Top list · Worldwide

Building energy efficiency startups worldwide

18 building energy efficiency startups worldwide have raised money in rounds we track. These are the 18 that have raised the most, $67M between them, with the United States the most common home.

$67Mraised by these 18
18on our record in all
United Statesmost common home
Charge Roboticsraised the most
  1. 1Charge RoboticsCharge Robotics is dedicated to advancing the renewable energy sector by automating the labor-intensive stages of solar construction.

    Charge Robotics is dedicated to advancing the renewable energy sector by automating the labor-intensive stages of solar construction.

    Founded 2021San Leandro, United States$17Mlast round Aug 2024
  2. 2re.greenre-green is a Frankfurt-based company founded in 2023 that specializes in enhancing the energy efficiency and ESG compliance of commercial real estate.

    re-green is a Frankfurt-based company founded in 2023 that specializes in enhancing the energy efficiency and ESG compliance of commercial real estate.

    Founded 2023Atlanta, Brazil$14Mlast round May 2025
  3. 3TerionTerion is an AI-based energy management software company based in Copenhagen, Denmark.

    Terion is an AI-based energy management software company based in Copenhagen, Denmark.

    Founded 2024Copenhagen, United States$11Mlast round Sept 2002
  4. 4Measurable.energymeasurable.energy is a UK-based clean-tech and PropTech company that focuses on AI-driven plug load management and energy efficiency solutions for commercial bu

    measurable.energy is a UK-based clean-tech and PropTech company that focuses on AI-driven plug load management and energy efficiency solutions for commercial bu

    Founded 2018Reading, United Kingdom$5.2Mlast round Aug 2025
  5. 5WegoWiseWegoWise is a web-based utility analytics platform that integrates big data with energy efficiency for the building performance industry.

    WegoWise is a web-based utility analytics platform that integrates big data with energy efficiency for the building performance industry.

    Founded 2010United States$4.9Mlast round May 2013
  6. 6vibooviboo is a Swiss proptech startup founded in 2022, based in Dübendorf, Switzerland.

    viboo is a Swiss proptech startup founded in 2022, based in Dübendorf, Switzerland.

    Founded 2022Duebendorf, Switzerland$4.7Mlast round Sept 2025
  7. 7Octopus LabOctopus Lab is a French deep tech company focused on predictive software solutions that improve indoor air quality (IAQ), energy efficiency, and environmental s

    Octopus Lab is a French deep tech company focused on predictive software solutions that improve indoor air quality (IAQ), energy efficiency, and environmental s

    Founded 2017La Madeleine, France$3.1Mlast round Jul 2022
  8. 8BaryonBaryon develops energy efficiency technologies with applications in building cooling, water production, cold chain, and others.

    Baryon develops energy efficiency technologies with applications in building cooling, water production, cold chain, and others.

    Founded -Wilmington, United States$2.1Mlast round Aug 2021
  9. 9Energie Solutions AirÉnergie Solutions Air (ESA) provides heat exchangers and energy efficiency for hog and fowl farming buildings.

    Énergie Solutions Air (ESA) provides heat exchangers and energy efficiency for hog and fowl farming buildings.

    Founded 2010Canada$1.0Mlast round Jan 2018
  10. 10HelicommHelicomm provides wireless communication for monitoring and control products to facilitate clean technology deployment worldwide.

    Helicomm provides wireless communication for monitoring and control products to facilitate clean technology deployment worldwide.

    Founded 2002Shindian, United States$1.0Mlast round Mar 2006
  11. 11Carnot InnovationsCarnot Innovations is a technology company based in Hong Kong, focusing on AI-driven energy efficiency and sustainability solutions for the building management sector.

    Carnot Innovations is a technology company based in Hong Kong, focusing on AI-driven energy efficiency and sustainability solutions for the building management sector.

    Founded 2018Hong Kong SAR China$800Klast round Nov 2019
  12. 12VASS TechnologiesVASS Technologies is an Italian construction and building-tech company specializing in high-efficiency roofing solutions.

    VASS Technologies is an Italian construction and building-tech company specializing in high-efficiency roofing solutions.

    Founded 2012Carmagnola, Italy$780Klast round Oct 2012
  13. 13WattblockWattblock is an Australian energy-efficiency and consulting company founded in 2014, based in Mosman, New South Wales.

    Wattblock is an Australian energy-efficiency and consulting company founded in 2014, based in Mosman, New South Wales.

    Founded 2014Sydney, Australia$551Klast round May 2015
  14. 14Cypress EnvirosystemsCypress Envirosystems, based in San Jose, California, specializes in non-invasive retrofit and digital overlay solutions for existing buildings and industrial facilities.

    Cypress Envirosystems, based in San Jose, California, specializes in non-invasive retrofit and digital overlay solutions for existing buildings and industrial facilities.

    Founded 2007San Jose, United States$466Klast round May 2013
  15. 15QwikSenseQwikSense is a Netherlands-based company that specializes in workplace environment analytics and smart building monitoring.

    QwikSense is a Netherlands-based company that specializes in workplace environment analytics and smart building monitoring.

    Founded 2014Bussum, Netherlands$291Klast round May 2015
  16. 16Whisper EnergyIoT; Sensors, Smart Building, Energy Efficiency

    IoT; Sensors, Smart Building, Energy Efficiency

    Founded -Marina Del Rey, United States$155Klast round Jul 2025
  17. 17KestrixKestrix is a climate technology and energy efficiency startup founded in 2022 by Lucy Lyons and Matt Goodridge.

    Kestrix is a climate technology and energy efficiency startup founded in 2022 by Lucy Lyons and Matt Goodridge.

    Founded 1991London, United Kingdom$136Klast round Jun 2025
  18. 18HomeWellnessHomeWellness, a virtual building science expert, facilitates decision making in improving homes' comfort, health and energy efficiency.

    HomeWellness, a virtual building science expert, facilitates decision making in improving homes' comfort, health and energy efficiency.

    Founded 2013Durham, United States$50Klast round Sept 2013
Total fundinghow the list is ranked
15 November 2026updated nightly
Rounds we tracksource: Millionrounds

Companies whose own description names this theme, ranked by the total they have raised in rounds we hold. Nobody pays to be on a list.

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