ArcLight Capital Partners announced that it will acquire InfraBridge’s 50% ownership of the 5.4‑GW Invenergy AMPCI Thermal Power (IATP) portfolio, giving ArcLight full control of the assets while InfraBridge retains the remaining half of the partnership. The transaction was disclosed on March 12, 2026 and is expected to close in the second half of 2026.
The IATP portfolio consists of 11 thermal power facilities spread across the United States and Canada, with a combined capacity of 5.4 GW. Key sites include the Grays Harbor Energy Center in Washington, the Nelson Energy Center in Illinois, the Lackawanna Energy Center in Pennsylvania, and the St. Clair Energy Centre in Ontario. Invenergy will continue to operate the facilities and maintain its existing ownership interest, ensuring operational continuity for the portfolio’s long‑term contracts.
The deal aligns with DigitalBridge’s strategy to sharpen its focus on digital‑infrastructure assets while divesting non‑core power holdings. InfraBridge, a division of DigitalBridge, is selling its stake to free capital for investments in data centers, fiber, and cell‑tower assets. ArcLight, which has recently acquired Advanced Power and committed significant equity to new power projects, sees the IATP portfolio as a high‑quality, contracted asset that can support the growing power demand of AI and data‑center deployments across North America.
Financial terms of the transaction were not disclosed, but the move is part of a broader trend of power‑infrastructure consolidation driven by the electrification of the economy and the need for reliable, low‑cost power for AI workloads. The expected closing in the second half of 2026 reflects the regulatory and contractual review required for a portfolio of this size.
Sadiq Malik, Managing Director of InfraBridge, said the sale “reflects InfraBridge’s disciplined investment approach and our continued focus on delivering strong outcomes for our investors.” Andrew Brannan, Managing Director at ArcLight, added that the IATP portfolio “provides significant, low‑cost power across seven markets” and will help ArcLight “drive value from the portfolio and continue to provide grid reliability.” Angelo Acconcia, President of ArcLight, noted that “strategic power portfolios like IATP will play an increasingly critical role in meeting the power demand needs driven by AI and electrification.”
The transaction underscores the accelerating demand for power infrastructure to support AI, data‑center growth, and broader electrification trends. ArcLight’s acquisition of the IATP portfolio strengthens its position as a leading investor in critical electrification assets, while DigitalBridge’s divestiture signals a continued shift toward digital‑infrastructure investments. The deal is expected to enhance the long‑term value of both companies’ portfolios and position them to capture the growing power needs of the technology sector.
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