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Solar Data Home

2007 Solar Data Home Page

When you click on any of the buttons to the left you will see a day by day spreadsheet of each month's solar power generation. With each sheet you will be able to see the data in a graph format.

Note that the bar graphs illustrate the total power used by the house. The yellow part of the bar indicates the amount of power generated by the solar array.

Furthermore, if the bar descends below the bottom of the graph then for that day more power was produced than was used. The reading on our house meter will be less than the day before. This will occur in the summer time when we are not using air conditioning or the dehumidifier.

Below see the year to date at a glance. Gen means power generated by solar. Grid means power used from the grid. And % Gen is the electricity generated each month as a percent of the total monthly electrical power usage.

Some Statistics from the 2007 Data Base

  Average Efficiency for year:   4.0  Wh/kW/min
  Maximum Efficiency for year:   8.6  Wh/kW/min
  Median Efficiency for year:   4.2  Wh/kW/min
  Std Deviation      2.2  Wh/kW/min
               
  Average Daily Generation:   4.4  kWh  
  Maximum Daily Generation:   9.4  kWh  
  Median Daily Generation:   4.4  kWh  
  Std Deviation      2.8  kWh  
               
  Kilowatt hours generated per kilowatt of installed base:  1068.9

 

Year 2007 Monthly kWh Analysis

    Month Gen Grid % Gen
  January 69.9 505.2 12.2
  February 107.7 493.1 17.9
  March 134.7 378.6 26.2
  April 123.4 214.1 36.6
  May 215.4 12.4 94.6
  June 218.9 72.8 75.0
  July 193.2 106.9 64.4
  August 182.4 128.4 58.7
  September 161.9 106.0 60.4
  October 87.8 180.5 32.7
  November 70.5 314.0 18.3
  December 37.6 515.0 6.8
         
  Total: 1603.4 3027.0 34.6

 

Year 2007 Monthly Peak Power Analysis

 
    Minimum Maximum Average Median Std Deviation
  Jan-07 82 1652 936 1131 518
  Feb-07 60 1675 1181 1347 428
  Mar-07 220 1664 1128 1288 445
  Apr-07 279 1782 1112 1130 397
  May-07 202 1645 1134 1114 259
  Jun-07 653 1787 1183 1101 228
  Jul-07 274 1639 1178 1228 284
  Aug-07 251 1561 1102 1150 269
  Sep-07 727 1715 1182 1107 213
  Oct-07 87 1572 1079 1134 374
  Nov-07 76 1561 966 1089 415
  Dec-07 0 1578 557 208 526