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 June 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 276kWh this month - practically identical to last year's result (up 0.13kWh to be precise).
With 480 hours of daylight in June (sun up to sun down for all 30 days), the average kWh generated per hour of daylight this month was 0.58kW, identical to May.
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| Monthly averages from 2013-2014 |
I note that this year, May and June have achieved an identical hourly average. Last year, the dip in May picked up in June. However, the monthly averages for April and May have all increased on last year's results.
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