When South East homeowners think about investing in solar panels, one of the most common questions we hear at SolarTherm UK is
“Do solar panels work on cloudy days?”
The short answer is yes – absolutely. Even when the British weather isn’t at its best, your solar panels are still working hard to generate electricity from daylight.
How Solar Panels Generate Power in Cloudy Conditions
Solar panels don’t need direct sunlight, they need daylight. Modern solar PV systems capture both direct and diffused sunlight, meaning they are still generating electricity even when the sun is behind the clouds.
While energy output is lower compared to a bight sunny day, high quality solar panels, like the Bovill.tech solar panels we use at SolarTherm UK, can still produce 60-80% of their usual output under light cloud.
Real World Performance in Essex, Kent and Surrey
Our customers across Chelmsford, Maidstone and Brighton and surrounding areas are often surprised at just how consistent their solar systems are, even during autumn and winter.
Here’s what you can expect:
- Overcast days: panels still generate a steady flow of electricity as they capture diffused and direct sunlight.
- Rainy weather: rain can help keep panels clean, washing away dust that could block sunlight.
- Short winter days: even limited daylight hours can make a difference, especially when paired with solar batteries to store excess energy.
Maximise Cloudy Day Efficiency with Solar Batteries
Add solar battery storage to your solar PV system allows you to store surplus energy your solar panels generate, letting you self-consume more of your free electricity. By storing your extra electricity in a solar battery, electricity generated during daylight hours can be used in the evenings or during low generation periods, making your home more self-sufficient and reducing your reliance on expensive grid electricity – ideal for year round savings.
Why Choose SolarTherm UK?
At SolarTherm UK we’ve been helping homeowners across Essex, Kent and Surrey make the switch to clean, renewable energy for over 15 years. Our MCS certified installers are experienced with all styles of homes, solar PV systems and set ups. Your solar system is designed bespoke for your property and lifestyle, ensuring your get the best performance whatever the weather.
Power Your Home Come Rain or Shine
Don’t let the British weather put you off going solar and making a difference to your energy bills. Whether it’s a bright sunny day in Essex, a cloudy afternoon in Kent or a misty morning in Surrey, your solar panels will still be generating clean, renewable, free electricity.
Contact SolarTherm UK today for a free, no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice.
Your home. Your energy. Your future.





