering of the existing Caithness Long Island Energy Center is established. References to retirement or repowering concern older Long Island plants in connection with the separate CLI II proposal. Caithness Long Island, LLC remains the EIA-listed utility operator as of the last dataset update (March 2026), reflecting the early stage of Lotus's ownership transition. Official announcements state that Lotus intends to rename the facility Brookhaven Energy Center following the January 7, 2026 closing. These refer to the same turbine model under different naming conventions; the SGT6-5000F is the current designation.

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