Best Renewable Energy Tech Companies in Belgium
The 31 best Renewable Energy Tech companies in Belgium in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Virya Energy.
Ranked: Best Renewable Energy Tech companies in Belgium
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Virya Energy Online platform offering hydrogen-based energy solutions | $100M | 8 mo ago | Late Stage | — | 2019 | WordPressMySQLRedis+20 | — | — |
| 2 | Xylowatt Technology solution to convert waste into energy | $14M | 137 mo ago | Series A | Olivier Lefebvre ex-CEO | 2001 | — | 16 patents Solid carbon fuel gasification systems and active transfer mechanisms for efficient syngas production | — |
| 3 | Sitemark Provider of a platform for managing solar projects across lifecycles | $9M | 69 mo ago | Series A | Stanislas Vaeren Co-Founder | 2016 | WebflowApple iCloud MailMicrosoft 365+19 | — | — |
| 4 | H2WIN Online platform offering hydrogen-based bioenergy solutions | $3M | 48 mo ago | Series A | Philippe Lorge CEO & Scientific Director | 2013 | — | 29 patents Enzymatic hydrogenase biocatalysts and photocatalytic devices for hydrogen gas production | — |
| 5 | Laminaria Attenuator type wave energy converter | $2M | 110 mo ago | Deadpooled | — | 2011 | — | 2 patents Marine vessel propulsion coupling mechanisms for screw propeller systems | — |
| 6 | 24SEA Offshore monitoring and engineering service provider | $543K | 37 mo ago | Funding Raised | Freek Couttenier Co-Founder | 2011 | — | — | — |
| 7 | Zensor IoT-based monitoring for industrial assets | $280K | 44 mo ago | Seed | Yves Van Ingelgem Founder | 2013 | Cart FunctionalityStrikinglyNginx+23 | 6 patents Smart sensor-based structural health monitoring and strain detection for fastened mechanical joints | — |
| 8 | cast4all technologies Provider of energy monitoring platform for solar and related energy systems | $163K | 61 mo ago | Funding Raised | Herwig Mannaert Co-Founder | 2001 | — | 3 patents Network operation center data transmission and management systems | — |
| 9 | Act&Sorb Provider of wood recycling products and services | $118K | 101 mo ago | Funding Raised | Kenny Vanreppelen VP Operations Act&Sorb for Sibelco group (founder and former CEO) | 2015 | — | 13 patents Manufacturing mesoporous activated carbon and carbonized composites from carbonized MDF | — |
| 10 | EnFoil Provider of flexible PV interconnection technology | — | 41 mo ago | Seed | Dominique Coster CEO | 2022 | — | — | — |
| 11 | 3E Software solutions provider in the renewable energy sector | — | 43 mo ago | Funding Raised | Usha Poornima Founder | 1999 | Webflowcore-jsjQuery+15 | — | — |
Top 12 Renewable Energy Tech companies in Belgium
#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
Series A · Leuven, Flemish Region · founded 2016 · 28 employees$8.8Mraised▾
Provider of a platform for managing solar projects across lifecycles. The platform offers tools for site assessment, progress tracking, quality control, and asset management. It facilitates thermography, work management, and commissioning. The platform integrates drones, robotics, artificial intelligence, analytics, forms, and ticketing. It supports stakeholders, including asset owners, EPC contractors, and O&M teams.
- Jan 2021Grant (prize money)$60.7K
- May 2020Grant (prize money)$904.1K
- Sep 2019Series A$5.5M
- Sep 2018Grant (prize money)$2.1M
#3
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
#4
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—
#5
Funding Raised · Brussels, Brussels · founded 2011$542.7Kraised▾
Offshore monitoring and engineering service provider. Offers testing, inspection services and develops short & long-term energy and health monitoring systems for offshore turbine structures. With core expertise in data analysis, offers solutions for structural dynamics, signal processing, system identification, and health monitoring using data mining techniques. Also, involved in the commissioning and decommissioning of the offshore turbine structures.
- Oct 2023Grant (prize money)$542.7K
#6
Deadpooled · Ostend, Flanders · founded 2011 · 1 employees$2.4Mraised▾
Attenuator type wave energy converter. As a result of the horizontal movement in the water, the Laminaria will be subjected to tilting and translating motion which is transferred through the mooring ropes to the generators. The uniqueness of the product is nominal power production even during the heaviest of storms without undergoing excessive forces.
- Sep 2017Seed$2.4M
#7
Seed · Brussels, Brussels · founded 2013 · 12 employees$280.1Kraised▾
Zensor offers an innovative technology to accurately detect anomalies and keep an eye on the functioning of assets. They serve enterprises in verticals like renewables, civil infrastructure, oil gas, and pipelines.
- Mar 2023Grant (prize money)$280.1K
- Mar 2017Angel—
#8
Funding Raised · Niel, Flanders · founded 2001$163.3Kraised▾
Provider of energy monitoring platform for solar and related energy systems. The platform collects and analyzes data from various energy devices. It offers independent data retrieval, ensuring continuous monitoring regardless of internet connectivity. The platform supports multiple inverter brands and facilitates reporting according to energy performance regulations. It also provides tools for optimizing energy consumption and analyzing PV generation data.
- Oct 2021Grant (prize money)$163.3K
#9
Funding Raised · Houthalen Helchteren, Flanders · founded 2015 · 16 employees$117.5Kraised▾
Act&Sorb is a Belgian startup focused on developing technology solutions for recycling of hard or non-recyclable organic waste streams. The company produces renewable materials from the recycling process and these products find application in multiple industries and energy production.
- May 2018Grant (prize money)$58K
- Dec 2017Grant (prize money)$59.5K
#10
Seed · Genk, Flanders · founded 2022—raised▾
Provider of flexible PV interconnection technology. It produces PV foil which can formed into any shape and can be integrated into the product by means of glueing, injection, or molding.
- 2023Seed—
#11
Funding Raised · Brussels, Brussels · founded 1999—raised▾
Software solutions provider in the renewable energy sector. It provides software and consultancy services to the renewable energy sector. Developed a proprietary monitoring software called SynaptiQ, that monitors, reports and claims to improve the performance of solar and wind projects.
#12
Series A · Ghent, Flanders · founded 2011 · 11 employees—raised▾
Mind4Energy (a spin-off from Ghent University) develops software for monitoring, analysing and optimising the performance of PV solar parks. The company products include 'Data Loggers', 'Mobile Pyranometer' and 'Mobile PV Park Analyzer'.
- Sep 2015Series A—
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Renewable Energy Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Green Hydrogen is moving in Belgium
A read on the academic research around Green Hydrogen — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 289 Belgium-affiliated papers.
- Hydrogenics49
- KU Leuven44
- Ghent University36
- University of Antwerp26
- Fuel Cells and Hydrogen25
- Catalysis2→29
- Hydrogen production6→28
- Chemical engineering1→8
- Photocatalysis3→6
- Renewable energy1→4
- Hydrogen production15→40
- Catalysis9→21
- Production (economics)1→11
- Electrolysis1→10
- Renewable energy2→11
- Renewable energy1→10
- Electrolysis1→4
Where green hydrogen 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.