Verified 10 Nov 2026
Fortistar
Fortistar is a privately owned investment firm in White Plains, New York, founded in 1993, that funds and manages companies addressing sustainability in energy, transportation and industrials. Its website lists OPAL Fuels and Epic Star Energy among its portfolio companies. In a December 2021 OPAL Fuels call transcript filed by ArcLight Clean Transition Corp. II, Fortistar is called a family office and private equity firm that would keep about 75% of OPAL Fuels.
- Type
- Single family office
- Location
- White Plains, New York, United States
- Sectors
- Private equity, Direct investments
- Latest fund or filing
- 26 Jan 2021
- Website
- www.fortistar.com
Notable investments
OPAL FuelsEpic Star Energy
Sources
- www.sec.gov/Archives/edgar/data/1842279/000119312521354280/d268282d425.htm
- www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1841238
- www.fortistar.com/
- www.fortistar.com/about-fortistar/
- www.fortistar.com/portfolio-companies/
Last checked 10 Nov 2026. Is something wrong? Tell us.
Appears in 9 lists
Family offices in New York (68)US family offices that invest in direct deals in private companies (90)US family offices that invest in private equity (111)Family offices in the Northeast (112)Family offices that invest in direct deals in private companies (143)Family offices that invest in private equity (177)Single family offices in the United States (288)Family offices in the United States (481)Single family offices (488)