Basildon BESS

Increasing resilience of the UK network.

Basildon BESS is our first two-hour battery in the UK.

Project overview

Basildon BESS is a 28 MW / 56 MWh Battery Energy Storage System located in Essex, England, to the east of London.

To meet net zero by 2050, the UK Government has committed to decarbonise the electricity system by 2035. Battery storage is a critical enabler of this transition, helping to store and shift renewable generation to times of day when it is most needed, while helping to balance electricity supply and demand second-by-second.

Basildon BESS provides vital flexibility to enable more renewable generation and increase the resilience of the UK electricity network. The project supports the National Grid in this important network location close to other generation sources including a solar PV farm and two gas-fired peaking power stations, critical 400 kV Substations and the upcoming grid upgrade from Tilbury to Norwich.

Key Facts

United Kingdom
Basildon, Essex
Storage capactiy -
28 MW / 56 MWh
Current status -
Operational
Since
June 2025

Acknowledgement
of Country

Project timeline

Current Status
1. Development

The site is selected and we are engaging with the local community to introduce the project and gather feedback before lodging all required studies for Development Approval (DA) by local councils and regulatory bodies.

Current Status
2. Pre-Construction and Financial Close

Once the Development Approval (DA) is received, we negotiate contracts with suppliers and offtakers, and secure financing of the project  ahead of financial close.

Current Status
3. Construction

We mobilise to site for ground-breaking and start building the project.

Current Status
4. Operations

Now the BESS is ready to deliver additional storage capacity to the grid and is managed by a team to ensure it operates as intended.

Current Status
5. Decommissioning

After 20+ years of its intended operational life, the BESS is decommissioned and the site is restored.

Basildon

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