Connections Design
Culham Campus - 11 kV Ring Main and Multi-Utility Project
Enable Design provided detailed civil and utilities design for the Culham Campus perimeter route, supporting two 11kV ring mains, six Ring Main Units (RMUs), water mains and data ducting through a constrained operational research environment.
Completed Design - RIBA Stage 4
Client: UK Atomic Energy Authority (UKAEA)
Scope: 2 × 11 kV ring mains, 6 RMUs, HDPE water main and communications ducts
Scale: 1.8 m of trench and roadworks across four route legs
Role: Lead civil designer - route selection, utility coordination, civils design
Design Disciplines: ICP / Multi-Utility Civils
Civil & Site
1.8km open-cut perimeter trench through roads, concrete slabs and soft landscape, including D400 chambers, utility crossings and protection of existing campus infrastructure.
SCADA & Controls
Six integrated T300 smart RMU units provided for the ring-main network, with duct access, enabling future integration with the proposed T3 substation and wider campus network.
Electrical
Two 11kV HV ring mains in ducted trefoil routes, with six RN2d/T300 RMUs distributed around the campus, incorporating jointing pits, cable routes and utility separation throughout the network design.
Multi-Utility
Coordinated HV, water and data distribution corridor, tying the perimeter network back to the T3 interface while protecting existing live services across a secure campus.
Reading Independent Feeder -
33kV HV Feeder Cable & ATFS Substation
Enable provided civil and HV engineering design for a new independent 25 kV feeder to Reading –a new Holly Cross Auto Transformer Feeder Station (ATFS) and a 17 km lineside HV cable route fed from the Bramley National Grid 400 kV site.
Design Disciplines: ICP / Multi-Utility Civils
Client: Network Rail
Scope: New Holly Cross ATFS, 25-0-25 kV HV cable route, National Grid 400 kV interface and lineside fibre telecoms
Scale: ≈ 17 km lineside HV cable route through bridges, embankments and culverts
Role: Principal Designer & Principal Contractor - design and installation
Civil & Site
Full enabling and civils to form the ATFS platform on a greenfield site – site clearance, bulk earthworks, haul roads and access, drainage, culverts and retaining structures, Under Track Crossing (UTX).
Electrical
New Holly Cross Auto Transformer Feeder Station and 25 kV HV cable route, delivering an independent supply route to Reading ATFS within the 25 kV RATS network.
Integration into the existing SCADA master station at Didcot Electrical Control Room (ECR), with IPC scheme, device settings and IP network design, plus factory and site acceptance testing.
Grid & Telecoms
National Grid 400 kV interface at Bramley and a new lineside fibre / FTN telecoms route linking Holly Cross and Reading ATFS to the Basingstoke and Reading core nodes.
SCADA & Controls
- ZEHID Electric Freightway
Maritime Transport John Gilbert Way Depot11kV grid connection Case Study
Enable Design provided multidisciplinary civil and electrical design for a new eHGV charging hub at John Gilbert Way providing a new substation, LV distribution network, EV charging infrastructure, cable routes and utility coordination to support DNO/IDNO approvals within a live operational logistics depot.
Completed Design - Concept → DNO Approval → Detailed Design → Construction Support
Client: Gridserve
Scope: Civil, electrical and utility design for a 5-bay eHGV charging hub - HV connection, substation and LV distribution infrastructure
Scale: 5x360kW eHGV chargers, new 2 MVA substation, 3000A LV pillar + ~250m 11kV cable route
Role: Lead designer multidisciplinary coordination, DNO/IDNO interfaces, statutory approvals
Design Disciplines: ICP / Multi-Utility Civils
Civil & Site
Site layout, HGV bay coordination, trenching, duct bank details, resurfacing requirements and as-laid record updates within an operational depot environment.
Electrical
HV and LV design coordination including substation interfaces, RMU/LV pillar requirements, feeder pillar design, cable schedules, earthing and SLD package development.
Design of a 5-bay eHGV charging hub, including charger locations, cable routing, HGV swept-path coordination and depot integration.
Coordination with ENWL and Last Mile for design approval, adoption requirements, metering updates, legal plan interfaces, MPAN/EVCP paperwork and energisation submissions.
EV Charging Layout
EV Charging
Interface
Why Enable Design for ICPs?
Experienced. Civil-engineering-led. Ready to support your next grid connection design.
Proven Delivery
ICP-Relevant Design
Culham Campus: 2 × 11 kV ring mains, 6 RMUs and 1,782 m multi-utility civil design.
HV Expertise
Cable Route & Substation Civils
Reading Independent
Feeder: 17 km HV cable route, Holly Cross ATFS civils and National Grid interface support.
DNO / IDNO Ready
Contestable Works Mindset
Designs developed with adoption, buildability and compliance in mindsupporting ICPs from feasibility through to construction support.
Full Compliance
RISQS, CDM, Quality & Assurance
Principal Designer capability, ISO 9001 Quality, ISO 14001 Environmental Management and ISO 45001 Occupational Health & Safety Management. Rail industry accredited RISQS for under track cable crossings (UTX)
Zero Gaps
Design + Delivery Insight
Civil, electrical, planning and HV grid knowledge in one coordinated teamstrengthened by close working with sister EPC contractor Enable Infrastructure.
Ready to Design Your ICP Project?
Enable Design is actively supporting ICPs with civil engineering design for HV cable routes, substations, railway crossings, and multi-utility connections. Get in touch for a quotation.
