HV Connections FAQs

Information on HV Connections

1. What is a high-voltage (HV) connection?

A high-voltage connection enables the safe and efficient transmission of large volumes of electricity from the national grid to on-site distribution systems. It is essential for powering energy-intensive environments such as logistics hubs, data centres, airports and industrial estates.

2. Why are HV connections important for modern businesses?

HV infrastructure supports operational continuity, energy efficiency and future scalability. It serves as a strategic asset for businesses, underpinning performance and resilience in sectors where uninterrupted power is critical.

3. What services does TSG  offer for HV connections?

TSG provides a complete HV connection service, including feasibility studies, grid applications, civil engineering, cable laying, substation installation, commissioning and long-term maintenance. All services are delivered in-house to ensure quality, consistency and accountability.

4. Is TSG  accredited to deliver HV infrastructure?

Yes. TSG is fully accredited under the National Electricity Registration Scheme (NERS) and certified by Lloyd’s Register. Through its subsidiary UCP Choice, TSG is authorised to carry out contestable works on behalf of Distribution Network Operators (DNOs).

5. What are the benefits of using TSG for HV connections?

Clients benefit from faster project delivery, cost-effective solutions, certified expertise and future-ready infrastructure. TSG offers end-to-end project management with a single point of contact and transparent communication throughout.

6. How does TSG ensure system performance and compliance?

TSG conducts detailed site assessments, electrical modelling and protection studies to optimise system design. All installations comply with DNO and Independent Distribution Network Operator (IDNO) standards, ensuring safety, reliability and regulatory compliance.

7. What types of infrastructure does TSG install?

TSG installs HV and MV distribution systems, switchgear, transformer cabinets, protection systems, smart metering and Building Energy Management Systems (BEMS). Each system is designed to be scalable and adaptable to future energy demands.

8. How is HV infrastructure maintained?

TSG provides tailored maintenance services, including routine inspections, thermal imaging, partial discharge testing, relay calibration and emergency response. These services help prevent downtime, extend asset lifespan and ensure statutory compliance.

9. What sectors benefit from HV connections?

HV connections support a wide range of sectors, including logistics, manufacturing, aviation, retail and data centres. They are essential for electrification, automation and the integration of technologies such as electric vehicle (EV) charging and smart energy systems.

10. Why choose TSG for HV projects?

TSG is a trusted partner for complex energy infrastructure. With certified expertise, integrated delivery and a commitment to long-term success, TSG helps organisations build resilient electrical foundations for a rapidly evolving energy landscape.