Olana Siilinjärvi
Operating, 10 MW · 12 MWh, in Siilinjärvi, owned by Olana Energy Oy. Every fact below is as a published source states it, with the address beside it; a field not shown is one no source gave, and nothing is guessed.
The battery
| Power | 10 MW |
| Capacity | 12 MWh |
| Duration | 1.2 hours |
| Status | Operating, as of 11 October 2026 |
| Owner’s date | 2025 Q2, actual |
| Municipality | Siilinjärvi |
| Grid connection | Savon Voima distribution grid |
| Placed on the map | at the centre of Siilinjärvi, its municipality (GeoNames) |
Who is behind it
| Owner | Olana Energy Oy |
| Developer | Olana Energy |
| Built by | Olana Energy Construction (in-house) |
| Business ID | 3376259-7 |
YTJ, by exact name: Olana Energy Oy. https://avoindata.prh.fi/opendata-ytj-api/v3/companies?businessId=3376259-7
Not published anywhere we have found: ultimate owner, cells. The page says so rather than guessing.
Evidence and sources
From the owners’, developers’ and builders’ own releases, council decisions and permit bulletins, read by Vitreous and checked against the owners’ own words on 12 October 2026; a bracket such as “(Energy-Storage.news only)” in a field means the trade press is still the only source for it. Fingrid publishes no meter, no price and no instruction per battery, so this page carries no money: what one megawatt is paid in Fingrid’s markets is on the markets page, for the whole market and never for a named battery. List id FI-B013.