How Many Solar Panels Does A Family Need

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How many solar panels does a family need. If you live in a sunnier state less solar panels are needed to generate the electricity your home needs. The average american home needs 14 36 solar panels to power their home. A home that consumes 1 000 kwh per month will normally need between 20 and 30 solar panels. The exact number changes depending on the specifications of the chosen panel model as well as the sunshine available at the project site.

The number of panels you need for your house depends on factors like location and panel performance. In this scenario we would need 18 panels rated at 335 watts apiece to cover our energy needs. Take your system size and divide by the panel wattage to figure out how many solar panels you need in your system. How many hours of daily sunlight does your state receive.

More efficient solar panels means less solar panels are needed. A 5kw solar system which consists of 20 panels can produce an average of 7 000 kwh per year. Based on the example above if this household wants solar panels to cover just 70 of their home s electricity usage they d only need 6 solar panels 11 1 35 x 0 7. You will need a roof space of about 194 sq ft for a 3kw system.

A 10kw solar system which consists of 40 panels can produce an average of 14 000 kwh per year. If you only want your solar panels to subsidise part of your home s electricity usage you can install a smaller number of solar panels.