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Welcome to the PV Powered String Sizing Tool. Use the Project Specifications section to specify your project. The Sizing Tool will then calculate compatible string configurations and show them in the Recommendations section.
Project Specifications
Fahrenheit  Celsius 
Roof  Ground  Pole 
from to
Filter Inverter List Current  Discontinued 
Module Specifications
Manufacturer: 1SolTech Model: 1STH-215-P
STC Watts 215.0 watts VOC Temp Coefficient -0.1343 V/Deg C
PTC Watts 189.4 watts Max Power Temp Coefficient n/a
VOC 36.3 vdc Coldest Day VOC 42.0 vdc
VMP 29.0 vdc Warmest Day VMP 23.1 vdc
IMP 7.35 A  
Inverter Specifications: PVP 100K-480V
Maximum DC Input Voltage 600 V Continuous Power Output 100,000 W
DC Peak Power Tracking Range 295 - 500 V Weighted CEC Efficiency 96.0%
DC IMP Nominal Current 356 A AC Nominal Voltage 480 V
  AC Operating Range 422 - 528 V
  AC Frequency 60 Hz
  AC Maximum Continuous Current 120 A
Recommendations:
Parallel
Strings		 Series
Modules		 STC Watts PTC Watts Inverter
AC Watts		 STC VOC Coldest Day
VOC		 STC VMP Warmest Day
VMP		 STC IMP  
44 13 122,980 W 108,336 W 104,003 W 472 vdc 547 vdc 377 vdc 300 vdc 323.4 A
43 13 120,185 W 105,874 W 101,639 W 472 vdc 547 vdc 377 vdc 300 vdc 316.05 A
42 13 117,390 W 103,412 W 99,275 W 472 vdc 547 vdc 377 vdc 300 vdc 308.7 A
41 14 123,410 W 108,715 W 104,366 W 509 vdc 589 vdc 406 vdc 323 vdc 301.35 A
41 13 114,595 W 100,950 W 96,912 W 472 vdc 547 vdc 377 vdc 300 vdc 301.35 A
40 14 120,400 W 106,064 W 101,821 W 509 vdc 589 vdc 406 vdc 323 vdc 294.0 A
40 13 111,800 W 98,488 W 94,548 W 472 vdc 547 vdc 377 vdc 300 vdc 294.0 A
39 14 117,390 W 103,412 W 99,275 W 509 vdc 589 vdc 406 vdc 323 vdc 286.65 A
39 13 109,005 W 96,025 W 92,184 W 472 vdc 547 vdc 377 vdc 300 vdc 286.65 A
38 14 114,380 W 100,760 W 96,730 W 509 vdc 589 vdc 406 vdc 323 vdc 279.3 A
38 13 106,210 W 93,563 W 89,821 W 472 vdc 547 vdc 377 vdc 300 vdc 279.3 A
37 14 111,370 W 98,109 W 94,184 W 509 vdc 589 vdc 406 vdc 323 vdc 271.95 A
37 13 103,415 W 91,101 W 87,457 W 472 vdc 547 vdc 377 vdc 300 vdc 271.95 A
36 14 108,360 W 95,457 W 91,639 W 509 vdc 589 vdc 406 vdc 323 vdc 264.6 A
36 13 100,620 W 88,639 W 85,093 W 472 vdc 547 vdc 377 vdc 300 vdc 264.6 A
35 14 105,350 W 92,806 W 89,093 W 509 vdc 589 vdc 406 vdc 323 vdc 257.25 A
35 13 97,825 W 86,177 W 82,729 W 472 vdc 547 vdc 377 vdc 300 vdc 257.25 A
34 14 102,340 W 90,154 W 86,548 W 509 vdc 589 vdc 406 vdc 323 vdc 249.9 A
34 13 95,030 W 83,714 W 80,366 W 472 vdc 547 vdc 377 vdc 300 vdc 249.9 A
33 14 99,330 W 87,502 W 84,002 W 509 vdc 589 vdc 406 vdc 323 vdc 242.55 A
33 13 92,235 W 81,252 W 78,002 W 472 vdc 547 vdc 377 vdc 300 vdc 242.55 A
32 14 96,320 W 84,851 W 81,457 W 509 vdc 589 vdc 406 vdc 323 vdc 235.2 A
32 13 89,440 W 78,790 W 75,638 W 472 vdc 547 vdc 377 vdc 300 vdc 235.2 A
31 14 93,310 W 82,199 W 78,911 W 509 vdc 589 vdc 406 vdc 323 vdc 227.85 A
31 13 86,645 W 76,328 W 73,275 W 472 vdc 547 vdc 377 vdc 300 vdc 227.85 A
30 14 90,300 W 79,548 W 76,366 W 509 vdc 589 vdc 406 vdc 323 vdc 220.5 A
30 13 83,850 W 73,866 W 70,911 W 472 vdc 547 vdc 377 vdc 300 vdc 220.5 A
29 14 87,290 W 76,896 W 73,820 W 509 vdc 589 vdc 406 vdc 323 vdc 213.15 A
29 13 81,055 W 71,403 W 68,547 W 472 vdc 547 vdc 377 vdc 300 vdc 213.15 A
28 14 84,280 W 74,244 W 71,275 W 509 vdc 589 vdc 406 vdc 323 vdc 205.8 A
28 13 78,260 W 68,941 W 66,183 W 472 vdc 547 vdc 377 vdc 300 vdc 205.8 A
27 14 81,270 W 71,593 W 68,729 W 509 vdc 589 vdc 406 vdc 323 vdc 198.45 A
27 13 75,465 W 66,479 W 63,820 W 472 vdc 547 vdc 377 vdc 300 vdc 198.45 A
26 14 78,260 W 68,941 W 66,183 W 509 vdc 589 vdc 406 vdc 323 vdc 191.1 A
26 13 72,670 W 64,017 W 61,456 W 472 vdc 547 vdc 377 vdc 300 vdc 191.1 A
25 14 75,250 W 66,290 W 63,638 W 509 vdc 589 vdc 406 vdc 323 vdc 183.75 A
25 13 69,875 W 61,555 W 59,092 W 472 vdc 547 vdc 377 vdc 300 vdc 183.75 A
24 14 72,240 W 63,638 W 61,092 W 509 vdc 589 vdc 406 vdc 323 vdc 176.4 A
24 13 67,080 W 59,092 W 56,729 W 472 vdc 547 vdc 377 vdc 300 vdc 176.4 A
23 14 69,230 W 60,986 W 58,547 W 509 vdc 589 vdc 406 vdc 323 vdc 169.05 A
23 13 64,285 W 56,630 W 54,365 W 472 vdc 547 vdc 377 vdc 300 vdc 169.05 A
22 14 66,220 W 58,335 W 56,001 W 509 vdc 589 vdc 406 vdc 323 vdc 161.7 A
22 13 61,490 W 54,168 W 52,001 W 472 vdc 547 vdc 377 vdc 300 vdc 161.7 A
21 14 63,210 W 55,683 W 53,456 W 509 vdc 589 vdc 406 vdc 323 vdc 154.35 A
21 13 58,695 W 51,706 W 49,637 W 472 vdc 547 vdc 377 vdc 300 vdc 154.35 A
20 14 60,200 W 53,032 W 50,910 W 509 vdc 589 vdc 406 vdc 323 vdc 147.0 A
20 13 55,900 W 49,244 W 47,274 W 472 vdc 547 vdc 377 vdc 300 vdc 147.0 A
19 14 57,190 W 50,380 W 48,365 W 509 vdc 589 vdc 406 vdc 323 vdc 139.65 A
19 13 53,105 W 46,781 W 44,910 W 472 vdc 547 vdc 377 vdc 300 vdc 139.65 A
18 14 54,180 W 47,728 W 45,819 W 509 vdc 589 vdc 406 vdc 323 vdc 132.3 A