How much funding has Arbor raised?

Arbor has raised $55M in total funding. Key investors include Lowercarbon Capital; Voyager Ventures; Gigascale Capital; Marathon Petroleum Corporation; Cantos Ventures.

Who is the CEO of Arbor?

Brad Hartwig is the CEO of Arbor. The company was founded in 2022.

Where is Arbor located?

Arbor is headquartered in El Segundo, CA, USA.

What products does Arbor offer?

Arbor's key products include: Halcyon modular turbines.

What funding stage is Arbor at?

Arbor is currently at the Active stage.

How many employees does Arbor have?

Arbor has approximately 11-50 employees.

Arbor

Name: AM Companies Database
Creator: AMPulse
License: https://creativecommons.org/licenses/by/4.0/

HardwareEl Segundo, CA, USAFounded 2022· One of 1708 Hardware companies tracked by AMPulse

Develops modular, 3D-printed sCO2 power systems using rocket-derived turbomachinery for emissions-free baseload power.

CEO / Founder: Brad Hartwig
Team Size: 11-50
Stage: Active
Total Funding: $55M
Latest Round: Series A
Key Investors: Lowercarbon Capital; Voyager Ventures; Gigascale Capital; Marathon Petroleum Corporation; Cantos Ventures

Technology & Products

Key Products

Halcyon modular turbines

Technological Advantage

Additive manufacturing allows for high-efficiency impellers and compressors that bypass traditional supply chains and enable compact footprints.

Differentiation

Value Proposition

Provides carbon-negative, high-efficiency (25%+) baseload power by converting organic waste or fuels into electricity using compact, AM-enabled turbines.

How They Differentiate

Integration of rocket-derived additive manufacturing for turbine components, enabling higher efficiency and modularity compared to traditional sCO2 pilots.

Market & Competition

Target Customers

Data centers (hyperscalers), industrial operations, utilities

Industry Verticals

Energy; Tech Infrastructure; Data Centers

Competitors

GE Vernova; Echogen

Growth & Milestones

Growth Metrics

25 MW per unit; $1B order for 200 units (5 GW total) starting 2029; 25%+ efficiency via sCO2 tech.

Major Milestones

$1B order from GridMarket (2026); Series A funding round; Microsoft carbon removal credits deal; GW turbine production target by 2030

Notable Customers

Microsoft; GridMarket; Data Center Provider (undisclosed)

https://arbor.co

Why this company matters

Arbor develops modular power systems that use supercritical CO2 (sCO2) as a working fluid, with turbine cores produced via additive manufacturing. The company's approach applies rocket-engine turbomachinery design principles to stationary power generation, enabling higher efficiency and a smaller footprint than conventional sCO2 pilot plants. By leveraging metal AM for impellers and compressors, Arbor bypasses traditional casting and forging supply chains, which reduces lead times and allows iterative design optimization.

The company's Halcyon turbine modules are rated at 25 MW each and target baseload power applications for data centers, industrial operations, and utilities. Arbor claims 25%+ thermal efficiency and positions the systems as carbon-negative when fueled by organic waste or other biogenic feedstocks. A $1 billion order from GridMarket for 200 units (5 GW total) is scheduled to begin deliveries in 2029, with a production target of 1 GW per year by 2030.

Arbor has raised $55 million from investors including Lowercarbon Capital, Voyager Ventures, and Marathon Petroleum. The company has also secured a carbon removal credits agreement with Microsoft. Key competitors include GE Vernova and Echogen in the sCO2 power space, though Arbor differentiates through its additive-manufactured, rocket-derived turbine architecture. The company was founded in 2023 and is headquartered in El Segundo, California.