Best Sustainability Tech Companies in Wallonia, Belgium
The 41 best Sustainability Tech companies in Wallonia, Belgium in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Virya Energy.
Our analysis of 293 Sustainability Tech companies
$38.4b in tracked funding; 83% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Sustainability Tech companies in Wallonia
| # | Company | Last round | Disclosed funding | Employees | Founded | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 4Inch Intelligent Change Provider of smart heating solutions for residential and commercial buildings | — | — | 4 | 2007 | Jerome Vermaelen Co-Founder & CTO | TypeScriptApexCharts.jsUbuntu+10 | — | — |
| 2 | BambooTouch Developer of green building communities | — | — | 8 | 2005 | Philippe Meeus CEO | — | — | — |
| 3 | COFCUBE Designs and develops modular buildings | — | — | — | 2014 | Julien Henry Managing Director | — | — | — |
| 4 | Dapesco Online software solution for energy management | — | — | 18 | 2002 | Tanguy Detroz Founder | — | — | — |
| 5 | Diagenode Diagnostics Provider of nucleic acid-based in vitro diagnostic tests | — | — | 99 | 2003 | Didier Allaer CEO | — | — | — |
| 6 | ECCO NOVA Provider of a crowdfunding platform for energy projects | — | — | — | 2015 | Pierre Yves Pirlot Co-Founder & Managing Partner | PHPChart.jsLaravel+24 | — | — |
| 7 | Gramitherm Manufacturer of glass fibers thermal insulation boards | — | — | 11 | 2019 | — | WordPressMySQLPHP+21 | — | — |
| 8 | Immo Lighting Provider of installation services LED lighting solutions | — | — | — | 2006 | Christophe Dewerre CEO | — | — | — |
Top 12 Sustainability Tech companies in Wallonia
#1
Late Stage · Braine l Alleud, Wallonia · founded 2019 · 22 employees$100.3Mraised▾
Online platform offering hydrogen-based energy solutions. It is active in the development, financing, construction, and operation of sustainable energy sources. It provides sustainable green energy production, and services for sustainable, green energy hydrogen production and distribution.
- Feb 2026PE$100.3M
#2
Public · Gembloux, Wallonia · founded 1995 · 104 employees$40Mraised▾
Developer of cancer diagnostic tests. The Nu-Q is used for early cancer diagnostics by detecting nucleosome markers of cancer and early-stage cells in the blood. It has also developed vet cancer screening tests.
- Mar 2026Post IPO$2.3M
- May 2025Post IPO$22.6M
- Mar 2024Post IPO$100K
- Dec 2023Post IPO$5.4M
#3
Seed · Ottignies Louvain la Neuve, Wallonia · founded 2024$2.4Mraised▾
Developer of low-cost, high-impact point-source carbon capture technology. This technology addresses industrial flue gases with low CO₂ concentrations, a currently unserved market representing a significant portion of global emissions. The solution features low energy consumption, a modular design, and autonomous operation, eliminating the need for hazardous materials. It aims to prevent CO₂ release at the source, contributing to a sustainable future.
- Mar 2025Seed$2.4M
#4
Series C · Louvain la Neuve, Wallonia · founded 2014 · 15 employees$32.1Mraised▾
Developer of power management integrated circuits for energy harvesting applications. The company offers ambient energy managers designed for various energy sources. These integrated circuits manage power from energy harvesters to storage elements. The company's products support applications in smart homes, consumer electronics, and industrial IoT. The company also provides microcontrollers for data acquisition and processing.
- Mar 2024Series C$19M
- Jul 2020Series B$9M
- Jan 2019Grant (prize money)$626.4K
- Oct 2017Series A$4.1M
#5
Series C · Loncin, Wallonia · founded 2010 · 29 employees$15.2Mraised▾
Provider of software and sensor solutions for electrical grid monitoring. It offers dynamic line rating solutions to maximize grid capacity. It also provides partial discharge monitoring solutions for aging infrastructure, including continuous and spot testing options.
- Oct 2023Series C$10.5M
- Aug 2020Series A$4.7M
- Jun 2017Grant (prize money)$57K
- Jan 2017Grant (prize money)$57.1K
#6
Series B · Liege, Wallonia · founded 2010 · 48 employees$57.3Mraised▾
Developer of a portfolio of pharmaceuticals against multiple diseases. It offers its flagship products for Type 1 diabetes, immune-mediated diseases, oncology among others. It has identified HLA class II/ or Natural killer T -cell epitope to generate antibodies against the immune response promoting diseases. It is also involved in the antigen-based vaccine which contains a specific thioredoxin motif (a few amino acids) and aluminum salts as an adjuvant. The company is running programs in the following disease areas Type 1 Diabetes, Myasthenia Gravis, Viral diseases, and multiple sclerosis. It has completed its phase 1b clinical trial for its drug candidate for type 1 diabetes.
- Feb 2021Series B$25.8M
- Jun 2019Grant (prize money)$5.2M
- Jun 2019Conventional Debt$2.2M
- Jun 2019Series B$31.4M
#7
Series A · Charleroi, Wallonia · founded 2021 · 3 employees$8.6Mraised▾
Developer of antibiotics to target resistant pathogens. The company is focused on developing first-in-class antimicrobials with new modes of action to combat antibiotic-resistant bacteria.
- Jun 2023Series A$8.6M
#8
Seed · Ottignies-Louvain-la-Neuve, Wallonia · founded 2017 · 4 employees$2.2Mraised▾
Biotechnology company focused on fungal bioremediation and bioconversion. It uses living fungi and digital‑twin/AI‑enabled platforms to deliver cost‑effective, low‑carbon bioremediation, waste‑treatment, and high‑value biomolecule production for industrial and environmental clients. It develops and deploys precision bioremediation services for soils, sediments, and industrial sludges, using engineered fungi and microorganisms guided by AI‑powered digital twins to optimize decontamination while reducing treatment cost and CO₂ emissions versus traditional methods.
#9
Deadpooled · Liege, Wallonia · founded 2002 · 13 employees$31.1Mraised▾
Uteron Pharma was developing products dedicated to female healthcare. Uteron has a diversified portfolio of products in different stages of development including Levosert (hormonal intra-uterine device), a next generation oral contraceptives containing natural estrogen; biochemical tests that will significantly increase in-vitro fertilization success rates, and pharmacologic treatments for cervical dysplasia. As of January 23, 2013, Uteron Pharma operates as a subsidiary of Watson Pharmaceuticals.
- Mar 2012Series B$18.7M
- Sep 2011Series A$2M
- May 2011Series A$10.4M
#10
Acquired · Liege, Wallonia · founded 2014 · 25 employees$34.5Mraised▾
Provider of mesh-enabled smart street lighting solutions. It offers SmartNodes - an intelligent module embedded with specific sensors, processors, and memory. All nodes are interconnected and are capable of communicating with each other thereby forming a mesh network. In addition, the company offers a power unit that enhances the communication between the node & the driver, an access point WiFi to connect third-party devices, a lighting control unit, and a smart noise system.
- Sep 2015Series A$34.5M
#11
Series A · Louvain la Neuve, Wallonia · founded 2001 · 13 employees$14.2Mraised▾
Technology solution to convert waste into energy. It uses NOTAR reactor technology that produces a clean tar free syngas from natural and recycled wood biomass gasification. It transforms waste into energy and clean gas by recycling hazardous waste using its gasification systems and technology.
- May 2015Series A$6M
- Jun 2014Grant (prize money)$3.7M
- Feb 2014Series A$8.2M
- Dec 2009Series A—
#12
Series A · Nivelles, Wallonia · founded 2013 · 1 employees$3.3Mraised▾
Online platform offering hydrogen-based bioenergy solutions. It produces hydrogen from the direct conversion of sunlight and water with photo enzymatic catalysts. Its business model is based on enzyme sales to hydrogen solution providers and electrolysis OEMs.
- Oct 2022Series A$3.3M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Sustainability Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Climate Adaptation is moving in Belgium
A read on the academic research around Climate Adaptation — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 112 Belgium-affiliated papers.
- University of Antwerp19
- KU Leuven14
- Vrije Universiteit Brussel10
- Flemish Institute for Technological Research7
- European Commission6
- Climate change3
- Green infrastructure2
- Bond2
- Project finance2
- Investment (military)2
- Flood myth3→14
- Resilience (materials science)1→4
- Climate change2→30
- Psychological resilience1→10
- Resilience (materials science)1→7
- Flood myth1→5
Where climate adaptation is researched across Belgium
Location clusters by institution affiliation — each city's volume, stance tone, and a quick read on its hot topic, what's advancing, the opening opportunity, and the main concern.
Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.