Capenhurst 100MW BESS Project

Project Location:
Capenhurst
Client Name:
H&MV Engineering / Zenobe Energy
Challenge
Working in close proximity to National Grid live assets.
On-time commissioning of key technologies.
Programme critical milestones to meet handover deadlines.
Interface with multiple stakeholders.
Completion of Stage 1 and Stage 2 commissioning, with bespoke equipment.
Solution
Close collaboration with the client, utilising an integrated commissioning team ethos.
OCU developed detailed Commissioning and Inspection & Test plans.
Full commissioning of NGET 275kV Bay.
New first and second main protection and all associated interface works.
SCADA and protection and Control interfacing.
Full turnkey solution for bespoke equipment commissioning.
Commissioning of 275/33kV SGT and 2 x 33kV/400V Aux TX’s
Commissioning of 8 Panel, 33kV Switchboard
Commissioning of 28 x 33kV Skids, each consisting of a 33kV RMU & 33kV/400v TX.
Project Description:
Capenhurst is a 100MW Battery Energy Storage System (BESS) connected to the National Grid (NGET) at 275kV.
Key Stats:
First Battery Storage project in the world with a commercial contract to absorb reactive power direct from a Transmission Network
First Battery Storage Project to connect directly to the Transmission Network in the UK
Was the largest transmission connected Battery Storage project in Europe
Was the first Battery Storage project in England to use the Revised Planning Regime to enable 100MW Battery Storage
3 months
Duration

Outcome
Project successfully delivered to programme schedule and budget.
OCU provided staff trained to TP141 Commissioning Authorisation which enabled project delivery.
Project was fully completed and handed over with zero harm during delivery.
Full regulatory and legislation compliance was achieved, with no Environmental incidents.
Successful delivery of the project which contained contained Reactive Power Mechanism.