Solar system calculator | Bright Life Solar and Gadgets Enterprise

Where will this be installed?

Why we ask: Sunlight is weaker on the coast than in the north. The same fridge in Lagos usually needs more panels than in Kano. We look up typical peak sun hours for your state so you do not have to.

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Peak sun hours are a simple average of useful sunlight in a day. They are not clock hours of daylight. We use them only to size panels.

What do you want to keep on?

Why we ask: Solar is sized from real use, not a round kVA number. Wattage is how hungry an appliance is. Hours are how long it runs. Quantity is how many you have. If you do not know the wattage, keep our default. It is a typical Nigerian rating.

Total so far: 0.00 kWh/day

This is the energy your listed items use in a day. Panels must collect at least this much, plus a safety margin.

Your daily energy, in plain language

What kWh means: A kilowatt-hour is a unit of energy, like a “fuel tank” for electricity. A 100W bulb on for 10 hours uses 1 kWh. Your total below is the fuel we must collect from the sun and, at night, draw from batteries.

When do you need the solar most?

You do not pick battery hours. Choose the lifestyle that fits. On the report we recommend how many batteries, how long they should last, and how many panels are needed to refill them.

Evenings at home Lights, fans, TV and the fridge when the grid goes off at night. Batteries sized for a typical evening outage. Panels sized to refill them the next day. Most of the house after dark A family home that still needs power for several hours after sunset. A standard home backup: lithium batteries for about 8 hours of your listed loads, plus enough panels to recharge. Shop or office hours Keep work equipment, lights and a fridge running through the business day. Daytime solar does more of the work. Batteries cover cloudy spells and early evening close-up. As much of the day and night as we can You want the system to stretch as far as practical on the loads you listed. A larger battery bank and more panels. This is still an estimate. A site visit confirms roof space.

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Ready for your recommendation

The next page tells you what to buy: panel count, battery pack, inverter size, and how long backup should last.