Kannisto wind farm BESS (OX2)
Being built, 125 MW · 250 MWh, in Halsua, 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 | 125 MW |
| Capacity | 250 MWh |
| Duration | 2.0 hours |
| Status | Being built, as of 12 October 2026 |
| Owner’s date | 2028, expected |
| Municipality | Halsua |
| Placed on the map | at Kannisto, the place its name carries (GeoNames) |
Who is behind it
| Owner | OX2 |
| Developer | OX2 |
OX2. YTJ lists OX2 Finland Oy (3428523-5) and others but no company named for Kannisto storage.
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 110 MW / 220 MWh from ESS News. OX2's own project page: "a 125-megawatt energy storage will be built as part of the project", 125 MW (250 MWh). Co-located with the Kannisto wind farm. Statkraft optimises (OX2, 25 Feb 2026).
Evidence and sources
- name: https://www.ox2.com/projects/kannisto/ https://www.ox2.com/newsroom/press-releases-news/20…
- municipality: https://www.ox2.com/projects/kannisto/
- owner: https://www.ox2.com/newsroom/press-releases-news/2026/ox2-to-invest-in-energy-storage-in-f…
- 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-B026.