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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
$277.0M
Avg Funding
$11.1M
Global Reach
8
countries

Top Cities for Energy Efficiency

Madison
Walnut Creek
Mill Valley
Lund
Stockholm
New York

Recently Funded Companies

Export
Madison, United States

Realta Fusion develops fusion energy technology for the production of industrial heat and power.

$36.0M raised
May 2025

Founder Contacts

30,000+ verified contacts

Walnut Creek, United States

Energy Efficiency, Hospitality, SaaS, IoT, Smart Buildings

$2.1M raised
Apr 2025

Founder Contacts

30,000+ verified contacts

Mill Valley, United States

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

$12.3M raised
Apr 2025

Founder Contacts

30,000+ verified contacts

Lund, Sweden

Emulate provides SaaS for utilities to offer behind-the-meter services and optimize demand flexibility with virtual battery technology.

$5.5M raised
Apr 2025

Founder Contacts

30,000+ verified contacts

Stockholm, Sweden

Providing scalable building & business energy optimizations, in balance with energy providers & distributors.

$600K raised
Apr 2025

Founder Contacts

30,000+ verified contacts

New York, United States

257 is a data platform providing home energy insights and tools.

$9.2M raised
Mar 2025

Founder Contacts

30,000+ verified contacts

Raleigh, United States

Clean, secure, reliable power technology based on solid-state transformers (SST) to revolutionize AI datacenters, microgrids, EV charging.

$20.0M raised
Mar 2025

Founder Contacts

30,000+ verified contacts

Copenhagen, Denmark

Developing intelligent electrical panels powered by an AI energy cloud

$2.5M raised
Jan 2025

Founder Contacts

30,000+ verified contacts

Madrid, Spain

Nido provides heat pump installation in the residential sector.

$5.2M raised
Jan 2025

Founder Contacts

30,000+ verified contacts

South Burlington, United States

Resonant Link delivers the world's fastest and easiest to use wireless charging for medical devices, consumer electronics, and EVs.

$3.4M raised
Jan 2025

Founder Contacts

30,000+ verified contacts

Gallen, Germany

Smarli specializes in smart house solutions and provides a versatile system for both new building and retrofitting existing homes.

$773K raised
Jan 2025

Founder Contacts

30,000+ verified contacts

Aix-en-provence, France

HEXANA is an energy platform that combines flexible sodium-cooled fast neutron reactors with a thermal management system.

$15.6M raised
Jan 2025

Founder Contacts

30,000+ verified contacts

Munchen, Germany

Ecoplanet is an AI-powered energy management platform that helps industrial enterprises in their energy transition.

$16.7M raised
Jan 2025

Founder Contacts

30,000+ verified contacts

Toronto, Canada

Cleantech and energy SaaS

$2.5M raised
Jan 2025

Founder Contacts

30,000+ verified contacts

Menlo Park, United States

Epic Charging is a leading B2B SaaS EV charging software company specifically designed to address the critical issues of EVSE uptime.

$2.5M raised
Jan 2025

Founder Contacts

30,000+ verified contacts

Sunnyvale, United States

Mojave Energy Systems produces novel liquid desiccant systems for HVAC.

$9.5M raised
Dec 2024

Founder Contacts

30,000+ verified contacts

London, United Kingdom

CleanTech and energy optimisation

$3.3M raised
Nov 2024

Founder Contacts

30,000+ verified contacts

Marina Del Rey, United States

IoT; Sensors, Smart Building, Energy Efficiency

$125K raised
Nov 2024

Founder Contacts

30,000+ verified contacts

Somerville, United States

Transaera develops energy-efficient air conditioning systems using innovative desiccant materials.

$8.2M raised
Nov 2024

Founder Contacts

30,000+ verified contacts

Stockholm, Sweden

Developing knowledge and AI to efficiently deploy electricity flexibility

$21.8M raised
Oct 2024

Founder Contacts

30,000+ verified contacts

San Francisco, United States

HomeBoost operates as a home energy platform.

$4.0M raised
Oct 2024

Founder Contacts

30,000+ verified contacts

New York, United States

Windmill develops modern, smart, eco-friendly air products and tech.

$5.0M raised
Oct 2024

Founder Contacts

30,000+ verified contacts

San Francisco, United States

GlacierGrid deploys innovative energy-efficient solutions to save restaurants thousands of dollars per location per year.

$5.0M raised
Oct 2024

Founder Contacts

30,000+ verified contacts

Houston, United States

Vaulted Deep provides proven technology solutions for permanent carbon removal to promote local environmental and community health.

$32.3M raised
Oct 2024

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.

$53.0M raised
Sep 2024

Founder Contacts

30,000+ verified contacts

Showing 226 to 250 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
$11.1M
Total Funding Tracked
$277.0M
Countries Represented
8

Distribution by Funding Stage

Other25 companies

Top Cities for Energy Efficiency

1.Stockholm
2 companies$22.4M
2.New York
2 companies$14.2M
3.San Francisco
2 companies$9.0M
4.Houston
2 companies$85.3M
5.Madison
1 companies$36.0M

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