Best Energy Efficiency Tech Companies in Belgium
The 89 best Energy Efficiency Tech companies in Belgium in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: SmartNodes.
Ranking the leading Energy Efficiency Tech companies in Belgium by disclosed equity funding, this directory tracks 89 ventures that have collectively pulled in $149M. No unicorns yet. But the capital is moving, and the distribution tells you something real about where Belgium's clean-tech ambitions actually sit.
E-peas leads the field at $32M in disclosed funding, followed by Qpinch at $12M and Zero Friction at $5M. The rest cluster well below that, which means the top two earners account for a disproportionate share of the pool. So what's driving the momentum underneath the headline? App-layer adoption offers one signal: across energy and oil-related platforms, median install growth is running at roughly +28% YoY across 138 tracked apps, a number I find worth watching because it suggests end-user demand is hardening, not softening. Hot themes in the sector right now are solar electricity generation, solar PV, and renewable technologies, and Belgium's funding map reflects that tilt. Backers like EIC Fund, PMV, and Start it @KBC keep showing up across the cap table, which tells you institutional conviction here is real, even if the cheque sizes haven't broken through to the next tier.
Our analysis of 50 Energy Efficiency Tech companies
$7.8b in tracked funding; 86% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best Energy Efficiency Tech companies in Belgium
| # | Company | Disclosed funding | Last round | Employees | Founder | Tech stack | Web popularity | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | SmartNodes Provider of mesh-enabled smart street lighting solutions | $35M | 129 mo ago | 25 | Guy Lejeune Co-Founder | — | — | — | — |
| 2 | e-peas Developer of power management integrated circuits for energy harvesting applications | $32M | 27 mo ago | 15 | Julien Vos Co-Founder | WordPressMySQLPHP+22 | Top 5M | 66 patents Power‑management ICs for energy harvesting, voltage conversion, and image‑zoom control | — |
| 3 | Racktivity Power management & environmental control for data centers | $13M | 160 mo ago | 11 | — | — | — | 15 patents Patents concentrated in electrical & electronics | — |
| 4 | REstore Cloud-based automated demand response program solutions | $12M | 131 mo ago | 50 | — | — | — | 43 patents Smart grid demand‑response and real‑time power metering analytics | — |
| 5 | Qpinch Waste heat recovery solutions | $12M | 57 mo ago | 11 11 → 14 (+27%) | Christian Heeren Co-Founder & CCO | — | — | — | — |
| 6 | TrendMiner Developer of an industrial analytics platform for operational performance improvements | $10M | 118 mo ago | 70 | — | WebflowApple iCloud MailMicrosoft 365+22 | Top 10M | 4 patents Industrial process monitoring via fingerprint analytics and advanced database management systems. | — |
| 7 | MCS Solutions SaaS-driven facility and workplace management software solution | $7M | 126 mo ago | 12 | Koen Matthijs CEO | — | — | — | — |
| 8 | June SaaS-driven meter reading and energy management solutions | $6M | 46 mo ago | 1 | Georges Lieben Co-Founder | HubSpot CMS HubStripeAmazon Web Services+24 | Top 5M | — | — |
| 9 | Zero Friction Provider of SaaS platform for billing and customer interaction for heating | $5M | 21 mo ago | 15 | Wim Jacobs CEO & Co-founder | WebflowApple iCloud MailMicrosoft 365+22 | Top 50M | — | 1 award |
| 10 | Opinum Cloud-based platform to analyse and visualise energy and environmental data | $4M | 106 mo ago | 11 11 → 13 (+18%) | Loïc Bar CEO | Azure Front DoorAzureCloudflare+6 | Top 10M | — | — |
| 11 | QustomDot Manufacturer of quantum dot LED solution | $3M | 36 mo ago | 10 10 → 17 (+70%) | Igor Nakonechnyi Founder and Director | — | — | 23 patents Synthesis and surface engineering of core‑shell quantum dots and nanoparticle ligands | — |
| 12 | Smappee Provider of energy management and charging solutions for homes and businesses | $3M | 41 mo ago | 18 | Stefan Grosjean Founder & Co-CEO | WordPress Block EditorWordPressMySQL+29 | Top 5M | 8 patents Real-time energy monitoring and control for smart home/grid power management | — |
| 13 | Companion.energy Energy management software | $2M | 25 mo ago | 2 | Thomas Vyncke Co-Founder | WebflowGSAPAzure+29 | Top 50M | — | — |
| 14 | Zapfloor SaaS-driven integrated workspace management solution for facility managers | $2M | 44 mo ago | 8 | Wouter Schoofs CTO - founder | Webflow EcommerceCart FunctionalityWebflow+30 | Top 10M | — | — |
| 15 | Ethernetics Provider of solutions to automate data center operations | $2M | 35 mo ago | 9 | Jan Dezutter Co-Founder | — | — | 8 patents Intelligent power distribution units optimizing power delivery to multi-PSU data‑center equipment | 2 partnerships |
| 16 | Enersee AI-driven platform designed for energy managers to optimize energy utilization | $1M | 9 mo ago | 5 | Maarten Van De Vijver Founder & CTO | WebflowApple iCloud MailMicrosoft 365+21 | Top 10M | — | 1 launch |
| 17 | ThermoVault Provider of smart controllers for optimizing energy use in water heaters. | $600K | 72 mo ago | 8 | Sandro Lacovella Founder & CEO | Wix eCommerceWixSentry+9 | Top 50M | — | 1 partnership |
| 18 | Condugo Provider of energy management platform | $350K | 72 mo ago | 1 | Xavier Moor Co-Founder & CEO | — | — | — | — |
| 19 | Cheqroom Equipment monitoring and tracking software provider | $263K | 51 mo ago | 42 42 → 52 (+24%) | Vincent Theeten Co-Founder & CEO | Cart FunctionalityCraft CMSApple iCloud Mail+36 | Top 5M | — | 3 launchs |
| 20 | Energis Provider of data-driven energy management software | $240K | 72 mo ago | 11 | Frederic Wauters Business & Product Director / Co-founder Energis | WordPress Block EditorElementorWordPress+34 | Top 50M | — | 2 partnerships |
| 21 | cast4all technologies Provider of energy monitoring platform for solar and related energy systems | $163K | 56 mo ago | — | Herwig Mannaert Co-Founder | — | — | 3 patents Data transmission systems for network operation center communications and management | — |
| 22 | KNX Smart home and building automation/energy management solutions | $106K | 80 mo ago | 16 | Heinz Lux CEO | Insightly CRMYouTubeAmazon ALB+18 | Top 500k | — | 1 launch · 4 partnerships |
Top 12 Energy Efficiency Tech companies in Belgium
#1
Seed · Brussels, Brussels · founded 2021 · 5 employees$1.3Mraised▾
AI-driven platform designed for energy managers to optimize energy utilization. It helps detect issues, identify improvement areas, and make informed decisions.
- Sep 2025Seed$4.7M
- Jun 2023Seed$1.3M
#2
Seed · Ghent, Flanders · founded 2018 · 15 employees$5.1Mraised▾
Provider of SaaS platform for billing and customer interaction for heating. The platform streamlines invoicing processes and facilitates transparent communication with end consumers through a self-service portal. It offers features such as predicting invoice amounts and providing real-time overviews of billed and unbilled amounts. The platform supports meter-to-cash processes, aiming to simplify invoicing, cash collection, and cost allocation. It integrates into existing IT landscapes, offering automated billing and customer service.
- Sep 2024Seed$2.8M
- Sep 2022Seed$2.3M
#3
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
#4
Seed · Brussels, Brussels · founded 2022 · 2 employees$2.3Mraised▾
Energy management software. The software combines financial and operational data to forecast energy costs and optimize energy usage.
- May 2024Seed$2.3M
- 2023Seed—
#5
Series A · Ghent, Flanders · founded 2020 · 10 employees$3.3Mraised▾
Manufacturer of quantum dot LED solution. It manufactures quantum dots that can be applied to LED, watches, mobile phones, and goggles. They are tiny semiconductors that transform UV light into other pure colors. It can also be used in smartphones, AR/VR goggles, and more.
- 2023Grant (prize money)$6.6M
- Sep 2022Grant (prize money)$705.3K
- Feb 2020Series A$3.3M
#6
Series B · Antwerp, Flanders · founded 2012 · 11 employees$11.8Mraised▾
Waste heat recovery solutions. It offers a chemical process to recycle waste heat to a more helpful level than conventional heat pumps by recycling heat from industrial waste in the steam process to be reused. It uses liquid polyphosphates in a two-stage process to capture heat from hot water or low-grade steam. In the first reactor, the waste heat drives a condensation reaction to make phosphate oligomers, releasing water. In the second reactor, water is added back and has a hydrolysis reaction that releases heat.
- Sep 2021Series B$11.8M
- Oct 2016Grant (prize money)$483.1K
#7
Seed · Antwerp, Flanders · founded 2016 · 1 employees$5.5Mraised▾
SaaS-driven meter reading and energy management solutions. The platform analyzes consumption and accordingly finds ways to reduce energy usage. The platform enables users to change energy suppliers, track consumption, analyze solar production, and more.
- Aug 2022Seed$3.1M
- Jul 2018Angel$2.5M
#8
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
#9
Seed · Brussels, Brussels · founded 2019 · 9 employees$1.6Mraised▾
Ethernetics provides solutions to automate data centre operations. It also provides dashboards based on measurement data. It uses machine learning and artificial intelligence technology to implement predictive maintenance of server power supplies, UPS and backup batteries. It also provides solutions for lower power cost, reduction of the total cost of ownership, and for certifications.
- Jun 2023Seed$1.6M
#10
Series A · Harelbeke, Flanders · founded 2012 · 18 employees$2.7Mraised▾
Provider of energy management and charging solutions for homes and businesses. The company offers systems to control and monitor energy use efficiently. These systems allow users to direct energy to consumers and storage. The company also provides charging stations for electric vehicles. It serves installers and energy service providers with energy efficiency products.
- Jan 2023Grant (prize money)—
- Jan 2016Series A$2.7M
#11
Deadpooled · Lochristi, Flemish Region · founded 2009 · 11 employees$13.1Mraised▾
Power management & environmental control for data centers. The company's product offering includes environmental management, infrastructure power management, power management software (DCIM/DCPM), and rack power management (PDU). The DCPM suite, a service provider infrastructure, and data center performance management system, measures, monitors and manages power across distributed data centers. The product gives customers full visibility and control of their energy consumption while integrating with other applications and PDU appliances.
- Feb 2013Series B$3.3M
- Dec 2010Series B$8M
- Oct 2009Series A$1.8M
#12
Series A · Antwerp, Flanders · founded 2015 · 8 employees$2Mraised▾
SaaS-driven integrated workspace management solution for facility managers. The solutions are provided for workplaces, serviced offices, coworking spaces, and multi-tenant environments. It offers features including desk booking, meeting room management, visitor management, and more. Their apps are available for Android & iOS devices.
- Sep 2022Series A$2M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Energy Efficiency Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Energy Efficiency & Buildings is moving in Belgium
A read on the academic research around Energy Efficiency & Buildings — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 212 Belgium-affiliated papers.
- KU Leuven62
- University of Liège57
- Ghent University31
- Vrije Universiteit Brussel17
- Flanders Make14
- Renewable energy1→4
- Energy management1→4
- Thermal comfort1→7
- Thermodynamics1→6
- Overheating (electricity)2→6
- Energy management6→9
- Heat sink4→6
- Heat pump2→7
Where energy efficiency 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.