New system supplied June 2011. We had a 5 panel system installed. Each panel is 1m by 
1.6m Romag 225. We have a Sunnyboy 1200 inverter in the loft connected to a meter downstairs which then plugs into the fusebox.
The sunnyboy has an optional bluetooth adaptor which enables the data to be transmitted to either a receiver or a computer , so that the figures can be recorded without having to climb up into the loft to read the figures on the inverter.
The meter next to the fusebox records the total amount of electricity generated each day, which we record on the day by day pages.
There are the three standard off switches, for the DC to the inverter, the AC from the inverter and one by the fusebox to switch off the system should any maintenance be required.
Problems and features
We wanted as many solar panels as possible. The salesman and the estimator both came up with 5 panels as the maximum we could get on the roof. The installer worked out that we could get twice that number on the roof. One of the problems seems to be measuring the roof. All the quotes we got thought that it was difficult to get more than 5 panels on the roof. Later we will hopefully increase the numbers of panels.