FAQs

Do solar panels work in the UK’s cloudy weather?

Yes, solar panels generate electricity even on cloudy days, as they rely on daylight rather than direct sunlight. While efficiency is lower compared to bright, sunny conditions, modern panels are designed to work well in the UK’s climate.

How much do solar panels cost for a typical home?

The cost varies depending on system size and specifications, but a typical 3-4 kWp system for a UK home costs between £5,000 and £8,000. Battery storage adds extra costs but increases energy savings.

How much can I save on my electricity bills?

Savings depend on your energy usage and system size. A typical household can save between £200 and £500 per year, and even more with battery storage or by selling excess electricity through the Smart Export Guarantee (SEG).

Do I need planning permission to install solar panels?

In most small domestic installations, no — solar panels are classed as permitted development in the UK. However, if you live in a listed building, conservation area, or a flat, you may need to seek permission from your local council. On bigger installations permission may be required from your distribution network operator (DNO).

How long do solar panels last?

Solar panels typically last 25 to 30 years, with most manufacturers offering warranties of 20–25 years. The inverter, which converts solar energy into usable electricity, may need replacing after 10–15 years.

Can I store excess electricity for later use?

Yes, you can install a solar battery to store excess electricity, allowing you to use it when the sun isn’t shining. This increases self-sufficiency and reduces reliance on the grid, but batteries come at an additional cost.

How long does installation take?

A standard domestic solar PV system is usually installed within 1-2 days, though larger systems or those requiring structural work may take longer.

What maintenance do solar panels require?

Solar panels require minimal maintenance, as they have no moving parts. Occasional cleaning (once or twice a year) and an annual check-up by a professional will help ensure they operate efficiently.