New EV charging stations use second-life batteries for energy storage

Renault has teamed up with UK-based Connected Energy to install two electric vehicle quick-charge stations that use a stationary energy storage system at highway rest areas.

The E-STOR system developed by Connected Energy uses second-life batteries from Renault electric vehicles.

Electric vehicle batteries typically have a vehicle life of 8-10 years, but they can still be used for stationary applications after that – extending their life before recycling.

With the E-STOR system, the batteries are charged during periods of low electricity demand when it is cheaper. They can then be used as an alternative source of electricity at peak times, when prices are higher. The system also makes it possible to offer electric vehicle charging in locations where constructing a high-power grid connection would be very costly.

“We are developing a range of E-STOR systems; some, like the two installed in Belgium and Germany, are designed specifically to enable lower cost more sustainable electric vehicle charging so it’s very great to see these in action” commented Matthew Lumsden, Managing Director of Connected Energy. “We are now talking to several parties about projects in the UK and Europe and look forward to wide-scale roll-out in coming months.”

Connected Energy’s E-STOR systems can also be used for load management on industrial and commercial sites, providing a complementary power source at peak tariff times. E-STOR works with a company’s onsite solar PV, or micro wind turbines, storing and releasing energy directly into site systems. It can also generate new revenue streams by providing balancing services to the grid operator.

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