Arbor secured a $55 million Series A round, co-led by Lowercarbon Capital and Voyager Ventures, with participation from Gigascale Capital, Marathon Petroleum Corporation, Cantos Ventures, and others. The funding accelerates development of next-generation turbines designed to overcome supply chain bottlenecks and provide clean, reliable baseload power for growing global energy demand.
The investment supports completion of the 1 MW ATLAS pilot and advancement of HALCYON, a 25 MW supercritical CO₂ (sCO₂) power system. The first HALCYON turbine is expected by 2028, with gigawatt-scale production targeted by 2030.
HALCYON combines oxy-combustion for zero emissions with sCO₂ technology for higher efficiency, compact design, and lower cost. Using 3D printing, the modular turbines scale from 25 MW to over 1 GW, offering fast deployment, flexible fuel options, and a sustainable alternative for utilities, hyperscalers, and industries.
“The AI revolution demands unprecedented amounts of clean, reliable power, and Arbor delivers exactly that,” said Sarah Sclarsic, Founding and Managing Partner at Voyager Ventures. “Arbor’s modular gas turbines provide the baseload capacity that data centers need, with the speed and flexibility that traditional infrastructure simply can’t match. And best of all, they’re made in America, low-cost, and are the first zero-emission combustion turbines on the market.”
“We have a massive opportunity to deliver abundant, clean, and reliable power that keeps pace with today’s industries,” said Brad Hartwig, CEO and co-founder of Arbor. “This funding lets us move quickly from tech pilot to commercial deployment and shows how modular, zero-emission turbines like HALCYON can solve the greatest energy challenges faced by businesses today.”
Arbor aims to provide flexible, carbon-neutral energy solutions by enabling HALCYON to run on fuels like natural gas or biomass, with the potential for carbon-negative performance. The company continues to advance technology that balances industrial growth with environmental sustainability.