BESS Jardelund
48 MW, 48 MWh (1 hours) in Jardelund, Schleswig-Holstein, registered as operating since 1 April 2018. 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 Jardelund | SEE999790559914 | 48 | 48 | 1 April 2018 | Lithium | checked |
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 |
|---|---|---|
| EnspireME | Amtsgericht Kiel HRB 18230 | Kiel, Schleswig-Holstein |
Owner. Eneco and Mitsubishi Corporation, joint owners as of 2018. From the owner’s own publication. Evidence: Eneco press release, 31 May 2018: "the joint owners Eneco and Mitsubishi Corporation". 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 | EnspireME, jointly owned by Eneco and Mitsubishi Corporation (shares not stated) Eneco press release, 31 May 2018 |
| Built by | Installed by NEC Energy Solutions Eneco press release, 31 May 2018 |
| Power, as the owner gives it | 48 MW Eneco press release, 31 May 2018 |
| Energy, as the owner gives it | More than 50 (register holds 48.0 MWh) Eneco press release, 31 May 2018 |
| In operation, as the owner gives it | 2018-05-31 officially put into operation Eneco press release, 31 May 2018 |
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 | TenneT TSO GmbH |
| Connected at | the extra high to high voltage transformer level |
| Municipality | Jardelund, district of Schleswig-Flensburg |
| State | Schleswig-Holstein |
| Registered position | 54.8509, 9.1945 |
| Register location | SEL926192843211 |
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 18 January 2021; last changed in the register on 18 January 2021. 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.