| Heat required | 55,000 KWh/year |
| Electricity required | 13,000 KWh/year |
| Total energy required | 68,000 KWh/year |
| Nominal power of PV system | 8.7 KWp |
| Cost of PV system | 13,050 ?o:p> |
| Power of solid biomass boiler | 68.75 KWth |
| Cost of solid biomass boiler | 34,375 ?o:p> |
| Quantity of solid biomass required | 15.8 tons/year |
| Cost of required solid biomass | 1580 ?year |
| Total capital cost of R.E. systems | 47,425 ?o:p> |