Buildings, access, and security provide physical protection and security for the onshore electrical equipment that connects the wind farm to the onshore transmission network.
What it costs
About £11 million for a 450 MW floating offshore wind farm.
Who supplies them
The buildings, access, and security can be contracted to any suppliers with suitable track records of supplying to similar types of civil engineering projects.
The buildings and associated compounds are custom designed to suit the specific technical and planning requirements of the project.
For an HVAC substation, indoor space is required for housing some of the switchgear, monitoring systems, and associated LV systems and welfare facilities for visiting technicians. Often about the same area of outdoor space is required for compounds for outdoor HV switchgear, termination of HV overhead lines, storage, and car parking.
For an HVDC substation, indoor space, typically at least two storeys high, houses the HVDC converter, monitoring systems, and associated LV systems and welfare facilities for visiting technicians. Outdoor space is also needed for compounds for outdoor HV switchgear, termination of HV overhead lines, storage, and car parking.