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By Application: EV Charging

Battery storage for EV charging

Battery energy storage to support electric vehicle charge points; providing additional capacity and helping to decarbonise charging.

Powering EV charging

As the demand for electric vehicles grows, more charging will be required in workplaces, fleet depots and in public places. To charge at scale, there is often a requirement for more power capacity than is available on site. Battery energy storage can provide an alternative option to EV charging load management.

Many sites have connection constraints which mean that they can only access a certain level of power from the grid. It’s a common misconception that a battery energy storage system must be combined with sun or wind generation. In fact, our systems can work on a site to store available power from the grid to help manage the site load and provide flexibility for constrained sites.

Supporting high powered EV charging

We are now at a pinch point in our EV transition, where sites require many more chargers, including chargers with higher capabilities. Currently, supply constraints are restricting the ability to meet demand.

HPC charging stations, or ultra fast charging stations, are becoming essential if EVs are to become a part of daily life, allowing us to charge more vehicles in less time – shorter charging times will mean a higher utilisation.

Installing ultra fast charging stations are going to be vital in high-traffic areas, i.e. along motorways, petrol stations, retail chains, and for fleet operators.

Avoid expensive grid upgrades

On sites without the power required for EV charge points

  • Install EV chargers, or additional charge points on otherwise constrained sites
  • Ensure load requirements do not exceed connection constraints
  • Optional active and reactive load management
  • Draw all power from the battery if required
  • Uses OCCP to actively start a charge with the battery

Provide a buffer to manage peak load spikes

For sites experiencing peak loads at certain times of the day

  • Provides a longer-term solution to load balancing
  • Boost the capacity on site by using the battery
  • Adapt charging profile to reduce conflicts with other site loads and tariffs
  • Add capacity that could also benefit other site loads

Decarbonise charging

Offer greener and cheaper energy 

  • Linked to solar PV to use clean energy for charging
  • Cost savings by maximising renewable generation: storing energy in the battery for evening use
  • Supports fleet and site decarbonisation
  • Provides a circular economy approach – charge on-vehicle EV batteries using repurposed EV batteries.

NEW FOR 2024: Find out more about the benefits of battery energy storage for EV charging in our new guide.

Case Study

Supporting one of the UK's most innovative EV fleet charging installations

Two E-STOR systems, installed at Nottingham City Council’s Eastcroft Depot, will demonstrate how a fleet depot can intelligently manage the energy demands caused by vehicle electrification. The systems will work alongside bi-directional EV charging, solar to demonstrate a new energy ecosystem.

Case Study

Supporting Dundee to manage peak load spikes

As part of Dundee City Council’s EV charging hubs, our system monitors grid loads to ensure the demand can always be met and that the council does not exceed the capacity on site. Our battery storage feeds directly from the PV array maximising green energy and reducing costs.

Case Study

Providing vital capacity to motorway sites

In Germany and Belgium, our systems are supporting Allego to enable charging on grid-constrained motorway sites. The lack of grid connection means that battery storage is an integral part of every charge, providing the additional capacity needed and using Open Charge Point Protocol to activate a charge.

Fully charged: our E-STOR system can power: 20 cars charging at 7kW for 2.5 hours

Why choose Connected Energy?

Easy integration

of battery storage with EV chargers

Years of experience

working with EV charging companies

Energy optimisation

across a whole site’s assets

Full service

from site surveys to aftercare

Project management

that supports EV installation timelines

Finance options

to help minimise upfront costs

Calculate your eligibility for battery energy storage

Why not calculate whether battery energy storage is right for your EV charging site and requirements with Connected Energy’s brand new calculator?

As part of a campaign to drive forward the potential use for battery energy storage alongside EV charging infrastructure, we’ve launched an online calculator to guide users to understand their own opportunity to utilise BESS.

To get started with the calculator, you will ideally need information from your energy bill or have knowledge of your energy usage to get an accurate reading. Our calculator will offer a result as to whether BESS may be right for your site and requirements, helping to overcome some of the key barriers to charge point deployment.

Let's connect!

Get in touch with our team to discuss whether battery energy storage can work for your business, and how we can offer a free feasibility study.

Connected Energy system illustration