All Rankings

Top 100 Energy Startups 2026

Private energy companies whose latest recorded funding type is not a grant, private equity, or debt financing, ranked by disclosed lifetime funding.

Known total funding for 100 of 100 ranked companies: $47.3B.

Showing top 100 matching companies · Ranked by total funding raised

Use company data through the API.
Example request
curl "https://indexed.vc/api/v1/companies?industries=Energy&operatingStatus=active&sort=total_funding_raised&order=desc&limit=100" -H "X-API-Key: YOUR_API_KEY"

The API has no company type filter, so public companies can appear; this list counts private companies only.

The API cannot leave out companies whose latest round is a grant, private equity or debt financing; this list does.

Data from Indexed.vcUpdated

Methodology: up to 100 active companies matching this list's filters are ordered by disclosed total funding in USD. Companies whose latest round is one of: Grant, Private Equity, Debt Financing are excluded. Totals include recorded grants and other qualifying funding, not just equity. Open a company profile for its funding summary and available detail. How this data is built.

26
Fever

Fever provides energy companies an operating system to connect distributed assets, run portfolios...

Madrid, Spain1001–5000Energy, Entertainment
Series FTotal funding$515.3MJun 2025
27
PhysicsX

PhysicsX develops AI-native engineering software that helps industrial organizations accelerate s...

London, United Kingdom51–200Artificial Intelligence, Automotive
Series CTotal funding$484.0MJun 2026
28
HIF Global

World-leading e-Fuels company that operates a groundbreaking production facility in Chile, HIF Ha...

Santiago, Chile51–200Energy
Venture RoundTotal funding$460.0MAug 2024
29
Ovo Energy

UK energy supplier providing electricity and gas to over 3.5 million homes, based in Bristol.

Bristol, United Kingdom1001–5000Energy
Series DTotal funding$458.0MJul 2023
30
Arcadia

Arcadia is a climate tech company providing advanced utility data platforms and AI-driven energy ...

Washington, United States501–1000Clean Energy, Data & Analytics
Series ETotal funding$435.5MApr 2024
31
Hydrostor

Hydrostor develops and operates long-duration energy storage systems using Advanced Compressed Ai...

Toronto, Canada51–200Energy
Growth EquityTotal funding$430.0MAug 2026
32
Blockdaemon

Blockdaemon is the provider of a blockchain nodes as a service platform designed to empower busin...

San Francisco, United States51–200Crypto & Web3, Developer Tools
Series CTotal funding$402.0MJan 2022
33
Mariana Minerals

Mariana Minerals develops and operates software-first critical-minerals projects, supplying mater...

Houston, United States51–200Artificial Intelligence, Defense Tech
Series BTotal funding$395.0MAug 2026
34
Koloma

Data-driven natural hydrogen exploration company that identifies and produces low-carbon hydrogen...

Denver, United States51–200Climate Tech, Energy
Extension RoundTotal funding$386.7MOct 2024
35
Blue Energy

Blue Energy develops factory-built nuclear power plants designed to deliver scalable, reliable el...

Chicago, United States51–200Climate Tech, Energy
Venture RoundTotal funding$380.0MApr 2026
36
Galactic Energy

Commercial launch company: Ceres-1 solid rockets; Pallas-1 reusable liquid rocket reached orbit S...

Beijing, ChinaAerospace, Energy
Venture RoundTotal funding$357.5MSep 2025
37
Redaptive

Redaptive combines capital, execution, and measurable results to help enterprises modernize energ...

Denver, United States201–500Clean Tech, Energy
Corporate RoundTotal funding$356.5MDec 2022
38
Grenadier Energy Partners
The Woodlands, United StatesClean Tech, Energy
Growth EquityTotal funding$350.0MJun 2021
39
Gecko Robotics

Gecko Robotics builds wall-climbing robots with sensors that inspect critical infrastructure for ...

Pittsburgh, United States201–500Artificial Intelligence, Data & Analytics
Series DTotal funding$340.4MJun 2025
40
SparkCognition

Empowering the world’s problem-solvers and catalyzing growth with their proven artificial intelli...

San Francisco, United States201–500Energy, Artificial Intelligence
Series DTotal funding$320.0MJan 2022
41
Vayyar Imaging

Vayyar develops privacy-preserving 4D imaging radar sensors that enable devices to recognize and ...

Tokyo, Israel201–500Energy, Defense Tech
Series ETotal funding$318.0MJun 2022
42
Utilidata

Utilidata’s Karman platform combines high-resolution metrology, local processing, and AI to unloc...

Providence, United States51–200Artificial Intelligence, Energy
Extension RoundTotal funding$264.6MMay 2026
43
Mora Energy

Mora Energy is an independent energy company focused on developing and acquiring critical energy ...

Dallas, United States1–10Climate Tech, Energy
Growth EquityTotal funding$250.0MApr 2025
44
Kpler

Kpler powers decisions that move the world, connecting billions of data points to uncover opportu...

Brussels, Belgium501–1000Data & Analytics, Energy
Growth EquityTotal funding$246.0MApr 2022
45
HoloSolis

HoloSolis is building a French photovoltaic module gigafactory to manufacture low-carbon solar pa...

Sarreguemines, France11–50Climate Tech, Energy
Venture RoundTotal funding$245.0MNov 2025
46
Cognite

Cognite is a global industrial Software-as-a-Service (SaaS) leader that provides an industrial da...

Oslo, Norway501–1000Artificial Intelligence, Industrials
Series BTotal funding$225.0MMay 2021
47
Veir

VEIR builds superconducting power delivery systems that give AI data centers and industrial sites...

Woburn, United States11–50Clean Tech, Energy
Series CTotal funding$221.9MOct 2026
48
CubicPV

CubicPV develops perovskite solar module technology, achieving 24% efficiency in collaboration wi...

Bedford, United States51–200Climate Tech, Clean Tech
Growth EquityTotal funding$208.8MJun 2023
49
Eavor

Next-generation geothermal energy company developing the Eavor-Loop closed-loop system for scalab...

Calgary, Canada51–200Clean Tech, Energy
Extension RoundTotal funding$208.0MJan 2024
50
Pembroke Resources

Pembroke Olive Downs develops premium steelmaking coal assets, including the world-class Olive Do...

AustraliaEnergy, Oil & Gas
Venture RoundTotal funding$200.0MMay 2014