Major Works

From design and supply through construction, installation, testing, and commissioning, we handle electrical distribution systems from Low Voltage up to 132kV whether new builds, asset replacements, or refurbishments.

We offer complete High and Low Voltage distribution packages for substations and networks, leveraging our expertise to provide reliable electrical solutions. Our experience in operating, and maintaining systems, combined with customer insights, positions Granite as a leader in power distribution engineering.

Granite surveys and designs all aspects of substation and feeder routes, using documented management processes across Independent Connections, Primary Major Projects, and HV Contracting. These ensure quality standards, assign qualified staff to designs, and require thorough checks before approval. Staff are trained according to our selection and development procedures.

· Full network design for underground installations

· Cable laying and jointing (LV and HV)

· Asset installation including substations

Granite delivers comprehensive LV, HV, and EHV substation services, from design to commissioning, including advanced switchgear and transformers.

Our services include:

· Design

· Substation location

· Infrastructure installation

· Testing and commissioning

We also provide flexible containerised solutions and have extensive experience with 11kV to 132kV systems, ensuring safe, efficient, and scalable energy infrastructure.

Safety is integral to our substation projects. Our experienced staff manage all aspects of testing, commissioning, and safety documentation, including protection relays and HV switchgear. Senior Authorised Personnel oversee works for Distribution Network Operators and other clients, ensuring compliance and operational safety.