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 Solar Frontier

Here are the PSI Ratings for modules from Solar Frontier, 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
1Solar FrontierSF175-SThin Film1758.92*96
2Solar FrontierSF170-SThin Film1708.72*94
3Solar FrontierSF165-SThin Film1658.41*89
4Solar FrontierSF160-SThin Film1608.19*83
5Solar FrontierSF155-LThin Film1557.87*69
6Solar FrontierSF155-TThin Film1557.87*69
7Solar FrontierSF155-SThin Film1557.83*67
8Solar FrontierSF150-SThin Film1507.71*60
9Solar FrontierSF150-LThin Film1507.68*59
10Solar FrontierSF150-TThin Film1507.68*59
11Solar FrontierSF145-SThin Film1457.45*45
12Solar FrontierSF145-TThin Film1457.42*42
13Solar FrontierSF145-LThin Film1457.42*42
14Solar FrontierSF140-SThin Film1407.19*30
15Solar FrontierSF140-TThin Film1407.19*30
16Solar FrontierSF140-LThin Film1407.19*30
17Solar FrontierSF135-LThin Film1356.94*19
18Solar FrontierSF135-TThin Film1356.94*19
19Solar FrontierSF135-SThin Film1356.93*18
20Solar FrontierSF90-US-BThin Film906.75*13
21Solar FrontierSF130-TThin Film1306.72*12
22Solar FrontierSF130-LThin Film1306.72*12
23Solar FrontierSF130-SThin Film1306.70*12
24Solar FrontierSF85-US-PThin Film856.38*6
25Solar FrontierSF85-US-BThin Film856.38*6
26Solar FrontierSC80-US-PThin Film805.83*3
27Solar FrontierSF80-US-PThin Film805.83*3
28Solar FrontierSF80-US-BThin Film805.83*3
29Solar FrontierSF75-US-BThin Film755.36*2
30Solar FrontierSF75-US-PThin Film755.36*2
31Solar FrontierSC75-US-PThin Film755.36*2
32Solar FrontierSC70-US-PThin Film704.92*1
33Solar FrontierSF70-US-BThin Film704.92*1
34Solar FrontierSF70-US-PThin Film704.92*1

* 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.