Lempäälä BESS (Taaleri Energia fund)
Operating, 30 MW · 36 MWh, in Lempäälä, owned by a fund managed by Taaleri Energia. 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 | 36 MWh |
| Duration | 1.2 hours |
| Status | Operating, as of 26 November 2024 |
| Owner’s date | 23 November 2024, actual |
| Municipality | Lempäälä |
| Placed on the map | at the centre of Lempäälä, its municipality (GeoNames) |
Who is behind it
| Owner | A fund managed by Taaleri Energia |
| Ultimate owner | Taaleri Oyj (Taaleri Energia is part of the listed Taaleri group) |
| Developer | Merus Power |
| Built by | Merus Power (EPC; power electronics, control and protection) |
A fund, so no business ID. Taaleri (8 Feb 2023) said Taaleri SolarWind III Fund would acquire it. YTJ lists Lempäälän Tasapainotus Oy (3315834-9, address Ylöjärvi) by name only; no source ties it to this battery.
Not published anywhere we have found: cells. The page says so rather than guessing.
What the sources say
Merus says it entered market use on the Saturday before its release of 26 Nov 2024, so 23 Nov 2024. Size 30 MW / 36 MWh from Taaleri's and Merus's own releases of 8 Feb 2023 (corrected 12 Oct 2026: earlier taken from Energy-Storage.news).
Evidence and sources
- name: https://news.cision.com/fi/merus-power-oyj/r/suurin-merus-powerin-valmistama-sahkovarasto-…
- developer: https://taaleri.com/press-release/taaleri-energia-announces-its-first-battery-energy-stora…
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-B004.