Sunday 10 January 2016

Cloudy December gives Poor Solar Generation

With the full data set now loaded it's clear why December 2015 was so bad for solar panels.

http://solar-panels-review.321web.co.uk/index.php/yearly-comparison-of-solar-pv

The number of days below 2kWh generated was 23, compared to around 14 for previous years. In addition the maximum peak output was only 7.6kW compared to over 9kW previously.

http://solar-panels-review.321web.co.uk/index.php/solar-power-month-by-month/12-monthly-uk-solar-panel-electricity-output-for-december

Hopefully this won't be the pattern set by global warming with warmer, wetter, cloudier winters that hit solar panel generation, although the winter numbers are small so it would be far more drastic if the summers became cloudier!


December 2015 compared to previous years - almost half the electricity generated compared to 2014!


MonthEarliest Start TimeLatest End TimeMax Peak Output kWTotal Monthly OutputTotal Generation Time (hours)Min Daily Generation kWhMax Daily Generation kWh
12/2015 08:0015:451.95668.3512050.3817.61
12/2014 08:0515:552.124123.872080.0778.837
12/2013 08:1015:502.412100.5462040.1459.015
12/2012 08:0515:451.99290.8642010.2378.324
12/2011 08:0015:552.136103.372120.3598.542

Friday 8 January 2016

Rainy December & November 2015 Reduces Solar Panel Output

The final months of 2015 have been exceptionally poor for our solar panels with both November and December 2015 recording the worst generation figures in the whole 4 years since our panels were installed.






The wet cloudy weather that caused severe flooding across the UK also mean that the sun was rarely seen and very little electricity was generated giving only 81kWh for November and a paltry 69kWh for December compared to previous historical lows of 112kWh for November and 91kWh for December.


The full comparison is available on the site http://solar-panels-review.321web.co.uk/index.php/yearly-comparison-of-solar-pv


November compared to previous years
 
MonthEarliest Start TimeLatest End TimeMax Peak Output kWTotal Monthly OutputTotal Generation Time (hours)Min Daily Generation kWhMax Daily Generation kWh
11/2015 07:2016:052.30481.3412310.697.004
11/2014 07:1016:202.460112.4112240.08810.07
11/2013 07:2016:202.640126.8152310.25611.073
11/2012 07:1516:202.580150.3732330.46910.988
11/2011 07:1515:502.11251.508880.9798.176





Rainy December November 2015 reduces Solar Panel Output
Rainy December November 2015 reduces Solar Panel Output