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Wattium

Off-grid 230 V electricity systems with solar, battery and generator for cottages without a grid connection in Finland

Oulu, FinlandFounded 2018wattium.fiWebsite technologies

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Highlights

  • New on EvolcAdded 2026-10-30

About Wattium

Wattium builds off-grid power systems that supply standard 230 V electricity to summer cottages in Finland without a grid connection. The system combines solar panels, a battery and a generator that starts only when needed, and it can be monitored from a phone.

The company sells to cottage owners who lack a grid connection or find one costly, and it offers site surveys and cost estimates before installation. Services also include custom systems for cottages with above-average consumption or existing equipment.

Wattium Oy is registered in Oulu, Finland, where its address is listed, and it was founded in 2018. The website describes installations in northern and central Finland and a reference site on Lake Inari.

Product: Pre-assembled off-grid electrical system (solar, battery, generator, 230 V output) with phone monitoring for holiday cottages.

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Website technologies

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