ArcLight Capital Partners agreed to acquire InfraBridge's 50% stake in Invenergy AMPCI Thermal Power, a North American portfolio of 11 power assets totalling about 5.4GW, the companies announced on 12 March.
Why ArcLight Capital Partners is buying Invenergy AMPCI Thermal Power (InfraBridge's 50% stake)
ArcLight president Angelo Acconcia said strategic power portfolios such as IATP would play an increasingly critical role in meeting demand driven by AI and electrification. ArcLight managing director Andrew Brannan said the portfolio provides significant low-cost contracted power across seven markets.
Deal terms and financing
Financial terms were not disclosed. Invenergy, North America's largest privately held independent power developer and operator, retains its existing ownership and operating role.
Regulatory approvals and timing
The transaction is subject to customary regulatory approvals and other closing conditions and is expected to close in the second half of 2026.
Market context
The portfolio includes Grays Harbor Energy Center in Washington, Nelson Energy Center in Illinois, Lackawanna Energy Center in Pennsylvania and St. Clair Energy Centre in Ontario. InfraBridge is the global infrastructure division of DigitalBridge Group.
