Phase 5 and Phase 6 EV Infrastructure
Design development for a high-capacity EV bus depot charging scheme at Merton Bus Garage, London.
Design development for a high-capacity EV bus depot charging scheme at Merton Bus Garage, London. The project involved the coordination of feeder pillars, multiple 600 kW power cabinets, satellite chargers, AC and DC cable infrastructure, protection arrangements and operational site constraints. The design was progressed through multiple revisions as charger requirements evolved, while maintaining effective risk management, interface coordination and delivery planning within a live operational transport facility.
A phased single-line design was developed showing feeder-pillar connections, power cabinets, satellite chargers, AC distribution circuits, CPCs, control cables and data cabling, providing clear visibility of the complete electrical architecture.
The design was maintained through a controlled revision process, incorporating charger updates, cable route changes, additional DC circuits and final cable coordination while ensuring the latest information was captured at each stage.
Mitigation measures were defined, including utility record reviews, GPR surveys, trial holes, supply-characteristic verification, O-PEN assessment requirements, operational shutdown planning and formal RFIs to obtain critical design information.
The final design coordinated a complex EV charging infrastructure deployment within a live operational bus depot while managing changing project requirements and multiple engineering interfaces. Structured design control enabled the integration of feeder pillars, 600 kW power cabinets and satellite chargers, while clearly defining AC and DC responsibilities between project stakeholders. Utility risks, excavation hazards, supply verification requirements and operational shutdown constraints were addressed through a proactive risk-management strategy. The project demonstrates how disciplined information management and phased infrastructure coordination can support large-scale transport electrification programmes.
Design of a capacity-constrained EV charging scheme where the proposed charging infrastructure required significantly more power than the available network capacity.
Design development for a high-power EV charging infrastructure scheme at Booths Keswick.
Design coordination for a microgrid site that initially came in as a HV metered scheme.
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