ArcLight Capital Partners

ArcLight Capital Partners is a middle-market infrastructure private equity firm that pioneered a private equity approach to investing in energy infrastructure, with a focus on the United States and select international markets. The firm concentrates on five core sectors — power generation, renewables, strategic gas, transformative infrastructure, and opportunistic energy infrastructure — targeting cash-generative real assets including electric power generation, transmission and storage, natural gas pipelines and storage, and wind, solar, hydroelectric, and battery storage facilities. ArcLight has committed more than $27 billion of capital across seven institutional funds since inception, pursuing control-oriented buyouts, recapitalizations, and growth capital investments in middle-market infrastructure assets where it holds sourcing, operational, and financing advantages. Transaction types include asset and platform acquisitions, corporate carve-outs, and joint development financings, with majority control as the standard ownership structure. ArcLight applies an operationally intensive investment approach, supported by dedicated in-house technical, operational, and commercial specialists alongside its approximately 2,000-person asset management affiliate, AlphaGen. The firm's geographic focus is primarily North America, with additional activity in Western Europe and Australia/New Zealand. Founded in 2001, the firm is headquartered in Boston, Massachusetts, United States, with an additional office in Luxembourg.