A Straightforward Guide for Homes in Somerset

If you live in Somerset and are thinking about having solar panels installed, one of the most common questions we hear is:

“Do solar panels actually work in winter?”

It’s a fair question. Winters in the UK are colder, darker and often cloudy, especially in areas like Wells, Glastonbury, Shepton Mallet, Street and surrounding villages. The short answer is yes, solar panels do work in winter, just not at the same level as in summer.

Below, we explain how winter affects solar panels and what you can realistically expect from a solar installation on your home.

Solar Panels Work on Light, Not Heat

A common misunderstanding is that solar panels need heat to work. In reality, solar panels generate electricity from daylight, not temperature.

As long as there is light reaching the panels, they will continue to produce electricity, even on cold or overcast days. This means your solar panels will still generate power throughout the winter months.

In fact, solar panels often perform slightly better in cooler temperatures than they do in extreme heat. The main factor that affects winter output is daylight hours, not the cold.

Why Solar Panels Produce Less Power in Winter

While solar panels do work in winter, it’s important to understand why electricity production is lower compared to summer.

Shorter Daylight Hours

In winter, the UK has significantly fewer hours of daylight. December and January can have almost half the daylight of summer months. Fewer daylight hours means less time for panels to generate electricity.

Lower Sun Position

During winter, the sun sits much lower in the sky. This reduces the strength of the sunlight reaching your panels, especially compared to the high summer sun.

Increased Cloud Cover

Winter months often bring more cloudy and grey days, which can reduce output. However, even on cloudy days, panels still generate electricity, just at a lower level.

Typically, UK solar panels produce around 20–30% of their summer output during winter, which is completely normal and already factored into professional solar system designs.

Can Cold Weather Improve Efficiency?

Surprisingly, yes. Modern solar panels are designed to work efficiently in cool conditions.

High temperatures can slightly reduce panel efficiency, which means bright but cold winter days can sometimes produce better output than expected. If it’s a clear, crisp day with good daylight, solar panels can perform very well, even in January.

What About Snow and Frost?

Snow and frost are rarely a major issue for solar panels in Somerset.

• Heavy snowfall is uncommon in this part of the UK
• Panels are installed at an angle, which helps snow slide off naturally
• A light layer of snow usually melts quickly once daylight appears

Snow does not damage solar panels, and once it clears, generation resumes immediately.

What Winter Solar Power Looks Like in Practice

For a typical Somerset home with solar panels:

• Panels will still generate electricity on cloudy winter days
• Output is lower than summer but still useful
• Bright winter days can deliver surprisingly good performance
• Using electricity during daylight hours helps maximise winter benefits

Even modest winter generation can reduce how much electricity you need to buy from the grid, which is particularly helpful during a season when energy use is usually higher.

Solar Panels Are a Year-Round Investment

Solar panels are not installed just for winter or summer; they are designed to work across the whole year.

Most electricity generation happens between spring and early autumn, when days are longer and sunlight is stronger. This higher output balances the lower winter generation, making solar panels a reliable long-term investment.

Many homeowners in Somerset also choose to add battery storage, allowing them to store daytime electricity and use it later in the evening or during darker periods.

How to Get the Best from Solar Panels in Winter

If you’re considering solar panels in Somerset, a few practical steps can help improve winter performance:

• Good panel positioning (south or south-west facing where possible)
• Keeping panels free from leaves or debris
• Using appliances during daylight hours when you can
• Considering battery storage for added flexibility

A professional solar installer will design your system with winter conditions in mind, so performance is realistic and balanced across the year.

So, Do Solar Panels Work in Winter?

Yes, they do.

Solar panels continue to generate electricity throughout winter in the UK. While production is lower than in summer, they still help reduce electricity bills, cut reliance on the grid and provide clean energy all year round.

For homeowners in Wells and across Somerset, solar panels remain a practical and dependable option, even in the colder months.

Local Solar Panel Installers in Somerset

Tincknell Solar installs solar panels and solar battery systems for homes across Somerset, including Wells and surrounding villages.

If you’re considering solar and would like clear, honest advice about how it will work for your home, our experienced team is here to help.

Contact Tincknell Solar today for a free, no-obligation solar quote.