Grombles

I installed a maximum sized domestic 4kw PV solar cell array on my South facing roof just before the government cut off date of 12th December 2011. I therefore qualify for the maximum Feed In Tariff of 43p per kw hour which ought to pay for my investment in about 8 years. So far so good. I do have a chimney which does interfere with some direct sunlight, and later in the day some distant trees do obstruct the sun in winter, so I am not expecting my array to produce as much as a set-up without interrupted sunlight. But I was led to expect a daily average throughout the year of 10kw hours (about 3,500 kwh per year). Our array has rarely produced more than 3 kwh in any day since 12/12/11, despite several very sunny ones. So I called Solarking, the installers (who did pull out all the stops to make sure I had  my installation up and running before the deadline. They were also extremely courteous and delivered a very tidy job). They said, "Don't worry, nobody gets much more th...