How can I get the most from my solar panels in winter?

Getting the most from solar in winter

If you’re considering a solar panel installation, you may wonder how much energy they will generate during the winter. After all, in the UK many areas only get 7-8 hours of sunlight per day from November to January. While this can present a challenge, there are ways to maximise the efficiency of your system during shorter daylight hours. Here, we discuss how to continue enjoying the benefits of solar panels in winter.

What are the challenges to solar energy in winter?

There are some key challenges you face with using solar panels in winter. Reduced sunlight hours mean there are fewer hours in which the panels can capture the sun’s energy. The sun is also at a low angle, meaning its light has to travel through more of the atmosphere before reaching your panels. As such, it is scattered and absorbed, meaning less can be used by your system.

Snowfall and low temperatures can also impact performance. Snow can cover the panels, stopping them from absorbing sunlight, and extremely cold temperature can decrease the system’s efficacy. The increased demand for electricity and heat during winter can also put a strain on your system.

How much power will my solar panels generate in winter?

This depends on several factors, such as the direction your roof (and therefore your system) faces, the tilt of your roof and whether there are any trees or structures shading any of your panels. In the depths of winter, you may only get one hour of full output per day, so a 136W panel will only produce 136Wh of energy per day. That’s assuming the system is mounted on a south-facing roof at the optimum angle and is unshaded.

How can I maximise solar panel efficiency in winter?

There are several ways to get the most from your solar panel system in winter.

Maintenance – Regular solar PV maintenance is essential to optimum efficiency during winter. Keep your panels clean and free of snow, bird droppings, leaves and other debris.

Tilt and orientation – Your solar panel installers should ensure that your system is set up at the optimum angle for year-round efficiency. Ideally your roof will be south-facing to enable your panels to capture the most sunlight.

Monitoring energy consumption – Being aware of your energy usage during winter can help you maximise the power produced by your solar PV system. Simple adjustments such as using energy-efficient lighting and limiting use of appliances with a high energy consumption will collectively make a significant difference.

Invest in a battery – A battery storage system can store excess energy generated on sunny days and keep it ready for overcast days or night-time.

If you’re considering Kent solar PV installation, or need further advice on how to ensure your solar panels remain efficient during winter, contact South East Solar & Electrical today. Our solar PV experts work across the southeast of England to bring sustainable energy to homes and businesses.