Mercedes Converts Coal-Powered Storage Plant Over To Batteries

JUN 22 2018 BY MARK KANE 10

Daimler, through its subsidiaries Deutsche ACCUmotive and Mercedes-Benz Energy, partnered with The Mobility House and GETEC ENERGIE in a project to convert a coal-fired power station (built in 1912 and recently shut down) into an energy storage system

Battery energy storage of 1920 battery modules for the third generation electric smart – 9.8 MWh

The  9.8 MWh and 8.96 MW ESS was installed in Elverlingsen in South Westphalia, Germany. The ESS consist 1,920 new battery modules for the third generation electric smart, that are envisioned as replacement parts (for up to 600 cars).

Daimler intends to have such “live replacement parts stores” because lithium-ion batteries needs to be cycled from time to time anyway over the years. It opens the way for a double usage purpose – to help maintain the grid and store spare batteries.

For Daimler, battery energy storage is growing business with more than 40 MWh installed so far, including two earlier large projects:

  • 12.8 MWh: 2nd life battery storage plant that opened in Elverlingsen in 2016
  • 17.4 MWh: replacement part storage facility in Hanover

More about the project:

Added value at the beginning of the battery life

The “active” storage of the lithium-ion battery modules at the ENERVIE AG power station site in Elverlingsen is like a fountain of youth for the battery systems used for electric mobility. To be usable as a replacement, a battery needs regular cycling during the storage period – deliberate, battery-conserving charging and discharging. This prevents exhaustive discharge which can lead to a battery defect. At the same time the partners are reacting efficiently to the growing demands to compensate grid fluctuations and are presenting an attractive business case, as the systems provide a service on the German market for primary balancing power before they are potentially used in electric vehicles from Daimler AG. A maximum reaction time of 30 seconds is required to ensure grid stability. The storage system in Elverlingsen reacts much faster – within milliseconds. The requirements for frequency control and the compensation of grid fluctuations are far exceeded here.

Shining example of the energy turnaround

The “live replacement parts store” based on electric car battery systems was constructed in Elverlingsen on the site of the former coal-fired power station that was built in 1912 and recently shut down. The large storage plant is therefore a symbol for the transformation in the storage and use of energy – away from fossil electricity grid supply and towards a sustainable extension of the e-mobility value chain that reduces CO2. With the replacement part storage concept The Mobility House AG, GETEC ENERGIE AG and Daimler with its subsidiaries Accumotive and Mercedes-Benz Energy are creating a new kind of win-win situation and supporting the progress of the energy turnaround.

The project partners

The aim of The Mobility House is to advance the energy turnaround and to make a zero-emission future possible. The cooperation partners are working towards an electric mobility breakthrough with innovative charging and energy storage solutions. Existing and new technologies enable the integration of electric vehicles into the power grid as aggregated swarm batteries of moving electric cars or as stationary accumulators from vehicle batteries. The Mobility House was founded in 2009 and cooperates with all leading automobile manufacturers in more than 10 countries worldwide from its locations in Munich, Zurich and Sunnyvale (California).

GETEC ENERGIE – as a company of the energy services group GETEC, GETEC ENERGIE AG develops individual, demand-driven solutions relating to power and gas supply and the marketing of energy. Together with TMH, GETEC is a partner in Coulomb GmbH.

Categories: Daimler, ESS, Mercedes

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10 Comments on "Mercedes Converts Coal-Powered Storage Plant Over To Batteries"

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I’d love to see Tesla do this with the Navajo Generating Station in AZ, combined with covering the CAP canal in enough solar to run the canal. Would also be awesome to see Tesla work with the Navajo nation to replace those coal jobs with clean energy ones.


Nope. Far better to have them convert that to nuclear power. As it is, that coal is burned and pollutes the states and forest to the east (that would be me). Then they sell the energy to … CALIFORNIA. Go figure. Right?
If they were to convert to Nuclear power, and put batteries in mini-grids, we would have a better system.

Likewise, if your idea is to help save the earth from global heating/climate change/AGW, then you MUST install solar on rooftops or over parking lots. This will convert light that was converting to heat into power. OTOH, taking light that was feeding plants, is simply a horrible mistake and a repeat of those that pushed coal over nuclear power.

Bill Howland

This article doesn’t really say precisely how it will be used, but a 9800 kwh battery seems to be a relatively small installation. Of course the turn around time is faster, but I’m sure some california homes use this much energy per month, if not double that. The fact that they mention no additional wind or solar power generation means they are just reducing their ‘Demand Contracted For’ charge. I’m under the impression there are no monthly demand charges in Germany as such, but there is the former, and having co-located batteries for the plant will reduce that.


9800kWh. I don’t use this much in a year.

If you use energy in Germany above a certain threshold you will be metered and billed in 15 minute intervals. The more erratic your change in energy consumption is the more expensive it gets. While power gets cheaper the more you use they don’t like intermittent loads so they cost a premium.


If that is true, then you are either a poor German, or a RIch one.


We are a 4-person house. Last year we consumed approximately 6000 kWh which was a record for us. The number you’re quoting is probably the total german power consumption (including factories etc) divided by citizens.

Mr. M

The number you quoted is with all industry included. The average consumption for a 4 people family ist 2.800-3.500kWh/year. With some efficient devices we get it down to 2.100kWh/year. 4people, clothing dryer included.


I used something like 3200kWh per year as a single. Most of my countrymen do less with a family.


amazing how Mercedes follows Tesla.


The actually interesting thing (that also sets this apart from Tesla) is that they want to use this as a place to “store” spare batteries and have them create revenue along the way, though this would mean they had to produce a surplus first, which they currently don’t