My own solar photovoltaic system 
Last updated on: 2009-11-30
Relevant figures:
| Total production 3.8 MWh Feed-in money 2260 € ROI 14 % Average daily energy production 12 kWh Average week 83.1 kWh Average month 374.6 kWh Best day 2009-07-18 20.8 kWh 7 Wh/Wp Best month July 2009 525 kWh 177 Wh/Wp Days monitored 323 CO2 savings 200 Kg |
Technical data:
| Power 2970 Wp Latitude 43.588144 Longitude 3.761561 Orientation South -10° Tilt 18° FIT 0.57 € Total cost 16 k€ Cell area 20.25 m² Module area 22.65 m² Module specs Inverter specs CO2 emissions Simulation |
For comparison purposes:
Monthly energy production in Wh/Wp
Comment: In April, the datalogger did not work for a few days
Detailed graphs below:
Best day energy production (Saturday July, 18th 2009: 20.8 kWh or 173% the average day)
Comment: A naughty cloud showed off right during solar noon!
Worst day energy production (Saturday January, 31st 2009: 421 Wh or 4% the average day))
Comment: We clearly see a low and unsteady insolation
Best & worst days energy production comparison
Comment: Notice the y-axis scales !
Best week energy production (from 2009-07-06 to 2009-07-12, 136 kWh)
Comment: ...Worst week energy production (from 2009-11-16 to 2009-11-22, 24 kWh)
Comment: ...
Monthly energy production
Comment: April's production seems abnormal
Energy production in April 2009
Comment: There is a 6-day long downtime in April!
Best month energy production (July 2009, 525 kWh)
Comment: Rock 'n Roll :-D
Worst month energy production (January 2009, 126 kWh)
Comment: Datalogger started on January 12th