In October 2018, Spirit installed a PV solar system for Ridge Farm in Buckinghamshire. The system array consisted of 30 x JA Solar 275W panels mounted on a 15 degree pitched roof, orientated just 10 degrees off south. As there is no likely shading and a preferable orientation the system is expected to achieve an output in the region of 7,500kWh per year. The estimated annual savings and tariff income amounts to £1,206 per year, giving an appealing payback period of only seven years.