SMAREG8 Calbe
20 MW, 22 MWh (1.1 hours) in Calbe (Saale), Sachsen-Anhalt, registered as operating since 15 July 2024. Everything on this page is read from Germany’s register of power units and the other published records named beside each fact.
What it is
The register holds this battery as one unit.
| Unit | Register number | MW | MWh | Commissioned | Battery | Grid operator check |
|---|---|---|---|---|---|---|
| SMAREG8 Calbe | SEE901523079712 | 20 | 22 | 15 July 2024 | Lithium | under check |
Power is the net power the operator registered, the most the unit may feed into the grid. Energy is the usable capacity of the unit’s installation. A grid operator check marked “checked” means the grid company has confirmed the entry; “under check” means it has not yet. On the large sites we compared, the register’s commissioning date often came months before the owner’s announced start, which suggests it records first energisation.
Who runs it and who owns it
| Operator in the register | Commercial register entry, as the operator gave it | Seat |
|---|---|---|
| SMAREG 8 GmbH ＆ Co. KG | Amtsgericht München HRB 270455 | Aschheim, Bayern |
Owner. EQT (Transition Infrastructure), which announced its purchase of ju:niz Energy on 5 December 2024; held through Boost Bidco GmbH, through ju:niz Energy GmbH (formerly Smart Power GmbH), Aschheim (Amtsgericht München HRB 277043), sole limited partner; ju:niz Energy GmbH is held 100 % by Boost Bidco GmbH, Aschheim (HRB 301217). Confirmed in the commercial register. Evidence: Current printout (AD) of Amtsgericht München HRA 113857, retrieved 11 October 2026, last entry 13 December 2023; shareholder list of ju:niz Energy GmbH filed 19 November 2025 (HRB 277043); EQT deal at ess-news.com. Smart Power GmbH, the limited partner, was renamed ju:niz Energy GmbH and sold to EQT: deal announced 5 December 2024, new shareholder lists filed 14 February 2025 and 19 November 2025 Checked 11 October 2026. Every battery of this family.
The register names the operator, the company that runs the unit. The owner behind it comes from the commercial register (Handelsregister) or the owner’s own publication, as marked. The register number is the one the operator typed in; on 11 October 2026 we found it wrong or missing for 26 of the companies we looked up.
Who trades it and what it is built from
No published source we have found names who trades this battery, who built it or whose cells it uses. Fields we cannot source are left out.
Where it connects
| Grid company | Avacon Netz GmbH |
| Connected at | the high to medium voltage transformer level |
| Municipality | Calbe (Saale), district of Salzlandkreis |
| State | Sachsen-Anhalt |
| Permit | Salzlandkreis "der Landrat", III/43/2022-01955-KAEM |
| Registered position | 51.9246, 11.7975 |
| Register location | SEL970570995603 |
As registered. The grid company and voltage come from the register’s public unit table; the position is the one the operator registered. See it on the Atlas.
What has changed in the register
First registered on 5 November 2024; last changed in the register on 23 June 2025. No change has shown in our reads since the first, on 10 October 2026.
What this page cannot show
Germany publishes no battery’s metered output. On 11 October 2026 we checked the four public sources that might carry it: the ENTSO-E Transparency Platform, SMARD, the yearly EEG data and the transmission companies’ redispatch records. None gives the output of any German battery, one by one or as a fleet. So this page cannot say what the battery exported, imported or earned, as Britain’s battery pages do.
Sources: Marktstammdatenregister, Bundesnetzagentur, Datenlizenz Deutschland, Namensnennung 2.0: the full export of 15 October 2026 and the public unit table of 15 October 2026. Company details from the register’s market actor table. Owners from the commercial register and the owners’ publications, as marked. Tender awards from the Bundesnetzagentur’s award lists.