ArcLight Capital Partners to acquire InfraBridge’s 50% stake in Invenergy AMPCI Thermal Power (IATP)

ArcLight Capital Partners is set to acquire InfraBridge’s 50% stake in Invenergy AMPCI Thermal Power (IATP), gaining a substantial 5.4GW North American power generation portfolio. This acquisition provides ArcLight with a unique, diversified, large-scale portfolio of 11 operating power infrastructure assets, including combined cycle plants such as the Grays Harbor Energy Centre in Washington and the St. Clair Energy Centre in Ontario. The portfolio delivers low-cost power across seven markets, aligning with ArcLight's focus on energy and infrastructure investments. Invenergy will retain its ownership interest and continue to manage the operations of these assets, ensuring operational continuity for the portfolio, which also includes the Lackawanna Energy Centre in Pennsylvania and Nelson Energy Centre in Illinois. The deal, announced on March 13, 2026, is subject to regulatory approvals, with completion anticipated in the second half of 2026. For ArcLight Capital Partners, this acquisition deepens its exposure to operating gas-fired power assets, consistent with its mandate to target investments across the energy value chain. InfraBridge exits its 50% position in IATP, while Invenergy, a leading global developer and operator of sustainable energy solutions, maintains its role as a key partner in the 5.4GW portfolio. The transaction saw BofA Securities advise InfraBridge on the sale, leveraging its M&A advisory and project finance expertise. Morgan Stanley & Co., with its dedicated infrastructure investment platform, advised ArcLight Capital Partners on the buy-side, facilitating the acquisition of these North American assets.