Free tool

Solar System Calculator

Use a verified African reference point or enter local peak sun hours manually. Then select the appliances you need to run.

Choose a country. Listed African values are representative reference points, not national averages or site surveys.

Essential home: one refrigerator, four LED bulbs, one ceiling fan and a small TV. Refrigerator hours are an equivalent compressor-runtime assumption; replace all values with your own usage.

Choose appliances and daily use
300 W · 5× start
200 W · 5× start
1200 W · 5× start
1500 W · 5× start
12 W
60 W
75 W · 2× start
50 W · 2× start
125 W
1050 W · 1.5× start
1150 W · 5× start
900 W · 3× start
1500 W · 1.2× start
1200 W
35 W
100 W
750 W · 5× start
2200 W
2600 W

Last checked 22 August 2026 · data version 1.20260822 · Sources: NASA POWER representative-point irradiance, solar appliance table, solar parameters, solar product table · How we calculate this

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