Solar Panel Maintenance

Do panels need cleaning?

Rarely in the UK — rain does most of the work on a tilted roof. Panels in sheltered spots, under trees or with heavy bird activity may benefit from occasional professional cleaning.

The inverter

The inverter is the component most likely to need replacing during a system’s life. Check its warranty length carefully when comparing quotes — it varies a lot between brands.

Monitoring

Most modern systems come with an app showing generation. Checking it occasionally is the simplest way to spot a fault early — a sudden drop in output usually means something needs attention.

Warranties to check

• Panel product and performance warranty
• Inverter warranty
• Battery warranty (cycles or years)
• Installer workmanship warranty

Aftercare quality varies, so it is worth weighing when you compare quotes.

This article is general information. Costs and savings vary by property, energy use and tariff.