Estimated savings using a solar rooftop systems
Installation of a solar rooftop plant can yield significnt savings in your electricity bill. At firstgreen we have developed a solar calculator through which you can do the savings calculations for your solar rooftop system over period of a 25 years life. There are few factors which affect your savings. These factors include the electricity tariff, financial incentive and the financing interest rates.
Following example shows the estimated savings from a 100-1000 KW solar rooftop plant.
| NO. | SOLAR PV SYSTEM SIZE (kWp) | 25-YEAR PROJECTED CLIENT TOTAL ENERGY CONSUMPTION (kWh) | 25-YEAR TOTAL KPLC ENERGY COST (Kshs) | REMNANT 25-YEAR KPLC ENERGY CONSUMPTION AFTER SOLAR INSTALLATION (kWh) | REMNANT 25-YEAR KPLC ENERGY COST AFTER SOLAR INSTALLATION (Kshs) | TYPICAL CLIENT ANNUAL ENERGY CONSUMPTION (kWh) | TYPICAL CLIENT MONTHLY ENERGY CONSUMPTION (kWh) | TYPICAL CLIENT MONTHLY ENERGY BILL (Kshs) | 25-YEAR ENERGY YIELD BY SOLAR PV SYSTEM (kWh) | 25-YEAR KPLC COST (Kshs.) @17.50/kWh | 25-YEAR SOLAR PV ENERGY COST (Kshs.) | 25-YEAR SAVINGS (Kshs.) | LEVELLIZED COST OF ENERGY (LCOE) in Kshs/kWh | SAVINGS |
| 1 | 100 | 7000000 | 122500000 | 5303101 | 79546508 | 280000 | 30000 | 690000 | 1696899 | 29695741 | 16484837 | 13210904 | 14 | 22% |
| 2 | 200 | 14000000 | 245000000 | 10606201 | 159093015 | 560000 | 60000 | 1380000 | 3393799 | 59391482 | 32969674 | 26421809 | 14 | 22% |
| 3 | 300 | 21000000 | 367500000 | 15909302 | 238639523 | 840000 | 90000 | 2070000 | 5090698 | 89087224 | 49454510 | 39632713 | 14 | 22% |
| 4 | 400 | 28000000 | 490000000 | 21212402 | 318186030 | 1120000 | 120000 | 2760000 | 6787598 | 118782965 | 65939347 | 52843618 | 14 | 22% |
| 5 | 500 | 35000000 | 612500000 | 26515503 | 397732538 | 1400000 | 150000 | 3450000 | 8484497 | 148478706 | 82424184 | 66054522 | 14 | 22% |
| 6 | 600 | 42000000 | 609000000 | 31818603 | 461369744 | 1680000 | 180000 | 4140000 | 10181397 | 178174447 | 98909021 | 79265427 | 13 | 24% |
| 7 | 700 | 49000000 | 710500000 | 37121704 | 538264701 | 1960000 | 210000 | 4830000 | 11878296 | 207870188 | 115393857 | 92476331 | 13 | 24% |
| 8 | 800 | 56000000 | 812000000 | 42424804 | 615159658 | 2240000 | 240000 | 5520000 | 13575196 | 237565929 | 131878694 | 105687235 | 13 | 24% |
| 9 | 900 | 63000000 | 913500000 | 47727905 | 692054616 | 2520000 | 270000 | 6210000 | 15272095 | 267261671 | 148363531 | 118898140 | 13 | 24% |
| 10 | 1,000 | 70000000 | 1015000000 | 53031005 | 768949573 | 2800000 | 300000 | 6900000 | 16968995 | 296957412 | 164848368 | 132109044 | 13 | 24% |