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Grundfos SQFlex E-Z Pump and Solar Panel Selection Chart

Click here to view, print, or download the Grundfos SQFlex E-Z Pump and Solar Panel Selection Chart.pdf

Click here to see all the SQFlex models

Click here to go back to the main SQFlex Solar Water Pump page.

Choose your water depth, then click on a Pump Model below to see it in more detail.

Water Depth / Solar Panels  Module Watts  250  250  250
 Qty of Modules  2  4  6
 Array Watts  500 100  1500
25 Feet  Pump Model 40 SQF-3 60 SQF-3 60 SQF-3
 Summer 13,000 26,000 35,000
 Winter  9,500  20,000 27,000
 Max Flow in GPM  24  47  62
50 Feet  Pump Model  11 SQF-2 40 SQF-5  40 SQF-5
  Summer  5,500 15,000 22,000
  Winter  4,300 10,000  16,000
  Max Flow in GPM 9.6 27 40
75 Feet  Pump Model  11 SQF-2 25 SQF-7 40 SQF-5
  Summer 4,600 9,200 14,500
  Winter  3,400 6,700 10,000
  Max Flow in GPM  8 17 27
100 Feet     Pump Model  11 SQF-2  11 SQF-2 25 SQF-7
  Summer 3,600  6,700 7,500
  Winter 2,600 5,400 7,500
  Max Flow in GPM 6.4  12  19
 125 Feet    Pump Model  11 SQF-2 11 SQF-2 16 SQF-10
  Summer  2,900 6,100 7,700
  Winter  2,000 4,800 5,600
  Max Flow in GPM  5.3 11  14
 150 Feet    Pump Model 6 SQF-2 11 SQF-2 11 SQF-2
  Summer 2,400 5,700 7,000
  Winter  1,800  4,200 5,500
  Max Flow in GPM  4.5  10 12
175 Feet     Pump Model 6 SQF-2 11 SQF-2  11 SQF-2
  Summer  2,300  5,000 6,600
  Winter  1,700  3,600 5,200
  Max Flow in GPM  4.1  8.8 12
200 Feet     Pump Model  6 SQF-2  11 SQF-2 11 SQF-2
  Summer  2,000 4,200 6,200
  Winter 1,500  3,000 4,800
  Max Flow in GPM 3.8 7.6 12
250 Feet     Pump Model 6 SQF-2 6 SQF-2 11 SQF-2
  Summer  1,600 3,000 5,300
  Winter  1,100  2,500 3,700
  Max Flow in GPM  3 5.5 9.6
 300 Feet    Pump Model  6 SQF-3 6 SQF-3 6 SQF-3
  Summer  1,500 3,000 3,500
  Winter 1,000 2,400 3000
  Max Flow in GPM  2.8 5.7 5.9
    400 Feet  Pump Model  3 SQF-3 6 SQF-3 6 SQF-3
  Summer 975 2,600 3,200
  Winter 700 1,900 2,600
  Max Flow in GPM  1.8 4.8  5.7
500 Feet     Pump Model 3 SQF-3 6 SQF-3 6 SQF-3
  Summer  800 2,000 2,800
  Winter 575 1,400 2,200
  Max Flow in GPM  1.5  3.7 5.5
  650 Feet   Pump Model  3 SQF-3 3 SQF-3  6 SQF-3
  Summer  500 1,300  2,100
  Winter 300 1,000 1,400
  Max Flow in GPM  .9 2.5 4.1
    800 Feet  Pump Model

Not enough power

from the solar panels       

 6 SQF-3
  Summer  1,300
  Winter  800
  Max Flow in GPM 2.5