Solar

How Many Solar Panels Do I Need To Power My Home?

While the amount of solar panels to put on your roof seems straightforward, it can vary depending on many unique energy factors.

How many solar panels do you need to power your home? It seems like a straightforward answer, but it can change depending on your unique energy-use.

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It’s Individual

The more energy you use, the more solar panels you need. The more conservative you are in energy use, the less you’ll need

To a certain extent, energy depends on the size of a home, but energy use is greatly influenced by the number of occupants, appliances, time spent at home, and more. From how much you open the fridge to how you run your heater/ac all year, these small choices make up your unique energy bill.

It Depends On Your Home

Let’s say you’re identical to your neighbor in energy consumption, but your roof is pitched different and it (or another valid area of your home) gets more peak hours of sunlight. In this case, you may need less solar panels to cover your energy need than your neighbor does.

Or vice versa.

The Average

An average 2,000 sq. foot home would have around a 4,000 watts system. Depending on the solar panel you purchase, that’s around 12-18 solar panels.

To run your own calculations, you’ll want your energy bills in front of you and some of these equations.

Multiply your home’s hourly energy use by the amount of peak sunlight hours for your location. Then divide that by the solar panel’s wattage (low wattage panels average 150W and high wattage averages 370W).

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The average U.S. home uses about 900 kWh a month (in areas with at least 5 peak sunlight hours a day). This amount of energy use would need a 6,250 watts solar panel system.

Keep in mind that it’s usually a good idea to plan for an additional 25% of your energy use for “padding.” That padding will help you collect and sell back the excess energy for cloudy days when your solar panels produce less energy.

What Your Pro Can Help You With

A solar professional can tell you over the phone approximately how many solar panels you’d need based on your energy use. Of course, other factors can change that number, which is why at-home consultations are performed before any official quote is given.

At-home solar consultations allows your solar pro to get you the best quote on the location, size, and number of solar panels you would need for your specific home and energy needs.

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Frequently Asked Questions about Solar:

Q: What is the ITC?

A: The Federal Government in the year 2019 will pay for 30% of your solar cost. That's like the Federal Government paying 30% of your electric bill for the next 30 years.

Q: Is there a solar program that is 100% free?

A: No. There are programs without any enrollment, install, or maintenance costs. However, you still have to pay the lower power bill that comes accompanied with your electricity use.

Q: What energy efficient program offers the most savings?

A: Solar offers massive savings to the homeowner. Especially as electric rates tend to rise year after year, and homeowners are using more power as they are adding in home automation, tvs, speakers, etc.

Scale of Solar Prices Over Time


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