Energy Private Equity Firms in North America

Greenbelt Capital Partners is a private equity firm founded in 2022 to invest in companies enabling the global transition toward cleaner, more resilient and electrified energy systems. Led by veterans Chris Manning and Glenn Jacobson, the Austin‑based firm targets middle‑market businesses in sectors such as grid modernization, power generation, industrial electrification, digital infrastructure and energy efficiency. Greenbelt closed its inaugural Greenbelt Capital Partners III fund at US$1 billion in June 2025, bringing total assets under management to roughly US$2.5 billion. The team has decades of experience, having collectively deployed more than US$6 billion of equity capital and executed over US$70 billion in transactions. Greenbelt’s investment approach blends operational support with capital, aiming to help portfolio companies scale sustainably and benefit from long‑term megatrends like decarbonization and electrification. The firm maintains offices in Austin and New York and counts pension funds, sovereign wealth funds and insurance companies among its limited partners. Greenbelt positions itself as a value‑driven partner, seeking commercially successful companies that also contribute to a more sustainable and reliable energy future.

HarbourVest Partners is a leading global private markets investment firm with over 42 years of experience. Founded in 1982 as Hancock Venture Partners, a subsidiary of John Hancock Insurance, the firm has evolved into an independent entity headquartered in Boston, Massachusetts. HarbourVest offers clients access to a comprehensive suite of private market solutions, including primary fund investments, secondary transactions, direct co-investments, real assets, infrastructure, and private credit. With a presence in major financial centers worldwide, HarbourVest operates offices in cities such as London, Tokyo, Singapore, and Bogotá. This global footprint enables the firm to maintain strong local relationships and insights, facilitating effective investment strategies across diverse markets. HarbourVest's team of over 1,300 professionals is dedicated to delivering customized investment solutions that meet the unique needs of their institutional clients. As of December 31, 2024, HarbourVest manages more than $143 billion in assets under management (AUM). The firm's client base includes a wide range of institutional investors, such as public and corporate pension funds, endowments, foundations, and family offices. HarbourVest's commitment to innovation and excellence has solidified its reputation as a trusted partner in the private equity landscape.

Rockland Capital is a private equity firm established in 2003 and headquartered in The Woodlands, Texas. The firm specializes in control investments in operating power plants and generation companies across the United States and the United Kingdom. Rockland Capital targets under-managed or option-rich assets that offer opportunities for repurposing or optimization, aiming to enhance flexibility and rapid-response capacity to address the demands of a stressed electric grid. The firm implements a hands-on approach typically involving operational optimization, commercial repositioning, and selective capital investment to modernize plants and create value through improved reliability services and participation in ancillary markets. Rockland focuses on making investments that deliver near-term reliability services and cash flow, primarily directing capital towards existing operating facilities. A portion of the capital may also be allocated to development and construction projects tailored for high-reliability customers, notably data centers requiring resilient power solutions. The investment strategy of Rockland Capital reflects a deep understanding of the energy sector's evolving needs, especially in the context of rising data center capacity, industrial reshoring, and the increasing penetration of renewable energy sources. These dynamics necessitate flexible, dispatchable power assets that are critical to complement intermittent renewable generation. Rockland Capital emphasizes long-standing relationships with a diverse range of institutional investors, including endowments, foundations, corporate and public pension plans, healthcare systems, insurance firms, consultants, family offices, and asset managers, all of which underscore the firm's credibility and appealing investment thesis within the energy infrastructure landscape.

Veritas Capital is a leading private equity firm founded in 1992 and headquartered in New York City. The firm focuses on investments in companies that provide critical products and services, particularly technology-enabled solutions for government and commercial clients. With a commitment to innovation and operational excellence, Veritas supports businesses at the nexus of technology and national interest. With over $50 billion in assets under management, Veritas Capital targets high-impact sectors such as aerospace and defense, healthcare, national security, energy, education, and communications. The firm has developed a strong reputation for its deep domain expertise and a collaborative investment approach that fosters long-term value creation. Veritas Capital partners with management teams to drive transformation, accelerate growth, and enhance performance. Their strategy is grounded in rigorous analysis, strategic insight, and active engagement, positioning their portfolio companies for sustained success in dynamic and highly regulated markets.