Octave.energy wins Deloitte Technology Fast 50 2026
Belgium’s fastest-growing tech company has a new name: Octave.energy. On 22 October, we took the number 1 spot in the Deloitte Technology Fast 50 2026, with revenue growth of 6,133% over the past four years. Besides that, we also won the award for fastest-growing company in the Sustainability category.
What drives that growth? Businesses are looking for control over their energy. Prices swing, the grid is getting crowded, and solar panels, batteries and charging stations need to work together. With our battery storage systems and our own Energy Management System, we make that happen, for SMEs and industrial companies, with the help of our certified installer partners.
We are growing our team, expanding our network of partners and taking our solutions beyond Belgium. The goal stays the same: giving businesses a smarter, cheaper and greener way to use energy.
The other winners
Octave.energy was not the only one celebrated on the night. These companies won in the other Fast 50 categories, with their revenue growth over four years:
- Communications & Networking: Gigacom Benelux (Scherpenheuvel-Zichem), 2,018%
- Digital Commerce: Otamiser (Brussels), 2,263%
- Electronic Devices, Hardware & Semiconductor: AI-Blox (Zaventem), 1,358%
- Enterprise Software: Horus Software (Liège), 532%
- FinTech: Portomundi (Antwerp), 453%
- Life Sciences & Health Care: Simplycure (Watermael-Boitsfort), 1,281%
- Media & Entertainment: BattleKart Entertainment (Mouscron), 502%
- Mobility: LIZY (Ixelles), 1,301%
Spott won the Rising Star award for the most promising company under four years old, and Loop Earplugs received the Most Sustainable Growth award. Congratulations to all of them.
