How to Choose the Right Size of Solar Power System?

Solar backup systems come in a variety of sizes, from 1 kW and 2 kW solar systems to 8 kW or 10 kW solar systems and even 30 kW and 50 kW solar systems. Choosing the right size for your system ensures that your daily energy needs are covered in full while not incurring exorbitant maintenance costs. Here's how to make an informed decision:

1. Calculate Daily Energy Usage: Begin by examining your utility bills to determine your monthly energy consumption in kilowatt-hours (kWh). Collect data over several months for a more accurate average. Divide the total kWh by the number of days to obtain your daily energy usage. This figure is essential for sizing your solar system.

2. Identify Peak Sun Hours: Consider the peak sun hours in your location. These are the hours when your solar panels can absorb and convert sunlight into electricity. Peak sun hours vary depending on your geographical location and the time of year. Refer to the relevant information from the local government or weather report authorities.

3. Determine Solar Panel Efficiency: Solar panels come in various sizes and efficiencies, generating different wattages. You must account for these differences in your calculations. Start by converting your daily kWh usage into watts by multiplying it by 1,000.

4. Calculate System Size: Divide the watt-hours by your peak sun hours. This calculation will give you the total number of watts your solar system should generate daily. Divide this wattage by the wattage per panel to determine how many panels are needed to meet your daily energy needs.

For example: Suppose your house uses 30 kWh daily, and you aim to offset 50% of your energy consumption with your solar system. That means your solar system kit should generate 15 kWh of power each day. Now, if your location receives 5 hours of sunshine daily, you should have a 15 kWh/5 h=3 kW solar system at the minimum to cover your energy