BESS Balzhausen 2 green flexibility
38 MW, 83 MWh (2.2 hours) in Balzhausen, Bayern, registered as operating since 27 April 2026. 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 |
|---|---|---|---|---|---|---|
| BESS Balzhausen 2 green flexibility | SEE931704712701 | 38 | 83 | 27 April 2026 | 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 |
|---|---|---|
| green flexibility BESS Balzhausen 2 GmbH | Amtsgericht Memmingen HRB 21636 | Kempten, Bayern |
Owner. green flexibility, Kempten; Partners Group committed up to 400 million euros of equity in January 2025, through a green flexibility company, presumed (shareholder list not read). Inferred: the operator shares a company address with this family, and its own entry was not read. 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
| Owner, as published | Green Flexibility invested about EUR 35 million and operates the plant ESS News |
| Power, as the owner gives it | 38.5 (register holds 38.3 MW) pv magazine Deutschland, 6 May 2026 |
| Energy, as the owner gives it | 83.4 MWh pv magazine Deutschland, 6 May 2026 |
| In operation, as the owner gives it | Officially commissioned in the week before 2026-05-06 (register 2026-04-27) pv magazine Deutschland, 6 May 2026 |
| Also published | Connected to the LEW Verteilnetz feed-in socket (Einspeisesteckdose) pilot in Balzhausen; grid-oriented operation pv magazine Deutschland, 6 May 2026 |
From published documents: the owners’, builders’ and optimisers’ own announcements and the trade press, each linked. Where the owner’s power or energy differs from the register’s, both are shown and every figure on this site uses the register’s.
Where it connects
| Grid company | LEW Verteilnetz GmbH |
| Connected at | the high to medium voltage transformer level |
| Municipality | Balzhausen, district of Günzburg |
| State | Bayern |
| Land parcel | Balzhausen, 171 |
| Registered position | 48.2515, 10.4920 |
| Register location | SEL972302240821 |
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 7 May 2026; last changed in the register on 12 August 2026. 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.