| Collector Area (m2): 80.71 | Pay−back Time (yrs):6 | Initial Cost of Investment: 1,254,399.92 | |||||
| Year | Fuel Savings | Extra Mortgage Payment | Extra Insurance, Maintenance, Energy | Extra Property Tax | Income Tax | Solar Savings | Present Worth of Solar Saving |
| 0 | −125,440 | −125,439.99 | |||||
| 1 | 53,064.45 | −170,457.15 | −125,439.99 | 0 | 0 | −242,833 | −224,845.08 |
| 2 | 499,970.12 | −170,457.15 | −146,137.59 | 0 | 0 | 183,375.4 | 157,214.84 |
| 3 | 599,964.15 | −170,457.15 | −170,250.29 | 0 | 0 | 259,256.7 | 205,806.33 |
| 4 | 719,956.98 | −170,457.15 | −198,341.59 | 0 | 0 | 351,158.2 | 258,111.79 |
| 5 | 863,948.37 | −170,457.15 | −231,067.95 | 0 | 0 | 462,423.3 | 314,717.51 |
| 6 | 1,036,738.05 | −170,457.15 | −269,194.17 | 0 | 0 | 597,086.7 | 376,265.93 |
| 7 | 1,244,085.66 | −170,457.15 | −313,611.2 | 0 | 0 | 760,017.3 | 443,462.8 |
| 8 | 1,492,902.79 | −170,457.15 | −365,357.05 | 0 | 0 | 957,088.6 | 517,085.18 |
| 9 | 1,791,483.35 | −170,457.15 | −425,640.97 | 0 | 0 | 1,195,385 | 597,990.23 |