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.
Stirling
The city of Sterling has got a population of 45,750 and is built around a big fortress and medieval aged town, next to the River Forth. Stirling is Scotland's smallest city and was just honored city rank in 2002 to mark the Queen's Golden Jubilee. The city has evolved quite a bit over many thousands of years, originally being a Stone Age settlement.