Energy Tech · United States, India

Best Energy Tech Companies in United States

Updated 2026-06-16 · Ranked by funding & momentum

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.

6,082
Companies
$125.9B
Total Funding
2,101
Funded
32
Unicorns
45
Rounds (90d)

Ranked: Best Energy Tech companies in United States

#CompanyFundingValuationStage Latest roundEmployeesFoundedMomentum
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

Top 12 Energy Tech companies in United States

#1
$3.2B Raised
expand_more
#1

Faraday Future Public

location_onLos Angeles, California
Founded
2014
Employees
586
Funding raised
$3.2B
Stage
Public

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.

Funding rounds (19 disclosed of 21)
Round Date Amount
Post IPO Apr 2026 $45M
Post IPO Jul 2025 $105M
Post IPO Apr 2025 $8.9M
Post IPO Dec 2024 $30M
Post IPO Sep 2024 $30M
Post IPO Aug 2023 Undisclosed
15 earlier rounds — sign up free
Founders & key people
Tech stack
acquia cloud platformacquia cloud site factoryadobe analyticsadobe experience platform identity serviceadobe experience platform launchakamai+14
#2
Nexamp Unicorn Series E
$1.3B Raised
expand_more
#2

Nexamp Unicorn Series E

location_onBoston, Massachusetts
Founded
2007
Employees
331
Funding raised
$1.3B
Valuation
$1B · 2024
Stage
Series E

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

Funding rounds (12 disclosed of 13)
Round Date Amount
Conventional Debt Apr 2026 $200M
Series E Feb 2026 $180M
Series E Mar 2024 $520M
Conventional Debt Jun 2023 Undisclosed
Series E Jun 2023 $400M
Series D Aug 2021 $240M
7 earlier rounds — sign up free
Founders & key people
Tech stack
apple icloud mailawinbootstrapcloudflarecloudflare bot managementcore-js+14
#3
Lucid Unicorn Public
$1.1B Raised
expand_more
#3

Lucid Unicorn Public

location_onNewark, California
Founded
2007
Employees
6,500
Funding raised
$1.1B
Valuation
$24B · 2021
Stage
Public

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.

Funding rounds (9 disclosed of 10)
Round Date Amount
Post IPO Apr 2026 $750M
Post IPO Nov 2025 $875M
Post IPO Sep 2025 $300M
Grant (prize money) Feb 2024 $6M
Post IPO Dec 2022 Undisclosed
Post IPO Apr 2021 $200M
4 earlier rounds — sign up free
Tech stack
acquia cloud platformacquia cloud site factoryadobe analyticsadobe experience platform identity serviceadobe experience platform launchakamai+14
#4
Slate Auto Series C
$1.4B Raised
expand_more
#4

Slate Auto Series C

location_onTroy, Michigan
Founded
2022
Funding raised
$1.4B
Stage
Series C

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

Funding rounds (3 disclosed of 3)
Round Date Amount
Series C Apr 2026 $650M
Series B Apr 2025 $590M
Series A 2023 $111M
Tech stack
amazon advertisingamazon webstoreapple icloud mailcloudflarecloudflare bot managementcontentful+14
#5
Zero Motorcycles Series G
$554.2M Raised
expand_more
#5

Zero Motorcycles Series G

location_onScotts Valley, California
Founded
2006
Employees
224
Funding raised
$554.2M
Stage
Series G

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.

Funding rounds (55 disclosed of 56)
Round Date Amount
Series G May 2026 $15M
Series G Oct 2024 $100.2M
Series G Sep 2022 $107M
Series F Apr 2022 $86.6M
Series E Oct 2021 $7M
Series E Jun 2021 $20M
50 earlier rounds — sign up free
Founders & key people
Tech stack
amazon web servicesamerican expressapple icloud mailcart functionalitycloudflarecloudflare bot management+14
#6
Rivian Unicorn Public
$10.5B Raised
expand_more
#6

Rivian Unicorn Public

location_onIrvine, California
Founded
2009
Employees
16,790
Funding raised
$10.5B
Valuation
$3.5B · 2019
Stage
Public

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

Funding rounds (13 disclosed of 16)
Round Date Amount
Post IPO Jun 2025 $1B
Post IPO Feb 2022 Undisclosed
Series E Jul 2021 $2.5B
Series E Jan 2021 $2.6B
Series E Sep 2020 Undisclosed
Series E Jul 2020 $2.5B
10 earlier rounds — sign up free
Tech stack
amazon cloudfrontamazon s3amazon sesamazon web servicesamplitudeangular+14
#7
Fervo Energy Public
$420.2M Raised
expand_more
#7

Fervo Energy Public

location_onSan Francisco, California
Founded
2017
Employees
49
Funding raised
$420.2M
Stage
Public

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

Funding rounds (12 disclosed of 12)
Round Date Amount
Conventional Debt Mar 2026 $421M
Series E Dec 2025 $462M
Conventional Debt Jun 2025 $105.5M
Series D Jun 2025 $100M
Grant (prize money) May 2025 $22.1M
Conventional Debt Dec 2024 $120M
6 earlier rounds — sign up free
Tech stack
apple icloud mailcloudflarecloudflare bot managementcore-jselementorfancybox+14
#8
ALSO Unicorn Series C
$505M Raised
expand_more
#8

ALSO Unicorn Series C

location_onPalo Alto, California
Founded
2025
Funding raised
$505M
Stage
Series C

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.

Funding rounds (3 disclosed of 3)
Round Date Amount
Series C Mar 2026 $200M
Series B Jul 2025 $200M
Series B Mar 2025 $105M
Founders & key people
Tech stack
apple icloud mailapple paycart functionalitycloudflarecore-jsemotion+14
#9
EnerVenue Series B
$445.1M Raised
expand_more
#9

EnerVenue Series B

location_onFremont, California
Founded
2020
Employees
225
Funding raised
$445.1M
Stage
Series B

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.

Funding rounds (4 disclosed of 4)
Round Date Amount
Series B Mar 2026 $300M
Series B Oct 2023 $308.1M
Series A Sep 2021 $125M
Seed Aug 2020 $12M
#10
Crusoe Unicorn Series E
$576.9M Raised
expand_more
#10

Crusoe Unicorn Series E

location_onDenver, Colorado
Founded
2018
Employees
242
Funding raised
$576.9M
Valuation
$1.8B · 2022
Stage
Series E

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

Funding rounds (14 disclosed of 15)
Round Date Amount
Conventional Debt Feb 2026 $300M
Series E Oct 2025 $1.4B
Venture Debt Aug 2025 $175M
Venture Debt Jun 2025 $750M
Conventional Debt Mar 2025 $225M
Series D Nov 2024 $685.7M
9 earlier rounds — sign up free
Tech stack
amazon advertisingamazon cloudfrontamazon s3amazon web servicesamazon webstoreapple icloud mail+14
#11
Archer Unicorn Public
$1.5B Raised
expand_more
#11

Archer Unicorn Public

location_onSan Jose, California
Founded
2018
Employees
424
Funding raised
$1.5B
Valuation
$1.7B · 2021
Stage
Public

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.

Funding rounds (5 disclosed of 8)
Round Date Amount
Post IPO Dec 2025 Undisclosed
Post IPO Jun 2025 $850M
Post IPO Dec 2024 $430M
Post IPO Aug 2024 $220M
Post IPO Jul 2024 $55M
Post IPO Aug 2023 $215M
2 earlier rounds — sign up free
Founders & key people
Tech stack
amazon web servicesanimate.cssapple icloud mailbugherdcdnjscloudflare+14
#12
BETA Unicorn Public
$1.2B Raised
expand_more
#12

BETA Unicorn Public

location_onSouth Burlington, Vermont
Founded
2012
Employees
535
Funding raised
$1.2B
Valuation
$1.4B · 2021
Stage
Public

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.

Funding rounds (8 disclosed of 9)
Round Date Amount
Grant (prize money) Oct 2025 $1.8M
Series C Sep 2025 $300M
Grant (prize money) May 2025 $1.8M
Series C Oct 2024 $469.6M
Conventional Debt Nov 2023 $169M
Series B Jun 2022 Undisclosed
3 earlier rounds — sign up free
Tech stack
amazon web servicesapache http serverapple icloud mailapple paybootstrapcdnjs+14

Recent signals in United States Energy Tech

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Funding & investor landscape

Total raised
$125.9B
across these companies
Companies funded
2,101
with disclosed funding
Highest-funded
$10.5B raised

Most active investors

O OSTI 294 investments in Energy Tech NF National Science Foundation 146 investments in Energy Tech D DOE 141 investments in Energy Tech CC Climate Capital 101 investments in Energy Tech GL Greentown Labs 79 investments in Energy Tech T Techstars 68 investments in Energy Tech YC Y Combinator 66 investments in Energy Tech PC Plug and Play Tech Center 57 investments in Energy Tech AF America’s Seed Fund 55 investments in Energy Tech E Elemental 51 investments in Energy Tech E Europa 51 investments in Energy Tech CG Clean Energy Venture Group 45 investments in Energy Tech

Notable founders in United States Energy Tech

MA Matthias Aydt Global CEO Faraday Future · $3.2B raised
ZA Zaid Ashai CEO Nexamp · $1.3B raised
PR Peter Rawlinson CEO and CTO Lucid · $1.1B raised
BT Bernard Tse CEO Lucid · $1.1B raised
MA Miles Arnone Co-Founder Slate Auto · $1.4B raised
JW Jeff Wilke Co-Founder Slate Auto · $1.4B raised
SP Sam Paschel CEO Zero Motorcycles · $554.2M raised
JN Jack Norbeck Co-Founder and CTO Fervo Energy · $420.2M raised
TL Tim Latimer Co-Founder Fervo Energy · $420.2M raised
CY Chris Yu Co-Founder ALSO · $505M raised
YC Yi Cui Founder EnerVenue · $445.1M raised
CC Cully Cavness Co-Founder, President and COO Crusoe · $576.9M raised

Frequently asked questions

How many Energy Tech companies are there in United States?
Radar tracks 6082 indexable Energy Tech companies headquartered in United States, India, that meet our profile-completeness bar.
What is the total funding raised by Energy Tech companies in United States?
The Energy Tech companies in United States on this list have raised a combined $125.9B in disclosed equity funding across 2101 funded companies.
Which is the highest-funded Energy Tech company in United States?
Rivian is the highest-funded Energy Tech company in United States, with $10.5B in disclosed equity funding.
How many Energy Tech companies in United States are funded?
2101 of the 6082 Energy Tech companies in United States on this list have disclosed at least one equity funding round.
How many Energy Tech unicorns are there in United States?
32 Energy Tech companies in United States on this list are valued at $1B or more.
Who are the top investors in United States Energy Tech companies?
The most active investors in United States Energy Tech companies on this list include OSTI, National Science Foundation, DOE, Climate Capital, Greentown Labs.

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.

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