Here are ten active family offices from our database that are based in the USA and invest in energy, along with their websites:
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Blue Haven Initiative (Cambridge)
Blue Haven Initiative is the single family office of Liesel Pritzker Simmons and Ian Simmons, investing for impact across asset classes including venture. -
Proficio Capital Partners (Newton)
Proficio Capital Partners offers an institutional investment framework to its family office, investing alongside its family investors on the same terms 100% of the time. The firm employs an opportunistic approach to diversification, building a highly diversified, actively allocated combination of asset classes and securities using both internally and externally managed investment vehicles. -
Hilcorp Ventures (Houston)
Hilcorp Ventures is tied to Hilcorp Energy Company, founded in 1989 with the vision of becoming the premier independent energy company in America. It is now the largest privately owned oil and natural gas company in the country, built on core values of integrity, urgency, ownership, alignment and innovation. -
Winklevoss Capital (New York)
Winklevoss Capital backs determined entrepreneurs by providing guidance, relationships and capital to support their ventures. The firm focuses on founders it sees as combining acumen, artistry and audacity in pursuit of ambitious, high-risk goals. -
D'Orazio Holdings (Chicago)
D'Orazio Holdings invests in companies across aerospace and defense, automobiles and components, chemicals and coatings, building products, containers and packaging, construction materials, energy equipment and services, industrial services, machinery, precision machining, and professional services. -
Dorado Peak Capital (Orange County)
Dorado Peak Capital is a single family office investing in technology, oil and gas, minerals, water, real estate, ranching, farming, healthcare, and private equity. The family's roots trace to Galway, Ireland before settling in Texas, where its initial real estate investments in farming and ranching later expanded into oil, gas, mineral, and water rights. -
Gillon Capital (Dallas)
Gillon Capital is the family office of Heather Washburne, a fourth-generation descendant of H.L. Hunt, focused on building enduring businesses. It invests across all major asset classes with particular expertise in real estate, energy, financial services, and healthcare, and spun out from A.G. Hill Partners in April 2025. -
Merrick Capital (Texas)
Merrick Capital is a Houston-based private equity firm founded in 1979, focused on railcar transportation equipment, de novo banking, real estate, and oil and gas. Over more than forty years the firm has built a pipeline of long-term investment opportunities through strategic partnerships with equity partners, lenders, and management teams. -
MPK Equity Partners (Dallas)
MPK Equity Partners is a Dallas-based family office firm that acquires growing, profitable companies across the United States. Its target sectors span aviation, aerospace, consumer, retail, education services, energy, healthcare services, technology, insurance, financial services, specialty distribution, logistics, specialty manufacturing, and tech-enabled business services. -
Reign Capital Holdings (Oklahoma City)
Reign Capital Holdings is an Oklahoma City-based family office that invests in early- and late-stage companies. The firm focuses on the oil and gas, real estate, and private investment sectors.
For more information and listings of active family offices: