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Energy Efficiency Startups

Updated October 2026

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

Explore 412 recently funded energy efficiency companies with verified founder contact information and fundraising data.

Total Companies
412
Total Funding
$3.3B
Avg Funding
$131.8M
Global Reach
10
countries

Top Cities for Energy Efficiency

Uji
Calgary
Scottsdale
Newcastle
Sheffield
Singapore

Recently Funded Companies

Export
Uji, Japan

Next Core Technologies is a tech company that offers prototype motor electrical and soft magnetic properties.

$13.1M raised
Mar 2026

Founder Contacts

41,000+ verified contacts

Calgary, Canada

MyHEAT helps visualize home heat loss for improved comfort, savings, and energy efficiency.

$1.6M raised
Mar 2022

Founder Contacts

41,000+ verified contacts

Scottsdale, United States

Trutankless is a public company that manufactures electric tankless water heaters.

$175K raised
Mar 2022

Founder Contacts

41,000+ verified contacts

Newcastle, Australia

Making 24/7 renewables a reality through Thermal Energy Storage.

$12.0M raised
Mar 2026

Founder Contacts

41,000+ verified contacts

Sheffield, United Kingdom

AmpliSi focuses on sustainable porous silicon anodes for lithium-ion batteries.

$2.7M raised
Mar 2026

Founder Contacts

41,000+ verified contacts

Singapore, Singapore

SOLV8 is a technology for sustainable solvent separation.

$147K raised
Mar 2022

Founder Contacts

41,000+ verified contacts

London, United Kingdom

Dodo is a platform to capture emissions and issue green loans.

$173K raised
Mar 2022

Founder Contacts

41,000+ verified contacts

San Jose, United States

Energy Internet Corporation unites engineering and hardware systems to produce efficient energy storage and renewable energy distribution.

$400K raised
Mar 2024

Founder Contacts

41,000+ verified contacts

Dublin, United States

Amber Semiconductor is a fabless semiconductor company developing advanced power management solutions for AI data centers.

$30.0M raised
Mar 2026

Founder Contacts

41,000+ verified contacts

Redwood City, United States

SolarGaps is a smart blinds that generate electricity.

Mar 2025

Founder Contacts

41,000+ verified contacts

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

41,000+ 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

41,000+ 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

41,000+ 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

41,000+ verified contacts

Brooklyn, United States

NineDot Energy develops battery storage sites and other energy solutions.

$431.0M raised
Feb 2026

Founder Contacts

41,000+ verified contacts

Boston, United States

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

$2.6B raised
Feb 2026

Founder Contacts

41,000+ 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

41,000+ 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

41,000+ 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

41,000+ 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

41,000+ 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

41,000+ 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

41,000+ verified contacts

San Francisco, United States

Millions of homes just became eligible for solar power.

$5.1M raised
Feb 2023

Founder Contacts

41,000+ verified contacts

Dartmouth, Canada

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

$616K raised
Feb 2026

Founder Contacts

41,000+ 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

41,000+ verified contacts

Showing 176 to 200 of 412 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 412 energy efficiency companies tracked in the VCBacked database.

Average Funding
$131.8M
Total Funding Tracked
$3.3B
Countries Represented
10

Distribution by Funding Stage

Other25 companies

Top Cities for Energy Efficiency

1.Uji
1 companies$13.1M
2.Calgary
1 companies$1.6M
3.Scottsdale
1 companies$175K
4.Newcastle
1 companies$12.0M
5.Sheffield
1 companies$2.7M

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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412 Energy Efficiency Startups (2026) — Recently Funded — Page 8 | VCBacked