Solar panels can still work on cloudy days, but their output will be much less compared to clear days. This is because some of the sun’s rays still pass through the clouds. So even though they work best in direct sunlight, they still generate power from indirect sunlight. This means that even on cloudy or rainy days, you can still expect your system to produce some electricity.
How Do Solar Panels Work?
Solar panels work by converting light particles (photons) into electricity. This process is called the photovoltaic (PV) effect, which is why solar panels are sometimes called PV modules. When photons strike the silicon cell of the panel, they knock electrons free from their atoms and generate an electrical flow. A solar energy system will continue to work as long as photons are present. This is why solar panels can produce some energy before the sun has risen and after the sun has set.
How Do Solar Panels Generate Power When It’s Cloudy
PV panels can generate electricity when the sun is hidden behind clouds. They do this by capturing diffuse sunlight, which is light that passes through the clouds and scatters in multiple directions. On a cloudy day, fewer particles of light will reach the panels. Because of this, the panels won’t produce as much electricity as they would on a clear, sunny day. However, they will still continue to work.
Factors That Influence Solar Efficiency on Cloudy Days
Not all cloudy days are equal, and several factors affect how much power solar panels can produce in overcast conditions.
- Solar Panel Quality: The type and quality of your panels play a role. For example, monocrystalline panels are better at capturing sunlight compared to others.
- Cloud Density: Thicker clouds will block more sunlight, causing your panels to produce less power
- Rain: Heavy rain will reduce solar panel efficiency even further. However, rain can clean rooftop panels and make them more efficient.
If you’re considering installing solar panels, contact Geraldton Solar Force. Our team will assess your property and find the best solar panel solution for you.
