Finland · the change ledger
Since 11 October 2026: 14 batteries entered, 500 MW, 38 other changes.
No Finnish body publishes a list of batteries, so the list this site keeps by hand from the owners’ own releases is copied whenever it changes, and the difference between one copy and the one before is printed, battery by battery. Beneath it, Fingrid’s own count: every hour in which its total moved, which is a battery arriving on the grid, unnamed. Nothing here is inferred from the numbers; it is one capture against the one before, identifier by identifier. The column headed "our reading" is a rule, and it can be wrong.
2captures held across 1 list, the oldest from 11 October 2026
14batteries entered a list, 500 MW
0left a list
38other changes that moved something; 3 more were respellings or refilings
By month
| Month | Entered | MW entered | Left | Other changes | Respelt or refiled |
|---|---|---|---|---|---|
| October 2026 | 14 | 500 | 0 | 38 | 3 |
Where this can be wrong
The list is kept by hand, so a battery enters it when a source is found, which can be long after the battery started; the date of a change here is the date the list changed, never the date the battery did. The owner’s stated date is on each battery’s page. A step in Fingrid’s count is dated to the hour, but Fingrid adds a unit to its model up to a month before it starts and names nothing, so no step is matched to a name on this site.
The list of batteries their owners name
A battery enters when a source first names it and leaves only if a source says it was dropped; a change of status is the owner’s own word, read from a later release. The list is kept by hand, so a copy is taken whenever it changes, and the difference printed. 2 captures held, 11 October 2026 to 12 October 2026.
12 October 2026, against 11 October 2026
55 changes, 3 of them the publisher respelling or refiling something.
| Battery | What changed | From | To | MW | Our reading |
|---|---|---|---|---|---|
| Sandås BESS (Fu-Gen) FI-B075 | entered | · | · | 125 | new to this list |
| Mehtäperä battery storage (FRV Nivala Oy) FI-B065 | entered | · | · | 100 | new to this list |
| Pälli battery storage (Fortum) FI-B066 | entered | · | · | 60 | new to this list |
| Pahkakoski BESS FI-B071 | entered | · | · | 50 | new to this list |
| Icecreek Energy II portfolio (five sites, western Finland) FI-B076 | entered | · | · | 34 | new to this list |
| Relletinsuo battery storage and substation FI-B064 | entered | · | · | 30 | new to this list |
| Kyrö BESS (Fu-Gen) FI-B074 | entered | · | · | 30 | new to this list |
| Alvar BESS FI-B070 | entered | · | · | 25 | new to this list |
| Västervik–Riskula BESS FI-B072 | entered | · | · | 25 | new to this list |
| Ypyrinneva BESS FI-B073 | entered | · | · | 12 | new to this list |
| Kouvola (Usva Energia) FI-B077 | entered | · | · | 5 | new to this list |
| Paarmasuontie energy storage, Raahe FI-B069 | entered | · | · | 1.9 | new to this list |
| NW JBox container battery, Raahe (Kivipelto, Romuperäntie) FI-B067 | entered | · | · | 1.2 | new to this list |
| NW JBox container battery, Raahe (Järvelä I, Mutalantie 97) FI-B068 | entered | · | · | 1.2 | new to this list |
| Haapajärvi (Pysäysperä) FI-B020 | stated date | 2027 mid | 2027 H1 | 125 | changed |
| AKKU One FI-B023 | builder | Delta Capacity (EPC management); NYAB (balance of plant); Sungrow (battery system); Rejlers; Ampner; GreenPowerMonitor | Delta Capacity (EPCM); NYAB (balance of plant); Sungrow (battery system); Rejlers (technical support); Ampner (grid studies); GreenPowerMonitor (EMS and SCADA) | 125 | changed |
| Kärppiö / Karppio (Delta Capacity) FI-B024 | builder | Sungrow (battery system); NEPower (balance of plant, substation); Despro (engineering) | Sungrow (BESS technology); NEPower (balance of plant, electrification, substation); Despro (owner's engineering) | 125 | changed |
| Nala Vuolijoki FI-B025 | builder | Despro (EPC management); Destia (balance of plant); Sungrow (battery system) | Despro (EPCM); Destia Oy (balance of plant); Sungrow (BESS technology) | 125 | changed |
| Kannisto wind farm BESS (OX2) FI-B026 | power, MW | 110 | 125 | 125 | up by 15 |
| Kannisto wind farm BESS (OX2) FI-B026 | capacity, MWh | 220 | 250 | 125 | up by 30 |
| Kukonkylä FI-B040 | owner | Enlight Renewable Energy | Enlight Renewable Energy Ltd | 125 | a respelling; the thing is the same |
| Korkeamaa wind farm BESS (OX2) FI-B022 | power, MW | 125 | 110 | 110 | down by 15 |
| Korkeamaa wind farm BESS (OX2) FI-B022 | capacity, MWh | 250 | 220 | 110 | down by 30 |
| Teuva (Prime Capital, from Usva Energia) FI-B043 | owner | Prime Capital | Prime Green Energy Infrastructure Fund II, managed by Prime Capital AG | 100 | changed |
| Pyhäjoki (Enlight, from Usva Energia) FI-B044 | owner | Enlight Renewable Energy | Enlight Renewable Energy Ltd | 100 | a respelling; the thing is the same |
| Alapitkä battery park FI-B045 | owner | re:cap global investors (FP Lux European Battery Storage Fund) | re:cap global investors (FP Lux European Battery Storage fund) | 95 | a respelling; the thing is the same |
| Alapitkä battery park FI-B045 | municipality | · | Lapinlahti | 95 | changed |
| Alapitkä battery park FI-B045 | builder | SMA Altenso (EPC incl. grid and MV/HV); SMA Solar (grid-forming inverters) | SMA Altenso (full EPC: balance of plant, medium to high voltage, grid integration); SMA (Sunny Central Storage UP-S grid-forming inverters) | 95 | changed |
| Alapitkä battery park FI-B045 | stated date | 2027 H2 | 2027 | 95 | changed |
| Pyhäsalmi BESS (SENS and Dovre) FI-B047 | name | Pyhäsalmi (SENS) | Pyhäsalmi BESS (SENS and Dovre) | 85 | changed |
| Pyhäsalmi BESS (SENS and Dovre) FI-B047 | owner | Prime Capital (inferred, see notes) | Prime Capital AG renewable energy fund (Pyhäsalmi BESS Oy) | 85 | changed |
| Simo, phase 2 FI-B048 | status | Announced | Being built | 70 | changed |
| Simo, phase 2 FI-B048 | owner | FRV with AMPTank Energy Oy | FRV with AMP Tank | 70 | changed |
| Simo, phase 2 FI-B048 | stated date | · | 2026 | 70 | changed |
| Uusnivala BESS FI-B029 | owner | L&G NTR Clean Power (Europe) Fund (Uusnivala Energy Storage Oy) | L&G NTR Clean Power (Europe) III Fund (Uusnivala Energy Storage Oy) | 55 | changed |
| Uusnivala BESS FI-B029 | stated date | · | 2026 mid | 55 | changed |
| Kauhava (Nala Renewables) FI-B019 | status | Operating | Energised, commissioning | 50 | changed |
| Kauhava (Nala Renewables) FI-B019 | builder | KSBR (construction); Sungrow (22 PowerTitan 2.0 units of 5 MWh) | KSBR (construction); Sungrow (22 PowerTitan 2.0 units of 5 MWh); Ramboll (partner) | 50 | changed |
| Kauhava (Nala Renewables) FI-B019 | stated date | by 2026-10 | 2026 end | 50 | changed |
| Kalanti BESS FI-B031 | builder | Suvic Oy (balance of plant); Sungrow (20 PowerTitan 2.0 units) | Suvic Oy (balance of plant); Sungrow (20 PowerTitan 2.0 units, Energy-Storage.news only) | 50 | changed |
| Isokangas (Eco Stor) FI-B032 | owner | Å Energi (largest share), Farvatn, AmpTank and Eco Stor | Å Energi (majority), with Farvatn Capital and Eco-Stor AS; AMP Tank keeps a minority | 50 | changed |
| Isokangas (Eco Stor) FI-B032 | builder | Eco Stor (build) | Eco Stor (build; Energy-Storage.news only) | 50 | changed |
| Pedersöre (Ingrid Capacity) FI-B050 | owner | Ingrid Capacity with Mirova investment | Ingrid Capacity with Mirova (partnership) | 45 | changed |
| Nurmijärvi (Helen and Evli) FI-B015 | builder | Not named (36 container modules); Siemens is operation and management partner | Siemens (technology supplier: electrification, energy management software, lifecycle services); 36 container modules, maker not named | 40 | changed |
| Simo, phase 1 FI-B009 | builder | Sungrow (PowerTitan 1.0 LFP containers) | Sungrow (PowerTitan LFP containers) | 30 | changed |
| Ainola BESS (Piiparinmäki wind farm) FI-B010 | owner | Nuveen Infrastructure (90%), Ilmatar (10%) | Nuveen Infrastructure (majority), Ilmatar (10%) | 30 | changed |
| Ainola BESS (Piiparinmäki wind farm) FI-B010 | municipality | · | Pyhäntä | 30 | changed |
| Ainola BESS (Piiparinmäki wind farm) FI-B010 | builder | Alfen (TheBattery Elements) | Ilmatar (constructor); Alfen TheBattery Elements (Energy-Storage.news only) | 30 | changed |
| Valkeakoski (Alpiq) FI-B014 | stated date | 2025-10-30 | 2025-10 | 30 | changed |
| Rautavaara (Winda Energy) FI-B034 | builder | GAZ GmbH (battery system); Ingeteam (inverters) | GAZ Energy (integrated battery); Ingeteam (inverter) | 30 | changed |
| Kellarijanka (UB Renewable Energy Fund) FI-B051 | owner | UB Renewable Energy Fund (majority), part of United Bankers | UB Renewable Energy Fund (significant majority, bought from AmpTank Finland Oy), part of United Bankers | 30 | changed |
| Rando Grid FI-B005 | owner | JTel Oy and Rando Ventures Oy | Rando Grid Oy, owned by JTel Oy and Rando Ventures Oy | 5 | changed |
| Rando Grid FI-B005 | builder | Cactos (units built in Kempele); Kaco inverters | Cactos (supplier and operator; 24 Cactos units made in Kempele); Kaco inverters (ESS News only) | 5 | changed |
| Rando Grid FI-B005 | stated date | 2025-01-24 | 2025-01 | 5 | changed |
| Batcave (Järvenpää power plant) FI-B001 | stated date | 2017-03 | 2017-03-01 | 2 | changed |
Fingrid’s count, hour by hour
Dataset 424, read 16 October 2026; 47 hours in which the count moved since its first reading on 11 March 2026, 47 of them up by 841 MW in all. 14 of the steps are exactly 1.25 MW, the size of one container battery. 3 one-hour readings in which the feed fell to a fraction of the hour before and came straight back are left out as faults. No step is matched to a name, because Fingrid publishes none.
| Hour | Moved, MW | Count after, MW | Our reading |
|---|---|---|---|
| 15 October 2026, 12:00 UTC | +34 | 2,057 | a battery, or a batch, added to Fingrid’s model |
| 15 October 2026, 11:00 UTC | +8.8 | 2,022 | a battery, or a batch, added to Fingrid’s model |
| 24 September 2026, 14:00 UTC | +1.2 | 2,013 | a battery, or a batch, added to Fingrid’s model |
| 24 September 2026, 13:00 UTC | +9.9 | 2,012 | a battery, or a batch, added to Fingrid’s model |
| 23 September 2026, 11:00 UTC | +5.4 | 2,002 | a battery, or a batch, added to Fingrid’s model |
| 15 September 2026, 12:00 UTC | +2.5 | 1,997 | a battery, or a batch, added to Fingrid’s model |
| 14 September 2026, 07:00 UTC | +10.0 | 1,994 | a battery, or a batch, added to Fingrid’s model |
| 11 September 2026, 08:00 UTC | +3.8 | 1,984 | a battery, or a batch, added to Fingrid’s model |
| 3 September 2026, 08:00 UTC | +132 | 1,980 | a battery, or a batch, added to Fingrid’s model |
| 28 August 2026, 14:00 UTC | +194 | 1,848 | a battery, or a batch, added to Fingrid’s model |
| 28 August 2026, 13:00 UTC | +41 | 1,655 | a battery, or a batch, added to Fingrid’s model |
| 18 June 2026, 09:00 UTC | +1.2 | 1,614 | a battery, or a batch, added to Fingrid’s model |
| 15 June 2026, 11:00 UTC | +3.8 | 1,613 | a battery, or a batch, added to Fingrid’s model |
| 15 June 2026, 10:00 UTC | +4.8 | 1,609 | a battery, or a batch, added to Fingrid’s model |
| 11 June 2026, 14:00 UTC | +1.2 | 1,604 | a battery, or a batch, added to Fingrid’s model |
| 11 June 2026, 12:00 UTC | +1.2 | 1,603 | a battery, or a batch, added to Fingrid’s model |
| 11 June 2026, 09:00 UTC | +2.5 | 1,602 | a battery, or a batch, added to Fingrid’s model |
| 11 June 2026, 08:00 UTC | +1.2 | 1,599 | a battery, or a batch, added to Fingrid’s model |
| 8 June 2026, 12:00 UTC | +1.2 | 1,598 | a battery, or a batch, added to Fingrid’s model |
| 5 June 2026, 12:00 UTC | +17 | 1,597 | a battery, or a batch, added to Fingrid’s model |
| 5 June 2026, 07:00 UTC | +30 | 1,579 | a battery, or a batch, added to Fingrid’s model |
| 1 June 2026, 10:00 UTC | +1.2 | 1,549 | a battery, or a batch, added to Fingrid’s model |
| 1 June 2026, 09:00 UTC | +121 | 1,548 | a battery, or a batch, added to Fingrid’s model |
| 29 May 2026, 08:00 UTC | +1.2 | 1,427 | a battery, or a batch, added to Fingrid’s model |
| 29 May 2026, 07:00 UTC | +7.2 | 1,426 | a battery, or a batch, added to Fingrid’s model |
| 26 May 2026, 10:00 UTC | +1.2 | 1,418 | a battery, or a batch, added to Fingrid’s model |
| 26 May 2026, 07:00 UTC | +1.2 | 1,417 | a battery, or a batch, added to Fingrid’s model |
| 26 May 2026, 06:00 UTC | +2 | 1,416 | a battery, or a batch, added to Fingrid’s model |
| 25 May 2026, 08:00 UTC | +2 | 1,414 | a battery, or a batch, added to Fingrid’s model |
| 25 May 2026, 07:00 UTC | +5.8 | 1,412 | a battery, or a batch, added to Fingrid’s model |
| 22 May 2026, 13:00 UTC | +23 | 1,406 | a battery, or a batch, added to Fingrid’s model |
| 22 May 2026, 12:00 UTC | +2.5 | 1,383 | a battery, or a batch, added to Fingrid’s model |
| 22 May 2026, 11:00 UTC | +5 | 1,381 | a battery, or a batch, added to Fingrid’s model |
| 22 May 2026, 10:00 UTC | +7.2 | 1,376 | a battery, or a batch, added to Fingrid’s model |
| 22 May 2026, 09:00 UTC | +1.2 | 1,369 | a battery, or a batch, added to Fingrid’s model |
| 21 May 2026, 14:00 UTC | +2.5 | 1,367 | a battery, or a batch, added to Fingrid’s model |
| 21 May 2026, 10:00 UTC | +5.2 | 1,365 | a battery, or a batch, added to Fingrid’s model |
| 18 May 2026, 10:00 UTC | +66 | 1,360 | a battery, or a batch, added to Fingrid’s model |
| 13 May 2026, 16:00 UTC | +8.8 | 1,293 | a battery, or a batch, added to Fingrid’s model |
| 23 April 2026, 09:00 UTC | +13 | 1,284 | a battery, or a batch, added to Fingrid’s model |
| 13 April 2026, 07:00 UTC | +1.2 | 1,272 | a battery, or a batch, added to Fingrid’s model |
| 9 April 2026, 13:00 UTC | +1.2 | 1,271 | a battery, or a batch, added to Fingrid’s model |
| 23 March 2026, 08:00 UTC | +9.9 | 1,269 | a battery, or a batch, added to Fingrid’s model |
| 17 March 2026, 11:00 UTC | +18 | 1,259 | a battery, or a batch, added to Fingrid’s model |
| 17 March 2026, 10:00 UTC | +18 | 1,241 | a battery, or a batch, added to Fingrid’s model |
| 13 March 2026, 11:00 UTC | +1.2 | 1,223 | a battery, or a batch, added to Fingrid’s model |
| 11 March 2026, 17:00 UTC | +6.8 | 1,222 | a battery, or a batch, added to Fingrid’s model |
The same hours drawn as the line on the Finland page.