Solar panels are one of the most cost-effective home improvements in the UK — with typical systems costing £6,000–£8,000 and a payback period of around 8 years. A medium-sized solar setup can save £700–£1,400 per year, depending on your location, energy use, and roof orientation. Whether you're looking to save on electricity bills, generate your own energy, reduce your carbon footprint, or all of the above, there's a lot to consider when getting solar panels installed. Most people break even in 6 to 12 years.