50 Best Green Building Companies to Watch in 2026

The most prominent green building companies ranked by global prominence, funding activity, and market position. Showing the top 50 out of 369 companies tracked on Fsome.

369
Total Companies
$9.5B
Total Funding
$25.7M
Avg Funding
London
Top Location
# Company Location Employees Total Funding Last Round Last Funded
1
PassiveLogic
The first platform for generalized autonomy: powered by Quantum, PassiveLogic em…
Salt Lake City 101 - 250 $154.2M Series C 2025-09-16
2
Holcim
Holcim is a building materials and aggregates company.
Z├╝rich c 10001 max $1.4M Grant 2024-11-04
3
ENGIE North America
ENGIE North America is a renewable energy firm that focuses on the development a…
Houston 1K - 5K $1.0B Debt Financing 2024-02-28
4
Green Revolution Cooling
Green Revolution Cooling provides computer hardware manufacturing services.
Austin 11 - 50 $35.4M Series Unknown 2025-06-03
5
Eco Material Technologies
Eco Material Technologies produces and distributes low-carbon cement alternative…
South Jordan 1K - 5K $1.0B Debt Financing 2025-02-12
6
Gropyus
Creating sustainable living for everyone.
Vienna 251 - 500 $294.0M Series Unknown 2024-10-07
7
alcemy
Alcemy is a cement and concrete decarbonization startup developing predictive an…
Berlin 51 - 100 $23.6M Series Unknown 2024-07-05
8
Reneo
Reneo is the leading end-to-end asset transformation- & decarbonization platform…
Hamburg 51 - 100 $48.7M Series B 2024-03-01
9
uHoo
uHoo monitors and manages your indoor environment to help you enhance health and…
Kowloon City 11 - 50 $7.7M Debt Financing 2025-01-21
10
Iron Ox
Solving global climate through our food, grown renewably, using technology
San Carlos 51 - 100 $103.2M Series C 2021-09-22
11
RenX Enterprises
RenX Enterprises is a real estate development company specializing in projects u…
Miami 1 - 10 $16.4M Post Ipo Debt 2026-02-13
12
Nanosci
NanoSci develops patented light-powered nanotech for air purification, food pres…
Warsaw 11 - 50 $1.2M Seed 2024-06-30
13
Cycle Momentum
Cycle Momentum offers acceleration and open innovation programs dedicated to the…
Montréal 11 - 50 $23.1M Grant 2024-11-12
14
DIRTT Environmental Solutions
DIRTT Environmental Solutions specializes in industrialized construction for int…
Calgary 501 - 1K $186.7M Post Ipo Debt 2025-12-11
15
Factored
Rent-backed financing
London 1 - 10 $28.0M Debt Financing 2025-06-24
16
Purpose Green
Purpose Green operates as a climatetech company.
Berlin 51 - 100 $18.5M Seed 2024-10-07
17
Novelda
Novelda is a sensor company specializing in nanoscale wireless low-power ultra w…
Oslo 101 - 250 $100.0M Series F 2021-12-03
18
DMAT
DMAT develops highly-advanced concrete formulas that increase durability and red…
Udine 1 - 10 $4.5M Seed 2025-10-21
19
BuildingLens
We democratize Facility Management for Priority Populations.
Portland 1 - 10 $250K Non Equity Assistance 2023-01-09
20
Prometheus Materials
Prometheus Materials develops bio-cement with zero carbon emissions to reduce th…
Boulder 11 - 50 $18.0M Grant 2024-11-07
21
Dynamhex
Target climate action. Measure impact.
Baltimore 11 - 50 $1.6M Grant 2022-03-03
22
CIM
CIM creates innovative building analytics software that helps run large building…
Sydney 101 - 250 $10.9M Series A 2022-09-19
23
Vessel
Building Technologies
New York 11 - 50 $20.0M Series A 2023-06-30
24
Apsiyon
Apsiyon is a cloud-based all-in-one management platform designed for property ma…
Istanbul 101 - 250 $10.0M Series A 2020-03-13
25
Lumoview Building Analytics
Lumoview digitizes buildings in 2 seconds per room and empowers owners to improv…
Cologne 11 - 50 $6.1M Seed 2025-06-02
26
ecoLocked
ecoLocked is turning buildings into carbon sinks by developing CO2-negative buil…
Berlin 11 - 50 $6.3M Grant 2024-07-23
27
Coalition for Green Capital
Coalition for Green Capital is a non-profit company that has a goal of accelerat…
Washington 1 - 10 $5.0B Grant 2024-04-04
28
Carbonaide
We remove carbon dioxide from circulation while making concrete better.
Joensuu 1 - 10 $2.0M Seed 2023-03-28
29
HeyCharge
HeyCharge provides charging infrastructure, payment systems, and installation fo…
Munich 11 - 50 $7.8M Grant 2026-02-18
30
Greeneration
Greeneration is a farm-to-kitchen supplier.
Dubai 11 - 50 $5.0M Corporate Round 2024-10-09
31
Alvéole
Alvéole helps businesses in beekeeping, building ecological awareness, and food …
Montréal 101 - 250 $17.4M Debt Financing 2023-10-05
32
Hempitecture
Hempitecture develops sustainable materials, equipment, and systems for construc…
Ketchum 11 - 50 $8.4M Grant 2024-11-06
33
Lun
Lun builds software to decarbonise homes faster.
Copenhagen 11 - 50 $11.2M Seed 2023-03-22
34
Olenox Industries
Olenox Industries is a modular solutions company that builds innovative structur…
Jacksonville 11 - 50 $15.9M Post Ipo Equity 2025-04-14
35
MARCLEY
MARCLEY ownes & manages the energy source within multi-family buildings in order…
Hanover 11 - 50 $5.4M Seed 2024-07-30
36
Conry Tech
Conry Tech is reinventing air-conditioning to improve comfort and make it sustai…
Melbourne 11 - 50 $3.5M Seed 2025-10-14
37
EcoSync
EcoSync offers an intelligent platform which helps commercial buildings to stop …
Oxford 11 - 50 $4.6M Equity Crowdfunding 2023-11-03
38
Cambridge Electric Cement
Cambridge Electric Cement is a sustainable cement start-up.
Cambridge 1 - 10 $2.9M Non Equity Assistance 2025-03-25
39
Soletair Power
Soletair Power develops modular direct air capture systems to capture carbon dio…
Lappeenranta 11 - 50 $3.7M Series Unknown 2024-06-05
40
The VERT
An innovative SaaS platform empowering construction industry professionals to re…
London 1 - 10 $2.2M Pre Seed 2024-09-01
41
INOVUES
Revitalizing Windows for Better Buildings. Without Replacement. Without Disrupti…
Houston 11 - 50 $5.5M Non Equity Assistance 2022-08-01
42
Solarstone
Solarstone develops and produces building-integrated PV (BIPV) solutions that pr…
Viljandi 11 - 50 $10.7M Series A 2022-07-20
43
Green Badger
Green Badger provides cloud-based automation and compliance solutions for the gr…
Savannah 1 - 10 $1.3M Seed 2022-06-15
44
QEA Tech
QEA Tech is a software company that combines AI, drone technology, and thermal i…
Toronto 11 - 50 $3.3M Seed 2023-04-19
45
Greenfluidics
Transforming commercial façades with microalgae and AI into icons of sustainabil…
Dover 1 - 10 $127K Grant 2025-02-01
46
Net Zero Build
Net Zero Build offers an AI-driven platform designed to streamline and automate …
Riyadh 1 - 10 $331K Pre Seed 2025-01-30
47
NOVO
Digital analysis, planning and financing of energy renovation for real estate
Berlin 11 - 50 $1.2M Pre Seed 2023-09-27
48
RED Horticulture
RED Horticulture specializes in horticulture LED lighting systems, photobiology …
Lyon 11 - 50 $18.6M Series A 2023-11-21
49
Sensibo
Sensibo is building an indoor climate and air quality consumer brand.
Redwood City 11 - 50 $3.4M Seed 2016-09-13
50
Sisalwool - part of Sisaltech Ltd, a Certified B CorpΓäó
Sisalwool - The World's Friendliest Insulation - makes sustainable, low-carbon, …
Edinburgh 1 - 10 $979K Seed 2025-01-15