BESS-Einbeck
24 MW, 64 MWh (2.6 hours) in Einbeck, Niedersachsen, registered as operating since 8 January 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-Einbeck | SEE927922085253 | 24 | 64 | 8 January 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 |
|---|---|---|
| RheinEnergie Speicher Einbeck GmbH ＆ Co. KG | Amtsgericht Köln HRA 38153 | Köln, Nordrhein-Westfalen |
Owner. RheinEnergie AG, Cologne. Reported in the trade press and not yet confirmed by the owner or the commercial register. Evidence: SMA press release, 14 July 2026: "the Cologne-based energy supplier RheinEnergie AG". Checked 16 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
| Owner, as published | RheinEnergie AG (Cologne energy supplier) is the client; register operator RheinEnergie Speicher Einbeck GmbH & Co. KG SMA press release, 14 July 2026 |
| Trades its output | RheinEnergie Trading, RheinEnergie trading subsidiary SMA press release, 14 July 2026 |
| Built by | SMA Altenso, EPC partner for planning, engineering and construction, and ongoing O&M SMA press release, 14 July 2026 |
| Battery system | SMA Sunny Central Storage UP inverters; battery container maker not named SMA press release, 14 July 2026 |
| Power, as the owner gives it | 24.5 usable SMA press release, 14 July 2026 |
| Energy, as the owner gives it | 64 usable SMA press release, 14 July 2026 |
| Energy, as the owner gives it | 62.5 in the pv magazine article body (headline says 64) pv magazine Deutschland, 15 July 2026 |
| In operation, as the owner gives it | Fully operational, announced 2026-07-14 (register first commissioning 2026-01-08) SMA press release, 14 July 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 | EAM Netz GmbH |
| Connected at | medium voltage |
| Municipality | Einbeck, district of Northeim |
| State | Niedersachsen |
| Permit | Stadt Einbeck, Bauschein Nr.: 52.10.02.10 BG-039/2024-Fe |
| Registered position | 51.8103, 9.8445 |
| Register location | SEL961542420834 |
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 30 January 2026; last changed in the register on 30 January 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.