All Industries

Top Energy Companies

936 Energy companies, sorted by total funding raised.

Renaissance Fusion

Builds stellarators — the most efficient, steady, and stable fusion reactors on earth — to delive...

Clean Tech, Energy
Series A·$58.8M·Mar 2025
Lydian Labs

Lydian Labs aims to revolutionize the thermal catalytics process to decarbonize the chemicals ind...

Cambridge, United States11–50Energy, Climate Tech
Series A·$58.7M·Jan 2026
Mantle

Mantle’s TrueShape™ technology prints, shapes, and sinters precision metal parts from a CAD file ...

San Francisco, United StatesEnergy
Series C·$58.0M·Jul 2024
Leap

Platform for building and scaling virtual power plants, connecting distributed energy resources t...

San Francisco, United States51–200Clean Energy, Energy
Extension Round·$57.7M·Nov 2023
Properly

Residential real estate marketplace

San Francisco Bay Area, Canada51–200Energy
Extension Round·$57.0M·Aug 2022
SolsticeAcquired

Solstice radically expands access to clean energy by providing community-shared solar power to th...

Boston, United States11–50Clean Tech, Climate Tech
Series A·$55.8M·May 2026
Skan AI

Skan is where business process execution meets AI. The largest companies in the world use Skan to...

San Francisco, United States51–200Energy, Artificial Intelligence
Series B·$54.0M·Mar 2022
C
CADIZIPO

Cadiz Inc. is a water solutions provider delivering clean, reliable, and affordable water infrast...

Los Angeles, United StatesEnergy
Venture Round·$52.0M·Feb 2023
AquamAcquired

Aquam Corporation provides pipeline infrastructure technology and inspection services for water a...

United StatesEnergy, Infrastructure
Series A·$51.0M·Jun 2026
Liberation Labs

Climate and energy sustainability company developing next-generation fermentation infrastructure.

Richmond, United States11–50Climate Tech, Energy
Convertible·$50.5M·Jan 2025
OpenLegacy

Instantly Integrate Core Systems to the Cloud- Enabling organizations with legacy systems to rele...

Tokyo, United States51–200Energy, Developer Tools
Series C·$50.0M·Feb 2020
SDCL

Sustainable Development Capital LLP is a developer, investor and fund manager focused on energy e...

London, United Kingdom11–50Climate Tech, Clean Energy
Corporate Round·$50.0M·Jun 2024
Sustech
Tokyo, JapanEnergy, sustainability
Venture Round·$50.0M·Oct 2024
Zeno Power

Develops radioisotope nuclear batteries delivering multi-year power for space missions and subsea...

Seattle, United States51–200Defense Tech, Energy
Series B·$50.0M·May 2025
David Energy

David Energy is a technology-driven retail electricity provider that manages distributed energy r...

Brooklyn, United States11–50Clean Tech, Energy
Series B·$49.1M·Apr 2024
LIQUIDPISTON, INC

R&D company with 8 SBIR/STTR awards from Department of Defense.

BLOOMFIELD, United States11–50Aerospace, Defense Tech
Seed·$48.2M·Mar 2026
Erthos

Utility-scale earth-mounted solar PV company that lays panels flat on the ground to reduce costs ...

Tempe, United States51–200Energy, Clean Energy
Series A·$48.0M·Sep 2023
XL Batteries

They aim to bring widespread electrochemical storage to the grid for use anywhere, anytime

Paris, United StatesEnergy, Climate Tech
Series A·$46.0M·Sep 2025
Stem

Provides AI-driven software and managed services to optimize solar and battery energy assets for ...

San Francisco, United States501–1000Artificial Intelligence, Clean Energy
Series B·$45.2M·Dec 2013
InnowattsAcquired

AI-powered energy analytics platform providing forecasting and consumer insights to utilities, en...

Houston, United States51–200Artificial Intelligence, Energy
Series B·$45.0M·Feb 2021
Queens Carbon

Queens Carbon is developing groundbreaking processing technology to significantly reduce the ener...

San Francisco, United States1–10Energy, Clean Tech
Seed·$44.5M·Apr 2025
Sepio Systems

Sepio helps organizations manage their Hardware assets related risks based on physical layer data.

San Francisco, United States51–200Energy, Cybersecurity
Series B·$43.5M·Aug 2024
Zema Global

Data management and analytics platform for energy, commodities, and financial sectors ingesting f...

Toronto, Canada51–200Data & Analytics, Energy
Growth Equity·$42.0M·Jul 2024
CienaIPO

Optical networking systems and software company providing transport, switching, and management so...

Hanover, United States5001–10000Energy, enterprise software
Angel·$41.3M·Apr 1994
Gaussion

London-based energy intelligence technology for battery packs.

London, United Kingdom11–50Deep Tech, Energy
Venture Round·$40.0M·Jun 2026