Solar Estimator
South Wales · Free instant estimate
See what solar could do for you.
Answer four quick questions for a ballpark on system size, savings and payback. It takes about 20 seconds — a free survey gives you exact figures.
Inputs
Tell us about your property
Property01 / TYPE
Monthly electricity spend02 / SPEND
£120/mo
£40£1,500+
Roof direction03 / ASPECT
Shading04 / SHADE
Add battery storageStore daytime solar for the evening
Estimated yearly saving
£1,041 /yr
4.5 kWp system · about 11 panels + battery
Payback
9.7 yrs
25-year saving
£26,035
Yearly generation
4,275 kWh
CO₂ cut / year
0.9 t
Book my free survey
Estimates for South Wales, in GBP, based on typical figures — not a formal quote. Your free survey confirms exact system size, costs and savings.
What’s behind the numbers
- Yield:
950 kWhperkWp/year for South Wales, adjusted for roof aspect & shading. - Import price
£0.28/kWh; Smart Export Guarantee£0.15/kWh. - Self-consumption: homes ~35% (72% with a battery); businesses ~50% (78% with a battery).
- Indicative install cost: homes
£1,350/kWp, businesses£950/kWp, plus battery. - CO₂ factor
0.207 kg/kWhof grid electricity offset.