Cactos

Large-scale battery storage (incl. second-life EV batteries), energy-as-a-service.

The row

Sector

Energy, Climate & Environment

Stage

In market — Product is being sold

Location

Helsinki

Founded

2021

Business ID

3249847-2 · Finnish trade register

Funding

€12.5M (6/2026; new investors Tesi, Hyundai Motor Group, Silence VC and FJ Labs, with Union Square Ventures returning) + just over €7M (1/2025, Union Square Ventures and Superhero Capital) + €2.5M (2/2023); separately, over €26M of equity went into its battery-fleet vehicle Cactos Fleet Finland LP (1/2024, led by OP Finland Infrastructure and the Finnish Climate Fund)

Links

Where this sits on the map

Cactos is one of 32 companies in Energy, Climate & Environment. The others:

How this row was decided

Every row on this map is checked by hand against the trade register and the company's own material, and placed in the sector that best describes its business or its technology. Service firms and consultancies are left out, however advanced the technology they work with — the test is where the revenue comes from. Only funding figures the company or its investor has published are shown. The full rules are on the landscape ↗