High Voltage Technology SA · Est. 1994
High Voltage Technology provides “Can do” solutions for tough problems in the electricity transmission and distribution industry, from reactive power and substation construction to control, protection and commissioning.
Illustrative image · Kkiefuik, CC BY 4.0
About HVT
High Voltage Technology SA is a specialist high-voltage and medium-voltage engineering business serving the electrical power market in Southern Africa.
Its divisions cover reactive power, control and protection, substation construction and equipment, civil works, renewable energy and transformer field services, with excellent BBBEE credentials and a commitment to the social development of its staff and communities.
Illustrative imageDelivery capability
Supported by strong technical, design and project management abilities, and equipped with supervision, crane trucks, cherry pickers, tools and safety gear.
Core capabilities
Reactive power compensation, FACTS, HVDC and power quality solutions, from capacitor banks and reactors to SVCs and StatComs.
Products and solutions across protection, telecommunication, measurement, automation and control (PTMA&C), through to testing and commissioning.
Design, supply, construction and installation, from equipment erection to turnkey substation construction and refurbishment up to 765kV.
Supplier and installer of high-voltage substation equipment and logistics, acting as local agent for major international OEMs.
Bulk earthworks, foundations, control rooms, earthing systems and overhead lines from 11kV to 132kV for substation projects.
Balance-of-plant, substation design and maintenance, full O&M and HV/MV design, supply and installation for renewable energy plants.
High-voltage testing, oil leak repairs, rigging, tap changer maintenance and oil purification, with 24/7 breakdown support.
Switchgear installation, maintenance, testing and commissioning, plus supply of distribution transformers, mini substations and mobile mini substations.
Credentials & track record
HVT provides skilled labour and project management to help utilities and major project companies build high-voltage substations, from equipment installation to turnkey construction.
Featured projects
220kV transmission substation · Renewable grid connection
The first 220kV transmission substation that a renewable energy project will connect on to the Eskom transmission grid.
Substation construction
A substation project documented in HVT’s project gallery, from platform civils and foundations to steel structures, equipment and the completed yard.
Infrastructure lighting
HVT lighting up the longest bridge in South Africa: the Mount Edgecombe Interchange on the N2 in KwaZulu-Natal.
From a 220kV transmission substation for a renewable grid connection to lighting the Mount Edgecombe Interchange, explore the projects HVT has documented in its own photographs.
View Our ProjectsClient feedback
“I hereby like to compliment your company (HVT) with the high level of safety awareness that your workers demonstrate on site (Prairie, Matla, Duvha and Kriel), also the detailed mitigation plans that your company are using to perform all tasks safely.”
“Please keep up the good work and assist Eskom in putting safety first at all times.”
Safety, health, environment & quality
HVT’s SHEQ office reports directly to the CEO, which has been instrumental in embedding a culture that prioritises SHEQ performance. HVT holds ISO 9001:2015 certification and has a dedicated SHE team and systems.
Enterprise development & social upliftment
HVT is committed to enterprise development. It incubates and assists small and emerging black contractors to facilitate skills transfer and social upliftment, alongside staff home improvements and community initiatives.
Why HVT
What HVT brings to utilities, EPC contractors, mining and industrial clients and renewable energy developers.
01 · Approach
HVT exists to provide “Can do” solutions for tough problems in the electricity transmission and distribution industry.
02 · Breadth
Reactive power, FACTS and HVDC, control and protection, substation construction and equipment, civil works, renewables, switchgear and transformer field services.
03 · Delivery
Crews are supported by an experienced technical, design and project management team, from substation design to testing and commissioning.
04 · Supply
HVT links customers with overseas manufacturers and provides local technical support, procurement, logistics and after-sales advice.
05 · SHEQ
A SHEQ office that reports directly to the CEO, ISO 9001:2015 certification and a full quality, safety and environmental management system.
06 · Region
Based in Gauteng, with reactive power project experience across the region, including Botswana, Namibia, Mozambique, Zambia, Zimbabwe, Swaziland and Mauritius.
Project enquiries
Contact HVT to discuss your high-voltage, medium-voltage or electrical infrastructure requirements.
Fax +27 (0)11 316 7860 · Postal: PO Box 8683, Centurion, 0046
