Korkeamaa wind farm BESS (OX2)
Being built, 110 MW · 220 MWh, in Soini, owned by OX2. 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 | 110 MW |
| Capacity | 220 MWh |
| Duration | 2.0 hours |
| Status | Being built, as of 12 October 2026 |
| Owner’s date | 2028, expected |
| Municipality | Soini |
| Placed on the map | at the centre of Soini, its municipality (GeoNames) |
Who is behind it
| Owner | OX2 |
| Developer | OX2 |
No source names the company that holds it. Possible project company in YTJ, by name only: Korkeamaa BESS Oy (3539495-1).
Not published anywhere we have found: ultimate owner, built by, cells. The page says so rather than guessing.
What the sources say
CORRECTED 12 Oct 2026: size was 125 MW / 250 MWh from ESS News, which had Korkeamaa and Kannisto the wrong way round. OX2's own project pages give Korkeamaa 110 MW (220 MWh). OX2 (25 Feb 2026): both storages in operation in 2028, OX2 keeps them, Statkraft optimises. OX2 Finnish page: battery units to be installed early 2027.
Evidence and sources
- name: https://www.ox2.com/projects/korkeamaa/ https://www.ox2.com/newsroom/press-releases-news/2…
- municipality: https://www.ox2.com/projects/korkeamaa/
- owner: https://www.ox2.com/newsroom/press-releases-news/2026/ox2-to-invest-in-energy-storage-in-f…
- power: https://www.ox2.com/projects/korkeamaa/ https://www.ox2.com/fi/projektit/korkeamaa/
- status: https://www.ox2.com/newsroom/press-releases-news/2026/ox2-to-invest-in-energy-storage-in-f…
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-B022.