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Venture - Series Unknown Energy Efficiency Companies

Explore 59 energy efficiency startups that raised venture - series unknown funding. Access verified founder contact information and fundraising data.

Total Companies
59
Total Funding
$338.0M
Avg Funding
$13.5M
Cities
23

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Denver, United States
$100.0M
raised

Xcimer Energy is an inertial fusion company offering laser-driven fusion to provide cheap, abundant, and carbon-free energy.

Sep 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$3.3M
raised

Signol focuses on behavior change to reduce fuel consumption and carbon emissions in the aviation and shipping sectors.

Sep 2024
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Nice, France
$5.4M
raised

Qualisteo, is a company based in Nice (France) specialized in energy efficiency for industrial and tertiary sites

Sep 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Bucharest, Romania
$3.3M
raised

Ogre AI is a data science startup that engages in artificial intelligence and machine learning solutions for the utility industry.

Sep 2024
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Lisboa, Portugal
$17.4M
raised

Bling Energy is a startup that focuses on providing more efficient and sustainable energy solutions, mostly through solar panels.

Aug 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Los Angeles, United States
$4.3M
raised

Haus.me - Autonomous Self-Sustainable Homes

Aug 2022
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Cologne, Germany

EINHUNDERT Energy develops smart services around green and digital energy supply for tenants.

Aug 2022
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Ilmenau, Germany

Betterspace develops IoT-powered building and energy management software that helps organizations create smarter, sustainable spaces.

Aug 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Sisli, Turkey

Apollo is a software company that provides businesses with energy consumption-related financial efficiency and sustainability solutions.

Jul 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

San Diego, United States
$6.6M
raised

Transforming sustainable electrification with scalable solid state power conversion and distribution systems.

Jul 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Paris, France
$2.2M
raised

Geosophy develops real estate assets and manages energy usage by assuring a local supply for thermal comfort.

Jul 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Cambridge, United Kingdom
$8.1M
raised

Silicon MicroGravity is a company developing novel sensor technology.

Jul 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Calgary, Canada
$73K
raised

RocketFrac designs a propellant based fracing technology for economically efficient and environmentally friendly oil & gas recovery.

Jul 2024
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Le Bourget-du-lac, France
$25.8M
raised

ATAWEY designs and manufactures turnkey autonomous energy solutions for isolated sites.

Jun 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Aarhus, Denmark

The easiest way to optimise energy consumption in public and commercial buildings.

Jun 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Baton Rouge, United States
$300K
raised

Allied Power is a full-service provider of power plant services spanning the entire asset life cycle.

Jun 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Sunnyvale, United States
$80.0M
raised

Turntide Technologies develops an electric motor system designed to drive down energy consumption.

Jun 2022
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Carlsbad, United States
$6.5M
raised

The operating system for advanced battery chemistries

May 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Turin, Italy
$1.5M
raised

i-TES designs and manufactures thermal accumulators that exploit materials.

May 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Naples, United States
$488K
raised

IntriEnergy is a startup that provides high-efficiency PV cells.

Apr 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Yarnton, United Kingdom
$25.0M
raised

First Light Fusion is an energy company that focuses on researching energy generation by inertial confinement fusion.

Apr 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Newark, United States
$3.9M
raised

NovaSolix develops an energy technology designed to generate a clean and low-cost form of energy.

Apr 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Denver, United States
$6.0M
raised

Syrcuit Energy Solutions engages in providing energy solutions to commercial, industrial, municipal, and residential properties.

Apr 2022
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$7.8M
raised

Skewb is a business consulting firm that provides digital transformation, workforce management, and energy efficiency services.

Apr 2024
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Atlanta, United States
$30.0M
raised

JTEC is a cutting-edge technology that converts a heat difference into useable power through electrochemical reactions.

Apr 2022
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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