Electrical engineering experience across UK EV infrastructure projects

Detailed electrical infrastructure design for a 12-bay eHGV charging facility at Leeds Skelton Lake Services, with charging capacity of up to 350 kW per bay.

The project included multi-megawatt LV distribution, TT earthing, protection coordination, high-load AC and DC cable sizing, detailed underground duct routing and coordination of the charger power equipment.

Project-specific IEC 60287 cable calculations were undertaken to assess the thermal performance of the heavily loaded underground cable systems, including the effects of duct arrangement, grouping, spacing and ground conditions.

A detailed DC leakage assessment was also completed to verify the suitability of Schneider Type A earth-leakage protection upstream of the charging equipment. Manufacturer testing and written confirmation demonstrated that the selected devices would continue to detect AC earth-leakage faults in the presence of up to 1 A of smooth DC leakage, without being adversely affected by DC blinding.

Detailed electrical infrastructure design for the redevelopment of a former petrol station on Oldham Road, Manchester, into a flagship ultra-rapid EV charging destination.

The scheme incorporated Kempower dual-CCS charging pedestals with charging capacity of up to 300 kW, remotely located power banks, accessible and extra-long charging bays, future charging provision and an integrated coffee shop.

The design covered both the AC and DC charging infrastructure, including the high-capacity LV distribution system, AC supplies to the Kempower power banks, DC cable systems between the power banks and charging pedestals, protection coordination, cable sizing, equipment integration and detailed underground duct routing.

Electrical infrastructure design for a regional programme of dedicated rapid-charging sites delivered for Transport for Greater Manchester through the Be.EV network, supporting the transition of licensed Hackney carriage fleets to electric vehicles.

The programme extended across multiple Greater Manchester local authority areas and included the delivery of approximately 30 to 40 charging sites, utilising Swarco Raption 50 rapid chargers to provide dedicated charging provision for licensed taxi drivers.

The work covered site-specific electrical layouts, charger supply design, cable calculations, protection coordination and the development of suitable protective measures for equipment installed within publicly accessible on-street and car-park environments.

A simultaneous-contact risk assessment was also undertaken to assess the interaction between the charging equipment, vehicles and adjacent street furniture, informing the electrical design and the selection of appropriate protective measures.

Detailed electrical infrastructure design for a new ultra-rapid EV charging hub at the Stanley Club in Burscough, Lancashire.

The completed scheme provides four charging bays, including two fully accessible bays, served by two Alpitronic HYC200 chargers rated at up to 200 kW.

The design included a new HV substation and associated LV infrastructure, charger supply arrangements, protection coordination, cable calculations, equipment layouts and underground duct routing.

The project formed part of Zapgo's programme of installing reliable rapid-charging infrastructure at community destinations, providing local drivers with 24-hour access, contactless payment and dedicated charging provision.

Detailed electrical infrastructure design for a new E.ON Drive ultra-rapid charging hub at Mill House in central York.

The scheme incorporated four Alpitronic HYC300 chargers, providing high-power public charging within a constrained urban site. The supporting infrastructure included a new HV connection, package substation, high-capacity LV distribution and a 2,500 A main switchboard arrangement.

The detailed design covered charger supplies, protection coordination, fault-level assessment, voltage-drop calculations and the design of heavily grouped underground cable systems. Digital load management was also incorporated to ensure the charging demand remained within the agreed supply capacity.

The wider scope included coordinated provision for site lighting, CCTV, equipment protection and safe operation within the public car park.

Detailed electrical infrastructure design for a new RAW Charging hub at Merrielands Retail Park in Dagenham.

The scheme incorporated a combination of Alpitronic HYC150 and HYC300 chargers, supported by a new HV substation, feeder pillar and high-capacity LV distribution infrastructure. The charging layout included dedicated rapid-charging bays, priority charging provision and associated external lighting.

The detailed design covered charger supplies, protection coordination, cable calculations, fault-level and voltage-drop assessment, load-management requirements and the design of grouped underground cable systems. The installation was developed around a 500 kVA supply, with the charging demand managed to remain within the available site capacity.