Cloudy day

How Does Weather Affect Solar Panels?

So you are considering finally making the switch to solar power for your home or business, but you probably still have a few questions to ask before fully diving in. One of those questions might be about how the weather, specifically cloudy days, impacts your solar panel’s ability to generate electricity. We’re answering this question and a bit more throughout this blog post.

According to research done by the National Oceanic and Atmospheric Administration, Southern California is one of the sunniest regions in the United States. Because of all of the sun we get here, it is an optimal place to install solar panels and power your home with energy from the sun.

However, that doesn’t mean it’s sunny all the time here, so what happens on the days when the clouds move in and it seems like no sunlight is getting through? Are your solar panels completely out of commission?

Do Solar Panels Work When it’s Cloudy?

Even on a cloudy day, your solar panels will still function, just not as efficiently as on a sunny day. They typically work at 10 to 25 percent less capacity when the clouds are out. And because they’re not dependent on heat from the sun, just the rays, they will continue to operate even when it’s cold outside.

Luckily, Simi Valley gets about 277 days of sun every year, so the clouds are nothing to be concerned about.

How Does Rain and Tree Coverage Impact Solar?

Rain will actually help your solar panels to continue running efficiently by cleaning them periodically. As dirt and debris collect on the solar panels the energy generating efficiency decreases, so a quick rain will clean off all of the gunk and allow your panels to operate efficiently again.

Trees could potentially block the sunlight from your solar panels causing a dip in efficiency. So if you notice any branches hanging over your panels, you might want to trim them back or have them moved.

Do you have more questions about installing solar panels at your home? Contact our team today for more information either through our website or by calling us at (805) 519-8099!