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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
$4.0B
Avg Funding
$160.0M
Global Reach
8
countries

Top Cities for Energy Efficiency

Førde
New York
Houston
Laval
Brooklyn
Boston

Recently Funded Companies

Export
Førde, Norway

Tibber is a digital electricity supplier that offers smart solutions to minimize their customers’ consumption and costs.

$99.1M raised
Mar 2022

Founder Contacts

30,000+ verified contacts

New York, United States

DPO is an energy-industry services provider through its propriety Cryptocurrency Mining as a Service solutions.

$2.5M raised
Feb 2022

Founder Contacts

30,000+ verified contacts

Houston, United States

Zeta Energy develop and commercialize safe rechargeable batteries that are higher performing, lower cost and sustainably manufactured.

$4.0M raised
Feb 2024

Founder Contacts

30,000+ verified contacts

Laval, Canada

WattByWatt is a renewable energy solution company that provides durable perovskite photovoltaic to produce efficient and reliable energy.

$975K raised
Feb 2025

Founder Contacts

30,000+ verified contacts

Brooklyn, United States

NineDot Energy develops battery storage sites and other energy solutions.

$431.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Boston, United States

GE Vernova provides energy consulting, gas power, and grid solutions.

$2.6B raised
Feb 2026

Founder Contacts

30,000+ verified contacts

München, Germany

Automating video streaming operations with ML & agents. Cutting OPEX, resolving issues faster, reducing churn and improving user experience.

$50K raised
Feb 2023

Founder Contacts

30,000+ verified contacts

Palm Beach Gardens, United States

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

$20.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Milano, Italy

Sinergy Flow enables the energy transition by developing redox flow batteries for energy storage.

$8.3M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Lleida, Spain

UniSCool is an IT consulting firm that offers energy efficiency, sustainability, heat transfer, and thermal management services.

$3.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Washington, United States

Aquicore is an information technology company that offers a cloud-based software designed for asset operations platform for the CRE sector.

Feb 2022

Founder Contacts

30,000+ verified contacts

Berlin, Germany

dsb Deutsche Sanierungsberatung provides easy and sustainable solutions for home renovations.

$3.8M raised
Feb 2025

Founder Contacts

30,000+ verified contacts

Minneapolis, United States

Nokomis Energy, an energy consulting and development firm, provides a variety of clean energy development and consulting services.

$333K raised
Feb 2025

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Millions of homes just became eligible for solar power.

$5.1M raised
Feb 2023

Founder Contacts

30,000+ verified contacts

Dartmouth, Canada

Salient Energy produces zinc-ion batteries for applications in the electrical grid.

$616K raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Raleigh, United States

DG Matrix develops solid-state power conversion systems for electric vehicle charging and distributed energy applications.

$60.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Delft, The Netherlands

MEMSYS is a Dutch startup founded as a spin-off from the Delft University of Technology.

Feb 2025

Founder Contacts

30,000+ verified contacts

Roma, Italy

Enilive is Eni's mobility transformation company focusing on integrated, decarbonized services and products.

$613.8M raised
Feb 2025

Founder Contacts

30,000+ verified contacts

New York, United States

Nuveen Green Capital offers environmentally friendly commercial real estate financing solutions.

$15.0M raised
Feb 2025

Founder Contacts

30,000+ verified contacts

Zürich, Switzerland

Optiml develops software that supports real estate decarbonization and energy transition planning.

$9.6M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Arosteguieta, Spain

Optimitive provides AI based real time efficiency improvement optimization software for resource intensive process industries

$5.9M raised
Feb 2026

Founder Contacts

30,000+ 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

Founder Contacts

30,000+ verified contacts

Houston, United States

Utility Global is an off-gas-to-value company that reduces emissions and improves energy efficiency through clean energy generation systems.

$100.0M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Denver, United States

Zero Homes is a technology company that develops an end-to-end digital platform that supports homeowners and contractors.

$16.8M raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Port Coquitlam, Canada

Sharc energy is a renewable energy company that recovers heat from wastewater to provide water heating and space conditioning.

$440K raised
Feb 2026

Founder Contacts

30,000+ verified contacts

Showing 176 to 200 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
$160.0M
Total Funding Tracked
$4.0B
Countries Represented
8

Distribution by Funding Stage

Other25 companies

Top Cities for Energy Efficiency

1.New York
2 companies$17.5M
2.Houston
2 companies$104.0M
3.Førde
1 companies$99.1M
4.Laval
1 companies$975K
5.Brooklyn
1 companies$431.0M

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