Technology to store energy is being trialled at Anglian Water’s Cambridge Water Recycling Centre.
The systems use batteries from electric vehicles to collect and store energy with the stored electricity then used to power the site at times when demand is highest, taking pressure off the electricity grid as well as saving money.
Much of the site’s power needs are already met using renewable energy; its Combined Heat and Power (CHP) engines run on gases produced by the sewage treatment process.
The batteries themselves are British designed and developed. The E-STOR technology uses second life Renault electric vehicle batteries to provide a smarter, affordable and more flexible approach to grid load management. Operating software allows users to maximise efficiencies and savings by storing excess energy when it is needed most, such as times of peak demand or when energy tariffs are high.
Matt Pluke, Anglian Water’s Energy Manager, said: “Energy, in the form of grid electricity, is an important part of Anglian Water’s cost and carbon footprint. It’s not just about how much energy we use but also about when we use it. By using the batteries in this way we put less strain on the National Grid at peak times and also save money by avoiding high energy tariffs.
“This kind of technology is a great example of how we can reuse items as part of a wider circular economy. Reducing the amount of grid energy we use by maximising our use of renewables as well as embracing new technologies is good for the business and great for the environment, too.
“This is the start of an exciting journey for battery storage in Anglian Water. This trial will provide the detailed data we need to prepare for a wider roll out across the region.”
Jason Cox, from Connected Energy Limited, which has developed the E-STOR energy storage technology, said: “The energy landscape in the UK has shifted. The debate isn’t just about how much energy we use, it’s also about when we use it. Anglian Water and Connected Energy have worked together on this energy storage trial to help maximise the potential of renewable energy projects and offer grid services support for the future.”
