Why battery storage could become essential for the future of public EV charging

One of the biggest challenges facing the EV transition isn’t actually the cars. It’s the grid behind them.

That’s why InstaVolt’s latest rollout of battery energy storage systems (BESS) matters. The charging provider has opened five new battery-backed charging sites and plans to add 20 more before the end of 2026.

In simple terms, these sites store cheaper overnight electricity in large batteries, then use that stored power during busy daytime charging periods. That helps reduce pressure on the grid, cuts operating costs and allows chargers to deliver faster charging speeds even in areas with limited grid capacity.

For fleets already saving hundreds or even thousands of pounds per vehicle annually through lower fuel and maintenance costs, this kind of infrastructure could push running costs down even further by making charging smarter and cheaper.

It also reinforces a point FleetWise explored recently in its coverage of the Utrecht vehicle-to-grid car-sharing trial. That project showed EVs can effectively become part of the wider energy system itself, storing surplus renewable electricity and feeding it back into the grid when demand rises.

As Rightcharge founder Charlie Cook recently told FleetWise, electricity offers fleets far more flexibility than traditional fuel ever could. Instead of simply buying energy at whatever price is available, fleets are increasingly able to control when, where and how they use it.

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