Callio-Hitura hybrid storage, former Pyhäsalmi mine
Operating, 4 MW · 8 MWh, in Pyhäjärvi, owned by Callio-Hitura Solarpark 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 | 4 MW |
| Capacity | 8 MWh |
| Duration | 2.0 hours |
| Status | Operating, as of 13 May 2026 |
| Owner’s date | 1 May 2026, actual |
| Municipality | Pyhäjärvi |
| Placed on the map | at the centre of Pyhäjärvi, its municipality (GeoNames) |
Who is behind it
| Owner | Callio-Hitura Solarpark Oy |
| Built by | Solarigo Systems Oy (main contractor); WEG (storage supplier); Enersense (civils, installation, grid connection) |
| Business ID | 3291498-2 |
YTJ, by exact name: Callio-Hitura Solarpark Oy. https://avoindata.prh.fi/opendata-ytj-api/v3/companies?businessId=3291498-2
Not published anywhere we have found: ultimate owner, developer, cells. The page says so rather than guessing.
What the sources say
Solar plus storage hybrid; batteries started on 1 May 2026 ("vappuna").
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-B016.