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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
$218.6M
Avg Funding
$8.7M
Cities
24

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Watertown, United States

Via Separations is a technology company that develops membrane materials for modular and resource separation solutions.

Apr 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Cambridge, United Kingdom
$2.3M
raised

Pulsiv develops world-leading electronic solutions for AC to DC Power Supplies and Solar Energy applications.

Mar 2024
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Nantes, France
$1.8M
raised

Collectif Énergie is an energy management service provider which enables customers to buy and consume electricity and gas more efficiently.

Mar 2022
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Palm Beach Gardens, United States
$20.0M
raised

Ampera is a clean energy company that offers fusion-powered, subcritical breeder reactor system for nuclear energy for the AI era.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

El Segundo, United States

Radiant develops portable nuclear microreactors designed to generate electricity and heat in a compact, factory-built form.

Feb 2026
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Boston, United States
$11.0M
raised

Ekotrope provides construction planning, designing, and consulting services for new and renovated buildings.

Oct 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

$30.0M
raised

Cascadia Windows and Doors is a manufacturer of energy efficient fiberglass windows and doors.

Oct 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Malmö, Sweden
$821K
raised

Enjay Systems is a manufacturing company that develops heat-exchange equipment that recovers energy from hostile environments.

Sep 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Sheffield, United Kingdom
$6.8M
raised

mopo provides clean, affordable energy to the off-grid market in Africa.

Sep 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Richmond, Canada
$21.6M
raised

General Fusion provides commercial fusion energy by developing a magnetized target fusion (MTF) technology.

Aug 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Boston, United States
$4.8M
raised

We design, manufacture, and sell the world's first intelligent heat pump water heater.

Jun 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

$13.6M
raised

HESS Ltd. is a technological solution provider, a pioneer in creating hybrid energy storage solutions for the electrical grid

May 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Mill Valley, United States
$12.3M
raised

Recurve is an open-source SaaS platform with tools that help utilities leverage their smart meter data to measure energy usage.

Apr 2025
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

London, United Kingdom
$6.4M
raised

Data analytics and IoT business serving large social landlords

Jul 2024
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Zurich, Switzerland
$2.2M
raised

LEDCity is a energy technology company that designs and develops efficient lighting systems for commercial buildings.

Apr 2024
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Gradignan, France
$37.8M
raised

Exois develops the EVEAE - Energy Via Exhaust, an exhaust waste heat recovery technology which reduces engine fuel consumption and emissions.

Mar 2024
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Missouri City, United States
$772K
raised

Global Geophysical provides high-resolution Reservoir Grade seismic data acquisition and processing,

Dec 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Edmonton, Canada
$1.7M
raised

Adven-Industries is a high-end materials technology developer.

Dec 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Perpignan, France
$10.7M
raised

We are a main actor in the entire energy chain, from self-consumption to storage and through Smart home.

Sep 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Boulder, United States

Copper develops an energy consumption monitoring system that provides utilities with real-time grid intelligence.

May 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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41,000+ verified emails
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Sariyer, Turkey
$547K
raised

RePG Energy is a renewable energy system that offers innovative solutions and patents.

May 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Latham, United States
$640K
raised

Combined Energies is an early-stage startup commercializing residential-scale power electronic and fuel cell technology.

Mar 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Espoo, Finland
$1.5M
raised

CollectiveCrunch is a leader in AI for the forestry industry. We bring a step-change to prediction of forest inventories and carbon capture.

Mar 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Menlo Park, United States
$14.0M
raised

Gridium develops software to fine-tune maintenance operations, lower energy costs, coordinate vendors, and delight occupants.

Feb 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

Bratislava, Slovakia (Slovak Republic)
$17.4M
raised

Energy-as-a-Service, Energy Storage Management, Energy Optimization

Jan 2023
Venture - Series Unknown

Founder Contacts

41,000+ verified contacts

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59 Energy Efficiency Venture - Series Unknown Startups (October 2026) — Page 2 | VCBacked