Substation & Power Infrastructure Design

​

At Cannon Power Solutions, we deliver full-spectrum design and engineering services for AIS and GIS substations up to 400kV, supporting both new build and upgrade projects across the UK transmission and distribution networks.

 

Our team brings deep technical knowledge and practical delivery experience to ensure substation designs are:

 

Technically sound and compliant with DNO/TO specifications

 

• Aligned with buildability, maintainability, and safety standards

 

• Integrated with upstream/downstream infrastructure and grid interfaces

 

We support clients through all design stages—from feasibility and concept design through to detailed construction drawings and as-built documentation.

 

Our substation design services include:

 

• Site layout and general arrangement drawings (buildings, switchgear, structures)

 

• Primary plant specification and layout (transformers, circuit breakers, disconnectors, CTs/VTs)

 

• Secondary system design — protection, control, intertripping, alarm systems

 

• Earthing and bonding system design to BS EN/ENA and DNO standards

 

• HV cable routing and duct design including cable trench layouts and sizing

 

• Civil and structural interface support (building foundations, bunds, fencing, access roads)

 

• Auxiliary systems design — LVAC, DC systems, lighting, ventilation

 

• SCADA and telecoms interface design

 

• Detailed compliance review against TO/DNO frameworks, G81, ENA TS, NGESO tech standards

 

We work with developers, EPCs, ICPs, and asset owners to deliver substation designs that not only meet approval requirements but also support efficient construction, commissioning, and long-term operation.

 

Whether your project involves a new 33kV contestable substation or a major 400kV transmission upgrade, Cannon Power Solutions offers reliable, coordinated, and grid-compliant design support tailored to your project needs.