Rendering of how the BESS site at London Gateway will look. Image: Root-Power.

Root-Power has begun building a large-scale battery storage project in Essex, the developer’s third to enter the construction phase since its launch earlier this year.

The 11MW, 2-hour duration (22MWh) battery energy storage system (BESS) asset is located in London Gateway, the deep-water port on the River Thames’ North Bank.

Root-Power said the site in Corringham, Essex, was ed due to its proximity to the UK Power Networks Coryton substation, from which it will take its name, Coryton Energy Park.

Existing transmission infrastructure will be leveraged, meaning major reinforcements to the grid will not be needed, while the site enjoys a lower cost of connection to the network than comparable projects, Root-Power claimed.

The developer, launched and backed by independent power producer (IPP) YLEM Group at the beginning of this year, has a pipeline of 2GW of BESS projects in development.

Earlier this month, the company said it had lodged 210MW of fresh planning applications for BESS projects, bringing its total in planning to more than 1GW. According to the company’s website, in addition to Coryton, it has two other projects in construction: the 50MW/100MWh Broomloan project in Glasgow and a 12MW project in Tillingdown in Caterham, Surrey.

Root-Power received planning consent for Tillingdown earlier this month. Although it had initially been proposed as a 2-hour duration asset, and is still listed as such on the developer’s website, it is now being built with 4-hour duration (12MW/48MWh).

The Tillingdown project is being built in an area of outstanding natural beauty (AONB) and the developer was granted consent by local Tanbridge Council authorities partly on the merit of its promises to create a habitat bank, which will help secure offsite biodiversity.

In developing the Coryton project, Root-Power said it had to consult extensively with local planners due to flood risk and the presence of protected wildlife species. Coryton is scheduled to go into commercial operation in the first quarter of 2025.

Canadian Solar subsidiary e-Storage has been ed to provide the project’s BESS solution, while Eclipse Power Networks will serve as independent distribution network operator (IDNO). Independent connection provider (ICP) for Coryton will be RJ Power.

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