Overview

Experts throughout the UK and Ireland

At SSE Enterprise Contracting we have the largest team of directly employed High Voltage (HV) professionals delivering the broadest scope of HV services in the UK and Ireland. We pride ourselves on our strong safety culture which underpins our excellent safety record.

Unique team of High Voltage professionals

Our national team of High Voltage engineers, Senior Authorised Persons (SAP) and Craftsmen provide a full end to end service of design, installation, operation and maintenance. From supporting the safety and resilience of your HV network infrastructure  to providing 24-hour emergency response for unplanned power supply interruptions. We are at the heart of business continuity.

If it’s not safe, we don’t do it

Safety is our number one priority and we approach everything with the attitude of if it’s not safe we don’t do it. This culture has lead us to develop our own set of operational safety rules based on the Energy Networks Association (ENA) Model Distribution Safety Rules.

Working nationally with operating voltages of 11, 33 & 132kV

Our services are reinforced by the SSE Enterprise control centre providing operational control of IDNO and private HV Networks through the latest Electricity Network Management and Control (ENMAC) software. This ensures the coordination of our field operatives and can also provide remote control of isolated sites.

We are an accredited contractor for the National Electricity Registration Scheme (NERS) undertaking design and installation of electricity supply connections as an Independent Connections Provider (ICP) to Distribution Network Operators and Independent Distribution Network Operator HV networks.

A broad scope of HV services

Whether you operate a single HV transformer or are installing a complex network, we work nationally across all market sectors to design, build, operate and maintain your HV infrastructure. SSE Enterprise will work to improve the resilience of your HV infrastructure and through our strategic supply chain we can keep your critical assets operating effectively. At SSE Enterprise Contracting we have the largest team of directly employed High Voltage (HV) professionals delivering the broadest scope of HV services in the UK and Ireland. We pride ourselves on our strong safety culture which underpins our excellent safety record.

Please scroll to the bottom of the page for our HV maintenance reminder service.

 

Broadest range of high voltage services

Design and Build

HV engineering

You are in safe hands

At SSE Enterprise Contracting, we take the time to understand your needs before designing and building the HV infrastructure to power your organisation. We have a strong heritage built on our commercial relationships with DNO, IDNO, and private networks and pride ourselves on our capacity to deliver from design to handover.

Extensive experience

Working across all market sectors, we have built strong long-term relationships with over 900 HV network customers. Through a combination of our skills and expertise, we are at the centre of both large and small HV infrastructure projects, network upgrades and robust improvements. Our team of HV designers utilise the latest design software and work hand in glove with our engineers to deliver robust supply networks.

Voltage and installation

Our team of directly employed HV engineers are authorised to operate with 11, 33 & 132kV networks. With a national reach, we provide design and build services to a variety of customers including, hospitals, utilities, MOD, Petrochemical and renewable generation sectors.

Upgrading and reinforcing infrastructure

The UK’s ageing HV networks require upgrading to improve energy efficiency and supply resilience to meet our increasing demand for reliable energy. At SSE Enterprise Contracting, we work with our customers to ensure their networks continue to operate safely, efficiently and minimise unplanned supply interruptions.

Pre-designed construction projects – We also undertake pre-designed construction projects through tendered or negotiated contracts.

Our High Voltage services

From the design and build of a new installation to ongoing maintenance contracts, SSE Enterprise Contracting covers all your HV needs:

  • Consultancy
  • Design and build
  • Updating safety and environmental considerations’
  • Civil engineering of substations
  • Network assessments to advise on HV transformer upgrades, switch-gear replacement and cable overlays

We offer a reminder service so your High Voltage system maintenance is a matter of course. Please scroll down to the form below.

Maintenance

HV maintenance

Ensuring your network’s resilience 

Our customers place their trust in our national team of 250 qualified HV experts to deliver first class HV maintenance on their network. In fact, our engineers are responsible for ensuring over 1,200 private HV networks in the UK and Ireland operate effectively and are compliant with statutory regulations.

As a customer of SSE Enterprise Contracting you will benefit from a tailored approach that will meet your specific requirements.

Comprehensive range of maintenance services

As an appointed HV maintenance provider, SSE Enterprise Contracting will:

  • Comply with all relevant statutory regulations
  • Carry out routine non-intrusive substation inspections
  • Undertake routine intrusive maintenance
  • Notification of nationally reported defects
  • Assess network resilience
  • Advice on how to improve energy efficiency

And we offer three service level agreements for HV Maintenance:

COMA (Control, Operation and Maintenance Agreement) consists of the following services:

  • The site delegates full operational control of the network to SSE Enterprise Contracting
  • SSE Enterprise Contracting Undertake all maintenance and operational requirements in accordance with the statutory regulations

OMA (Operation and Maintenance Agreement) provide the following service level:

  • The customer retains full operational control of the network
  • SSE Enterprise Contracting are the nominated maintenance provider and undertake all maintenance and operational requirements in accordance with the statutory regulations

Ad hoc Agreements will require customers to,

  • Retain full operational control of their network
  • Organise all maintenance and operational activity to their own requirements

Free reminder service

We offer a reminder service so your HV system maintenance is a matter of course. Please scroll down to the form below.

 

Cabling

est

National expertise

Our team of NERS accredited and certified HV engineers excel at safely delivering High Voltage (HV) and Extra High Voltage (EHV) cabling services throughout the UK and Ireland. We are experts at working in remote and hard to reach locations. Furthermore, our strategic joint ventures coupled with our strong and established supply chain enables us to tackle even the most complex of projects.

HV & EHV Cabling 

From cable ploughing and horizontal directional drilling to connecting remote wind farms and even help to enable inter-connection projects, our project teams have the capacity to meet every challenge.

We work on any terrain, offering the following services;

  • Cable installation, termination and jointing
  • Cable containment installation
  • HVDC (High Voltage Direct Current) transmission
  • EHV Cabling
  • Cable routing
  • Cable ploughing
  • Pressure testing
  • End-to-end project management

 

High voltage maintenance free reminder service

Set a completely FREE, no obligation reminder for when your high voltage maintenance and inspection are due. This service is available to everyone, even if you haven't used our services before.

Our engineers can help you determine what tests you need, and advise you of the recommended inspection and maintenance frequency as they can vary from 6 months to 4 years.

In order for us to inform you when your high voltage maintenance and inspection are due, please complete the form below and we will contact you either by email or phone a few weeks before to give you a gentle reminder.

Inspection of substations

Maintenance of high voltage equipment / networks

If you have more than one site, please either provide details in this box or set another reminder.

 

 

Sector Insights

Discover more about:

Get in touch