Yllikkälä Power Reserve Two
Operating, 56 MW · 113 MWh, in Lappeenranta, owned by Neoen (100%). 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 | 56 MW |
| Capacity | 113 MWh |
| Duration | 2.0 hours |
| Status | Operating, as of 4 March 2026 |
| Owner’s date | 2025 H1, actual |
| Municipality | Lappeenranta |
| Grid connection | Fingrid Yllikkälä substation, underground cable |
| Placed on the map | at Yllikkälä, the place its name carries (GeoNames) |
Who is behind it
| Owner | Neoen (100%) |
| Developer | Neoen |
| Built by | Nidec (overall responsibility; containers, cells, inverters); Destia (earthworks, foundations, 110 kV cabling) |
Neoen SA, France. YTJ lists Neoen Storage Finland 1 Oy (3100878-5), 2 Oy (3364065-3), 3 Oy (3529064-2) and IV Oy (3553178-4), but no source read says which holds this battery.
Not published anywhere we have found: ultimate owner, cells. The page says so rather than guessing.
What the sources say
Nidec supplied the cells; the cell manufacturer is not named. Destia (4 Mar 2026) says it was put into operation in the first half of 2025.
Evidence and sources
- name: https://neoen.com/en/news/2023/neoen-launches-construction-of-yllikkala-power-reserve-two-…
- builder: https://neoen.com/en/news/2023/neoen-launches-construction-of-yllikkala-power-reserve-two-…
- status: https://destia.fi/en/article/the-largest-battery-storage-in-the-nordics-was-built-with-pre…
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-B011.