If you’re thinking about installing solar panels in Suffolk, a common question we get asked is “Do solar panels still work in winter?”

With shorter days and colder temperatures, it’s natural to wonder how much energy you’ll actually generate. Here’s how solar panels perform in winter, what impact snow and cloud cover can have and how to get the best results in the winter months.

So, Do Solar Panels Work in Winter?

In simple terms yes, solar panels do continue to work throughout winter.

Solar panels produce electricity from light, not heat, so cold weather doesn’t prevent them from working. In fact, solar panels can work more efficiently in the cooler temperatures. Winter output is mainly reduced due to the lower daylight hours and the sun sitting lower in the sky. Cloudier days are more common throughout winter too, which can lower generation.

How Much Does Winter Affect Solar Output?

In winter, solar panels naturally generate less electricity because:

• Days are shorter
• Sunlight is weaker due to lower sun angles
• Cloud cover is more frequent

For example, a typical 3.5kW system may produce around 362kWh per month in summer, but closer to 52kWh per month in winter. Even with reduced output, solar can still offset your electricity bills, especially if your home uses electric heating.

Tip: Pairing solar panels with battery storage helps you use more of your own free electricity, day or night. In winter, a solar battery can also be topped up using cheaper off-peak tariffs to further reduce your bills.

Do Solar Panels Work in Snow?

Solar panels do work in snowy conditions, but generation will depend on how much snow settles on the surface of your solar panels. Light snow, which Suffolk typically gets, melts quickly and rarely causes issues. Heavier snow can block sunlight temporarily and reduce output but is uncommon in Suffolk. Once the snow melts, it can even clean away the panels of dirt and dust, improving performance.

Best Time of Year for Solar Energy

The most productive months for solar are May to July, with longer days and less rainfall. November through to January sees solar production at it’s lowest with fewer daylight hours and more overcast days. Despite this, even in winter, your solar panels will continue to work hard generating free electricity to be used in your home, helping lower electricity bills and reduce reliance on expensive grid electricity.

How to Improve Solar Performance in Winter

• Clear heavy snow if possible to avoid blocking sunlight getting through
• Use high energy appliances during the day while your electricity is being generated
• Add battery storage to store surplus electricity for use in the evenings

Start Your Solar Journey

Even with the natural seasonal dip in energy production, solar panels remain an excellent long term investment for Suffolk homeowners. With rising electricity prices, there’s never been a better time to move towards renewable energy.

If you’d like a free, bespoke solar design and quote tailored for your home and energy use, get in touch today.

Solar on your roof. Power in your hands.