Our Companies

Whether in energy, transportation or industrials, Fortistar companies maintain a shared focus on sustainability and superior performance. Our companies create opportunity for partners and communities.

Opal Technologies Logo

OPAL Fuels LLC is an emerging leader in the production and distribution of renewable natural gas (RNG), a proven low carbon  fuel with a decades-long track record of results that has the power to rapidly decarbonize the transportation industry. OPAL captures harmful methane emissions at the source and recycles the trapped energy into a commercially-viable, low-cost alternative to diesel fuel. As a vertically-integrated producer and distributor of RNG for heavy-duty truck fleets for over 20 years, OPAL delivers best-in-class, complete renewable solutions to customers and production partners.

Ambri Inc. Ambri Inc. has developed and is commercializing a new, long-duration battery technology that will enable widespread use of renewable energy sources, reduce electricity costs, and enable power systems to operate more reliably and efficiently. The liquid metal battery project began at MIT in the lab of Professor Donald Sadoway, and the company was formed in 2010 when the project achieved significant technical breakthroughs.

Breakthrough Technologies Boston-based Breakthrough Technologies is led by a world-class engineering team managed by one of Massachusetts Institute of Technology’s brightest engineers. Unlike any other sustainable technology company, Breakthrough Technologies’ engineers utilize the principles of physics to solve sustainability issues associated with industrial processes. This unique approach ultimately leads to chemical-less, cleaner and cost-saving sustainable solutions.

Pellucere Technologies, Inc. is a U.S.-based sustainable technology focused company that manufactures anti-reflective and anti-soiling coatings for solar, automotive, and consumer electronics. Pellucere’s flagship product is the MoreSun® Anti-Reflective (AR) / Anti-Soiling (AS) coating for the solar market.

BayoTech is a hydrogen generation technology company committed to addressing the need for consistent, cost-effective supply of low-/zero-carbon hydrogen. The company offers modular, scalable and rapidly deployable hydrogen production systems through sales, rentals, leases and gas-as-a-service to customers worldwide.

Trustar Energy is a leading designer and developer of CNG fueling stations to displace diesel as a transportation fuel in the United States. The company offers a complete range of fully integrated construction, service and fuel sales.

Braven Environmental is an industry leader in environmental solutions that eliminate the growing problem of waste plastics. Keeping these hazards out of landfills, oceans and waterways, Braven produces feedstock, commercial fuel, or generates electricity for turbines from waste plastics.

Carbonfree Chemicals uses proprietary technology to capture carbon emissions and other pollutants from industrial and power plants to create green products such as baking soda, hydrochloric acid and bleach.

Clock.In is an innovative leader in information management for mobile companies and workforces. Across multiple platforms, it offers a complete set of employee, delivery and decision support tools.

Generational Power is a leader in creating both heat and power through cogeneration, and where Fortistar started. Its track record of operational performance, greater production capacity and superior economic returns has translated into added power, jobs and profits.