An average home needs 20 to 24 solar panels to fully offset utility bills with solar energy. The number of solar panels you need depends on a few key factors, including the geographical location and specifications of the individual panels. That's equivalent to about 20 to 25 solar panels to do the job. You can use this same formula to determine how many solar panels you'll need to power your home.
Or, you can use the easier route, which is to review your energy bill to determine what you'll need. From this calculation, you can estimate that a home with these energy requirements would need about 25 panels producing 320 W. The location of your home is not something that can change, but it's still important to recognize that your region plays a role in operating solar energy for you. You'll need to multiply the panel's power by the number of hours of sunshine you get every day to understand how much energy it will produce (more on that in the next section).
That's the amount of kilowatt-hours you need your solar system to produce if you want to cover most, if not all, of your electricity needs. If you have a small or unusually shaped roof, the size and numbers of the solar panels are important considerations. You can use SunPower Design Studio to estimate the size of your own system, monthly savings, and the actual appearance of a solar panel on your own roof. Solar panel power is also known as nominal power and is the electrical output of a panel under ideal conditions.
Individual solar panels are capable of producing a certain amount of energy, depending on the conditions of your home (including the amount of sunlight you receive and the amount of shade your roof covers). This, of course, is a general estimate and eclectic usage, hours of sunlight, location and type of panels can change this amount. Although the answer may be a bit complicated, if you hire a professional or a solar panel installation company to consult you, they will likely also handle this part of the process (and give you advice on how to maintain and clean solar panels). The peak hours of sunlight at your particular location will have a direct impact on the energy you can expect your home's solar system to produce.
The following tips will help you calculate how many solar panels you need and what factors will affect that number. These are times when you will need to reduce your energy consumption, so it is recommended to have approximately 25% more solar panels than you need. Contact a professional solar company and receive a quote to install your solar system in your home.
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