ArcLight Capital Partners LLC

ArcLight Capital Partners LLC is a private equity firm specializing in energy infrastructure investments. Founded in 2001, the firm has invested approximately $23 billion in 110 transactions, generating strong realized returns for its limited partners across diverse market cycles. Based in Boston, Massachusetts, ArcLight targets midstream, power, and production opportunities with substantial growth potential, significant current income, and meaningful downside protection, typically on a proprietary basis. The firm employs a hands-on value creation strategy that utilizes its in-house technical, operational, and commercial specialists, as well as its 1,500+ person asset management affiliate.

ArcLight's investment strategy is aligned with mega-trends defining the infrastructure landscape, including tightening power markets driven by electrification and data center demand growth, increasing renewables and battery storage penetration requiring more operationally intensive, market-oriented management, and the long-term role of natural gas transmission, storage, and LNG infrastructure in the transition. The firm focuses on assets critical to electrification and the digital economy, such as power infrastructure, renewable energy, and strategic gas infrastructure.

The firm's portfolio includes investments in various sectors, including hydropower, oil and gas infrastructure, power plants, and renewable energy projects. Notable investments include Great River Hydro, a conventional hydroelectric generation portfolio in New England totaling 589 MWs of capacity, and Infinigen Renewables, the largest solar and storage operator in Puerto Rico. ArcLight's approach combines deep asset-level knowledge with market experience to deliver superior returns across the energy industry value chain.