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 Prism Solar Technologies

Here are the PSI Ratings for modules from Prism Solar Technologies, 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
1Prism Solar TechnologiesBi60S-356BSTCMonocrystalline2809.13*97
2Prism Solar TechnologiesBi60S-349BSTCMonocrystalline2758.94*96
3Prism Solar TechnologiesBi60-356BSTCMonocrystalline2808.89*96
4Prism Solar TechnologiesBi60S-343BSTCMonocrystalline2708.75*94
5Prism Solar TechnologiesBi60S-337BSTCMonocrystalline2658.72*94
6Prism Solar TechnologiesBi60-349BSTCMonocrystalline2758.70*94
7Prism Solar TechnologiesBi60-343BSTCMonocrystalline2708.67*94
8Prism Solar TechnologiesB265Monocrystalline2658.63*93
9Prism Solar TechnologiesBi60S-330BSTCMonocrystalline2608.51*91
10Prism Solar TechnologiesBi60-337BSTCMonocrystalline2658.48*91
11Prism Solar TechnologiesB260Monocrystalline2608.48*91
12Prism Solar TechnologiesBi60-330BSTCMonocrystalline2608.29*86
13Prism Solar TechnologiesB 255Monocrystalline2557.89*70
14Prism Solar TechnologiesB 245Monocrystalline2457.87*69
15Prism Solar TechnologiesB 250Monocrystalline2507.73*62
16Prism Solar TechnologiesB 240Monocrystalline2407.42*42
17Prism Solar TechnologiesBi48-286BSTCMonocrystalline2257.11*26
18Prism Solar TechnologiesB 235Monocrystalline2357.08*25
19Prism Solar TechnologiesBi48-279BSTCMonocrystalline2206.95*19
20Prism Solar TechnologiesBi48-273BSTCMonocrystalline2156.79*14
21Prism Solar TechnologiesBi48-267BSTCMonocrystalline2106.63*10
22Prism Solar TechnologiesB 210Monocrystalline2106.56*9
23Prism Solar TechnologiesBi48-260BSTCMonocrystalline2056.47*7
24Prism Solar TechnologiesB 155Monocrystalline1556.45*7
25Prism Solar TechnologiesB 165SMonocrystalline1656.41*6
26Prism Solar TechnologiesB 205Monocrystalline2056.41*6
27Prism Solar TechnologiesB 200Monocrystalline1966.14*4
28Prism Solar TechnologiesB 150Monocrystalline1476.13*4
29Prism Solar TechnologiesB 195Monocrystalline1956.11*4
30Prism Solar TechnologiesB 145Monocrystalline1456.05*3
31Prism Solar TechnologiesHB 180Monocrystalline1775.82*3

* 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.