Carlton Power, a UK-based energy infrastructure company, has won planning permission to develop the “world’s largest” battery energy storage system (BESS) in Manchester, in the north of the UK.

The 1GW project is due to begin commercial operation at the end of 2025 with the start of construction scheduled for the first quarter of 2024.

Before that, the project still needs a final investment decision, but the company says it is in advanced talks with a number of unnamed companies over its potential financing.

The £750m ($963m) battery storage project is Carlton Power’s second major energy project in the UK following the 200MW Trafford Green Hydrogen scheme. Both projects are located in the Trafford Low Carbon Energy Park in Greater Manchester, UK. This is being developed on the site of a former coal-fired power station that Carlton Power acquired in 2008.

“With the approval of the [BESS], this brings the total investment value of the site to £2bn, which will deliver significant economic benefits to the Greater Manchester region and help to deliver the regional net-zero targets,” said Keith Clarke, CEO of Carlton Power, in a statement.

The green hydrogen project won financial support from the UK Department for Energy Security & Net Zero via its Net Zero Hydrogen Fund. It is currently the UK’s largest green hydrogen project, according to the company.

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Carlton Power formed a joint venture with investment manager Schroders Greencoat in May to roll out the construction and development of a series of green hydrogen projects in the UK, including the Trafford project.

Carlton Power also recently secured planning permission for a hydrogen pipeline to be developed at the Trafford site, the company said.

In addition, the Carlton Power projects will be joined by the world’s first commercial liquid air storage system, being developed by Highview Power Storage, at the Trafford site. According to the company, the cryogenic energy storage system will store enough to service 480,000 homes.

“Our [BESS] will make a significant contribution to the resilience of the North West’s energy system and, combined with our green hydrogen scheme and the cryobattery project, underlines Trafford Park’s importance to the energy transition in the region and the journey towards net zero,” said Chris McKerrow, head of Carlton Power’s European BESS development.