Where will old electric vehicle batteries die?

The answer is that they don’t “die”. Instead, after service in a car, they can be “integrated” into energy storage systems.

This is because lithium batteries do not fail catastrophically when they have reached the end of their useful life in the vehicle. They may become less able to cope with the rapid loading and unloading rates needed to accelerate a 1-2 ton mass, or accept a high loading rate. But there is still a lot of life in them.

In reality, used batteries are still quite capable of coping with the smoother charge and discharge rates seen in stationary storage systems for as many years or more as those who have seen life in a car.

It can be the ultimate solution to cheap 24/7 home storage systemsand the scenario most likely to provide most of the support needed to create a robust electricity grid based on renewable energy than V2G (vehicle-to-grid) type systems.

One of the companies offering this type of second-life battery solution is car manufacturer Renault, which has two second-life battery programs in conjunction with local partners.

One is the SmartHubs project in West Sussex, (UK) and the other is the Advanced Battery Storage project in Douai (France). These are two of the largest projects of this type in Europe.

The SmartHubs project involves the installation of a number of 360 kWh E-STOR systems (engineered by Connected Energy) placed at industrial and commercial sites, some linked to solar panels and EV chargers for help sites reduce energy costs and optimize energy consumption. renewable energy.

A large E-STOR Cluster system will also be installed which uses approximately 1,000 second life batteries to store 14.5 MWh of energy. This will charge and discharge quickly to help balance the power grid. It will store enough energy to power 1,695 average homes for a full day.

The SmartHubs project is one of four projects launched by the UK government to help design the energy systems of the future. SmartHubs systems will work with other technologies as part of a local energy system to help provide cleaner, lower cost energy for use in social housing, transport, infrastructure, homes and local businesses.

In Douai, France, the first Advanced Battery Storage was installed at the Renault Georges Besse plant, with a storage capacity of 50 MWh at different sites.

Energy storage systems help regulate and stabilize the grid by charging the batteries when demand is low and returning the energy contained in these batteries to the grid as soon as demand is high again.

The advanced battery storage system uses second-life batteries, as well as new batteries stored for later use in the aftermarket, for a total capacity of almost 5 MWh. The Advanced Battery Storage system is set up in collaboration with the partners Banque des Territoires, Nidec, The Mobility House, Demeter and the Green Transport Modernization Fund.

Together, these projects show how the shift to electric transport can contribute to the development of an integrated energy economy, helping us all move towards a cleaner and more robust energy system.

But not only large companies and facilities can access this type of second-hand batteries, the Spanish company Batterysecondlife, sells battery systems for the storage of solar energy for electric vehicles. One of the great advantages of this type of battery is its very competitive price.


Even if you dare, you can make a self-consumption storage battery yourself.

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