# Green Buildings Market Map 2026: 185 Startups in 4 Segments > Market map of 185 green buildings startups worldwide in 4 segments, from heat pumps and HVAC, building energy software and retrofit and insulation on. Source: https://millionrounds.com/market-maps/green-buildings-market-map (Millionrounds; every figure on the page links to its filing or article) ## Heat pumps and HVAC 97 - [Elvy](https://millionrounds.com/company/elvy) - [XOi](https://millionrounds.com/company/xoi) - [Avoca](https://millionrounds.com/company/avoca) - [75F](https://millionrounds.com/company/75f) - [Blue Box](https://millionrounds.com/company/blue-box) - [Broccoli AI](https://millionrounds.com/company/broccoli-ai) - [CoolSys](https://millionrounds.com/company/coolsys) - [Optimum Energy](https://millionrounds.com/company/optimum-energy) - [Probook](https://millionrounds.com/company/probook) - [*RE* Rotherham Energy](https://millionrounds.com/company/rotherham-energy) - [Topline Pro](https://millionrounds.com/company/topline-pro) - [Interplay Learning](https://millionrounds.com/company/interplay-learning) - [PipeDreams](https://millionrounds.com/company/pipedreams) - [Cala Systems](https://millionrounds.com/company/cala-systems) - [Linear Labs](https://millionrounds.com/company/linear-labs) - [Rendesco](https://millionrounds.com/company/rendesco) - [*BE* Bradford Energy](https://millionrounds.com/company/bradford-energy) - [Zero Homes](https://millionrounds.com/company/zero-homes) - [HeatTransformers](https://millionrounds.com/company/heattransformers) - [7AC Technologies](https://millionrounds.com/company/7ac-technologies) - [Service 1st Financial](https://millionrounds.com/company/service-1st-financial) - [Catapult Finance](https://millionrounds.com/company/catapult-finance) - [Kensa Contracting](https://millionrounds.com/company/kensa-contracting) - [Helix Earth](https://millionrounds.com/company/helix-earth) +73 more ## Building energy software 44 - [View](https://millionrounds.com/company/view) - [R-Zero](https://millionrounds.com/company/r-zero) - [KODE Labs](https://millionrounds.com/company/kode-labs) - [Haltian](https://millionrounds.com/company/haltian) - [Recurve](https://millionrounds.com/company/recurve) - [Fabriq](https://millionrounds.com/company/fabriq) - [*E* EPS](https://millionrounds.com/company/eps) - [Site 1001](https://millionrounds.com/company/site-1001) - [Neeve](https://millionrounds.com/company/neeve) - [Terion](https://millionrounds.com/company/terion) - [Spintly](https://millionrounds.com/company/spintly) - [Metrikus](https://millionrounds.com/company/metrikus) - [Switch Automation](https://millionrounds.com/company/switch-automation) - [Cohesion](https://millionrounds.com/company/cohesion) - [Enerbrain](https://millionrounds.com/company/enerbrain) - [Carson](https://millionrounds.com/company/carson) - [WegoWise](https://millionrounds.com/company/wegowise) - [PlotWatt](https://millionrounds.com/company/plotwatt) - [Wayleadr](https://millionrounds.com/company/wayleadr) - [OpenSensors](https://millionrounds.com/company/opensensors) - [LAIIER](https://millionrounds.com/company/laiier) - [Ekotrope](https://millionrounds.com/company/ekotrope) - [Viking Cold Solutions](https://millionrounds.com/company/viking-cold-solutions) - [Logical Buildings](https://millionrounds.com/company/logical-buildings) +20 more ## Retrofit and insulation 41 - [Thermulon](https://millionrounds.com/company/thermulon) - [Greener Solutions Group](https://millionrounds.com/company/greener-solutions-group) - [Wrightspeed](https://millionrounds.com/company/wrightspeed) - [Intramotev](https://millionrounds.com/company/intramotev) - [Vendscreen](https://millionrounds.com/company/vendscreen) - [VARM](https://millionrounds.com/company/varm) - [OROS Labs](https://millionrounds.com/company/oros-labs) - [Chemix](https://millionrounds.com/company/chemix) - [Keey Aerogel](https://millionrounds.com/company/keey-aerogel) - [Mykor](https://millionrounds.com/company/mykor) - [CleanFiber](https://millionrounds.com/company/cleanfiber) - [Lapolla Industries](https://millionrounds.com/company/lapolla-industries) - [Fiberwood](https://millionrounds.com/company/fiberwood) - [Furbnow](https://millionrounds.com/company/furbnow) - [Tallarna](https://millionrounds.com/company/tallarna) - [Yan Engines](https://millionrounds.com/company/yan-engines) - [Oros Apparel](https://millionrounds.com/company/oros-apparel) - [Dragonfly Insulation](https://millionrounds.com/company/dragonfly-insulation) - [Klevio](https://millionrounds.com/company/klevio) - [Last Lock](https://millionrounds.com/company/last-lock) - [Koolboks](https://millionrounds.com/company/koolboks) - [*CA* Carbon Air](https://millionrounds.com/company/carbon-air) - [ENVIOTECH](https://millionrounds.com/company/enviotech) - [Protio](https://millionrounds.com/company/protio) +17 more ## Low-carbon building materials 3 - [NanoTech Materials](https://millionrounds.com/company/nanotech-materials) - [*N* Nanostellar](https://millionrounds.com/company/nanostellar) - [*QS* Quartz Systems](https://millionrounds.com/company/quartz-systems) ## Segment by segment ### Heat pumps and HVAC 97 startups · $1.8B 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 - [**XOi**](https://millionrounds.com/company/xoi) The only digital tool your techs need on a jobsite, XOi is built for HVAC, Plumbing, Electrical, Construction, Kitchen Equipment, and more. United States $230M - [**Avoca**](https://millionrounds.com/company/avoca) Avoca is an AI platform that enhances customer engagement, sales, and service operations for businesses in the service economy, pa United States $125M - [**75F**](https://millionrounds.com/company/75f) 75F is a predictive and proactive IoT-based building automation system that addresses HVAC, lighting, and equipment control needs. United States $63M - [**Blue Box**](https://millionrounds.com/company/blue-box) Blue Box is a Dallas-based HVAC technology company dedicated to enhancing HVAC coil performance through a patented bio-treatment approach. United States $54M - [**Broccoli AI**](https://millionrounds.com/company/broccoli-ai) Broccoli AI is a technology company that specializes in AI-powered voice assistant solutions for home service businesses. United States $52M - [**CoolSys**](https://millionrounds.com/company/coolsys) CoolSys is a market refrigeration and HVAC companies. United States $40M - [**Optimum Energy**](https://millionrounds.com/company/optimum-energy) Optimum Energy provides energy optimization software solutions that enable enterprise companies to reduce their HVAC expenses. United States $38M ### Building energy software 44 startups · $2.2B raised - [**View**](https://millionrounds.com/company/view) View is a smart building technology company that produces smart windows that adjusts in response to external conditions. United States $1.9B - [**R-Zero**](https://millionrounds.com/company/r-zero) R-Zero is a San Francisco-based smart building technology company founded in 2020. United States $105M - [**KODE Labs**](https://millionrounds.com/company/kode-labs) KODE Labs is a smart building technology company based in Detroit, founded in 2017. United States $30M - [**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 - [**Recurve**](https://millionrounds.com/company/recurve) Recurve Analytics, Inc. United States $26M - [**Fabriq**](https://millionrounds.com/company/fabriq) Fabriq is an IoT platform for energy, resource and smart building data for smart connected spaces France $26M - [*E* **EPS**](https://millionrounds.com/company/eps) EPS Corp. United States $20M - [**Site 1001**](https://millionrounds.com/company/site-1001) Site 1001 is an AI-driven performance and operations platform for smart buildings. United States $17M ### Retrofit and insulation 41 startups · $542M 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 - [**Wrightspeed**](https://millionrounds.com/company/wrightspeed) Wrightspeed provides electric drivetrains as retrofit kits to the heavy-duty truck market. United States $43M - [**Intramotev**](https://millionrounds.com/company/intramotev) Intramotev is a St. United States $38M - [**Vendscreen**](https://millionrounds.com/company/vendscreen) VendScreen is a Portland-based company founded in 2011 that specializes in retrofit touchscreen technology for vending machines. United States $33M - [**VARM**](https://millionrounds.com/company/varm) VARM is a prominent ClimateTech startup based in Berlin, Germany, specializing in building insulation. Germany $26M - [**OROS Labs**](https://millionrounds.com/company/oros-labs) OROS Labs is a materials technology company based in Portland, Oregon, founded in 2015 by Rithvik Venna and Michael Markesbery, wh United States $22M - [**Chemix**](https://millionrounds.com/company/chemix) Chemix has developed and commercialised a heat dissipation and insulation material. Japan $20M ### Low-carbon building materials 3 startups · $50M raised - [**NanoTech Materials**](https://millionrounds.com/company/nanotech-materials) NanoTech Materials, Inc. United States $29M - [*N* **Nanostellar**](https://millionrounds.com/company/nanostellar) Nanostellar delivers nano-material catalysts that improve emissions control, energy efficiency, and synthesis of chemicals and fuels. United States $13M - [*QS* **Quartz Systems**](https://millionrounds.com/company/quartz-systems) Seokyoung Systems provides a smart building complex information solution to implement an optimized city and building management system. - $7.8M **How this map is made.** Every startup here has raised money in rounds we track. 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) [**Cybersecurity** 817 startups · 9 segments · $33B](https://millionrounds.com/market-maps/cybersecurity-market-map)[**Agritech** 719 startups · 7 segments · $15B](https://millionrounds.com/market-maps/agritech-market-map)[**HR software** 664 startups · 8 segments · $13B](https://millionrounds.com/market-maps/hr-software-market-map)[**CFO tech stack** 564 startups · 6 segments · $19B](https://millionrounds.com/market-maps/cfo-tech-stack-market-map)[**Social and dating apps** 486 startups · 5 segments · $4.1B](https://millionrounds.com/market-maps/social-and-dating-apps-market-map)[**Supply chain tech** 472 startups · 7 segments · $32B](https://millionrounds.com/market-maps/supply-chain-tech-market-map) ## Who backs green buildings? Open any company for its rounds and investors, or search the investors behind these startups in the app, with filters, lists and exports. [Find their investors](https://millionrounds.com/login?join=1&next=/app/investors)[Top lists](https://millionrounds.com/top-lists)