69 Best Green Building Startups to Watch in 2025

The Definitive Seedtable Ranking of Green Building Startups

We track 71,000+ companies and rank them dynamically using our Seedtable Score – a score that uses quantitative and qualitative data points to signal the momentum behind a company. We then monitor the list manually leveraging our expertise as founders and investors.

There are 71 start-ups with an aggregate funding of $867.2m. The average funding per company in this subset is $12.6m.

Last update to the database: Feb 18, 2025. See changelog.

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SageGlass logo

SageGlass

SageGlass is a Saint-Gobain subsidiary developing smart glass solutions for buildings.

6

Funding Rounds

$38.2m

Money raised

Epic CleanTec logo

Epic CleanTec

Epic Cleantec is a full-service water technology company providing turnkey wastewater treatment and reuse systems for the built environment.

7

Funding Rounds

$13.2m

Money raised

Carbicrete logo

Carbicrete

Carbicrete is a Montreal-based manufacturer of low-cost building materials from industrial carbon dioxide emissions.

1

Funding Rounds

$2.1m

Money raised

Verdigris logo

Verdigris

Verdigris is a California-based company developing smart grid and energy management technology aided by artificial intelligence. It was founded by Mark Chung, Thomas Chung, and Jonathan Chu.

8

Funding Rounds

$28.3m

Money raised

enLighted logo

enLighted

enLighted is a Santa Clara, California-based IoT company founded in 2009 by Jonathan Golding, Tanuj Mohan, and Premal Ashar.

8

Funding Rounds

$80.6m

Money raised

Made of Air logo

Made of Air

Made of Air is a carbon storage company converting captured carbon into biomass and biochar for negative emissions products.

1

Funding Rounds

$5.8m

Money raised

Plant Prefab logo

Plant Prefab

Plant Prefab is a Rialto-based prefabricated home factory dedicated to sustainable construction.

3

Funding Rounds

$43.4m

Money raised

Ecomedes logo

Ecomedes

Ecomedes is a San Francisco-based company founded in 2016 by Paul Shahriari, Michael Shahriari and Kathleen Egan.

3

Funding Rounds

$6.0m

Money raised

GHGSat logo

GHGSat

GHGSat is a Montreal-based company developing sensors to monitor industrial emissions.

3

Funding Rounds

$85.0m

Money raised

nanoleaf logo

nanoleaf

nanoleaf is a smart lighting products founded in 2012 by Christian Yan, Tom Rodinger and Gimmy Chu.

4

Funding Rounds

$3.3m

Money raised

Sefaira logo

Sefaira

Sefaira is a London-based software company developing software for energy efficiency and management in buildings.

2

Funding Rounds

$18.0m

Money raised

Kebony logo

Kebony

Kebony is an environmentally friendly wood modification process developer founded in 1997 by Sabine Domayer.

6

Funding Rounds

$63.2m

Money raised

Project Frog (company) logo

Project Frog (company)

Project Frog is a San Francisco-based developer of component buildings that assemble onsite for architects and builders to create energy efficient buildings.

3

Funding Rounds

$50.0m

Money raised

DualSun logo

DualSun

Platform providing homes and buildings with both electricity and hot water through solar technology.

3

Funding Rounds

$14.9m

Money raised

Apis-Cor logo

Apis-Cor

Apis Cor is the first company to develop a specialized equipment for 3D printing in the construction industry. Their technology is capable of printing wall structures entirely on-site without extra assembly required. Apis Cor develops a number of technologies for concrete 3D printing.

2

Funding Rounds

$200.0k

Money raised

Sparkfund logo

Sparkfund

Sparkfund is a Washington, D.C.-based company offering a technology subscription for building managers and their heating, cooling, lighting and resiliency needs.

5

Funding Rounds

$21.6m

Money raised

Wattvision logo

Wattvision

Wattvision is a company developing and manufacturing energy consumption sensors that allow clients track their energy usage on their home, business, rental property or other site.

1

Funding Rounds

Qarnot computing logo

Qarnot computing

Qarnot computing is an affordable, eco-friendly cloud computing founded in 2010 by Paul Benoit.

4

Funding Rounds

$11.6m

Money raised

FenestraPro logo

FenestraPro

FenestraPro is a Dublin-based company founded in 2012 by David Palmer, Simon Whelan and David Palmer.

1

Funding Rounds

$1.4m

Money raised

ZAN Compute logo

ZAN Compute

ZAN Compute is a Santa Clara, California-based company founded in 2014 by Junaith Ahemed Shahabdeen.

3

Funding Rounds

$3.2m

Money raised

Neurio Technology Inc. logo

Neurio Technology Inc.

Neurio Technology is a Vancouver-based developer of smart home energy monitoring systems.

4

Funding Rounds

$2.3m

Money raised

greenTEG logo

greenTEG

greenTEG is a Rümlang-based developer of temperature monitoring technology for greater energy efficiency for commercial buildings.

3

Funding Rounds

$11.1m

Money raised

Electrify America logo

Electrify America

Electrify America is creating a network of electric vehicle DC fast charging stations.

1

Funding Rounds

vilisto logo

vilisto

vilisto is an AI-driven solution to energy consumption founded in 2016 by Christian Brase, Christoph Berger and Lasse Stehnken.

3

Funding Rounds

$5.5m

Money raised

ecoLocked logo

ecoLocked

ecoLocked is a green concrete manufacturer founded in 2021.

2

Funding Rounds

$6.2m

Money raised

Smart Locus logo

Smart Locus

Smart Locus is a company founded in 2010 by Victor Taylor.

1

Funding Rounds

enVerid logo

enVerid

enVerid is a Westwood, Massachusetts-based manufacturer of HVAC control systems increasing energy efficiency for commercial buildings.

4

Funding Rounds

$44.7m

Money raised

buildpulse logo

buildpulse

buildpulse is a company founded in 2013 by Jason Burt.

1

Funding Rounds

$1.8m

Money raised

Seeder Energy logo

Seeder Energy

Seeder Energy is a company founded in 2013 by Alex Shoer, Alexandre van 't Westende, Johnny Browaeys and Rebecca Coombs.

4

Funding Rounds

$438.0k

Money raised

Spiio logo

Spiio

Spiio is a California-based company founded in 2015 by Martin Dal.

4

Funding Rounds

$300.0k

Money raised

BrainBox AI logo

BrainBox AI

BrainBox AI is a Montreal-based artificial intelligence supported HVAC management company.

1

Funding Rounds

$12.0m

Money raised

Acre Designs logo

Acre Designs

A company building zero energy homes

2

Funding Rounds

$1.7m

Money raised

Bandora Systems logo

Bandora Systems

24/7 virtual facility manager to fine tune your smart building, avoiding unexpected downtime and maintenance

1

Funding Rounds

$374.5k

Money raised

Krafthem logo

Krafthem

Krafthem is a Stockholm, Sweden-based developer of energy management and energy trading systems.

1

Funding Rounds

$550.0k

Money raised

Accsys Technologies PLC logo

Accsys Technologies PLC

Accsys Technologies is a London-based manufacturer of modified wood products for the construction industry increasing the durability and stability over traditional material.

1

Funding Rounds

$14.9m

Money raised

BuiltSpace Technologies  logo

BuiltSpace Technologies

BuiltSpace Technologies is a company founded in 2011 by Rick Rolston.

1

Funding Rounds

ALINA (company) logo

ALINA (company)

ALINA is an eco-technology for Sustainable Preservation founded in 2005 by Dāvids Štēbelis, Solvita Kostjukova and Ģirts Ozols.

2

Funding Rounds

$567.5k

Money raised

Touchlight logo

Touchlight

Distributed generation solutions enabling commercial property owners to self-generate electricity on-site.

1

Funding Rounds

$130.0m

Money raised

Modumate logo

Modumate

Modumate is a San Francisco-based company founded in 2017 by Richman Neumann.

3

Funding Rounds

$5.5m

Money raised

Therma-HEXX logo

Therma-HEXX

Therma-HEXX is a Portsmouth, New Hampshire-based company founded in 2011 by Robert Barmore.

2

Funding Rounds

$1.0m

Money raised

ECOR logo

ECOR

ECOR is a San Diego-based company recycling material to develop green and sustainable building materials.

1

Funding Rounds

$40.0m

Money raised

B-Line Analytics logo

B-Line Analytics

B-Line Analytics is a company founded in 2016 by Aaron Short.

1

Funding Rounds

$1.0m

Money raised

Raven Window logo

Raven Window

Raven Window is a Denver-based developer of thermochromatic window coatings to reduce strain on mechanical climatic systems in commercial and residential systems and improve energy efficiency.

2

Funding Rounds

$7.6m

Money raised

mPower Technology logo

mPower Technology

mPower Technology is an Albuquerque, New Mexico-based company founded in 2015 by Murat Okandan.

2

Funding Rounds

$5.0m

Money raised

Smart Office Energy Solutions logo

Smart Office Energy Solutions

Smart Office Energy Solutions is an Houston-based company founded in 2010 by Bryan Hassin.

3

Funding Rounds

$1.6m

Money raised

Unit Solutions logo

Unit Solutions

Unit Solutions is a Las Vegas-based company founded in 2014 by John Haritos.

1

Funding Rounds

Banyan Water logo

Banyan Water

Banyan Water is an Austin, Texas-based company founded in 2011 by Gillan Taddune.

4

Funding Rounds

$4.5m

Money raised

LiveRoof logo

LiveRoof

LiveRoof is a Nunica, Michigan-based green roof company installing living roofs on residential and commercial buildings.

1

Funding Rounds

$50.0k

Money raised

Cloudforest logo

Cloudforest

Company

1

Funding Rounds

$20.0k

Money raised

Kite & Lightning logo

Kite & Lightning

Kite & Lightning is a Seattle-based company founded in 2013 by Ryan Hickner, Jason Hickner and William Hickner.

1

Funding Rounds

$2.5m

Money raised

BuildSim logo

BuildSim

BuildSim is a Pittsburgh-based company founded in 2017 by Haopeng Wang, Weili Xu and Zheng Zhang.

1

Funding Rounds

$120.0k

Money raised

Rise (energy efficiency company) logo

Rise (energy efficiency company)

Rise is a Fredericton-based company founded in 2015 by Matt Daigle.

1

Funding Rounds

$379.0k

Money raised

CalStar Products logo

CalStar Products

CalStar Products is a company founded in 2006 by Craig Ratchford.

5

Funding Rounds

$57.3m

Money raised

Phoebus Energy logo

Phoebus Energy

Phoebus Energy is a Petah Tikva-based provider of energy-saving water heating and cooling solutions for medium to large commercial facilities.

2

Funding Rounds

$2.1m

Money raised

Columbia Green Technologies logo

Columbia Green Technologies

Columbia Green Technologies is a Portland, Oregon-based company founded in 2010 by Vanessa Keitges.

2

Funding Rounds

$1.2m

Money raised

SenZopt Technologies logo

SenZopt Technologies

SenZopt Technologies is a Bangalore-based company founded in 2015 by Satya Gupta.

1

Funding Rounds

Tapu Sustainable Solutions logo

Tapu Sustainable Solutions

Tapu Sustainable Solutions is a company founded in 2010 by Emre Ersahin.

5

Funding Rounds

$4.4m

Money raised

YWire Technologies logo

YWire Technologies

YWire Technologies is a Montreal-based company founded in 2009 by Omar Tabba.

4

Funding Rounds

$2.3m

Money raised

Kaiterra logo

Kaiterra

Kaiterra is a Crans-Montana-based company founded in 2014 by Wenxiang Ying, Jessica Lam and Liam Bates.

2

Funding Rounds

Smarthab logo

Smarthab

Smarthab is a Birmingham-based company founded in 2017 by Arthur Moore.

1

Funding Rounds

$1.5m

Money raised

SunPump Solar logo

SunPump Solar

SunPump Solar is a Vancouver-based company founded by Norman Keevil.

1

Funding Rounds

$150.0k

Money raised

Strauss Energy logo

Strauss Energy

Strauss Energy is a Madaraka Estate-based company founded in 1963 by Tony Nyagah.

1

Funding Rounds

Breather Ventilation logo

Breather Ventilation

Breather Ventilation is an Iceland-based company founded in 2010 by Johannes Loftsson.

2

Funding Rounds

$183.3k

Money raised

Personal Comfort Systems logo

Personal Comfort Systems

Personal Comfort Systems is a San Francisco-based company founded in 2014 by Peter Rumsey.

1

Funding Rounds

Madeplast logo

Madeplast

Madeplast is a Melbourne-based company founded in 2018 by Rafael Gracioso Martins.

1

Funding Rounds

$200.0k

Money raised

Sage Smart Garden logo

Sage Smart Garden

Sage Smart Garden is a Philadelphia-based company founded in 2018 by Trevor Stephens.

1

Funding Rounds

Green Office Tool logo

Green Office Tool

Green Office Tool is a Vancouver-based company founded in 2011 by Jennifer Davis.

1

Funding Rounds

$80.0k

Money raised

Energy Recovery Technologies logo

Energy Recovery Technologies

Energy Recovery Technologies is a Evanston, Illinois-based company founded by Ron Fleckman.

2

Funding Rounds

$6.2m

Money raised

FLUXUS (company) logo

FLUXUS (company)

FLUXUS is a New York City-based company founded in 2013 by Fanyu Lin.

2

Funding Rounds