We're looking to install two offshore substations. The purpose of these substations is to collect the electricity generated by the wind turbines via the inter array cables and step up the voltage before transmitting it to shore via the export cables. The offshore substations will be steel-framed structures housing electrical equipment. The topside structures will be manufactured onshore and then installed offshore on to pre-installed foundations, which are likely to be jacket-type structures.

The total height of the substation is likely to be up to 45m above Lowest Astronomical Tide (LAT). The substations are expected to be marked for navigational purposes in a similar way to the wind turbines.