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If you live in Fresno, Clovis, Visalia, Madera, Tulare, Sanger, Selma, Hanford or the surrounding Central California area you may have noticed that a lot of homeowner are switching to solar. But how do you know what solar panel system size is right for you?

Determining how many solar panels you’ll need for your home means first knowing what your goals are. Do you want to minimize your carbon footprint? Maximize your return on your investment? Save as much money as possible? Most people want to save money while maximizing their energy production.

To calculate how many solar panels you need, you need to know the following: how much energy your household uses; your roof’s usable surface area; the climate and peak sunlight in your area; the wattage and relative efficiency of the solar panels you’re considering; and whether net metering is available.

One simple way of answering the “How many solar panels do I need” question is to consult a professional solar installer, who can give you a free home solar evaluation.

1. How much solar power will you need?