Do solar panels still work when it’s cloudy?

20th Jun 2025
Cloudy weather

As we transition into the summer months, longer and brighter days present an ideal opportunity to maximise the benefits of solar energy.

However, whilst summer is typically associated with sunnier skies, we all know it can also bring its fair share of overcast and unsettled weather—especially here in the UK.

Understandably, this raises a common question: Do solar panels still work when it’s cloudy?

The short answer is yes. Modern solar systems are designed to perform efficiently in a wide range of light conditions, meaning your investment continues to deliver value even when the sun isn’t shining directly.

Solar Power, Even Without the Sun

Solar panels don’t need direct sunlight to generate electricity — they rely on daylight instead. That means even on overcast days, your system is still actively working, converting light into clean, renewable power for your home or business.

So whether it’s blue skies or a moody grey day, your solar panels are busy behind the scenes, doing what they do best: producing energy and reducing costs.

How to Optimise For Best Energy Use

Although your solar system will continue to work on cloudy days, there are some simple strategies to get even more out of your system, whether the sun is shining or not!

Regular servicing helps to prevent unexpected faults, extend the lifespan of your equipment, and protect the return on your investment. Whether it’s removing dirt and debris from your panels or running performance assessments to check all systems are operating efficiently, these routine checks can make a significant difference in how much clean energy your system produces.

Maintain to Extend

We offer a range of maintenance services designed to keep your solar PV system operating at peak performance. Our expert technicians cover all core components, including solar panels, inverters, batteries, immersion heaters, and electric vehicle chargers. We are equipped to provide in-depth support, performance evaluations, system checks, and firmware updates where required.

Our team also offers completely customisable maintenance plans, tailored to the specific needs of your system and lifestyle. Whether you require frequent checks or just annual maintenance, we’re here to make maintenance simple and stress-free—so you can enjoy your summer!

Your Local Solar Experts

Whether summer brings clear skies or cloudy, rainy days, your solar system is ready to perform. With the right care and expert support, you can maximise efficiency, lower your bills, and enjoy peace of mind all season long.

We’re here to make solar simple, efficient and built to last—rain or shine.

Get in touch today to schedule your maintenance or speak to our team about upgrading your system for optimal summer performance.

Yet to make the switch? Browse our products here.

Get in touch today

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Reaching out to Sheerwater Solar is straightforward and hassle-free. Whether you’re interested in solar panels for your home or business in Woking, we’re here to guide you every step of the way. You can contact us directly by calling 01932 627 555 or by sending an email to info@sheerwatersolar.co.uk.

Alternatively, fill in our online form for a swift response.

What happens next?

In most cases, we’ll need to conduct an on-site survey at your property to assess the feasibility and provide you with a tailored quote. This visit allows us to understand your specific needs and explore the potential for renewable energy solutions. Following the survey, we’ll discuss the best options for integrating solar energy into your property, including detailed costs and the installation process.

We’re excited to assist you on your journey to renewable energy and look forward to hearing from you.