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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
$382.0M
Avg Funding
$15.3M
Global Reach
9
countries

Top Cities for Energy Efficiency

Brooklyn
Marlborough
Eresing
Lausanne
Berlin
Porto

Recently Funded Companies

Export
Brooklyn, United States

David Energy is an energy company that leverages advanced technology to transform the way electricity is consumed, managed, and distributed.

$23.0M raised
Sep 2024

Founder Contacts

30,000+ verified contacts

Marlborough, United States

LiquidStack isa liquid cooling that provides hyperscale, edge, and computing.

$20.0M raised
Sep 2024

Founder Contacts

30,000+ verified contacts

Eresing, Germany

Reverion develops reversible and carbon-negative power plants using patented biogas technology for renewable energy.

$62.1M raised
Sep 2024

Founder Contacts

30,000+ verified contacts

Lausanne, Switzerland

GraphEnergyTech focuses on the power of graphene for solar cells.

$1.3M raised
Aug 2024

Founder Contacts

30,000+ verified contacts

Berlin, Germany

Amperecloud is the leading Operating System for Renewables.

$3.6M raised
Jul 2024

Founder Contacts

30,000+ verified contacts

Porto, Portugal

24/7 virtual facility manager to fine tune your smart building, avoiding unexpected downtime and maintenance.

$1.6M raised
Jul 2024

Founder Contacts

30,000+ verified contacts

London, United Kingdom

Data analytics and IoT business serving large social landlords

$6.4M raised
Jul 2024

Founder Contacts

30,000+ verified contacts

Coimbra, Portugal

Eneida designs and develops smart sensors and artificial intelligence applications for resilient and agile low voltage grid.

$11.4M raised
Jul 2024

Founder Contacts

30,000+ verified contacts

Aix-en-provence, France

Blue Capsule Technology is a nuclear power company that develops advanced innovative reactors to produce industrial-grade heat.

$2.2M raised
Jul 2024

Founder Contacts

30,000+ verified contacts

Brunswick, United States

Electricity management and controls provider

$1.1M raised
Jun 2024

Founder Contacts

30,000+ verified contacts

Amsterdam, The Netherlands

Prets offers embedded finance, enabling homeowners to invest in energy upgrades with personalized ROI insights and flexible financing.

$1.1M raised
Jun 2024

Founder Contacts

30,000+ verified contacts

Las Vegas, United States

Terbine is here to enable and accelerate the new generation of intelligent mobility.

$150K raised
Jun 2024

Founder Contacts

30,000+ verified contacts

Denver, United States

Xcimer Energy is an inertial fusion company offering laser-driven fusion to provide cheap, abundant, and carbon-free energy.

$100.0M raised
Jun 2024

Founder Contacts

30,000+ verified contacts

Reutlingen, Germany

Reducing buildings' carbon footprint with Energy AI

$216K raised
May 2024

Founder Contacts

30,000+ verified contacts

Monrovia, United States

LiNova Energy is a developer of ultra-high energy density batteries.

$15.8M raised
Apr 2024

Founder Contacts

30,000+ verified contacts

Zurich, Switzerland

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

$2.2M raised
Apr 2024

Founder Contacts

30,000+ verified contacts

Gradignan, France

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

$37.8M raised
Mar 2024

Founder Contacts

30,000+ verified contacts

Santa Clara, United States

Expedera provider of scalable neural engine semiconductor IP.

$20.0M raised
Mar 2024

Founder Contacts

30,000+ verified contacts

New York, United States

Sealed is a residential energy efficiency startup that designs, manages, and finances home weatherization and electrification projects.

$30.0M raised
Mar 2024

Founder Contacts

30,000+ verified contacts

Vienna, Austria

NECTURE empowers businesses to unlock the full potential of fleets, seamlessly bridging the gap between mobility and energy.

$6.0M raised
Mar 2024

Founder Contacts

30,000+ verified contacts

Ilmenau, Germany

Ifesca is an AI company that enables optimal decision-making for energy companies and industry.

$2.2M raised
Mar 2024

Founder Contacts

30,000+ verified contacts

Hyires, France

Wise Integration is a developer of GaN-integrated solutions to miniaturize power supplies and improve energy efficiency.

$16.2M raised
Feb 2024

Founder Contacts

30,000+ verified contacts

Calgary, Canada

Enhanced oil recovery, carbon intensity reduction, and CO2 storage efficiency via patent-pending nanoparticle-based foam technology.

$1.5M raised
Jan 2024

Founder Contacts

30,000+ verified contacts

San Francisco, United States

Geminus is pioneering real-time intelligence for complex industrial systems.

$13.0M raised
Jan 2024

Founder Contacts

30,000+ verified contacts

Berlin, Germany

Energy autopilot for commercial buildings

$3.2M raised
Jan 2024

Founder Contacts

30,000+ verified contacts

Showing 251 to 275 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
$15.3M
Total Funding Tracked
$382.0M
Countries Represented
9

Distribution by Funding Stage

Other25 companies

Top Cities for Energy Efficiency

1.Berlin
2 companies$6.7M
2.Brooklyn
1 companies$23.0M
3.Marlborough
1 companies$20.0M
4.Eresing
1 companies$62.1M
5.Lausanne
1 companies$1.3M

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