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acquisitionAnnounced · Jan 9, 2026UtilitiesSource · CredibleArticle · Factual
Constellation acquires Calpine
David Najork · Founding Software Engineer
Announced · Updated · 1 min read
Deal value
$26.6B
Target
Calpine
Houston, Texas
Acquirer
Constellation
Full Acquisition
Status
Completed
Constellation agreed to acquire Calpine. Reported deal value: $26.6B. Status: Completed. Sector: Utilities. Target headquarters context: Houston, Texas, United States.
This page summarizes publicly available information about the transaction as of 2026-01-09. Figures and status may change as filings and press coverage update.
Major U.S. utility Constellation said it has completed its acquisition of Calpine Corp . from Energy Capital Partners , creating the nation largest producer of electricity
Deal timeline
Announced
Jan 9, 2026 · powermag.com
Additional milestones (proxy, vote, close) appear as filings and press updates are indexed.
Sector context
This transaction is classified in Utilities with a reported deal value of $26.6B. Figures and status may change as sources update.
Sources: powermag.com · Primary article · FireStrike proprietary index