The Mobility House


The Mobility House, Nissan and TenneT use EVs to overcome grid bottlenecks and save CO2

April, 2020
The Mobility House

As part of a showcase project of the German Ministry (SINTEG), batteries from all-electric Nissan LEAFs were used as storage devices for locally produced electricity to help to stabilize the power grid during peak demand.


The project showcased a vital solution for an increasingly common challenge in the German energy market; where energy is lost due to transport bottlenecks caused by the decentralized feed-in of renewable energies (46% in 2019).

In order to prevent these bottlenecks, TenneT has to limit the surplus of renewable energy in the north of Germany while at the same time increasing power generation in the south from conventional methods – which is high cost, especially at peak times.

To overcome this, the wind power available in northern Germany was used by electric cars in that region. At the same time, electricity from fully charged Nissan LEAF batteries was fed back into the grid instead of increasing fossil fuel generation. The mobility and charging requirements of vehicle users were taken into account during the power sharing. This meant that the utilization of renewable energies increased and the restricted wind power in the north could be reduced, without incurring high costs or losing valuable energy.

The intelligent re-distribution measures were controlled by the software from The Mobility House, the smart Charging and Energy Management system ChargePilot, operating in accordance with TenneT’s specifications.

"The short-term flexibility that electric mobility provides can supplement grid expansion and become an important building block for the energy transition."

The pilot project demonstrates that we can use electro mobility in the future to flexibly control the weather-dependent renewable electricity production. That takes the strain off the electricity grid and helps limit expensive curtailment of wind turbines. The short-term flexibility that electric mobility provides can supplement grid expansion and become an important building block for the energy transition.

This technology and equipment can be used to significantly improve the energy sector’s carbon footprint. In 2017 and 2018, more than five terawatt hours of surplus wind power had to be regulated in each case. Every kilowatt hour of unrestricted wind power prevents the emission of 737 grams of CO2 from fossil fuels such as coal. By using electric cars as temporary storage, the e-vehicles could have helped save up to eight million tons of CO2 in 2017 and 2018.

Nissan has been working with The Mobility House on the intelligent integration of electric vehicles into the power grid for a number of years.

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“This important collaboration will significantly help to reduce the reliance on fossil fuels, reduce CO2 intense energy production, avoid curtailment of renewable energy and increase the integration of intermittent renewable energy. By thus the energy transition as well as the growth of electric mobility in Europe will be boosted whilst providing commercial opportunity for aggregators and car manufacturers and cheaper electric vehicle usage for end customers.”

– Marcus Fendt, Managing Director at The Mobility House

Contact details TenneT, for both the Netherlands and Germany:

Axel Kießling, TenneT Netherlands and Germany

TenneT Germany
Bernecker Strasse 70
95448 Bayreuth

TenneT Netherlands
Utrechtseweg 310
6812 AR Arnhem


Website Tennet

Contact details Swissgrid:

Swissgrid AG
Evangelos Vrettos

Bleichemattstrasse 31
P.O. Box
5001 Aarau

T: +41 58 580 21 11

Website Swissgrid

Contact details Terna:

Terna S.p.A. - Rete Elettrica Nazionale
Roma - Viale Egidio Galbani, 70 - 00156

T: +39 06 8313 8111

Website Terna

Contact details APG:

Austrian Power Grid AG
Wagramer Straße 19 (IZD Tower)
1220 Vienna

T: +43 (0) 5032 0161

Website APG