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High Volume Solar Water Pump Selection Chart

Estimated Water Production from Grundfos SQFlex Pumps

(Summer and winter volumes and peak flow rates based on solar array wattage)

Select your Grundfos pump.  The left column shows total head in feet and meters. The top row shows module wattage and number of modules. Boxes show seasonal pump performance and maximum flow.  


High Volume Surface Solar Water Pumps

Daily volume and flow calculations are calculated with Fresno, CA data at a 36° tilt in July, solar insolation of 7.8 kWH/m2. Winter calculations are calculated with Fresno, CA data at a 36° tilt in February, solar insolation of 4.7 kWH/m2.

How can you calculate your solar insolation?  Visit the National Renewable Energy Laboratory's PVWatts Viewer.

Most high volume solar pumping systems will give significantly more output in the summer than in the winter. Also, up to 40% more water can be pumped in the summer if the array is on a tracking mount (these estimates are for non-tracking array mounting). The output can vary with different locations and years, and is not guaranteed.

For high volume solar surface pumps look down this page

Module watts 230+ 230+ 230+ 230+ 230+ 230+ Modules in series 2 3 4 5 6 7 Head feet (meters) Solar array watts 460 690 920 1150 1380 1610 6   (2) Pump model 60 SQF-3 60 SQF-3 60 SQF-3 60 SQF-3 60 SQF-3 60 SQF-3 Summer gallons per day 24,885 31,609 37,627 42,809 46,335 49,272 Winter gallons per day 19,944 26,177 31,410 35,264 38,204 40,675 Max gallons per minute 44 55 64 73 78 82 25   (8) Pump model 40 SQF-3 40 SQF-3 60 SQF-3 60 SQF-3 60 SQF-3 60 SQF-3 Summer gallons per day 13,027 20,089 26,345 31,950 35,680 38,605 Winter gallons per day 9,539 15,049 19,889 24,146 27,295 30,149 Max gallons per minute 27 40 52 61 67 70 50   (15) Pump model 11 SQF-2 25 SQF-7 40 SQF-5 40 SQF-5 40 SQF-5 40 SQF-5 Summer gallons per day 5,582 9,725 14,817 19,166 22,462 25,183 Winter gallons per day 4,287 7,100 10,684 13,909 16,552 18,838 Max gallons per minute 11 20 32 40 45 49 75   (23) Pump model 11 SQF-2 11 SQF-2 25 SQF-7 25 SQF-7 25 SQF-7 40 SQF-5 Summer gallons per day 4,580 6,300 9,221 11,832 13,742 17,381 Winter gallons per day 3,410 5,067 6,691 8,624 10,157 12,345 Max gallons per minute 9 12 20 24 27 37 100   (30) Pump model 11 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 25 SQF-7 25 SQF-7 Summer gallons per day 3,606 5,617 6,695 7,303 10,833 12,536 Winter gallons per day 2,639 4,182 5,439 6,021 7,662 9,065 Max gallons per minute 7 12 12 12 23 26 125   (38) Pump model 11 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 25 SQF-7 Summer gallons per day 2,897 4,769 6,145 6,915 7,286 10,006 Winter gallons per day 2,085 3,435 4,807 5,536 5,974 7,055 Max gallons per minute 6 9 12 12 12 21 150   (46) Pump model 6 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 25 SQF-7 Summer gallons per day 2,454 4,041 5,675 6,565 6,952 7,844 Winter gallons per day 1,851 2,903 4,198 5,114 5,543 5,397 Max gallons per minute 5 9 12 12 12 18 175  ( 53) Pump model 6 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 Summer gallons per day 2,282 3,450 5,024 6,114 6,633 6,926 Winter gallons per day 1,672 2,442 3,594 4,682 5,233 5,531 Max gallons per minute 5 8 11 12 12 12 200   (61) Pump model 6 SQF-2 6 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 Summer gallons per day 2,050 2,885 4,237 5,593 6,199 6,586 Winter gallons per day 1,480 2,288 3,015 4,036 4,777 5,207 Max gallons per minute 4 5 9 12 12 12 250   (76) Pump model 6 SQF-2 6 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 11 SQF-2 Summer gallons per day 1,584 2,585 3,556 4,509 5,440 6,477 Winter gallons per day 1,097 1,970 2,632 3,315 3,969 4,656 Max gallons per minute 4 5 7 9 11 13 300   (91) Pump model 6 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 Summer gallons per day 1,524 2,516 3,058 3,379 3,556 3,628 Winter gallons per day 1,091 1,835 2,439 2,752 2,957 3,058 Max gallons per minute 3 5 6 6 6 6 400   (122) Pump model 3 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 Summer gallons per day 974 1,859 2,613 3,025 3,216 3,365 Winter gallons per day 719 1,315 1,942 2,360 2,564 2,737 Max gallons per minute 2 4 6 6 6 6 500   (152) Pump model 3 SQF-3 3 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 Summer gallons per day 814 1,287 2,000 2,593 2,857 3,025 Winter gallons per day 585 987 1,402 1,902 2,212 2,398 Max gallons per minute 2 3 5 6 6 6 650   (198) Pump model 3 SQF-3 3 SQF-3 3 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 Summer gallons per day 498 990 1,298 1702 2149 2415 Winter gallons per day 316 692 1,015 1107 1473 1819 Max gallons per minute 1 2 3 4 5 5 800   (244) Pump model 6 SQF-3 6 SQF-3 6 SQF-3 6 SQF-3 Summer gallons per day 421 871 1325 1741 Winter gallons per day 179 470 796 1111 Max gallons per minute 1 3 4 4

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Solaram Surface Pumps

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