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High Voltage Electrical Engineering Experts
We are a specialist engineering consultancy dedicated to delivering high-voltage electrical transmission and distribution design solutions. Established by experienced professionals from United Utilities/Norweb, we provide comprehensive services from concept to decommissioning for overhead lines and underground cable circuits up to 400kV. Our in-house expertise covers steel lattice towers, wood poles, and thermomechanical calculations, ensuring precision in every project. We prioritise innovation, utilising cutting-edge technology to enhance design processes and staff development. Our commitment extends to supporting clients in achieving net-zero carbon emissions by 2050 through sustainable engineering practices.With a legacy of senior authorised personnel, we offer advanced operational insights into high-voltage systems. Our multidisciplinary teams handle civil design, substation layouts, and utility protection projects across diverse landscapes. We specialise in risk mitigation during project planning, ensuring minimal disruptions to time, cost, and quality. Our services include fault repairs, cable leak detection, and project management for both urban and rural installations. Backed by ISO 9001, 14001, and 45001 accreditations, we maintain rigorous standards in quality, environmental responsibility, and occupational health and safety.
Services
Overhead Lines Design
HV Cable Installation
Substation Design
Plant Installation
Utility Services
Civil/Electrical Design
Fault Repairs
Route Planning
Risk Mitigation
Project Management
Highlights and features
- We offer 20+ years of experience in high-voltage electrical engineering.
- Our team utilises patented design processes for enhanced project efficiency.
- We guarantee compliance with ISO 9001, 14001, and 45001 standards.
- Our engineers hold senior authorised person status for HV systems.
- We provide end-to-end project management from feasibility to commissioning.
Associations and certifications
- ISO 9001
- ISO 14001
- ISO 45001
Services
Overhead Lines Design
We deliver comprehensive overhead line design services, including route feasibility, structural analysis, and detailed engineering drawings. Our expertise covers steel lattice towers, wood poles, and temporary/permanent diversions. Using PLS CADD software, we optimise structure spotting and clearance calculations to ensure safety and compliance with industry standards.
HV Cable Installation
Our HV cable services include route design, thermomechanical analysis, and project management for urban and rural installations. We handle trial hole investigations, wayleave negotiations, and cable pulling calculations to minimise risks. From fault repairs to full route replacements, we ensure precise execution across varying terrains and engineering challenges.
Substation Design
We provide end-to-end substation design, from feasibility studies to commissioning. Our services include GIS layouts, SF6 testing, and safety standby support. We conduct risk assessments during planning to mitigate issues, delivering pre-tender solutions that reduce cost variations and ensure compliance with operational standards.
Utility Services
Our utility team specialises in mechanical protection for gas, water, and telecoms infrastructure. We handle projects involving bridge structures, high-pressure gas mains, and congested utility areas. Services include tender documentation, construction monitoring, and as-built surveys to ensure safe and compliant installations.
Civil/Electrical Design
We integrate civil and electrical design for holistic project solutions. Our capabilities include foundation design, asset condition assessments, and environmental surveys. We produce detailed technical specifications and manage procurement processes, ensuring seamless coordination between electrical systems and civil infrastructure throughout the project lifecycle.
Questions
What high-voltage services does EDES offer?
We specialise in overhead line design, underground cable installation, substation engineering, and utility protection projects up to 400kV across the UK.
Are EDES engineers certified for HV projects?
Our team holds ISO 9001, 14001, and 45001 accreditations, with senior authorised personnel experienced in HV/EHV systems.
How does EDES support net-zero goals?
We integrate sustainable practices into all projects, focusing on energy-efficient designs and materials to help clients achieve net-zero emissions by 2050.
Can EDES handle complex urban installations?
Yes, we manage projects in inner-city, urban, and rural areas, including high-pressure gas main protection and telecoms infrastructure.
What project phases does EDES cover?
We provide end-to-end services from feasibility studies and design to construction management, commissioning, and as-built documentation.
