Average cost of solar panels in the UK
For a typical UK home, solar panel systems generally cost several thousand pounds. According to estimates from the Energy Saving Trust, an average 3.5kWp solar panel system costs around £7,000 to install. The cost varies greatly depending on multiple factors.
For businesses, costs are generally higher due to the need for larger systems, higher energy demands and more complex installations. That being said, larger systems can also deliver greater long-term savings.
What affects the cost of solar panels?
There are no fixed prices for solar panels. The overall cost can vary based on a combination of factors, including:
System size
Larger systems with more panels generate more electricity but cost more to install. The right size depends on your energy usage and available roof space.
Type and quality of panels
Different panels vary in efficiency, durability, and price. Higher-quality panels may cost more upfront but often deliver better performance over time.
Inverters and battery storage
An inverter is required to convert generated electricity into usable power. Some systems also include battery storage, which allows you to store excess energy for later use. Batteries increase upfront costs but can improve long-term efficiency.
Roof type and access
The shape, height, and material of your roof can affect installation complexity. Scaffolding, access requirements, and electrical work all influence the final price.
Installation complexity
Each property is different. Electrical upgrades, monitoring systems, or bespoke mounting solutions can all add to the cost.
Location
Labour costs and installation availability can vary depending on where you are in the UK.
Other costs
Some installations may also include additional costs such as scaffolding, monitoring, and aftercare.
Why solar panel quotes can vary
You may notice significant differences between quotes from different installers. Some lower-priced quotes may not include essential elements such as scaffolding, aftercare, monitoring, or warranties. Always check what’s included so you’re comparing like for like.
Are solar panels worth the cost?
For many homes and businesses, solar panels can offer long-term savings on energy bills. If your system is certified, you may also be able to earn money by exporting surplus electricity through the Smart Export Guarantee. Over time, these benefits can help improve the overall value of your installation.
Why comparing installers matters
Choosing the right installer is just as important as choosing the right system. Certified installers can help ensure your system meets quality standards, performs as expected, and qualifies for schemes such as the Smart Export Guarantee.
If you’re considering solar panels and want a clearer picture of costs and options, comparing certified installers is a sensible next step.