Great Oak Energy Hub

Project status

Project Design
Community Consultation
Planning Application Submission
Planning Consent Granted
Construction
Operational

Where

Knepp Estate, Sussex
What

Battery energy storage
Network Connection Capacity

400 MW
Equivalent household power use

800,000 homes for 2 hours when fully charged
Annual CO2 emissions saved

110,000 tonnes
Targeted Operational Date

2031
Project Development Size

5 hectares of infrastructure, 12 hectares of landscaping
Project Lifespan

40 years

The Great Oak Energy Hub is located on the Knepp Estate to the south of Horsham in Sussex. Planning consent for the project was granted in April 2025 by Horsham District Council.

The project will connect directly to the High Voltage transmission line carrying electricity from offshore wind farms off the south coast of England towards London.

By 2030, more than 2,000 MW of wind and solar generation will be connected near to the site and the project will play a key role in delivering a reliable, low carbon electricity supply for homes and businesses in the south east of England.

Project overview

BIODIVERSITY BENEFITS

The Knepp Estate was once intensively farmed, but for the past two decades has undergone a remarkable transformation, evolving into a trailblazing rewilding project. This ethos is exemplified by the presence of free-roaming grazing animals, whose activities play a pivotal role in driving the process-led regeneration of the land.

In line with Knepp’s ethos, the project will be underpinned by meticulous planning and environmental stewardship. Clearstone Energy and land management, woodland and ecology specialists from the Knepp Estate have worked together on a scheme that will connect isolated woodland, create wetland and still enable periodic grazing and the benefits that animals and scrubland bring to biodiversity.

Construction materials and site management will be sustainable and ethical where possible.

Bramford storage – 400MW battery energy storage project

Bramford Storage is a 400MW battery energy storage project in Suffolk that will connect to the UKs electricity transmission network alongside more than 4GW of wind, solar and nuclear generation.

DARTFORD Energy Hub – 300MW battery energy storage project

Dartford Energy Hub Public Consultation

Warley Energy Hub – 200MW battery energy storage project

Warley Energy Hub Public Consultation

Worset Lane Energy Hub- 200MW battery energy storage project

The Worset Lane Energy hub is a 200MW battery energy storage project that will connect to UK’s electricity transmission network at Hartlepool and support the growth of offshore wind generation in north east England.

Junction 27 Energy Hub – 400MW battery energy storage project

Junction 27 Energy hub is a 400MW battery energy storage project that will connect to UK’s electricity transmission network in Devon and support the delivery of a secure, reliable and clean electricity supply to homes and business in the south west of England.