M&AClosedJanuary 7, 2026

Calpine Corporation — 27 GW natural gas + geothermal fleet, creating 55 GW combined company

Constellation acquires Calpine in cash-and-stock deal (50M shares + $4.5B cash). Creates nation's largest power producer at 55 GW. FERC required divestiture of ~3.5 GW in PJM. Assumed ~$12.7B net debt.

$26.60B

Deal Value

27,000MW

Capacity

Other

Technology

Multi-state

Location

Deal Details

Deal Type
Corporate
Seller / Sponsor
Energy Capital Partners, Access Industries, CPP Investments
Buyer / Financier
Constellation Energy
Deal Value
$26.6B (stock + cash)
Stage
Operating
ISO/RTO
Multiple

Service Providers

Advisory & Legal

Seller Counsel
Latham & Watkins, White & Case
Buyer Counsel
Kirkland & Ellis
Seller Financial Advisor
Evercore, Morgan Stanley, Goldman Sachs, Barclays
Buyer Financial Advisor
Lazard, JP Morgan

Related Deals

Get deals like this in your inbox

Free weekly clean energy deal intelligence. Every Monday.

← Back to Deal Database