Case Study
20 Panel System

195 Watt Solar panels
- Tax free Feed in tariff (FIT) at 21p / KWh.
- Based on initial electrical costs of 14p / unit.
- Based on a 8% yearly increase of electricity costs.
- Export based on 3p / unit.
- Maintenance costs included within calculations.
- Panel performance guarantee for 25 years.
All calculations have been based on SAP figures, manufacturers data indicates better performance than SAP figures. Therefore figures below can be taken as a conservative estimate.
| Installed cost |
£10,000 |
| Predicted generation (KWh / year) |
3433 |
| Year 1 profit / ROI |
£1,012 – ROI 12.08% |
| Year 5 profit / ROI |
£1,099 – ROI 14.27% |
| Year 10 profit / ROI |
£1,253 – ROI 17.75% |
| Year 15 profit / ROI |
£1,330 – ROI 20.11% |
| Year 20 profit / ROI |
£1,628 – ROI 25.66% |
| Year 25 profit / ROI |
£1,837 – ROI 29.91% |
| TOTAL PROFIT (after 25 years) |
£30,307 |
Click Here for Break down chart for this install
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