JBox & IECharge

Gallery JBox & IECharge 1
Gallery JBox & IECharge 1
October 2021
Headquarters 75007 Paris, France

JBox & IECharge - An energy storage system for grid stabilization and EV charging stations

NW developed the JBox®, a battery-based energy storage system, to improve the efficiency of power management. It balances the electrical grid by charging when there is too much production and by injecting the electricity back when consumption is too important. A compact all-in-one device, the JBox is easy to install and to connect to the local distribution grid. The IECharge®, an electric vehicle charging station, is directly plugged to the solution. This enables the battery to release the pressure off the grid during the charge of a vehicle at great power - up to 320 kW. The project aims at creating a strong network of ultra-fast charging stations in order to develop the use of electric vehicles on long distances without having to worry about the autonomy.

Key features

  • The maximum charging power of the IECharge is 320 kW, 16 times faster than usual charging points
  • 40% reduction of CO2 emissions compared to using natural gas generated electricity


  • Around 10 years payback time
  • Charging price 40% lower than other ultra-fast charging stations

Maturity Stage

  • Medium and large scale commercialization
  • Small scale commercialization
  • Initial market commercialization
  • Prototype testing in the real world
  • Prototype testing 1:1 in the lab

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