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Your Trusted Partner for High Voltage Engineering Solutions
EDES is a specialist engineering consultancy with extensive expertise in high-voltage electrical transmission and distribution design. Established by former United Utilities/Norweb engineers, we deliver projects from concept to decommissioning for overhead lines and underground cable circuits up to 400kV. Our in-house capabilities include steel lattice towers, wood poles, and thermomechanical cable calculations, supported by ISO 9001, 14001, and 45001 certifications. We combine cutting-edge technologies like 3D laser scanning with staff development programs to ensure continuous improvement in OHL design and construction.Committed to sustainability, we assist clients in achieving net-zero carbon emissions by 2050 while maintaining rigorous risk mitigation in live substation environments. Our civil design services complement electrical projects through feasibility studies, asset assessments, and detailed foundation specifications. With offices in Manchester and Sofia, we serve UK clients across urban, rural, and engineering-difficulty zones, managing schemes from minor diversions to multi-million-pound refurbishments.
Services
Overhead Lines Design
Underground Cable Installation
Substation Design
Utility Services
Civil/Electrical Services
Highlights and features
- We offer 20+ years' experience in high-voltage transmission engineering
- Our ISO-certified processes ensure quality and environmental compliance
- We provide full lifecycle project management from concept to decommissioning
- Our engineers utilise advanced technologies like 3D laser scanning
- We maintain live substation safety through certified personnel
Associations and certifications
- ISO 9001
- ISO 14001
- ISO 45001
Services
Overhead Lines Design
We design overhead electrical transmission systems up to 400kV, including route feasibility studies, structural analysis, and detailed construction documentation. Our engineers utilise PLS CADD software for optimal structure spotting and clearance calculations. Projects range from temporary diversions to permanent infrastructure across complex terrain.
Underground Cable Installation
Our team delivers underground cable solutions from initial route planning to final commissioning. Services include thermomechanical analysis, pulling tension calculations, and installation supervision through congested urban areas and sensitive environments. We handle projects from minor repairs to full route replacements.
Substation Design
We provide comprehensive substation engineering covering layout design, equipment specification, and safety systems. Our services include SF6 testing, protection grading, and construction support with as-built documentation for both GIS and conventional substations.
Utility Services
Our utility engineering covers mechanical protection, installation, and maintenance of gas, water, and telecoms infrastructure. We manage complex projects involving bridge structures and high-pressure gas mains with full regulatory compliance.
Civil/Electrical Services
We combine civil and electrical expertise for holistic infrastructure projects. Services include foundation design, asset condition assessments, and coordinated electrical-civil project management to ensure technical and budgetary alignment across all project phases.
Questions
What high-voltage engineering services do you offer?
We provide overhead line design, underground cable installation, substation engineering, utility services, and integrated civil/electrical solutions for transmission networks up to 400kV.
Are you certified to industry standards?
Yes, we hold ISO 9001 (quality), ISO 14001 (environmental), and ISO 45001 (health & safety) certifications for our engineering processes.
Do you work on live substation environments?
Our engineers have extensive experience managing projects in live substation environments with certified Senior Authorised Persons ensuring safety compliance.
What geographical areas do you cover?
We operate across the UK mainland, handling projects in urban, rural, and engineering-difficulty areas from our Manchester headquarters.
Can you assist with net-zero carbon goals?
We actively support clients' net-zero targets through sustainable design practices and infrastructure solutions aligned with 2050 emission reduction commitments.
