The round was co-led by Lowercarbon Capital and Voyager Ventures, with participation from Gigascale Capital and Marathon Petroleum Corporation. The funding will enable the completion of Arbor's 1 megawatt (MW) technology pilot, ATLAS, and support development of its 25 MW commercial product, HALCYON.

Arbor Energy builds clean, baseload power systems for the world's most energy-intensive industries. The company's HALCYON turbine leverages advancements in oxy-combustion and sCO2 technology to deliver scalable, fuel-flexible baseload power with zero operating emissions.