January 20, 2022

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How Many KW Per Solar Panel Can a Roof Generate?

3 min read

In recent years, green living has become more fashionable for many Americans. Homeowners across the US look for ways to make their lives more environmentally friendly. Some start recycling their used items; others buy greener appliances.

However, the biggest way to go green in the eyes of many is to invest in solar energy. As a result, many people still consider buying solar panels to be the hallmark of eco-friendly living.

If you get the ideal solar panels for your roof, they may eliminate your energy bill. To reach that goal, you must determine how many kW per solar panel your system generates.

If you’ve wondered about this question, check out our solar panel guide below! We’ll give you the information you need to determine if solar panels are best for you.

How Many kW per Solar Panel Does a System Produce?

Most people know that solar panels generate energy by absorbing sunlight. The question is, how do you measure the energy that these panels produce?

This energy amount depends on your panel location’s irradiance. A more technical measurement gauges this irradiance in kilowatt-hours per square meter per day, or kWh/m2/day.

However, you’ll likely see this referred to as Peak-Sun-Hours. You can use this metric to get an estimate of a solar panel system’s output each day in kWh.

You can get a general idea of your peak-sun-hours/day by looking at your state’s average. The US average is four peak-sun-hours; some states exceed this, while others have significantly less.

For example, North Carolina receives 4.25 peak-sunlight-hours each day. You can see for yourself how efficient a standard solar panel system would be here!

How Many Solar Panels to Generate 30 kWh/Day?

When talking about this, we’ll have to stick with averages. Let’s say you have a standard 25-panel solar installation that receives four peak-sun-hours daily.

Next, imagine your solar panel system has a rating of 300 watts. If you combine each of these factors, your system could produce 30kWh each day. In total, this amounts to a 7.5kW installation.

As we’ve mentioned already, the irradiance of your location could cause this to vary. However, if you meet these conditions, you could achieve 30kWh daily.

On average, the standard US household uses approximately 893 kWh per month. If your household fell within this average, you could eliminate your energy bill with a daily 30 kWh output.

Other Factors to Consider

Other factors could affect your solar panel kWh output. For example, in the previous section, we mentioned that a solar panel system could have a rating of 300 watts. Most solar panel systems have a rating that falls between 250 and 400 watts.

If you have a higher or lower rating, that could affect your solar panel kWh output. Likewise, the size of your solar panels could also play a role. Larger solar panels absorb more sunlight than smaller ones.

Find an Energy-Efficient System for Your Home!

By examining the factors we’ve explored, you can determine how many kW per solar panel a system needs to generate for your house. Once you find the best hookup, don’t hesitate! Install it and make your home more energy-efficient today.

We hope you enjoyed this article! If so, check out our other content today.

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