€10m · Series A · Battery storage · Mechelen, Belgium
Octave.energy, which combines commercial battery storage with energy-management software, has secured €10m in Series A financing. SPDG Growth led the package, joined by imec.istart, BNP Paribas Fortis and KBC. The capital will support expansion in the Netherlands, France and Germany and further product development, according to the company’s announcement.
The €10m combines equity and flexible debt. The announcement does not disclose the split.
Taking a profitable storage business into new markets
Octave is expanding from an operating base: the company reports €16m in 2025 revenue and three consecutive profitable years. Its battery systems and energy-management software help businesses coordinate power use, storage and charging. That makes this round a test of whether an established offering can travel across European electricity markets.
Octave plans to add local sales and operations teams in the Netherlands, France and Germany while expanding its installation network. Those choices put delivery capacity at the centre of the expansion. Customer returns depend on equipment, installation and daily operation working together under local conditions. The useful next evidence would be whether those new teams and partners can reproduce attractive customer economics while maintaining the company’s reported profitability.
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Sources checked: Octave company announcement · Tech.eu Funding Explorer · EnBW New Ventures on storage integration (via EUVC).
Date note: Tech.eu records the round on 4 September 2026; the company announcement specifies September 2026.
