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It’s the scale of virtually two basketball courts and consists of 4,400 battery modules: the brand new battery storage system to provide the Porsche Plant Leipzig with energy. The extraordinary factor is that this stationary vitality storage system was constructed out of used Taycan batteries. They had been taken from precollection and works autos and at the moment are being put to make use of as a stationary vitality storage system on the finish of their service life.
With the “Second Life” idea, Porsche is demonstrating how used high-voltage batteries from electrical autos might be put to good use and preserve assets in a second use part. The mission thought originated within the Environmental and Vitality Administration unit of the Stuttgart-based sports activities automotive producer.
A round economic system, sensible vitality provide and extra
The mission supplies necessary insights into the way to provide an automotive plant with vitality in an clever trend. It additionally facilitates the enlargement of an adaptable energy grid. “After all, that is about environmental features and the core concern of the vitality provide. But it surely was additionally necessary to us to take a pioneering position with the storage system,” says Alwin Schmid, Head of Electrical Engineering at Porsche, explaining the targets of the mission.
Schmid is the initiator of the mission, which was based mostly on a feasibility research in collaboration with the College of Utilized Sciences Zwickau. “On this unprecedented mannequin mission, we had been in a position to mix a variety of totally different targets, together with peak load capping, optimisation of self-consumption and simultaneous participation within the vitality market.” This versatility when it comes to utilization makes the Porsche pilot mission distinctive within the subject of commercial vitality storage.
From the mission thought to implementation
“The mission exemplifies how we are able to use assets sustainably and mix this dedication with enterprise effectivity,” says Albrecht Reimold, Member of the Government Board for Manufacturing and Logistics at Porsche AG.
“We wished to create electrical energy storage capacities for the Leipzig plant in an effort to make the location much more economical and to extend its diploma of self-sufficiency. So it was solely logical to make use of batteries from Taycan preseries autos as an alternative of recycling them,” explains Jonathan Dietrich, general mission supervisor for battery storage. “We hope to achieve insights from the mission so as to have the ability to equip different Porsche areas with related programs and capabilities sooner or later. On the similar time, we are able to utilise batteries from take a look at vehicles which might be not appropriate for demanding use within the automobile for a second helpful deployment earlier than their closing recycling.”
“Energy cubes” — the technical construction
The technical specs of the stationary battery storage system are spectacular: The entire capability is 5 megawatts with an vitality content material of 10 megawatt-hours. The storage system might be operated at as much as 20 per cent overload for brief intervals. It’s made up of 4,400 particular person battery modules, divided into 4 battery containers.
The battery modules used within the gruelling on a regular basis work of take a look at autos had been put in within the vitality storage system with none technical adjustments. The 4 battery strings are every related to an inverter and a transformer in a medium-voltage system. Your entire system, together with the battery blocks, is designed for a helpful lifetime of greater than ten years; particular person battery modules might be changed individually if obligatory.
Energy storage for the plant and a part of the vitality transition
The electrical energy for the storage system is partly generated by the plant’s personal photo voltaic programs with a peak output of 9.4 megawatts. When peak masses happen, the storage system helps to cut back them. This “peak shaving” is changing into more and more necessary on this period of upper electrical energy necessities as a consequence of electromobility, warmth pumps and different electrical customers, as capped load peaks not solely cut back grid expenses however ideally can even cut back the necessity for expanded upstream grids.
Quickly controllable vitality storage programs such because the system on the Leipzig plant additionally play an necessary position within the vitality market. The stationary battery storage system might be built-in into the balancing vitality market in each marketable type by the tip of the 12 months — together with, along with peak shaving, as a grid stabiliser for the upstream distribution grids.
Porsche manufacturing — carbon-neutral and utilizing renewable vitality
Porsche manufacturing at its websites in Zuffenhausen, Leipzig and Weissach has been carbon-neutral since 2021. Since 2017, Porsche has been utilizing solely electrical energy from renewable vitality sources. The manufacturing websites in Stuttgart-Zuffenhausen and Leipzig, for instance, obtain their vitality from inexperienced electrical energy and biomethane. The Leipzig website additionally obtains district heating from biomass.
Article by Porsche. Ekkehard Kleindienst, Spokesperson Manufacturing and Logistics.
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