Best Energy Companies in Brussels, Belgium
The 48 best Energy companies in Brussels, Belgium in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Fluvius.
Our analysis of 441 Energy companies
$135.1b in tracked funding; 76% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy companies in Brussels
| # | Company | Disclosed funding | Last round | Employees | Founded | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | AYA Energy Provider of energy management services | — | — | 6 | 2009 | Alexandre Indekeu Founder | WordPressMySQLPHP+25 | — | — |
| 2 | Bolt Provider of electricity from local, renewable energy sources via an online platform | — | — | 22 | 2019 | Pieterjan Verhaeghen Co-Founder & CEO | Node.jsSalesforceVideoJS+28 | — | — |
| 3 | Clean Energy Invest Provider of capital and credit for renewable energy projects development | — | — | — | 2009 | Peter De Smet Founder | — | — | — |
| 4 | dnergy Provider of energy solutions, data on energy production, conservation, research, and consumption | — | — | 11 | 2019 | Khadija Nadi Chief Executive Officer | — | — | — |
| 5 | ElectriFI Provider of financial services for solar energy projects | — | — | 36 36 → 59 (+64%) | 2016 | — | — | — | 2 partnerships |
| 6 | ENISS Provider of a platform for the nuclear industry to exchange information on national and European regulatory… | — | — | 5 | 2005 | — | — | — | — |
| 7 | EUROBAT Manufacturer of automotive and industrial battery | — | — | 1 | 1968 | Stefan Stuebing CEO | WordPressMySQLPHP+26 | — | — |
| 8 | Geo Green Geothermal energy based heating solutions for residential and industrial market | — | — | 1 | 2011 | Jacques Vercruysse Founder | — | — | — |
Top 12 Energy companies in Brussels
#1
Funding Raised · Brussels, Brussels · founded 2018 · 20 employees$16Mraised▾
Provider of small-scale hydropower solutions for affordable and sustainable power. The company offers complete solutions, from product manufacturing to project development and operation. It combines technology with a business model to ensure maximum impact. The company also offers customized services and local partnerships.
- Dec 2024Conventional Debt$9M
- Jan 2024Conventional Debt$7M
#2
Funding Raised · Brussels, Brussels · founded 2009 · 4705 employees$244.4Mraised▾
Manufacturer of multiple electrical equipment
- Feb 2021Conventional Debt$243.9M
- May 2019Grant (prize money)$136K
- May 2017Grant (prize money)$228.3K
- Jan 2017Grant (prize money)$222K
#3
Funding Raised · Brussels, Brussels · founded 2007 · 59 employees$2Mraised▾
Association promoting hydrogen as an enabler of a zero-emission society. It represents the interests of the hydrogen industry and its stakeholders. The association facilitates collaboration among diverse industry players and relevant organizations. It promotes policies and initiatives that strengthen the development of hydrogen technologies. The association serves as a united voice for the European hydrogen industry.
- Jun 2023Grant (prize money)$54.9K
- Feb 2020Grant (prize money)$284.4K
- Sep 2018Grant (prize money)$174.3K
- Jan 2018Grant (prize money)$1.5M
#4
Funding Raised · Brussels, Brussels · founded 2021 · 247 employees$714.4Kraised▾
Developer of nuclear energy projects
- Dec 2023Grant (prize money)$714.4K
#5
Public · Brussels, Brussels · founded 2005 · 1 employees$45.3Mraised▾
Provider of sustainable biomass processing solutions. This company transforms wood-based waste into useful applications and raw materials through sustainable and continuous processing methods. The focus is on maximizing the reduction of the impact of residual and waste streams on society. Processes involve the improvement and growth of materials, leading to a transformation into valuable resources.
- Dec 2009Venture Debt$7.2M
- Dec 2009Conventional Debt$38.1M
#6
Funding Raised · Brussels, Brussels · founded 2002$309.2Kraised▾
Association representing efficient heating system manufacturers. It brings together companies producing various heating solutions, including boilers, solar thermal systems, heat pumps, and radiators. The association focuses on innovation in hybrid and digital heating technologies, promoting high-efficiency and renewable systems. Members collaborate to advance the energy transition and improve heating solutions for diverse applications, from residential to commercial and industrial settings. The association also conducts research and publishes reports on the heating market and related technologies.
- Sep 2023Grant (prize money)$189.8K
- May 2019Grant (prize money)$119.4K
#7
Seed · Brussels, Brussels · founded 2020 · 2 employees$2.3Mraised▾
Manufacturer of battery energy storage systems
- Mar 2022Seed$2.2M
- Nov 2021Seed$57.9K
#8
Funding Raised · Brussels, Brussels · founded 2013$2Mraised▾
Ocean Energy Europe is a trade association for ocean renewables in Europe, promoting the development of the European ocean energy industry. They aim to provide 10% of Europe's current electricity needs by 2050 and create 500,000 jobs. They also organize an annual conference and exhibition for the ocean energy sector.
- Jan 2021Grant (prize money)$659.8K
- Apr 2019Grant (prize money)$221.3K
- Mar 2019Grant (prize money)$5.3K
- Jan 2019Grant (prize money)$608.2K
#9
Public · Brussels, Brussels · founded 2001 · 2750 employees$4Mraised▾
Elia Group is a reliable provider of electricity transmission services, ensuring a robust grid with a 99.999 percent reliability level. They are committed to transparency and sustainability in their operations, driving the European energy transition.
- Jul 2019Grant (prize money)$674.2K
- Jan 2018Grant (prize money)$559.2K
- Sep 2017Grant (prize money)$297.2K
- Nov 2014Grant (prize money)$2.5M
#10
Funding Raised · Brussels · founded 2012$1.1Mraised▾
Provider of energy research and training services for materials industrial
- Sep 2020Grant (prize money)$627K
- Jan 2020Grant (prize money)$165.6K
- Mar 2019Grant (prize money)$110.8K
- Dec 2018Grant (prize money)$87.8K
#11
Funding Raised · Brussels, Brussels · founded 2008$225.1Kraised▾
Association for European electricity transmission and distribution technology providers and members. It supports the energy transition through digitized grids. The association aims to future-proof the grid and enable clean electricity access. It represents companies and factories, advocating for their interests across Europe. The association facilitates forums to address electricity-related questions, including smart grids and energy transition.
- Apr 2022Grant (prize money)$137.3K
- Jan 2016Grant (prize money)$87.8K
#12
Funding Raised · Brussels, Brussels · founded 2000 · 6 employees$816Kraised▾
One-stop solution to scaling the clean cooling and heating economy. ATMOsphere assists in the transition to sustainable technologies.
- Jun 2019Grant (prize money)$83.6K
- Jun 2017Grant (prize money)$448.8K
- Feb 2016Grant (prize money)$283.6K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Grid Energy Storage is moving in Belgium
A read on the academic research around Grid Energy Storage — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 231 Belgium-affiliated papers.
- KU Leuven43
- Vrije Universiteit Brussel23
- UCLouvain22
- Ghent University21
- Flanders Make18
- Battery (electricity)2→19
- Cathode1→9
- Anode1→8
- Supercapacitor2→9
- Electrochemistry1→8
- Renewable energy1→23
- Battery (electricity)4→22
- Electricity1→9
- Supercapacitor1→8
- Flexibility (engineering)1→8
- Battery (electricity)1→7
- Nanotechnology1→6
Where energy storage 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.