Energy Startups
5,749 companies tagged Energy, with their investors and founders.
Crusoe builds energy-first AI infrastructure, using innovative and renewable energy sources to power hyperscale AI factories and a cloud platform for AI workloads. The company serves customers building and deploying AI applications at scale.
59 investors
Aalo develops advanced nuclear reactor technology aimed at producing electricity at under 3 cents per kilowatt-hour. The company serves the global energy market and is focused on enabling virtually unlimited clean power generation.
37 investors
Commonwealth Fusion Systems develops commercial fusion power plants using high-temperature superconducting magnet technology to provide grid-scale energy.
31 investors
Base Power provides residential battery systems and retail electric provider services to customers in Texas. The company develops battery storage solutions certified under UL safety standards and offers electricity supply services through its licensed retail electric provider operations.
29 investors
Gecko Robotics builds robots equipped with sensors and cameras to inspect industrial structures like boilers for structural defects, replacing dangerous manual inspections at height. The company serves industrial facilities that need to inspect large equipment and infrastructure.
27 investors
Blockdaemon provides blockchain infrastructure services including staking, node deployment, APIs, and wallet management across 60+ protocols for financial institutions and developers. The company serves institutional customers globally with secure, scalable access to blockchain networks.
25 investors
Radiant Nuclear develops Kaleidos, a portable nuclear microreactor designed to replace diesel generators for remote locations and provide resilient backup power to hospitals, datacenters, and military installations.
24 investors
Redwood Materials deploys large-scale energy storage systems for data centers and grid power while recycling batteries to recover critical minerals like lithium, nickel, cobalt, and copper as a domestic source of these materials.
22 investors
Valar Atomics is developing and scaling high-temperature gas nuclear reactors for grid-independent applications including hydrogen production, data center power, and clean hydrocarbon fuel production.
21 investors
Zeno develops nuclear batteries that convert heat from decaying radioisotopes into electricity for extended-duration applications in space and deep-sea environments where conventional power sources are inadequate. The batteries are designed for frontier missions requiring reliable power without refueling or maintenance for years.
21 investors
Arcadia is an energy intelligence platform that helps businesses manage utility bills, procure energy, and track sustainability through a single interface. The company serves Fortune 2000 enterprises with multiple locations and significant energy spending.
19 investors
Apollo Atomics develops compact nuclear power systems designed for rapid deployment. The company builds power-dense reactors intended for commercial electricity generation.
17 investors
BigID is a data security platform that discovers, classifies, and governs enterprise data across cloud, SaaS, and unstructured environments to enable privacy, security, and compliance. It serves enterprises managing data privacy, security, and governance requirements.
17 investors
Panthalassa is building a planetary-scale clean energy platform designed to meet global energy demand through offshore deployment with zero emissions at ultra-low cost.
17 investors
Antares Industries develops nuclear reactor technology, with teams spanning nuclear, reactor hardware, and mission engineering as well as manufacturing and regulatory operations. The company works in the nuclear energy and deeptech sector.
16 investors
Esusu is an economic mobility platform that helps working families build credit and strengthen financial stability through rent payment reporting. The company targets low-income renters and aims to bridge the racial wealth gap by addressing housing barriers.
16 investors
Fervo Energy develops next-generation geothermal technology using advanced drilling and sensing techniques to unlock carbon-free, 24/7 power generation in previously uneconomic locations.
16 investors
Form Energy develops and manufactures low-cost, multi-day iron-air battery systems for long-duration energy storage on the electric grid, serving utilities and project developers primarily in the United States. Founded in 2017, it has begun expanding internationally with its first project in Ireland.
16 investors
Phoenix Tailings develops clean technology for rare earth element refining in the United States. The company operates across the full value chain, from mining and recycling to separation and magnet production.
16 investors
Antora manufactures thermal battery systems for long-duration energy storage, serving manufacturers and data centers seeking to tap into low-cost renewable power. The company designs and produces American-made thermal batteries at scale to provide affordable, reliable energy storage for industrial and large-scale energy users.
15 investors
Cowboy Space builds a satellite constellation system that provides power and compute infrastructure in low Earth orbit to serve artificial intelligence applications. The integrated system uses solar power harvested in orbit to run GPU data centers, addressing power grid constraints limiting AI infrastructure expansion on Earth.
15 investors
Exowatt builds modular clean energy infrastructure systems designed for 24/7 solar power generation, targeting global AI infrastructure and critical industries that require reliable, ultra-low-cost sustainable power. The company manufactures its systems in the United States.
15 investors
Gridware provides real-time monitoring and visibility of electrical grid conditions through sensors deployed on power lines, enabling utilities and line workers to detect and respond to problems faster. The platform serves electric utilities and their field teams to improve grid reliability, reduce outage response time, and prevent wildfire ignition.
15 investors
Omnidian provides post-installation care and performance protection for solar and clean energy investments, focusing on the service experience after systems are installed. It serves solar system owners and clients seeking to protect and maintain their clean energy assets.
15 investors
















