Unlike typical solar panel systems, ground-mounted panels are, as the name suggests, mounted on the ground instead of on your roof. Although they're more commonly used for solar farms, they can also be used. The UK's average solar panel system cost is £7,026 for a three-bedroom house, but ground-mounted solar panels would likely cost a little more. To give you an idea, an average system. The cost for a ground-mounted solar panel systemdepends on various factors like space, distance, height, and size of the system. But, to give you some ideas, here are some rough. Ground-mounted solar panels are installed on the ground instead of on a building's roof. They allow optimal placement to maximize sun exposure, resulting in higher energy productio. If a ground-mounted solar panel system is larger than nine square metres – the equivalent of four to five panels – it will require planning permission. For context, you would need.