FLOW sub-structures are enormous. The size of a football pitch, ten stories high and weighing up to 20,000 tonnes. Built from either steel and concrete or concrete and secondary steel, sub-structures carry c70% of the cost of the completed unit and c30% of the overall CAPEX.

 The UK, and the Celtic Sea region in particular, has significant capability and capacity in concrete and aggregates (demonstrated in the SW by Hinkley-C).  Should FLOW opt for a "design-to-local" approach a shorter supply chain has the benefit of resilience for energy security. Delivery from our region would require early investment but derive significant GVA and jobs for the UK.