Solar PV panels use sunlight to generate electricity. When sunlight hits the panels, it knocks electrons loose from the atoms in the panel, which generates a flow of electricity. This electricity can then be used to power homes and businesses.

The cost of solar PV panels varies depending on factors such as the size of the system, the type of panels used, and the location. On average, the cost of a solar PV system ranges from £1.00 to £1.50 per watt. For a typical residential system, this can translate to a total cost of around £6,000 to £11,000.

In many cases, solar PV panels are a good investment. They can save homeowners money on their electricity bills, increase the value of their home, and help the environment by reducing greenhouse gas emissions. It's important to do your own research and consider factors such as your energy usage, the location of your home, and available incentives when deciding whether solar PV is right for you.

Solar PV panels are designed to last for many years. Most panels come with a warranty of 20 to 25 years, and it is not uncommon for them to last even longer. In fact, some panels have been known to last for more than 40 years.

Solar PV panels can still generate electricity on cloudy days, although they may not be as efficient as on sunny days. The amount of electricity produced by a solar PV system depends on the intensity of the sunlight, so on cloudy days the system may produce less electricity. However, most solar PV systems are connected to the grid, so they can draw power from the grid when needed.