How Does Winter Affect Solar Panels in Sheffield?


Snowfall is a common occurrence during the winter season in the UK. While it may not be the most favourable time to manage solar panels, it presents an opportunity for winter sports enthusiasts to engage in activities such as hockey. 

If you plan to install solar panels in Sheffield, you may be interested in their effectiveness during winter. So, how well do solar panels perform during this season?

How Winter Affects Solar Panels

Solar panels can produce electricity even in winter when sunlight is scarce and snow covers the ground. 

However, snow accumulation on solar panels could improve their efficiency at capturing solar energy. 

Studies indicate that snow can cause an annual solar energy generation loss depending on the type of panel you have. Snow reduces monofacial panel efficiency by 33% in winter and 16% annually. Bifacial panels do better, losing 16% in winter and 2% annually in tough conditions.

Beyond limiting sunlight access, the weight of accumulated snow can damage the panels. 

Heavy snowfall can strain the entire solar structure. Even though most solar panels can withstand 112 pounds per square inch (or 5400 pounds per square foot) of snow, uneven snow distribution can cause microcracks. 

Interestingly, solar panels often function more effectively in colder temperatures. The PV (photovoltaic) technology in panels converts sunlight to power. With snow’s reflective properties, panels can harness more sunlight, producing more energy.

Furthermore, the operational temperatures of solar panels are warmer than ambient air. Even if snow partially covers the boards, penetrating sunlight can initiate melting. 

As sunlight interacts with the silicon, electrons become active. These electrons flow, creating electricity, which then powers household appliances. Excess energy is stored in solar batteries for later use.

Like most electronics, solar panels operate best in cold conditions. Research suggests that 25 degrees Celsius (77 Fahrenheit) is the optimal temperature for solar panels. 

Their efficiency drops as temperatures exceed this mark. Hence, winter can benefit solar panels, as they remain cooler and perform without overheating.

Expert-Recommended Practices to Protect Your Solar Panels from Snow

Before diving into the best practices for solar panel maintenance during snowy conditions, ensure that any actions taken won’t invalidate your warranty. 

Always read your agreements closely, especially before tackling snow removal yourself. 

Here are four effective measures to safeguard your solar panels from snow:

  • Cleaning

Keep your solar panels free from debris. Regularly inspect for potential damage like cracks or holes, ensuring they’re fixed promptly to prevent water intrusion. 

While a soft brush is handy for snow removal from the panels, prioritise safety. Do not clear snow from rooftop panels over six meters high in severe winters. Always exercise caution to prevent any harm to yourself or the panels.

  • Utilise the Natural Heat

The energy conversion process in solar panels produces heat, which can assist in melting accumulated snow. 

As it melts, snow can naturally clear away dirt and debris. If the snow will not melt or slide off, use heaters or snow-melting devices.

  • Optimal Positioning

Solar panels achieve their best efficiency with at least eight hours of direct sunlight. 

If there’s limited southern exposure, installing additional panels on your roof’s east or west sides can compensate. 

Plus, effectively angling panels during installation promotes snow sliding and maximises sunlight absorption. 

For standalone systems, if space permits, ground-mounting is ideal. It makes snow removal easier and lets you tilt solar panels for optimal performance. 

  • Use Snow Guards and Transparent Covers

While the natural melting of snow can clear debris, sudden water accumulation might pose risks to both your home and the solar panels. 

Transparent covers can protect solar panels from direct snow accumulation while allowing sunlight penetration. 

Additionally, snow guards can be invaluable in reducing roof snow accumulation and the risk of hazardous roof collapses.

Final Assessment 

As a recap, solar panels are still efficient even in the winter. They continue to produce power even when partially covered in snow. 

The most crucial factor in determining the amount of energy your solar panel generates annually is the amount of sunlight it receives. 

But if snow covers them entirely, their electricity output will decrease. 

To maintain peak performance, having your panels regularly inspected and serviced by a professional is essential.

Investing in a reliable solar system and accessories can prepare you for the harsh winter months.

ECOfootprint Limited has been a top solar panel installation company since 2013. 

We have experts who will take care of every detail of your solar installation and provide answers to any questions you may have throughout the process. 

Our solar panels generate immaculate energy, and we offer installation services in all areas of Sheffield. 

Book an inspection today to discover how effortless and beneficial going solar can be, regardless of the time of year.


How do the reflective properties of snow benefit solar panel efficiency in winter?

The reflective qualities of snow can assist solar panels in capturing additional sunlight, resulting in heightened energy output.

What precautions should homeowners in Sheffield take to protect their solar panels from heavy snowfall?

Homeowners should inspect solar panels for damage, avoid manually removing snow from high rooftops, and consider using snow guards or transparent covers for protection.

Why is 25 degrees Celsius considered the optimal temperature for solar panels?

Manufacturing standards recommend 25°C for photovoltaic solar panels. In this range, the solar cells can absorb sunlight most efficiently. However, if the temperature goes beyond this range, the solar cells will become less efficient.

Why is it essential to ensure actions taken for solar panel maintenance during snowy conditions don’t invalidate the warranty?

It’s crucial to ensure that any maintenance actions align with the warranty terms to avoid unintentional voiding of the warranty, which could lead to additional costs or loss of coverage.

What role does the energy conversion process in solar panels play in snow melting?

The energy conversion process in solar panels produces heat, which can assist in melting accumulated snow, naturally clearing away dirt and debris.


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