# Green Buildings Europe Market Map 2026: 73 Startups in 3 Segments > 73 European green buildings startups mapped in 3 segments: heat pumps and HVAC, retrofit and insulation and building energy software and more. Source: https://millionrounds.com/market-maps/green-buildings-europe-market-map (Millionrounds; every figure on the page links to its filing or article) ## Heat pumps and HVAC 37 - [Elvy](https://millionrounds.com/company/elvy) - [*RE* Rotherham Energy](https://millionrounds.com/company/rotherham-energy) - [Rendesco](https://millionrounds.com/company/rendesco) - [*BE* Bradford Energy](https://millionrounds.com/company/bradford-energy) - [HeatTransformers](https://millionrounds.com/company/heattransformers) - [Kensa Contracting](https://millionrounds.com/company/kensa-contracting) - [ecop Technologies GmbH](https://millionrounds.com/company/ecop-technologies-gmbh) - [GALVANY](https://millionrounds.com/company/galvany) - [Artus Air](https://millionrounds.com/company/artus-air) - [Powered Now](https://millionrounds.com/company/powered-now) - [Boldr](https://millionrounds.com/company/boldr) - [Vamo](https://millionrounds.com/company/vamo) - [Ecair](https://millionrounds.com/company/ecair) - [Montamo](https://millionrounds.com/company/montamo) - [Ecovision](https://millionrounds.com/company/ecovision) - [Podero](https://millionrounds.com/company/podero) - [Hysopt](https://millionrounds.com/company/hysopt) - [EQUIUM](https://millionrounds.com/company/equium) - [nuuEnergy](https://millionrounds.com/company/nuuenergy) - [Bisly](https://millionrounds.com/company/bisly) - [Thermotech](https://millionrounds.com/company/thermotech) - [Installio](https://millionrounds.com/company/installio) - [Nusku](https://millionrounds.com/company/nusku) - [Airthium](https://millionrounds.com/company/airthium) +13 more ## Retrofit and insulation 18 - [Thermulon](https://millionrounds.com/company/thermulon) - [Greener Solutions Group](https://millionrounds.com/company/greener-solutions-group) - [VARM](https://millionrounds.com/company/varm) - [Keey Aerogel](https://millionrounds.com/company/keey-aerogel) - [Mykor](https://millionrounds.com/company/mykor) - [Fiberwood](https://millionrounds.com/company/fiberwood) - [Furbnow](https://millionrounds.com/company/furbnow) - [Tallarna](https://millionrounds.com/company/tallarna) - [Dragonfly Insulation](https://millionrounds.com/company/dragonfly-insulation) - [Klevio](https://millionrounds.com/company/klevio) - [*CA* Carbon Air](https://millionrounds.com/company/carbon-air) - [ENVIOTECH](https://millionrounds.com/company/enviotech) - [Protio](https://millionrounds.com/company/protio) - [Sisaltech](https://millionrounds.com/company/sisaltech) - [eyeGauge](https://millionrounds.com/company/eyegauge) - [Wull Technologies](https://millionrounds.com/company/wull-technologies) - [renooble](https://millionrounds.com/company/renooble) - [Green Earth Aerogel Technologies](https://millionrounds.com/company/green-earth-aerogel-technologies) ## Building energy software 18 - [Haltian](https://millionrounds.com/company/haltian) - [Fabriq](https://millionrounds.com/company/fabriq) - [Metrikus](https://millionrounds.com/company/metrikus) - [Enerbrain](https://millionrounds.com/company/enerbrain) - [LAIIER](https://millionrounds.com/company/laiier) - [OpenSensors](https://millionrounds.com/company/opensensors) - [Bsit](https://millionrounds.com/company/bsit) - [Octopus Lab](https://millionrounds.com/company/octopus-lab) - [InUse](https://millionrounds.com/company/inuse) - [Ecomer data](https://millionrounds.com/company/ecomer-data) - [ZiggyTec](https://millionrounds.com/company/ziggytec) - [EnergieIP](https://millionrounds.com/company/energieip) - [unifi.id](https://millionrounds.com/company/unifi-id) - [QwikSense](https://millionrounds.com/company/qwiksense) - [TapHome](https://millionrounds.com/company/taphome) - [Asset Mapping](https://millionrounds.com/company/asset-mapping) - [PoiLabs](https://millionrounds.com/company/poilabs) - [EINBLIQ.IO](https://millionrounds.com/company/einbliq-io) ## Segment by segment ### Heat pumps and HVAC 37 startups · $828M raised - [**Elvy**](https://millionrounds.com/company/elvy) Elvy is a Stockholm-based energytech startup founded in 2023, specializing in AI-optimized, subscription-based home energy systems. Sweden $595M - [*RE* **Rotherham Energy**](https://millionrounds.com/company/rotherham-energy) Rotherham Energy provides plumbling, heating, and air conditioning installation. United Kingdom $31M - [**Rendesco**](https://millionrounds.com/company/rendesco) Rendesco's mission is to transform the heating business by creating geothermal networks using ground-source heat pump technology. United Kingdom $21M - [*BE* **Bradford Energy**](https://millionrounds.com/company/bradford-energy) Bradford Energy offers an air source heat pump heat network. United Kingdom $20M - [**HeatTransformers**](https://millionrounds.com/company/heattransformers) HeatTransformers is a Netherlands-based technology company founded in 2018, focused on hybrid and all-electric heat pump solutions. Netherlands $16M - [**Kensa Contracting**](https://millionrounds.com/company/kensa-contracting) Kensa Contracting is a consulting firm that design, supply, install, own and operate shared ground heat pumps for various projects. United Kingdom $14M - [**ecop Technologies GmbH**](https://millionrounds.com/company/ecop-technologies-gmbh) ecop Technologies GmbH is an Austrian clean-tech company founded in 2007, with its establishment in Vienna noted in 2011. Austria $12M - [**GALVANY**](https://millionrounds.com/company/galvany) GALVANY is a Green-Tech company based in Berlin that focuses on the heat transition. Germany $12M ### Retrofit and insulation 18 startups · $362M raised - [**Thermulon**](https://millionrounds.com/company/thermulon) Thermulon has developed a novel chemical pathway to produce building insulation materials. United Kingdom $158M - [**Greener Solutions Group**](https://millionrounds.com/company/greener-solutions-group) Greener Solutions Group specializes in retrofit design and assessment services. United Kingdom $131M - [**VARM**](https://millionrounds.com/company/varm) VARM is a prominent ClimateTech startup based in Berlin, Germany, specializing in building insulation. Germany $26M - [**Keey Aerogel**](https://millionrounds.com/company/keey-aerogel) Keey Aerogel is a French nanotechnology company founded in 2015 by Francisco Ruiz. France $19M - [**Mykor**](https://millionrounds.com/company/mykor) Mykor is a UK-based biotechnology and advanced materials company founded in 2021. United Kingdom $8.4M - [**Fiberwood**](https://millionrounds.com/company/fiberwood) Fiberwood is a new eco-friendly wood fiber insulation that can be used for a variety of purposes and which has excellent insulation values. Finland $3.6M - [**Furbnow**](https://millionrounds.com/company/furbnow) Furbnow is a home energy efficiency and retrofit company based in Birmingham, England. United Kingdom $3.6M - [**Tallarna**](https://millionrounds.com/company/tallarna) Tallarna is a climate tech and finance platform focused on decarbonization in the built environment. United Kingdom $3.1M ### Building energy software 18 startups · $93M raised - [**Haltian**](https://millionrounds.com/company/haltian) Haltian is a global Internet of Things (IoT) company based in Oulu, Finland, founded in 2012 by former Nokia engineers. Finland $29M - [**Fabriq**](https://millionrounds.com/company/fabriq) Fabriq is an IoT platform for energy, resource and smart building data for smart connected spaces France $26M - [**Metrikus**](https://millionrounds.com/company/metrikus) Metrikus is a smart building software platform founded in 2019 and based in London. United Kingdom $7.7M - [**Enerbrain**](https://millionrounds.com/company/enerbrain) Enerbrain is an Italian climate tech company founded in 2015 and based in Turin. Italy $6.2M - [**LAIIER**](https://millionrounds.com/company/laiier) LAIIER is a smart building technology company based in London, UK, specializing in liquid leak detection and infrastructure intelligence. United Kingdom $4.0M - [**OpenSensors**](https://millionrounds.com/company/opensensors) OpenSensors is a London-based technology company that specializes in Smart Building Management, Workspace Optimization, and IoT solutions. United Kingdom $4.0M - [**Bsit**](https://millionrounds.com/company/bsit) BSIT encompasses multiple organizations with distinct focuses. Belgium $3.3M - [**Octopus Lab**](https://millionrounds.com/company/octopus-lab) Octopus Lab is a French deep tech company focused on predictive software solutions that improve indoor air quality (IAQ), energy e France $3.1M **How this map is made.** Every startup here has raised money in rounds we track, and is based in Europe. It joins the map when its sectors, read from its rounds, or the opening of its own description say it works in green buildings, and goes to the first segment whose words it carries. Each segment shows its best-funded first. Rebuilt nightly; updated 15 November 2026. ## More market maps [All maps](https://millionrounds.com/market-maps) [Market map **Green buildings market map** 185 startups · 4 segments · $4.6B](https://millionrounds.com/market-maps/green-buildings-market-map)[Market map · United States **Green buildings market map: United States** 94 startups · 3 segments · $3.2B](https://millionrounds.com/market-maps/green-buildings-united-states-market-map)[New wave **New green buildings startups, founded 2020 on** 53 startups · 3 segments · $1.2B](https://millionrounds.com/market-maps/new-green-buildings-startups-market-map)[Market map · United Kingdom **Green buildings market map: United Kingdom** 35 startups · 3 segments · $465M](https://millionrounds.com/market-maps/green-buildings-united-kingdom-market-map)[Investors map **Who invests in green buildings** 31 investors · 3 segments](https://millionrounds.com/market-maps/green-buildings-investors-map)[Market map · Europe **Fintech market map: Europe** 409 startups · 8 segments · $35B](https://millionrounds.com/market-maps/fintech-europe-market-map) ## Who backs green buildings? 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