Riihimäki, Kaunola (Ardian)
Operating, 30 MW · 30 MWh, in Riihimäki, owned by Skip Wind 5 Oy. 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 31 March 2026 |
| Owner’s date | March 2026, actual |
| Municipality | Riihimäki |
| Placed on the map | at the centre of Riihimäki, its municipality (GeoNames) |
Who is behind it
| Owner | Skip Wind 5 Oy |
| Ultimate owner | Ardian Clean Energy Evergreen Fund |
| Built by | Merus Power (full delivery) |
| Business ID | 3307979-8 |
YTJ: the company Merus names, Skip Wind 5 Oy, is now named Enordic Evergreen Oy. YTJ also lists Kaunolan sähkövarasto Oy (3383769-1) by name only. https://avoindata.prh.fi/opendata-ytj-api/v3/companies?businessId=3307979-8
Not published anywhere we have found: developer, cells. The page says so rather than guessing.
What the sources say
Ordered 13 Feb 2025 through eNordic; Ardian's second Finnish storage. No source read confirms construction or operation. CORRECTED 18 Oct 2026: was "planned, expected spring 2026". Enordic Evergreen, the asset manager for Ardian's fund (31 Mar 2026): the Kaunola battery (30 MW / 30 MWh) "located in close vicinity to Riihimäki" "has successfully entered commercial operation"; grid forming, built to the SJV2024 grid code. The release gives no day, so the month of publication is used.
Evidence and sources
- name: news.cision.com/fi/merus-power-oyj/r/sisapiiritieto--merus-powe…
- municipality: news.cision.com/fi/merus-power-oyj/r/sisapiiritieto--merus-powe…
- capacity: enordic.fi/kaunola-battery-energy-storage-system-is-now-op…
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-B052.