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Energy Efficiency Startups

Updated July 2026

Companies in the energy efficiency sector developing innovative solutions and technologies.

Explore 410 recently funded energy efficiency companies with verified founder contact information and fundraising data.

Total Companies
410
Total Funding
$308.1M
Avg Funding
$12.3M
Global Reach
10
countries

Top Cities for Energy Efficiency

Seattle
Toronto
San Francisco
Philadelphia
Madrid
Porto

Recently Funded Companies

Export
Seattle, United States

BattGenie is developing software technology that enables safer, longer-lasting, and faster-charging batteries.

Feb 2023

Founder Contacts

30,000+ verified contacts

Toronto, Canada

Enersion is a researcher and developer of cooling, heating, and electricity products.

Feb 2023

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Smart building solutions that automates building and workforce efficiencies, to maximize the ROI of your real estate portfolio.

$105.0M raised
Feb 2023

Founder Contacts

30,000+ verified contacts

Philadelphia, United States

WhiteHawk Energy focuses to acquire the mineral and royalty interests.

$18.0M raised
Feb 2024

Founder Contacts

30,000+ verified contacts

Madrid, Spain

Comunidad Solar is a company that provides energy self-consumption services.

$228K raised
Feb 2025

Founder Contacts

30,000+ verified contacts

Seattle, United States

Joule Case ESS is designed to meet the mission-critical power needs of businesses, heavy industry, grid-backup, and EV charging.

$2.2M raised
Feb 2023

Founder Contacts

30,000+ verified contacts

Porto, Portugal

Universal Kraft Canada Renewables provides renewable energy solutions.

$15.0M raised
Feb 2025

Founder Contacts

30,000+ verified contacts

Whitewater, United States

Blue Line Battery is a manufacturer of rechargeable lithium-ion batteries.

$3.1M raised
Feb 2022

Founder Contacts

30,000+ verified contacts

Melbourne, Australia

Conry Tech is reinventing air-conditioning to improve comfort and make it sustainable, founded by award winning HVAC experts.

$1.9M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Boston, United States

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

$11.0M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Langley, Canada

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

$30.0M raised
Oct 2025

Founder Contacts

30,000+ verified contacts

Malmö, Sweden

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

$821K raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Toronto, Canada

Solenery is an AI-powered renewable energy platform that facilitates the adoption of solar and net-zero solutions for business premises.

$541K raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Sunnyvale, United States

LifeLabs Design is a materials science company that develops technology designed to reduce energy consumption.

$10.0M raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Sheffield, United Kingdom

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

$6.8M raised
Sep 2025

Founder Contacts

30,000+ verified contacts

Richmond, Canada

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

$21.6M raised
Aug 2025

Founder Contacts

30,000+ verified contacts

Calgary, Canada

Swirltex builds custom water treatment systems for a wide range of applications.

$3.2M raised
Aug 2025

Founder Contacts

30,000+ verified contacts

Aachen, Germany

Circonomit offers a scalable SaaS solution that enables real-time data driven environmental based decision-making.

$3.3M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Amsterdamsche Veld I, The Netherlands

Dexter offers forecasting and dispatching solutions based on AI and cloud-based technology, increasing efficiency and lowering costs.

$27.1M raised
Jul 2025

Founder Contacts

30,000+ verified contacts

Berlin, Germany

Enter provides energy audits, procurement and financing, and benchmarking for European homes.

$23.2M raised
Jun 2025

Founder Contacts

30,000+ verified contacts

Boston, United States

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

$4.8M raised
Jun 2025

Founder Contacts

30,000+ verified contacts

Cologne, Germany

Lumoview digitizes buildings in 2 seconds per room and empowers owners to improve their buildings and reduce CO2 emissions.

$3.4M raised
Jun 2025

Founder Contacts

30,000+ verified contacts

Tel Aviv, Israel

REplace is a tool for constructing renewable energy projects that makes determining the site of a solar or wind greenfield project simple.

$2.1M raised
May 2025

Founder Contacts

30,000+ verified contacts

La Rinconada, Spain

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

$13.6M raised
May 2025

Founder Contacts

30,000+ verified contacts

Hamburg, Germany

Pydro is a Hamburg-based company that aims to become an integrated solution provider for smart water networks.

$1.1M raised
May 2025

Founder Contacts

30,000+ verified contacts

Showing 201 to 225 of 410 companies

About the Energy Efficiency Startup Ecosystem

The energy efficiency sector is an active area of startup innovation and venture capital investment. Companies in this space are developing new technologies, platforms, and services that address evolving market needs and create new business opportunities.

Funding Trends in Energy Efficiency

Energy Efficiency companies raise capital across various funding stages, from early seed rounds to late-stage growth financing. Investor interest in this sector is driven by the size of the addressable market, the pace of technology adoption, and the potential for scalable business models.

Growth Outlook

The energy efficiency sector is expected to continue evolving as technology advances, market dynamics shift, and new opportunities emerge. Companies that demonstrate strong product-market fit, efficient growth, and clear competitive advantages are well-positioned to attract continued investment.

Energy Efficiency Funding Breakdown

Here is how funding is distributed among the 410 energy efficiency companies tracked in the VCBacked database.

Average Funding
$12.3M
Total Funding Tracked
$308.1M
Countries Represented
10

Distribution by Funding Stage

Other25 companies

Top Cities for Energy Efficiency

1.Seattle
2 companies$2.2M
2.Toronto
2 companies$541K
3.Boston
2 companies$15.8M
4.San Francisco
1 companies$105.0M
5.Philadelphia
1 companies$18.0M

Related Industries

Companies in the energy efficiency sector often overlap with or complement businesses in adjacent industries. Exploring related verticals can help you discover additional companies, identify partnership opportunities, and understand the broader competitive landscape.

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410 Energy Efficiency Startups (2026) — Recently Funded Companies, Investors & Rounds | VCBacked