69 Best Energy Efficiency Startups to Watch in 2024

The Definitive Seedtable Ranking of Energy efficiency Startups

We track 22,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 10 start-ups . with an aggregate funding of $1.2B. The average funding per company in this subset is $120M. The list encompasses 8 founders. 5 executives. It includes data on 13 professionals within these filtered companies.

Last update to the database: Nov 19, 2024. See changelog.

Location:

Industry:

Energy efficiency
#1
Form Energy logo

Form Energy

Form Energy develops and commercializes a low-cost battery system that can store wind and solar energy for a long duration.

Renewable energyClean technologyEnergy industry

Location:

🇺🇸 Somerville, Massachusetts

United States

Founded:

2017-01-01

Seedtable Rank:

# 42

Total Raised: $679.20M

Last Funding: $405.00M (Series F)

Key People:

  • Mateo Jaramillo - CEO
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#2
Redaptive logo

Redaptive

Redaptive is a SaaS tool for energy efficiency developed for commercial and industrial customers.

TechnologySoftwareCloud computing

Location:

🇺🇸 Denver, Colorado

United States

🇺🇸 San Francisco, California

United States

Founded:

2015-01-01

Seedtable Rank:

# 148

Total Raised: $256.60M

Last Funding: $100.00M (Unknown)

Key People:

  • Arvin Vohra - CEO
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#3
Submer logo

Submer

Sustainable immersion cooling and automation solutions provider for data centers.

Climate Tech & Green TechHardwareTechnology

Location:

🇪🇸 Barcelona, Barcelona

Spain

Founded:

2015-01-01

Employees:

101 - 250

Seedtable Rank:

# 206

Total Raised: $103.01M

Last Funding: $33.91M (Unknown)

Key People:

  • Simon Coggin - Sales Director
  • Patrick Smets - CEO
  • Pol Valls Soler - Founder
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#4
Hometree logo

Hometree

Hometree is a residential energy services provider founded in 2015 by Simon Phelan .

FinTechInsuretechProptech & Real Estate

Location:

🇬🇧 London, England

United Kingdom

🇬🇧 Londonderry County Borough, Northern Ireland

United Kingdom

Founded:

2015-01-01

Employees:

51 - 100

Seedtable Rank:

# 316

Total Raised: $74.10M

Last Funding: $65.00M (Debt Financing)

Key People:

  • Graeme Nicholas - Business Owner
  • Simon Phelan - CEO
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#5
Signol logo

Signol

Software provider for aviation and shipping industry to reduce emissions.

Software as a service (SaaS)SustainabilityEnergy efficiency

Location:

🇬🇧 London, England

United Kingdom

🇬🇧 Londonderry County Borough, Northern Ireland

United Kingdom

Founded:

2017-01-01

Seedtable Rank:

# 1756

Total Raised: $3.30M

Last Funding: $3.30M (Seed)

Key People:

  • Michael Fanning - CEO
  • Daniel White - CEO
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#6
Frequenz logo

Frequenz

Power exchange managing renewable energy production and procurement using AI, IoT, and battery storage technologies.

Climate Tech & Green TechAIEnergy & Nuclear

Location:

🇩🇪 Berlin, Berlin

Germany

Founded:

2019-01-01

Employees:

11 - 49

Seedtable Rank:

# 2528

Total Raised: $13.00M

Last Funding: $13.00M (Series A)

Key People:

  • Lars Kirchhoff - Co-Founder
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#7
Insolight logo

Insolight

Insolight is a solar panel manufacturer founded in 2015 by Laurent Coulot.

Energy & NuclearManufacturingClean technology

Location:

🇨🇭 Lausanne, Vaud

Switzerland

Founded:

2015-08-31

Employees:

11 - 49

Seedtable Rank:

# 3094

Total Raised: $10.27M

Last Funding: $4.92M (Series A)

Key People:

  • Laurent Coulot - CEO and Co Founder
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#8
ELDO (company) logo

ELDO (company)

Turnkey energy management solutions for companies in South Africa and Switzerland.

Climate Tech & Green TechConsumer SocialEnergy & Nuclear

Location:

🇿🇦 Johannesburg, Gauteng

South Africa

Employees:

11 - 49

Seedtable Rank:

# 4727

Total Raised: $3.32M

Last Funding: $3.32M (Unknown)

Key People:

  • Daniel Ghinste - Software Engineer | Co-Founder
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#9
Customcells logo

Customcells

Customcells is one of the world's leading companies in the development of special lithium-ion battery cells.

Climate Tech & Green TechEnergy & NuclearManufacturing

Location:

🇩🇪 Hamburg, Hamburg

Germany

Founded:

2013-01-01

Employees:

51 - 199

Seedtable Rank:

# 5406

Total Raised: $62.98M

Last Funding: $62.98M (Unknown)

Key People:

  • Dirk Abendroth - CEO CUSTOMCELLS
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#10
TeleSense logo

TeleSense

TeleSense is a Sunnyvale, California-based IoT sensor company providing grain storage monitoring.

Enterprise softwareTechnologySoftware

Location:

Seedtable Rank:

# 14831

View full profile
#11
Drift (energy company) logo

Drift (energy company)

Drift provides a clean energy trading platform for business and residential customers.

Renewable energySoftware engineeringClean technology

Location:

🇺🇸 Seattle, Washington

United States

Seedtable Rank:

# 14831

View full profile
#12
Stem logo

Stem

Stem is a Millbrae, California-based developer of solutions for energy consumption through a combination of data, predictive analytics, and energy storage to reduce energy costs.

TechnologyArtificial Intelligence (AI)Big data

Location:

Employees:

501 - 999

Seedtable Rank:

# 17212

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#13
Form Energy logo

Form Energy

Form Energy is a Somerville, Massachusetts-based company developing low-cost, long-duration energy storage systems.

Renewable energyClean technologyEnergy industry

Location:

Employees:

51 - 199

Seedtable Rank:

# 22559

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