Solar Electricity production from a 7.05kWp system
I intend on this page to show the electricity production from our solar panels in Central Scotland facing South East and South West on a roof pitched at 60 degrees from the horizontal. It will hopefully, give you some idea of the production of the system.
November/December 2010
The first week of production saw 50 kWh generated. Not bad for the short days of November with low light levels, we did achieve 3.42kWp on several days, about half the potential maximum which again at low light levels was great.
Then came the snow. The panels can't work through snow so we produced no electricity. Of interest the snow comes off the panels much quicker than off the roof, often in avalanches, so it is important to dig out paths allowing for this. However, the lack of build up of deep snow on the roof protected the guttering, which came down when the snow came off the north facing roof.
Our total electricity for the two months was 108.45kWh. It won't light many houses but it is a start.
Then came the snow. The panels can't work through snow so we produced no electricity. Of interest the snow comes off the panels much quicker than off the roof, often in avalanches, so it is important to dig out paths allowing for this. However, the lack of build up of deep snow on the roof protected the guttering, which came down when the snow came off the north facing roof.
Our total electricity for the two months was 108.45kWh. It won't light many houses but it is a start.
3.22kWp facing WSW
MonthJanuary
February March April May June July August September October November December |
201163.147 kWh
97.67 kWh 187.72 kWh 368.8 kWh 407.22 kWh 336.707 kWh 390.238 kWh 251.104 kWh 237.91kWh 117.295kWh 84.985 kWh 37.679 kWh |
201268.093 kWh
104.677 kWh 232.597 kWh 230.139 kWh 362.308 kWh 238.978 kWh 274.37 kWh 320.3 kWh 234.64 kWh 154.37 kWh 80.91 kWh 40.24 kWh |
|
3.68 kWp facing SSE
MonthJanuary
February March April May June July August September October November December |
201191.274kWh
131.738kWh 247.91 kWh 428.56 kWh 484.8 kWh 398.152 kWh 485.95 kWh 307.812 kWh 311.188 kWh 163.59 kWh 124.562 kWh 28.217 kWh |
2012101.584 kWh
149.474 kWh 299.457 kWh 296.901 kWh 462.037 kWh 360.52 kWh 340.622 kWh 390.32 kWh 313.73 kWh 227.48 kWh 117.58 kWh 61.02 kWh |
201363.139 kWh
268.817 kWh 128.785 kWh 142.669 kWh 59.655 kWh |
201461.793 kWh
134.828 kWh 272.09 kWh 318.835 kWh 380.565 kWh 386.269 kWh 473.559 kWh 368.591 kWh 259.611 kWh 182.89 kWh 89.289 kWh 72.41 kWh |
2011
In 2011 we produced about 5780 kWh of electricity. I believe, from The Scottish Solar Group, that this is exceptional production, though interestingly it was only 10% above what our installer predicted. We will have to see if this pattern continues or if we see a drop off in production.
2012
2012 was a very wet grey year and widely accepted as having lower light levels. 3.68kWp gave 3120.725 kWh 3.22kWp gave 2341.622 kWh giving a total of 5462.347 kWh 38kWh short of predicted. We will see what 2013 brings.
