We have a 2kW 8 panel solar array (Panasonic HIT panels), mounted on a south-facing roof at approximately 35-40° angle from the horizontal, which was installed at the end of August 2013.
These are the results for November 2015 (in red) with last year's results (purple), year before (green) and distribution by average sunlight 1971-2010 (met office stats) in blue:
The panels have done 21kWh this month - down 9kWh on last year's results.
With 248 hours of daylight in November (sun up to sun down for all 30 days), the average kWh generated per hour of daylight this month was 0.08kW.
In September, I started monitoring the average wind speeds across my back garden to see if a wind turbine would be a financially viable investment.
Here is a graph showing December's wind speeds:
Average wind speed for the month was 2.7m/s.
Average gust speed for the month was 4.4m/s.
Maximum wind speed recorded for the month was 9.2m/s.
Maximum gust speed was 13.9m/s.
