Energy Startups
4,796 companies tagged Energy, with their investors and founders.
Prometheus Fuels develops systems that convert intermittent renewable energy into liquid fuels for remote electrification. The ULDES and Fuel Forge systems operate independently from the grid, storing energy as liquid fuels when renewable power is available.
6 investors
Quaise Energy develops superhot geothermal drilling technology using millimeter-wave powered drilling to access deep geothermal energy sources at unprecedented depths and temperatures for large-scale clean power generation globally.
6 investors
QuantumScape develops solid-state lithium-metal batteries with ceramic electrolyte separators for electric vehicles, enabling faster charging, longer range, and improved safety compared to conventional lithium-ion batteries. The company aims to accelerate the electrification of transportation and decarbonization through next-generation battery technology.
6 investors
Quilt makes a ductless heat pump system for residential heating and cooling, including indoor and outdoor units, a control dial, and an app with room-by-room temperature control and occupancy sensing. The all-electric system is sold to homeowners and installed through a certified partner network across North America.
6 investors
Reach develops wireless power beaming technology using AI-driven adaptive systems to transmit electricity over distance to devices and systems, similar to how Wi-Fi transmits data. The company serves applications including drones, autonomous systems, sensors, electric vehicles, and industrial equipment across defense, public safety, and critical infrastructure sectors.
6 investors
Renaissance Fusion builds stellaratorsβmagnetic-confinement fusion machinesβusing High Temperature Superconducting (HTS) magnets and liquid metal shields to enable clean energy generation. It is a continental European fusion startup working to industrialize its core technologies for real-world energy grid deployment.
6 investors
Sense provides energy management software and hardware that connects consumers and utilities through intelligent monitoring and insights. The company serves residential consumers and electricity providers to improve grid management and reduce energy consumption through home energy monitoring and smart meter integration.
6 investors
Sepion develops advanced polymer separator technology for batteries and other applications including water separation and materials recovery. The company commercializes research from Berkeley Lab with manufacturing and production capabilities in Silicon Valley.
6 investors
SimpliRoute provides route optimization and last-mile delivery software that helps companies plan and manage deliveries. Founded as a University of Chile research project, it serves logistics operations across Latin America and other markets.
6 investors
sonnen builds home energy systems centered on the sonnenBatterie storage unit, along with EV chargers, electricity tariffs, heat pump integration and an app for managing solar energy production and consumption. It serves residential customers in Germany and operates the sonnenVPP virtual power plant that lets battery owners help stabilize the grid.
6 investors
Sora Fuel produces sustainable aviation fuel (SAF) and diesel using a proprietary closed-loop direct air capture and conversion process that draws carbon from air rather than biomass or industrial feedstocks. It targets the aviation and transportation fuel market as an alternative to feedstock-dependent fuel production.
6 investors
SparkCharge develops mobile off-grid electric vehicle chargers and operates a charging network for EV users. The company focuses on making EV charging more accessible and reducing carbon emissions in the mobility sector.
6 investors
Sunrun provides residential solar panels and battery storage systems to homeowners, offering installation, monitoring, maintenance, and financing plans such as leases and monthly subscription options. It operates across the United States, serving over one million homes.
6 investors
Tenderd provides AI-driven fleet and equipment management software for businesses to optimize operations and reduce environmental impact. The platform helps track and manage assets across industries.
6 investors
Transaera develops heat pump systems and Dedicated Outdoor Air Systems (DOAS) that use novel materials to dehumidify, cool, and heat air for commercial buildings. Its rooftop units remove humidity before cooling to cut energy use and emissions, targeting building operators seeking lower operating costs and comfort in humid climates.
6 investors
Treehouse provides installation services for EV chargers, home battery backup systems, electrical panel upgrades, and other electrical projects, using a virtual assessment process to deliver online quotes. It serves residential, multi-family, and commercial customers with licensed electricians who handle permitting, inspection, and financing.
6 investors
X-energy develops advanced nuclear energy technology, including small modular high-temperature gas reactors and TRISO fuel. Its reactors are designed to supply electricity and high-temperature steam for utilities and energy-intensive heavy industry.
6 investors
EneCoat Technologies develops and manufactures perovskite solar cells (PSCs) and related materials. The company specializes in advanced solar cell technology and materials for the renewable energy sector.
6 investors
60Hertz Energy provides asset management and computerized maintenance software for renewable energy operations, covering solar (C&I, utility scale, agrovoltaics), utility scale wind, substations, and vegetation management. It serves energy service providers and operators managing distributed generation and renewable energy campuses.
5 investors
Addis Energy develops technology that combines oil and gas engineering expertise with advanced research to access energy and resources from subsurface geology.
5 investors
Advanced Ionics develops electrolyzer technology for producing green hydrogen, using its Symbiotic water vapor electrolysis that operates at intermediate temperatures and taps into existing industrial steam to lower electricity and capital costs. It targets industrial customers with hydrogen needs and exothermic processes, aiming to reduce the cost premium of green hydrogen production.
5 investors
AI Fund is a venture studio led by AI pioneers, operators, founders, and investors that helps founders build and scale AI companies. It operates as an investment and company-building organization in the artificial intelligence space.
5 investors
AIRMO develops satellite-based methane measurement technology for detecting methane emissions with precision and global coverage. The company serves energy operators and provides commercial monitoring solutions across Europe, the Middle East, and other continents.
5 investors
American Terawatt is building a national high-voltage direct current (HVDC) transmission network in the United States designed to deliver gigawatts of power to large industrial loads. The company targets 4,000MW of capacity by 2028 and 14GW by 2030 using 525kV multi-terminal DC transmission.
5 investors