One of the most frequent questions we receive is: Do solar panels require maintenance? The short answer is — very little. Solar panels are designed to be self-cleaning in the UK’s climate thanks to regular rainfall, and they have no moving parts, which significantly reduces the chance of mechanical failure. That said, as an experienced solar PV installer, Masper recommends a visual inspection and system performance check once a year, which we offer as part of our post-installation comprehensive services.
Our maintenance packages include checking inverter health, battery performance, panel cleanliness, and connection points. For larger commercial systems, we also provide remote monitoring solutions, helping facility managers quickly identify issues and reduce downtime. These preventative steps help maximise your system’s performance and lifespan — two factors that are crucial in protecting your investment.
So, how long do solar panels last? With proper installation and minimal maintenance, most panels can last between 25–30 years or more. In fact, the degradation rate of modern panels is very low — typically around 0.5% per year — meaning your panels could still be producing over 85% of their original output after 25 years. That’s why selecting a professional solar PV installer like Masper is so important. Poor-quality installation can shorten panel lifespan, increase inefficiencies, and void manufacturer warranties. With us, you’re backed by years of expertise and a team that includes qualified electricians, structural assessors, and MCS installers.