Obviously the performance of a solar thermal system will vary depending on the location of the home, the insulation of the property, and your own hot water requirements. Solar thermal panels are capable of providing all of your hot water requirements from April to September. They will still make a contribution to your hot water needs for the rest of the year, but in general you will need a backup system to further heat the water in the colder months.
Caersws
Caersws is a town as well as community on the River Severn, in the Welsh region of Powys (Montgomeryshire) 5 miles (8 km) west of Newtown, and also midway between Aberystwyth and Shrewsbury. It has a station on the Cambrian Line from Aberystwyth to Shrewsbury. At the 2001 census it had a population of 1,526, raising somewhat to 1,586 at the 2011 Demographics. In contemporary Welsh, Caersws essentially suggests "Ft Kiss", although sws almost certainly stems from a few other source. It has been argued that the website may keep a Roman-era dedication to Zeus or protect the name of a conjectured British queen Swswen.