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 Innotech Solar

Here are the PSI Ratings for modules from Innotech Solar, 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
1Innotech Solarx265Polycrystalline2658.14*81
2Innotech Solarx260Polycrystalline2607.97*74
3Innotech Solarx255Polycrystalline2557.89*70
4Innotech Solarx250Polycrystalline2507.72*61
5Innotech Solarx245Polycrystalline2457.67*58
6Innotech Solarx240Polycrystalline2407.52*49
7Innotech Solarx235Polycrystalline2357.36*39
8Innotech SolarITS220Fyz4Polycrystalline2307.23*32
9Innotech SolarITS230XXXXPolycrystalline2307.23*32
10Innotech SolarITS220Eyz4Polycrystalline2307.23*32
11Innotech SolarITS220Nxy4Monocrystalline2307.21*31
12Innotech SolarITS220Mxy4Monocrystalline2307.21*31
13Innotech SolarITS270Fyz3Polycrystalline2707.17*29
14Innotech SolarITS270Eyz3Polycrystalline2707.17*29
15Innotech Solarx230Polycrystalline2307.10*26
16Innotech SolarITS225XXXXPolycrystalline2257.07*24
17Innotech Solarx225Polycrystalline2256.94*19
18Innotech SolarITS270Fyz2Polycrystalline2606.92*18
19Innotech SolarITS270Eyz2Polycrystalline2606.92*18
20Innotech SolarITS270Myz3Monocrystalline2706.91*18
21Innotech SolarITS270Nyz3Monocrystalline2706.91*18
22Innotech SolarITS220Fyz3Polycrystalline2206.91*18
23Innotech SolarITS220Eyz3Polycrystalline2206.91*18
24Innotech SolarITS220Nyz3Monocrystalline2206.88*17
25Innotech SolarITS220Myz3Monocrystalline2206.88*17
26Innotech Solarx220Polycrystalline2206.84*16
27Innotech SolarITS215XXXXPolycrystalline2156.75*13
28Innotech SolarITS270Fyz1Polycrystalline2506.66*11
29Innotech SolarITS270Eyz1Polycrystalline2506.66*11
30Innotech SolarITS270Myz2Monocrystalline2606.64*10
31Innotech SolarITS270Nyz2Monocrystalline2606.64*10
32Innotech SolarITS220Eyz2Polycrystalline2106.61*9
33Innotech SolarITS220Fyz2Polycrystalline2106.61*9
34Innotech SolarITS210XXXXPolycrystalline2106.61*9
35Innotech SolarITS220Nyz2Monocrystalline2106.58*9
36Innotech SolarITS220Myz2Monocrystalline2106.58*9
37Innotech SolarITS270Myz1Monocrystalline2506.39*6
38Innotech SolarITS270Nyz1Monocrystalline2506.39*6

* 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.