How long will my solar system last for?

Solar PV systems have no moving parts other than the inverter, and as such have very long life spans. The inverter should last for more than 10 years, and may cost £1,000 or less to replace, depending on the model required to support the panels installed. An extended, 10-year warranty is often offered by the installer prior to fitting or can be directly arranged with the inverter manufacturer upon completion of the installation if required. This extends the warranty from the standard 5 years up to 10 years in total. Panels should last more than 25 years with performance guarantees in place to ensure a satisfactory level of performance for at least the first 20 years in most cases.