High & Low Voltage Installation Services

Site Energy Services is one of a select number of electrical contractors that has the credentials, expertise and certification needed to provide a complete range of High and Low Voltage Installation services.

Site Energy Servicesis a leading independent electrical contractor, working with a diverse range of customers in the utility, industrial and commercial sectors. We provide a unique range of high voltage solutions and services for the design, installation, inspection and maintenance of high voltage electricity supplies.

We have a highly qualified and experienced team at Site Energy Services and deliver electrical construction, inspection and maintenance of transmission and distribution networks from 415V to 33kV. The company’s standing in this field is highly credible and well respected.

Senior Authorised Persons ensure complete safety and integrity for switching, isolations and earthing on private networks.

Key Capabilities 

Our customers 

Utilities: Water Authorities, Regional Electricity Companies, Telecommunications

Industry: Automotive, Petrochemical, Manufacturing, Aviation

Commercial: National Retailers, Logistics, Health Authorities, Education Sector

Government Embassy’s


Our full and complete service covers design and feasibility studies, installation, testing and commissioning, both for new installations and refurbishments up to and including 33kV.

This applies to switchgear, transformers and all ancillary equipment through to complete substations. We also support major underground cabling schemes up to 33kV incorporating excavation, cable laying, re-instatement and jointing. We promise that all works are delivered with full project management and financial control.

Our expertise in the field of high voltage distribution networks also extends to the systems and equipment employed to protect them, providing complete reassurance of safety and integrity.


We are pleased to be able to offer our customers a comprehensive range of maintenance contract agreement packages.

You will know that your high voltage network must be inspected and maintained on a regular basis and our tailor made solutions are designed with the objective of total safety, efficiency and reliability.

Our service offering includes asset management of plant and associated equipment, system management and performance, which of course incorporates the provision of 24/7 support, should you require it.

Emergency response 

To further enhance our service offering, we can incorporate emergency cover into our packages, to ensure supply is restored as quickly as possible.

Health & Safety and Quality Assurance 

We take Health & Safety and Quality Assurance very seriously, operating management systems in accordance with the relevant industry standards, working to the strictest rules and regulations.

We give you our word that we will always comply with the Health and Safety at Work Act 1974, the Management of Health and Safety at Work Regulations 1999 and the Electricity at Work Regulations 1989.