Another sunny Solstice!

21 June: Report from Peveril Solar house: It was nice that the last two solstices, Dec 21 and June 21 were both sunny days, so one could compare. In this diagram, the two Poisson curves are at the same time and power scales, and show the difference impressively. Other people might go and watch the Sun rising over Stonehenge or Glastonbury Tor.... But me? I check the PV meter and the SMA website. How sad is that! .... :)
   Because we have a high hill to the south, the winter sunrise is an hour later than on level ground, and the sunset an hour earlier. So there is daylight, but not sunlight, hence the tail in and sudden steep rise at the start of the December solstice. By March equinox, the hill has less effect. At this time of year in June, the roof is consistently outperforming all the predictions, and with the sun rising and setting in the north quadrants, the hill has no impact on the performance.
   We have had no payment from the Feed in Tariff yet, the first one can't be expected until October. If you have PV now, don't forget to register!