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E-STOR battery energy storage

Our E-STOR battery energy storage products help businesses manage and use their energy, integrating with energy assets on site and supporting energy optimisation. Modern technology, flexible software, suitable for multiple applications, the E-STOR is designed for commercial applications.

E-STOR battery energy storage

We’re not just about innovative systems – we’re about finding ingenious solutions.

Our E-STOR product is just part of the bespoke solution we provide – backed by intelligent software, exceptional service and lifetime support.

Our Products

Meet our E-STOR system

  • Power: 300kW
  • Capacity: 360kWh
  • 20ft container
  • Using 24 second life Renault EV batteries
  • Single or multiple systems working together
  • Straightforward to install
  • Easy to manage
  • Easy battery replacement

A flexible configuration to BESS

Our E-STOR battery energy storage can be used individually or as multiple systems working together. This means that we can scale up to meet the power requirements of our customers. A master controller enables multiple systems to be used as one. Ideal for a site’s energy optimisation, we work with you to ensure BESS is right for you, looking at grid balancing services, cost and carbon savings, and more. We are also launching M-STOR utility battery storage in 2024.

The ‘gold standard’ in safety

Connected Energy, as a world leader in battery energy storage, has created the gold standard for managing second life EV battery use. Our systems have passed exacting energy sector compliance and validation tests and our control system communicates directly with all batteries to provide real time monitoring and control. Our modular design also means that any batteries can be easily exchanged – keeping our systems running at optimum performance.

Partnering with trusted OEMs

Our second life batteries come from leading OEM brands that we all recognise, with rigorous in-house testing processes, and have spent 10 years proving the BESS concept. We create commercial agreements with OEM partners to ensure visibility on battery health and capacity. We only work with reputable vehicle and battery manufacturers that allow us access to their own testing data to ensure the safety of the batteries we use, and the systems we built.

Coming soon


The next generation of our E-STOR battery energy storage range will include systems from 1MW up to 10MW. Our new M-STOR range of products, released in 2023, are designed for larger, commercial battery energy storage and industrial battery energy storage applications. Suitable for both in-front and behind-the-meter applications. 

How we work

Full turnkey solution: from feasibility to installation

Finance and funding options

Cloud based monitoring, control and reporting software

Service and maintenance

By repurposing used electric vehicle batteries, we’re doing things differently to make second life solutions the best.

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Our software

Connecting our system is our unique back-office software. Our control software can be programmed to respond to changing priorities. Our customer dashboard gives our customers visibility of what’s happening at any time.

Frazer Wagg with data

How we work

Our team will support you through each step of the process. We know battery energy storage is a new technology and we will guide you from the design and specification, installation right through to our service and maintenance.


Feasibility studies

Not sure if battery energy storage is right for you? Our free feasibility studies will help you to understand if battery energy storage will be an asset to your site by modelling your site data.

Energy storage feasibility studies

Finance options

Our Battery Storage as a Service model can help businesses avoid up-front costs through monthly payments, making investing in battery energy storage system simple.

Energy management software reporting dashboard

Get in touch

Interested in finding out more?

Get in touch with our team to discuss whether battery energy storage can work for your business.

Connected Energy system illustration