Toppila (Oulun Energia)
Being built, 20 MW, in Oulu, owned by Oulun Energia. 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 | 20 MW |
| Status | Being built, as of 14 April 2025 |
| Owner’s date | 2026, expected |
| Municipality | Oulu |
| Placed on the map | at Toppila, the place its name carries (GeoNames) |
Who is behind it
| Owner | Oulun Energia |
| Developer | Oulun Energia |
| Built by | Alfen (battery system) |
| Business ID | 0989376-5 |
YTJ, by exact name: Oulun Energia Oy. https://avoindata.prh.fi/opendata-ytj-api/v3/companies?businessId=0989376-5
Not published anywhere we have found: ultimate owner, cells. The page says so rather than guessing.
What the sources say
At the Toppila power plant site, a district of Oulu. About €11 million. MWh not stated.
Evidence and sources
- name: https://www.oulunenergia.fi/en/news/03--2025/Oulun-Energia-invests-in-a-battery-energy-sto…
- municipality: https://www.oulunenergia.fi/en/news/03--2025/Oulun-Energia-invests-in-a-battery-energy-sto…
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-B037.