The SA10 and SA11 postcodes cover Neath town and the Vale of Neath running north from Resolven through Glynneath. The yield baseline sits at 950 to 955 kWh/kWp. The domestic market is predominantly Victorian and Edwardian terrace in the town centre, with interwar semi-detached at Cimla and Skewen.
Town-centre terraces and SolarEdge
Neath town centre terraces face the standard South Wales inter-row shading geometry. In a standard string-inverter installation, a single shaded panel limits the output of every panel in its string. SolarEdge panel-level optimisation removes that constraint.
In Neath’s town-centre terrace stock, SolarEdge typically recovers 10% to 15% of annual generation compared with string inverter baseline — worth approximately £107 to £160 per year on a 4 kWp system at 28p/kWh. FLD specifies SolarEdge as the default for all SA10 and SA11 terrace properties.
Cimla: the semi-detached opportunity
The Cimla estate north of Neath is predominantly 1930s and post-war semi-detached with roof pitches well-suited to solar. A 4.5 kWp south-facing Cimla semi generates approximately 4,298 kWh annually at 955 kWh/kWp. At 40% self-consumption, year-one benefit: approximately £800. On £7,800 installed cost, simple payback: 9.75 years.
Battery storage
A 7.5 kWh battery paired with a 4 kWp Neath installation adds approximately £220 to £265 of annual value above the solar-only case. Combined solar-plus-battery payback for a complete new installation runs at 9.5 to 11 years.
Skewen coastal fringe
Skewen, at the southern boundary of SA10 where the Vale opens onto the Neath estuary, carries a slightly higher yield of 960 kWh/kWp and includes 1960s and 1970s estate properties with shallow-pitched roofs generally suitable for frame-mounted panels.
Vale of Neath villages
Properties in Resolven and Glynneath (SA11, northern SA10) sit deeper in the valley. PVGIS figures here run at 940 to 945 kWh/kWp. FLD uses site-specific shading assessments for Vale of Neath properties rather than applying postcode averages.
Getting a Neath survey
FLD is 12 minutes from Neath. We combine SA10 and SA11 domestic surveys with Baglan Energy Park commercial visits. Call Paul on 01792 680611.
