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 were installed at the end of August 2013.
This is the results for February 2015 (in red) with last year's results (green), and distribution by average sunlight 1971-2010 (met office stats) in blue:
The panels have done 92.4kWh this month, down 5.88kWh on last year.
With 252 hours of daylight in January (sun up to sun down for all 31 days), the average kWh generated per hour of daylight this month was 0.37kW.
We've received our feed-in tariff payment at the beginning of March, for the winter quarter (Dec-Jan-Feb) - this was the princely sum of £29.35. If you take into account the savings made on electricity we've not had to buy from the grid, the total benefit for the quarter is £54.91.
The total benefit for the half-year September 2014 - February 2015 is £179.55. This is up slightly on the same period last year, £147.84.
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