Arbor Energy, a clean power company developing advanced zero-emission turbines, announced it has raised $55 million in a Series A funding round co-led by Lowercarbon Capital and Voyager Ventures, with participation from Gigascale Capital and Marathon Petroleum Corporation.
The investment will fund the completion of Arbor’s 1-megawatt pilot system, ATLAS, and accelerate the development of its 25-megawatt commercial product, HALCYON.
Arbor Energy is tackling one of the most pressing challenges in the global energy market — delivering reliable, carbon-neutral power at scale as electricity demand surges due to AI data centers, electric transportation, and industrial decarbonization. Traditional turbine manufacturers are struggling to meet demand while maintaining low emissions. Arbor’s modular approach offers a faster, more flexible path to clean baseload power with greater scalability and lower costs.
The company’s HALCYON turbine is a compact, fuel-flexible system that combines oxy-combustion technology with supercritical CO₂ (sCO₂) cycles to achieve zero emissions and high efficiency. Each 25-megawatt unit can operate as a standalone generator or be stacked to form power plants exceeding one gigawatt of capacity. This modular design enables customers — from hyperscalers and utilities to industrial facilities — to add power incrementally as demand grows, reducing both capital risk and deployment timelines.
Arbor is also leveraging additive manufacturing to streamline production, minimize supply chain constraints, and reduce maintenance costs. The HALCYON turbines can run on multiple fuel types, including natural gas, syngas, and biomass. When operated on biomass, the system can even produce carbon-negative power, providing a unique advantage for sustainability-focused customers.
The company’s focus on the 25–100 megawatt range fills a critical gap in the power generation market. Legacy turbine OEMs have largely ignored this middle-capacity segment, yet it is essential for meeting the needs of rapidly scaling industries and regional utilities seeking distributed, redundant, and quickly deployable energy solutions. Arbor’s smaller systems can be manufactured and installed faster than large centralized plants, helping industries meet their power requirements without long lead times or overbuilt infrastructure.
By 2032, Arbor Energy aims to deploy more than 100 HALCYON turbines annually, representing over one gigawatt of new production capacity each year.
The company expects its systems to power AI data centers, industrial manufacturers, and utilities seeking to strengthen grid resilience with clean, modular baseload power.
KEY QUOTES:
“We have a massive opportunity to deliver abundant, clean, and reliable power that keeps pace with today’s industries. 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.”
Brad Hartwig, CEO and Co-Founder, Arbor Energy
“The AI revolution demands unprecedented amounts of clean, reliable power, and Arbor delivers exactly that. 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.”
Sarah Sclarsic, Founding and Managing Partner, Voyager Ventures
