The Truth About Solar Energy Production in Overcast Weather

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Solar power is a fantastic source of clean energy. It has become increasingly popular as people have become more environmentally conscious and are looking for ways to reduce their carbon footprint. However, one question often arises is whether solar panels work on cloudy days. In this article, we will discuss the truth about solar energy production on overcast days and debunk some myths surrounding it.

Solar Panels On Cloudy Days

It's a common misconception that solar panels won't work on cloudy days. After all, solar panels need direct sunlight to function correctly. However, solar panels can still produce electricity on cloudy days, even with the most indirect sunlight. Solar panels are designed to take advantage of even the tiniest speck of the sun that hits them, including on cloudy days when there isn't much sunlight reaching them.

Efficiency Of Solar Panels On Cloudy Days

While solar panels won't be as effective on cloudy days as on days with plenty of sunlight, they still perform surprisingly well. The Environmental and Energy Study Institute has calculated that solar cells can still give 80% of their maximum output potential even on days with few clouds or overcast weather. Many homeowners in cloudy areas, such as Portland, San Francisco, Seattle, and Boston, have adopted solar panels to reduce their dependence on fossil fuels and lower their electric bills.

Solar Panels Producing Insufficient Electricity

When installing solar panels, planning for every possibility is essential. The weather is unpredictable, so you need to have a solar power system design that focuses on your electricity needs rather than worrying about the inefficiency of the solar panels. Your solar panels might not meet your home's electricity needs on cloudy days, so it's crucial to plan for this possibility.


Factors to consider when buying solar panels include net metering, battery storage, future electricity requirements, present electricity consumption, roof orientation and shape, peak sun hours, weather, and geography. Considering these factors, you can create the most suitable solar power system for your home.

Frequent Days Of Bad Weather

If you live in an area with frequent bad weather, there will be times when your solar panels won't generate much electricity for days. Overcast weather can cover a large region during an extensive storm system, resulting in low electricity production. However, you still have two options to get electricity on days with bad weather: the grid and battery storage.


The grid supplies electricity to homes without solar panels, and you can rely on it when your panels won't generate enough electricity. Battery storage is another option. On days of excess electricity generation, your home will divert that extra power to a solar battery. This extra power can be used on days with bad weather.

Final Thoughts

In conclusion, solar panels work on cloudy days and are still a great source of clean energy, even on overcast days. It's important to plan for every possibility when installing solar panels, including the possibility that they might not meet your home's electricity needs on cloudy days. By considering factors such as net metering, battery storage, future electricity requirements, present electricity consumption, roof orientation and shape, peak sun hours, weather, and geography, you can create the most suitable solar power system for your home.


So don't be scared by cloud cover; if you want to go completely solar, this shouldn't affect you. Just remember that production will be low on cloudy days, but you can increase it by contacting an experienced solar company that specializes in designing solar power systems capable of maximizing the amount of electricity your home can create from the available sunlight.

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