If you’re unfamiliar with solar panels, they are also commonly referred to as photovoltaic systems (PV systems). Using semiconductor technology, they convert energy from sunlight into electricity that can power your household or business. The number of solar panels in use in the UK is increasing year after year and research suggests that on average, more than 4,000 solar panels are installed in the UK each month. If you’re considering solar power but are worried about the cost then you might be surprised to learn that thanks to the latest advances in solar panel technology, the cost has decreased by as much as 82% in the last decade.