Service
High Voltage Installations

What we do
High Voltage Installations
Unity Power Ltd has vast experience, and undertake High Voltage (HV) Installation Works incorporating the Design, Installation, Testing, and Maintenance of Electrical Systems operating above 1,000V AC or 1,500V DC, typically up to and including 132kV. We provide turnkey solutions within the Industrial, Commercial, and Energy Transition / Renewable Energy sectors. Our services include the installation of HV Switchgear, Transformers, and Cabling systems, alongside Substation Construction and Commissioning by our certified experts.
Such HV Installation Work Projects that we have been involved in have been critical for large-scale Power Distribution in Industrial Plants, Hospitals, Data Centres, and Renewable Energy sites such as Battery Energy Storage, Solar and Wind schemes.
Capabilities
High Voltage Installation Capabilities
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01
Feasibility & Design
We can utilise advanced software to create Electrical System Layouts, Earthing Designs, and Protection & Control Schemes, which comply with British and International Standards. We can create Overall Scheme Layouts and Substation Layouts to ensure system safety and efficiency.
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02
Procurement & Civil Works
We can procure and manage the purchase of Major Electrical Infrastructure Components and Civil Engineering Works for the likes of DNO / Customer Substations, inclusive of their Foundations, Trenching, and Construction.
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03
Project Management
Our Operations Team consisting of experienced Programme and Project Managers can oversee timelines, budgets, and compliance through our dedicated Project Management Procedures and Planning Tools. We also have extensive experience in chairing and attending Project Review and Health, Safety and Environmental Meetings with the production of Daily / Weekly / Monthly Reports.
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04
Infrastructure Construction
We can undertake Substation Civil Works, including Building construction, trenching for cables, and structural foundations, inclusive of remedial and extension works.
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05
Equipment Supply & Installation
Supply, Delivery, Installation and Commissioning of Switchgear (11kV to 132kV), Transformers (up to 400kV), and Circuit Breakers / Switchgear inclusive of Vacuum or SF6 Interrupters ranging from 3.3kV to 132kV.
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06
Cabling
Our dedicated Cable Team can undertake High Voltage Cable Pulling using industry-standard methods, whether it be for DNO’s or on Private Networks.
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07
Cable Jointing & Termination
We are specialists, undertaking approved works on Cables like Triplex, XLPE, or PICAS to ensure secure connections.
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08
Renewable Integration
We have been involved in over 1.8GW of Energy Transition / Renewable Scheme Projects to date, and have the capabilities for connecting Onshore Wind Farms, Solar Farms, and Battery Energy Storage Schemes (BESS) to the Grid. Our services also include the provision of SAP support.
Guaranteed
Project Delivery
Our structured delivery model ensures technical accuracy, safety compliance and programme alignment at every stage:
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Feasibility planning and electrical system design
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Procurement, mobilisation and project coordination
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HV infrastructure, substation and cabling installation
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Inspection, testing and commissioning compliance
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Energisation, maintenance and operational handover
Safe and compliant
Unity Power Ltd delivers safe, compliant and high-quality High Voltage installation solutions across substations, renewable energy developments, battery energy storage systems and wider critical infrastructure environments.
Contact Unity Power Ltd to discuss your next High Voltage Installations project.