How Many Solar Panels Do You Need to Power Your Home?

How Many Solar Panels Do You Need to Power Your Home? This is, without question, the question we hear most often — and for good reason. Nobody wants to overspend on panels they don't need, or worse, underspend and end up with a system that can't carry the home through the evening. Step 1: Know your daily energy usage. Check your appliances' wattage and estimate how many hours a day each one runs. A fridge running 24 hours at 150W uses 3.6kWh a day. Add up every appliance — fans, TV, lights, chargers — to get your total daily kilowatt-hour (kWh) usage. Step 2: Know your sunlight hours. Most parts of Nigeria receive an average of 4–6 peak sunlight hours a day, though this varies by season and region. This number tells you how many effective hours your panels will produce close to their rated wattage. Step 3: Do the calculation. Divide your daily energy usage by your peak sunlight hours to estimate the solar array size you need. For example, a home using 5kWh a day with 5 peak sunlight hours needs roughly 1,000W (1kW) of panels — before accounting for system losses like inverter inefficiency, battery charging losses, and dust, which typically reduce real output by 15–25%. Step 4: Build in a buffer. Cloudy days happen. A well-sized system should comfortably cover your needs even when sunlight is below average — which usually means adding 20–30% more capacity than the bare-minimum calculation suggests. A quick example: A typical Nigerian household running a fridge, a few fans, lights, a TV, and phone chargers often needs somewhere between 1.5kW and 3kW of solar panels, paired with an appropriately sized battery bank and inverter — but every home is different. Rather than guessing, send us your appliance list and typical usage hours, and our team will run the numbers and recommend a panel setup sized specifically for your home.