Principal Solar Institute

A community for development and installation professionals in the solar industry

The Principal Solar Institute Module Ratings

The Principal Solar Institute’s scientifically designed and certified combination of tests and performance standards provide an unbiased, comprehensive rating system – the PSI PV module rating. Seven essential characteristics related to initial and long-term PV module performance are combined to create the PSI Rating:

  • Actual Tested Maximum Power vs. Advertised
  • Temperature Coefficient at Maximum Power
  • Power at Low Irradiance to Power at High Irradiance Ratio
  • Normal Operating Cell Temperature (NOCT)
  • Total Area Efficiency
  • Negative Power Tolerance
  • Annual Power Reduction

These ratings allow you to make comparisons when analyzing PV modules and help you select the optimal PV module.

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PSI Ratings – PV Solar Modules from Sunpreme

Here are the PSI Ratings for modules from Sunpreme, calculated based on initial performance test data. If you don’t see a solar module that you are considering, contact us and we will try to add it.

Rank Manufacturer Model Type Power
(W DC)
PSI Rating Percentile
13SunpremeSNPM-GxB-370Thin Film37010.54*100
14SunpremeSNPM-GxB-SL-310Thin Film31010.49*100
15SunpremeSNPM-GxB-310 SMThin Film31010.40*100
16SunpremeSNPM-GxB-310Thin Film31010.40*100
17SunpremeSNPM-GxB-360Thin Film36010.27*99
18SunpremeSNPM-GxB-SL-300Thin Film30010.17*99
19SunpremeSNPM-GX-350Thin Film35010.10*99
20SunpremeSNPM-GxB-300Thin Film30010.07*99
21SunpremeSNPM-GxB-300 SMThin Film30010.07*99
22SunpremeSNPM-GxB-350Thin Film3509.98*99
23SunpremeSNPM-GX-340Thin Film3409.86*99
24SunpremeSNPM-GxB-340Thin Film3409.86*99
25SunpremeSNPM-GxB-SL-290Thin Film2909.82*99
26SunpremeSNPM-GxB-290 SMThin Film2909.73*99
27SunpremeSNPM-GxB-290Thin Film2909.73*99
28SunpremeSNPM-GxB-330Thin Film3309.53*98
29SunpremeSNPM-GX-330Thin Film3309.53*98
30SunpremeSNPM-GxB-280Thin Film2809.24*97
31SunpremeSNPM-GxB-270Thin Film2708.91*96
32SunpremeSNPM-GX-315Thin Film3158.83*95
33SunpremeSNPM-GX-310Thin Film3108.65*93
34SunpremeSNPM-GX-305Thin Film3058.56*92
35SunpremeSNPM-GX-300Thin Film3008.39*89
36SunpremeSNPM-GX-295Thin Film2958.22*84
37SunpremeSNPM-GX-290Thin Film2908.15*82
38SunpremeSNPM-GX-285Thin Film2857.98*74
39SunpremeSNPM-GX-240Thin Film2407.10*25
40SunpremeSNPM-GX-72-255Thin Film2557.01*22
41SunpremeSNPM-GX-235Thin Film2356.95*19
42SunpremeSNPM-GX-72-250Thin Film2506.87*16
43SunpremeSNPM-GX-230Thin Film2306.81*14
44SunpremeSNPM-GX-72-245Thin Film2456.71*12
45SunpremeSNPM-GX-225Thin Film2256.65*11
46SunpremeSNPM-GX-220Thin Film2206.50*7

* Modules denoted with an “*” use estimated values for one or more characteristics. Manufacturers can contact us to provide the missing data for these PV modules.

NOTE: PSI Ratings are based on publicly available data, and are subject to change as additional data and proprietary analyses become available for long-term performance.