# Green Buildings Market Map United Kingdom 2026: 35 Startups in 3 Segments > 35 green buildings startups in the United Kingdom, 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-united-kingdom-market-map (Millionrounds; every figure on the page links to its filing or article) ## Heat pumps and HVAC 18 - [*RE* Rotherham Energy](https://millionrounds.com/company/rotherham-energy) - [Rendesco](https://millionrounds.com/company/rendesco) - [*BE* Bradford Energy](https://millionrounds.com/company/bradford-energy) - [Kensa Contracting](https://millionrounds.com/company/kensa-contracting) - [Artus Air](https://millionrounds.com/company/artus-air) - [Powered Now](https://millionrounds.com/company/powered-now) - [Boldr](https://millionrounds.com/company/boldr) - [Ecovision](https://millionrounds.com/company/ecovision) - [Thermotech](https://millionrounds.com/company/thermotech) - [Installio](https://millionrounds.com/company/installio) - [Nusku](https://millionrounds.com/company/nusku) - [Pirta](https://millionrounds.com/company/pirta) - [Solar Polar](https://millionrounds.com/company/solar-polar) - [Lumo Energy](https://millionrounds.com/company/lumo-energy) - [Cosysense](https://millionrounds.com/company/cosysense) - [Mutha Cuva](https://millionrounds.com/company/mutha-cuva) - [Hex Energy](https://millionrounds.com/company/hex-energy) - [Futraheat](https://millionrounds.com/company/futraheat) ## Retrofit and insulation 11 - [Thermulon](https://millionrounds.com/company/thermulon) - [Greener Solutions Group](https://millionrounds.com/company/greener-solutions-group) - [Mykor](https://millionrounds.com/company/mykor) - [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) - [Sisaltech](https://millionrounds.com/company/sisaltech) - [Wull Technologies](https://millionrounds.com/company/wull-technologies) - [renooble](https://millionrounds.com/company/renooble) ## Building energy software 6 - [Metrikus](https://millionrounds.com/company/metrikus) - [LAIIER](https://millionrounds.com/company/laiier) - [OpenSensors](https://millionrounds.com/company/opensensors) - [unifi.id](https://millionrounds.com/company/unifi-id) - [Asset Mapping](https://millionrounds.com/company/asset-mapping) - [PoiLabs](https://millionrounds.com/company/poilabs) ## Segment by segment ### Heat pumps and HVAC 18 startups · $137M raised - [*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 - [**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 - [**Artus Air**](https://millionrounds.com/company/artus-air) Artus Air Ltd is a British technology company focused on designing, manufacturing, and distributing advanced Heating, Ventilation, United Kingdom $11M - [**Powered Now**](https://millionrounds.com/company/powered-now) Powered Now is a private SaaS company that specializes in job management software tailored for UK trade businesses, including plum United Kingdom $8.7M - [**Boldr**](https://millionrounds.com/company/boldr) Boldr Group Inc. United Kingdom $8.1M - [**Ecovision**](https://millionrounds.com/company/ecovision) Ecovision Renewable Energy designs and installs solar photovoltaics, heat pumps, biomass, solar thermal and underfloor heating services. United Kingdom $6.0M ### Retrofit and insulation 11 startups · $311M 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 - [**Mykor**](https://millionrounds.com/company/mykor) Mykor is a UK-based biotechnology and advanced materials company founded in 2021. United Kingdom $8.4M - [**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 - [**Dragonfly Insulation**](https://millionrounds.com/company/dragonfly-insulation) Dragonfly Insulation Ltd (DFI) is a UK-based company that manufactures silica aerogels. United Kingdom $1.9M - [**Klevio**](https://millionrounds.com/company/klevio) Klevio is a London-based smart technology company founded in 2016. United Kingdom $1.8M - [*CA* **Carbon Air**](https://millionrounds.com/company/carbon-air) Carbon Air creates miniature speakers and extra-thin sound insulation using highly porous materials. United Kingdom $1.5M ### Building energy software 6 startups · $17M raised - [**Metrikus**](https://millionrounds.com/company/metrikus) Metrikus is a smart building software platform founded in 2019 and based in London. United Kingdom $7.7M - [**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 - [**unifi.id**](https://millionrounds.com/company/unifi-id) Unifi.id seamlessly identifies all occupants in buildings, zone-by-zone, allowing organisations to understand their occupancy data. United Kingdom $938K - [**Asset Mapping**](https://millionrounds.com/company/asset-mapping) Asset Mapping is a London-based information technology and services company founded in 2012. United Kingdom $146K - [**PoiLabs**](https://millionrounds.com/company/poilabs) PoiLabs is the inclusive indoor positioning platform for smart buildings. United Kingdom $100K **How this map is made.** Every startup here has raised money in rounds we track, and is based in United Kingdom. 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)[Market map · Europe **Green buildings market map: Europe** 73 startups · 3 segments · $1.3B](https://millionrounds.com/market-maps/green-buildings-europe-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)[Investors map **Who invests in green buildings** 31 investors · 3 segments](https://millionrounds.com/market-maps/green-buildings-investors-map)[Ecosystem map · United Kingdom **United Kingdom startup ecosystem map** 4,576 startups · 12 sectors · $153B](https://millionrounds.com/market-maps/united-kingdom-startup-ecosystem-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)