Vitreous LabsEnergy transparency

BESS Haßfurt

9.2 MW, 10 MWh (1.1 hours) in Haßfurt, Bayern, registered as operating since 1 August 2021. 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.

UnitRegister numberMWMWhCommissionedBatteryGrid operator check
BESS HaßfurtSEE9066656025839.2101 August 2021Lithiumchecked

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 registerCommercial register entry, as the operator gave itSeat
VPS BATTERY PARK 1 GmbH & Co. KGAmtsgericht München HRA 112856München, Bayern

Owner. Joint venture: VISPIRON ECO INVESTMENT GmbH 40 %, Städtische Betriebe Haßfurt GmbH (the Haßfurt town utility) 40 %, Green Planet Energy eG 20 %, by contribution, through Green Planet Energy eG, Hamburg (Amtsgericht Hamburg GnR 1002), contribution 200 euros; Städtische Betriebe Haßfurt GmbH, Haßfurt (Amtsgericht Bamberg HRB 6373), contribution 400 euros; VISPIRON ECO INVESTMENT GmbH, München (Amtsgericht München HRB 234246), contribution 400 euros. Confirmed in the commercial register. Evidence: Current printout (AD) of Amtsgericht München HRA 112856, retrieved 11 October 2026; last entry 10 December 2025. Partners as entered on 10 December 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 companyStadtwerk Haßfurt GmbH
Connected atmedium voltage
MunicipalityHaßfurt, district of Haßberge
StateBayern
Registered position50.0408, 10.5305
Register locationSEL984713609937

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 31 May 2022; last changed in the register on 31 May 2022. 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.