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 January, February and March 2016 (in red) with last year's results (purple), year before (green) and distribution by average sunlight 1971-2010 (met office stats) in blue:
The totals for the months are:
January 31kWh (last year was 51kWh)
February 111kWh (last year was 92kWh)
March 173kWh (last year was 176kWh)
Averages:
WIND SPEED MEASUREMENTS:
I've discontinued the wind speed measurements - even over the windiest quarter of the year, the wind speeds at 5m height are not sufficient to recommend a cost-effective turbine installation.
Investigations currently ongoing into wind capture at 10m, and/or cheaper turbines (thereby allowing breakeven at a lower wind-speed).
