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pe firm

Energy Capital Partners

Energy-infra PE; sold Calpine to Constellation in $26.6B deal (2025) accelerating gas-for-AI.

Summit, NJ www.ecpgp.com

Owned / funded by

Capital and control flowing in

  • ADQ (Abu Dhabi)· joint venture$25.0B

    March 2025: $25B / 25 GW JV with Energy Capital Partners for US data-center power generation.

Owns / has invested in

Capital and control flowing out

  • Constellation Energy· acquired$26.6B

    Constellation acquiring Calpine from ECP for $26.6B (announced Jan 2025) — gas+geothermal scale.

  • Calpine· acquired$26.6B

    Acquired Calpine in 2018; sold to Constellation Energy in $26.6B deal (closed Jan 2026, $16.4B equity + $12.7B debt).

  • KKR & Co.· joint venture$50.0B

    $50B strategic partnership announced Oct 2024 to invest in data centers and power generation to support AI growth.

  • ADQ (Abu Dhabi)· joint venture$25.0B

    $25B partnership formed March 2025 to invest in US power generation and energy infrastructure for data centers / AI.

Data is editorial seed at this stage; relationships reflect public reporting and filings. Suggestions and corrections via GitHub.