INSIDE EVs - Daimler’s subsidiary ACCUmotive and enercity (Stadtwerke Hannover AG) are developing one of the largest lithium-ion energy storage systems in Europe.

The 15 MWh ESS, built from around 3,000 battery modules, will be launched by the end of 2016 in Herrenhausen, Germany.

Interesting is that it will be a “living storage” with new replacement battery modules from the smart fortwo electric drive that will be employed in the ESS to keep it in perfect condition (charging/discharging from time to time and in optimum temperature range).

“What makes it particularly special is the fact that this is a spare parts storage facility for electromotive battery systems. Around 3000 of the battery modules, determined for the current smart electric drive vehicle fleet, are being pooled to create a stationary storage facility at the enercity site in Herrenhausen. With a storage capacity totalling 15 MWh, the installation is one of the largest in Europe. After completion, the energy storage facility will be marketed on the German primary balancing energy market. The storage facility is already the third major project for Daimler AG in this business sector.

2012 saw the launch of the third-generation smart fortwo electric drive and since then it has been convincing customers around the world. The next generation of the electric city car is now at the ready. But what actually happens should the battery become unusable? Automotive manufacturers are of course prepared for this eventuality and have suitable replacements available. In terms of efficient use of resources, partners Daimler, ACCUMOTIVE and enercity are now treading a unique path. Through the “living storage” of replacement batteries, they are creating an attractive business case that, in this form, can only be achieved together by an automotive manufacturer and a power supply company.

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