6082 indexable Energy Tech companies headquartered in United States, ranked by total equity funding and recent funding momentum. Combined disclosed equity funding of $125.9B across 2101 funded companies, including 32 unicorns.
| # | Company | Funding | Valuation | Stage | Latest round | Employees | Founded | Momentum |
|---|---|---|---|---|---|---|---|---|
| 1 |
Faraday Future
Manufacturer of electric cars |
$3.2B | — | Public | Post IPO Apr 2026 | 586 | 2014 | ↑ Active |
| 2 |
Nexamp
Unicorn Provider of community solar programs and energy solutions for businesses |
$1.3B | $1B as of 2024 |
Series E | Conventional Debt Apr 2026 | 331 | 2007 | ↑ Active |
| 3 |
Lucid
Unicorn Manufacturer of electric vehicles and related technologies for consumer markets |
$1.1B | $24B as of 2021 |
Public | Post IPO Apr 2026 | 6,500 | 2007 | ↑ Active |
| 4 |
Slate Auto
Manufacturer of customizable electric pickup trucks and SUVs |
$1.4B | — | Series C | Series C Apr 2026 | — | 2022 | ↑ Active |
| 5 |
Zero Motorcycles
Manufacturer of electric motorcycles, related accessories, and associated merchandise |
$554.2M | — | Series G | Series G May 2026 | 224 | 2006 | ↑ Active |
| 6 |
Rivian
Unicorn Manufacturer of off-road electric pickup trucks for adventure |
$10.5B | $3.5B as of 2019 |
Public | Post IPO Jun 2025 | 16,790 | 2009 | ↑ Active |
| 7 |
Fervo Energy
Developer of next-generation geothermal projects delivering carbon-free energy |
$420.2M | — | Public | Conventional Debt Mar 2026 | 49 | 2017 | ↑ Active |
| 8 |
ALSO
Unicorn Manufacturer of electric bikes, quadricycles, helmets, gear, and accessories |
$505M | — | Series C | Series C Mar 2026 | — | 2025 | ↑ Active |
| 9 |
EnerVenue
Manufacturer of metal-hydrogen batteries for grid-scale, commercial, and residential applications |
$445.1M | — | Series B | Series B Mar 2026 | 225 | 2020 | ↑ Active |
| 10 |
Crusoe
Unicorn Operator of cloud platform providing infrastructure for artificial intelligence workloads |
$576.9M | $1.8B as of 2022 |
Series E | Conventional Debt Feb 2026 | 242 | 2018 | ↑ Active |
| 11 |
Archer
Unicorn Developer of electric vertical takeoff and landing aircraft for commercial use |
$1.5B | $1.7B as of 2021 |
Public | Post IPO Dec 2025 | 424 | 2018 | ↑ Active |
| 12 |
BETA
Unicorn Manufacturer of electric aircraft, charging systems, and customized training programs |
$1.2B | $1.4B as of 2021 |
Public | Grant (prize money) Oct 2025 | 535 | 2012 | ↑ Active |
| 13 |
Clean Capital
Online platform for funding solar projects |
$503.9M | — | Series B | Conventional Debt Jan 2026 | 30 | 2015 | ↑ Active |
| 14 |
Nuro
Unicorn Developer of autonomous driving technology for automakers and mobility providers |
$2.1B | $8.6B as of 2021 |
Series E | Series E Aug 2025 | 1,005 | 2016 | ↑ Active |
| 15 |
VoltaGrid
AI and cloud-driven platform offering microgrids to provide electricity to off-grid areas |
$100M | — | Series D | Series D May 2026 | 44 | 2020 | ↑ Active |
| 16 |
Base Power
Unicorn Provider of battery storage system |
$1.3B | — | Series C | Series C Oct 2025 | — | 2023 | ↑ Active |
| 17 |
Ascent Solar
Manufacturer of flexible thin-film solar panels for varied applications |
$265.2M | — | Public | Post IPO Jan 2026 | 16 | 2005 | ↑ Active |
| 18 |
Frore Systems
Developer of thermal management solutions for data centers and electronic devices |
$190M | — | Series D | Series D Mar 2026 | 75 | 2018 | ↑ Active |
| 19 |
Switched Source
Developer of hardware-based system for distributed energy resources |
$66.7M | — | Seed | Seed May 2026 | 8 | 2016 | ↑ Active |
| 20 |
ZeroAvia
Manufacturer of hydrogen electric propulsion systems for commercial aviation aircraft |
$348.2M | — | Series C | Series C Dec 2025 | 200 | 2018 | ↑ Active |
| 21 |
SPAN
Smart energy management technology platform that modernizes residential electrical systems |
$231M | — | Series C | Series C Jan 2026 | 220 | 2014 | ↑ Active |
| 22 |
GridCARE
Provider of AI data center power solutions leveraging existing grid infrastructure |
$77.5M | — | Series A | Series A May 2026 | — | 2024 | ↑ Active |
| 23 |
Factorial Energy
Developer of sustainable solid-state batteries |
$244.2M | — | Series D | Series D Jan 2026 | 175 | 2013 | ↑ Active |
| 24 |
Arc Boats
Manufacturer of electric ships |
$137M | — | Series C | Series C Mar 2026 | 55 | 2021 | ↑ Active |
| 25 |
Budderfly
Provider of energy management solutions and services for buildings |
$84.8M | — | Acquired | Conventional Debt Mar 2026 | 103 | 2007 | ↑ Active |
| 26 |
Sense
Smart energy platform providing real-time electricity usage insights for homes and utilities |
$194.6M | — | Series D | Series D Jan 2026 | 120 | 2013 | ↑ Active |
| 27 |
Torus
Manufacturer of power generators and energy management app |
$67M | — | Series D | Conventional Debt May 2026 | 1 | 2021 | ↑ Active |
| 28 |
Plug Power
Provider of hydrogen fuel cell solutions and hydrogen generation technologies |
$2.1B | — | Public | Grant (prize money) May 2025 | 2,449 | 1997 | ↑ Active |
| 29 |
Group14 Technologies
Manufacturer of advanced silicon battery for clean energy solutions |
$683.3M | — | Series D | Series D Aug 2025 | 213 | 2015 | ↑ Active |
| 30 |
Liminal Energy
Developer of integrated development, financing, and operations for grid-scale energy storage projects |
$200M | — | Late Stage | PE Jan 2026 | — | 2025 | ↑ Active |
| 31 |
EnviroSpark Energy Solutions
Electric vehicle charging station installers |
$65M | — | Series B | Series B Mar 2026 | 98 | 2014 | ↑ Active |
| 32 |
Amogy
Developer of ammonia-to-power systems and ammonia cracking catalysts for decarbonization |
$197.1M | — | Series C | Series C Nov 2025 | 151 | 2021 | ↑ Active |
| 33 |
nine.energy
Developer of community-scale battery energy storage systems for electric grid |
$325M | — | Late Stage | Conventional Debt Oct 2025 | 35 | 2020 | ↑ Active |
| 34 |
SmartAC.com
Provider of a platform for HVAC membership program management and growth |
$38.6M | — | Series B | Series B Mar 2026 | 34 | 2003 | ↑ Active |
| 35 |
WattEV
Platform offering electric trucking infrastructure and services |
$37M | — | Seed | Seed Apr 2026 | 30 | 2020 | ↑ Active |
| 36 |
Tantalus
Communication technology provider for smart grids |
$58.7M | — | Public | Post IPO Feb 2026 | 42 | 1989 | ↑ Active |
| 37 |
Harbinger Motors
Manufacturer offering electric vehicle solutions |
$179.9M | — | Series C | Series C Nov 2025 | 52 | 2021 | ↑ Active |
| 38 |
DG Matrix
Provider of a DC fast charger for electric vehicles |
$80M | — | Series A | Series A Feb 2026 | — | 2022 | ↑ Active |
| 39 |
Verdigris
AI and SaaS-driven energy analytics platform for the management of facilities and commercial buildings |
$41.7M | — | Series B | Series B Mar 2026 | 27 | 2011 | ↑ Active |
| 40 |
Viridi Parente
Manufacturer of modular lithium-ion battery energy storage systems for various applications |
$95M | — | Series C | Series C Feb 2026 | 102 | 2009 | ↑ Active |
| 41 |
Wildcat Discovery Technologies
Developer of advanced materials for rechargeable and primary batteries |
$184M | — | Acquired | Series D Oct 2025 | 122 | 2006 | ↑ Active |
| 42 |
Malta
Developer of long-duration energy storage systems using steam-based heat pump |
$98.3M | — | Series B | Series B Dec 2025 | 266 | 2018 | ↑ Active |
| 43 |
Joby Aviation
Manufacturer of electric vertical takeoff and landing aircraft |
$690M | — | Public | Post IPO May 2025 | 1,777 | 2009 | ↑ Active |
| 44 |
Emerald
Developer of a platform optimizing power grids and artificial intelligence infrastructure |
$66.5M | — | Seed | Seed Feb 2026 | — | 2024 | ↑ Active |
| 45 |
GlassPoint
Solar steam solutions for industry, reducing carbon emissions cost-effectively |
$94.8M | — | Series C | Series C Jan 2026 | 33 | 2008 | ↑ Active |
| 46 |
Redaptive
Unicorn Provider of fully-funded energy efficiency and sustainability solutions. It offers end-to-end services, including financing, expertise, and project management, to implement energy-saving and renewable upgrades across multiple sites. This allows clients to focus on their core business while achieving OPEX reduction and meeting ESG goals. Services encompass real-time data monitoring, enabling performance analysis and sustainability reporting, along with flexible financing options. The company's approach facilitates faster and larger-scale implementation of sustainability initiatives than clients could achieve independently. |
$726.5M | $1B as of 2022 |
Series E | Conventional Debt May 2025 | 326 | 2015 | ↑ Active |
| 47 |
Antora
Manufacturer of thermal battery |
$200.1M | — | Series B | Grant (prize money) Sep 2025 | — | 2018 | ↑ Active |
| 48 |
Nikola Motor
Developer of electric trucks |
$760M | — | Public | Grant (prize money) May 2025 | 870 | 2015 | ↑ Active |
| 49 |
24m Technologies
Unicorn Developer of battery technology for electric vehicles and energy storage |
$500M | — | Series H | Grant (prize money) Jun 2025 | 147 | 2010 | ↑ Active |
| 50 |
Rebound
Developer of industrial cooling technology with built-in energy storage |
$17.9M | — | Series A | Series A Apr 2026 | 7 | 2012 | ↑ Active |
Manufacturer of electric cars. It offers a comprehensive solution for electric mobility like smart mobility platforms, designing, engineering services, and more. It develops FF91 electric cars with features that include 3 electric motors,lithium-ion batteries, automated re-loading systems, cloud, and AI-enabled user interfaces, and more.
Provider of community solar programs and energy solutions for businesses. It offers community solar subscriptions, enabling savings on electricity costs without rooftop panels. It delivers energy storage solutions and power purchase agreements for commercial users. It also offers community solar programs with no rooftop panels, sign-up fees, or long-term contracts, enabling savings on electricity costs. It focuses on
Manufacturer of electric vehicles and related technologies for consumer markets. It offers various models with different range capabilities and features. The company also provides related services, including financing options and vehicle accessories.
Manufacturer of customizable electric pickup trucks and SUVs. The company offers a base vehicle that customers can personalize with a variety of accessories and configurations, including different body styles, wheels, tires, and exterior wraps. This allows for a high degree of individualization, enabling customers to create a vehicle tailored to their specific needs and preferences. The process involves reserving a s
Manufacturer of electric motorcycles, related accessories, and associated merchandise. The company provides various models across different lines, including options for on-road and off-road use. It offers resources related to electric vehicle advantages, charging, range, and technology. The business also facilitates finding dealers, viewing events, and comparing models.
Manufacturer of off-road electric pickup trucks for adventure. The platform specializes in premium electric sport utility vehicles and pickup trucks designed for off-road capability and adventure. Its flagship products include the R1T electric pickup and the R1S electric SUV, both built on a flexible skateboard platform that supports future vehicle models. It offers features including quad-motor all-wheel drives, air
Developer of next-generation geothermal projects delivering carbon-free energy. It pioneers a new approach to geothermal energy using technologies like horizontal drilling and distributed fiber optic sensing to unlock geothermal resources. It focuses on making geothermal energy a scalable resource and ensures environmental health and safety in its operations. The company aims to decarbonize challenging parts of the e
Manufacturer of electric bikes, quadricycles, helmets, gear, and accessories. The company offers electric bikes with features like integrated lighting and modular top frames. It also provides quadricycles designed for commercial cargo and personal transportation. Helmets with built-in speakers and lighting are available, alongside compatible gear and accessories.
Manufacturer of metal-hydrogen batteries for grid-scale, commercial, and residential applications. The company's technology is suited for energy storage solutions. The batteries have longevity, temperature tolerance, and low maintenance requirements. The company focuses on accelerating clean energy through its products.
Operator of cloud platform providing infrastructure for artificial intelligence workloads. The company designs, builds, and operates infrastructure to power artificial intelligence. It offers managed inference, cluster management, and observability. The platform features high-performance compute, accelerated storage, and optimized networking. It provides support for open and open-source models. The company focuses on
Developer of electric vertical takeoff and landing aircraft for commercial use. The company focuses on aircraft certification, safety, and defense applications. It provides updates through its newsroom and offers various resources. These resources include information for investors, media, and potential employees.
Manufacturer of electric aircraft, charging systems, and customized training programs. They build electric vertical and conventional takeoff and landing aircraft. The company also manufactures charge cubes and thermal management systems for electric aircraft and vehicles. In addition, they provide customized training programs for pilots to operate electric aircraft.
Rankings are computed by Radar (Fliar BI) from the Radar company master and are updated periodically. Funding and momentum scores use disclosed equity-funding data only. Figures may lag private rounds. Last updated 2026-06-16.