Yllikkälä Power Reserve One
Operating, 30 MW · 30 MWh, in Lappeenranta, owned by Neoen. 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 | 30 MW |
| Capacity | 30 MWh |
| Duration | 1.0 hours |
| Status | Operating, as of 30 December 2025 |
| Owner’s date | October 2020, actual |
| Municipality | Lappeenranta |
| Placed on the map | at Yllikkälä, the place its name carries (GeoNames) |
Who is behind it
| Owner | Neoen |
| Developer | Neoen |
| Built by | Nidec (battery system); Destia (civil and electrical works) |
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
Commissioned October 2020 (Neoen, 14 Dec 2022). Neoen still lists it as an asset on 30 Dec 2025. Neoen calls it simply "Yllikkälä Power Reserve" from 2022.
Evidence and sources
- name: https://neoen.com/en/news/2020/neoen-builds-in-finland-the-nordics-largest-battery-storage…
- municipality: https://neoen.com/en/news/2022/neoens-battery-delivers-fast-reserve-power-to-tvo-during-co…
- builder: https://www.sttinfo.fi/tiedote/70532420/destia-rakentamassa-pohjoismaiden-suurinta-akkuvar…
- status: https://neoen.com/en/news/2022/neoens-battery-delivers-fast-reserve-power-to-tvo-during-co…
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-B002.