A week ago today I completed my own 3 panel PV system, 540wt total. I know it’s no where near being a support to my electrical needs but was only fitted to my roof by me to be inspected by the MCS to become accredited to install for customers. Given this week we have had mostly sunny days I am very happy and a bit surprised with its performance. In total I have generated 20.3Kwh. Think when money allows I will be expanding it may be to 2.5Kw.