
Windsor, Berkshire's trusted HV, MV & LV Switchgear Design & Installation Contractors
With over 40 years of experience in HV, MV and LV switchgear installation and commissioning, Oltec Services is one of the most trusted names working across Windsor, Berkshire. Our team of qualified electrical engineers provides complete solutions, including power distribution transformers, protection and control systems, battery systems, cable management and substation installation. Whatever the size, whether a single package substation or a complex, multi-site turnkey installation, we bring the experience, technical capability and dedicated resource needed to deliver.
☎️ 0800 038 9786
✉️ info@oltecgroup.co.uk
✔ Established 40+ years ✔ Fully accredited
✔ Nationwide coverage ✔ 24/7 emergency support

Expert HV, MV and LV Switchgear Installation and Commissioning
At The Oltec Group, we deploy highly trained and competent engineers to design, install and commission HV, MV and LV switchgear for clients throughout Windsor, Berkshire and the wider UK. Our installation scope encompasses the full range of primary and secondary equipment, including Protection and Control Systems, Power Distribution Transformers, Transformer Rectifiers, Battery Systems, power and control cabling, fibre cabling and all associated cable management systems and ancillary equipment. Our experience spans the full project spectrum, from standard package substation installations to complex, large-scale turnkey installations requiring full system commissioning. We work closely with clients, main contractors and consulting engineers to ensure the installation process is managed efficiently and that all works are completed in line with the relevant technical standards and safety requirements. Our commitment to quality and our depth of expertise make us the switchgear installation contractor of choice for a wide variety of industries and sectors.
Specialist Substation Installation Teams Working Nationwide
The delivery of a successful substation installation project depends on the quality and experience of the teams on the ground. At Oltec FM, our dedicated Power Installation specialists bring years of hands-on experience to every substation, compound, control room and cable run installation they undertake. Working throughout Windsor, Berkshire and on a nationwide basis, our engineers have extensive knowledge of the full substation build process, including the installation of equipment frameworks and plinths, modular substation units, generator systems and protection panels. We work across a wide range of sectors and project types, from utilities and renewables to industrial and commercial environments, and our teams are fully trained to work safely and efficiently in all of these settings. If your project requires experienced substation electricians who understand the importance of quality, compliance and programme delivery, our Power Installation teams are ready to support you.


Experienced Switchgear Installers and Substation Electricians
Part of what sets Oltec Facilities Management apart from other switchgear contractors is our ability to manage every aspect of the installation process, including specialist lifting operations and plant movement activities. Our teams are fully trained to carry out these activities safely and efficiently, ensuring your project stays on schedule and that all equipment is positioned correctly and without damage. With extensive experience of working with switchgear from many different manufacturers, our installation engineers are comfortable with a wide range of equipment types and configurations. Across Windsor, Berkshire and the rest of the UK, our substation electricians install cable management systems relevant to the site environment and specification, followed by the installation of all power, control and fibre cabling. Small power and lighting installation completes our scope, meaning clients who choose us benefit from a single contractor capable of delivering the full electrical installation works within their substation or switchroom project.
Contact Our Expert Team Today for Turnkey Electrical Solutions
Reducing supply chain management demands is a priority for many of our clients, and our complete substation build capability at Oltec Services is specifically designed to address this need. With experienced teams covering every element of the electrical substation installation process, from equipment framework and plinth installation through to HV and LV switchgear installation, protection and control systems, cable management, power and control cabling and small power and lighting, we offer a genuinely end-to-end service that removes the need for multiple specialist contractors. Based in Windsor, Berkshire and working on projects throughout the UK, we have the resource, the accreditations and the track record to deliver complete substation builds efficiently and to the highest standards of quality and safety. If you would like to find out more about how our complete substation build service could benefit your project, please do not hesitate to get in touch with our team, who will be delighted to discuss your requirements and provide further information.


