Peak Sun Hours in Nigeria, Explained Simply

"Peak sun hours" is a way of expressing a day's sunlight as the equivalent number of hours at full-strength sun. It is the key number for estimating how much solar panel wattage you need to recharge a battery.

Why it varies

Sunlight differs across Nigeria's regions and changes with the rainy and harmattan seasons. Cloud cover, dust, shading and panel angle all reduce real-world output.

Using it in your plan

Divide your daily energy need (Wh) by your peak sun hours to estimate panel watts, then add a margin for losses. Use a conservative figure for the season you care most about. For location-specific values, consult a recognised solar resource dataset or a qualified installer.

The Solar Calculator lets you adjust sun hours and losses so you can see how sensitive your result is.