BASED IN DUXBURY, MA 02332
We invest in founders.
An early-stage firm backing founders building hard technology — in energy, flight, and health.
Portfolio
Companies
The companies we’ve backed, by focus area.
Commonwealth Fusion Systems
The world's first commercial nuclear fusion power plant.
Blue Energy
Advanced modular nuclear reactor technology.
Evoloh
Large-scale, clean hydrogen production.
Base Power
Affordable home power and backup.
Euclid
Enabling rapid deployment of solar and energy storage.
REON
Intelligent energy storage for the grid.
Beta Technologies
Electric vertical takeoff and landing aircraft.
Electra.aero
Air travel without airports, emissions or noise.
Verdego Aero
Hybrid-electric powertrains for sustainable aviation.
Phoenix Tailings
Sustainable rare metal mining technologies.
Sora Fuel
Sustainable aviation fuel.
Ocean Aero
Autonomous underwater vehicle.
Panthalassa
Open-ocean renewable energy.
Wattch
Critical APIs for the increasingly distributed power grid.
Acelerex
SaaS for planning and operating distributed energy assets.
Cala
Intelligent, connected heat pump water heater.
Pellucere
Advanced Optical Coatings for Energy and Industry.
Verde Technologies
Next-gen approach to solar panels using Perovskites.
Ingu
Cutting-edge sensors and software for pipeline inspection.
Odyssey Energy Solutions
Unleashing the distributed renewable energy revolution.
Positron AI
Purpose-built hardware for AI inference.
Jolt Energy
Ultra-fast electric vehicle charging stations.
Flux Marine
Fully electric outboard engines for boats.
Puloli
SaaS for methane monitoring.
Freenome
Early cancer detection.
Valora Therapeutics
A new approach to immunotherapy.
Lytica Therapeutics
Novel peptide therapeutics.
Biolinq
Wearable for blood information.
Core by Hyperice
Handheld device and content app for meditation.