Weymouth regularly tops the sunshine tables, which puts it at the upper end of the 950 kWh per kWp we use for the coast. The housing is mostly Victorian terraces and semis in the centre and along the Dorchester Road, with post-war estates at Wyke Regis, Littlemoor and Preston. Terraced roofs are narrow but often south-facing, and a 2.5 to 3.5 kW system on a terrace here outperforms a bigger one inland.
Sea on three sides means salt, and the mounting and connectors are specified for it. Portland in DT5 is covered too; its exposure means the survey pays particular attention to wind loading.