Bute Hydrogen Project 7.1

Bute Hydrogen Project 7.1 is a 2.4 GW battery storage project in planning, connecting to the National Grid (England & Wales) network at Solent Connection Node C 400kV, with capacity due from October 2038. The connection agreement is held by Haldane Energy Project 7 Limited.

Project stageIn planning

Planning (current stage)
Consented (not yet reached)
Construction (not yet reached)
OperatingFrom Oct 2038 (not yet reached)
Closed (not yet reached)

Scoping and awaiting consents are both shown as planning. A connection agreement does not mean the project will be built: many queue projects never reach construction.

Connection details

NESO project number: PRO-004666
Customer: Haldane Energy Project 7 Limited
Technology: Energy Storage System
Total capacity: 2.4 GW
Change in this agreement: +2.4 GW
Capacity effective from: 31 October 2038
Connection site: Solent Connection Node C 400kV
Transmission owner: National Grid (England & Wales)
Connection type: Direct connection to the transmission network
NESO project status: Scoping
Connections reform gate: Gate 1

Connection site

This project connects at a new substation (a “connection node”) that has not been built or located yet.

Projects connecting near Solent Connection Node C · Grid map

Source: NESO Transmission Entry Capacity (TEC) register, downloaded 8 November 2026. Contains data from NESO, licensed under the NESO Open Data Licence. Report a problem