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 Wanxiang New Energy

Here are the PSI Ratings for modules from Wanxiang New Energy, 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
1Wanxiang New EnergyWXS190P-USPolycrystalline1908.40*89
2Wanxiang New EnergyWXS185P-USPolycrystalline1858.19*83
3Wanxiang New EnergyWXS185S-USMonocrystalline1857.98*74
4Wanxiang New EnergyWXS280P-USPolycrystalline2807.96*73
5Wanxiang New EnergyWXS275P-USPolycrystalline2757.80*66
6Wanxiang New EnergyWXS180P-USPolycrystalline1807.79*65
7Wanxiang New EnergyWXS180S-USMonocrystalline1807.77*64
8Wanxiang New EnergyWXS225P-USPolycrystalline2257.75*63
9Wanxiang New EnergyWXS270P-USPolycrystalline2707.67*58
10Wanxiang New EnergyWXS220P-USPolycrystalline2207.58*53
11Wanxiang New EnergyWXS175S-USMonocrystalline1757.55*51
12Wanxiang New EnergyWXS265P-USPolycrystalline2657.53*49
13Wanxiang New EnergyWXS285P-USPolycrystalline2857.48*47
14Wanxiang New EnergyWXS215P-USPolycrystalline2157.42*42
15Wanxiang New EnergyWXS260P-USPolycrystalline2607.39*41
16Wanxiang New EnergyWXS255P-USPolycrystalline2557.25*33
17Wanxiang New EnergyWXS210P-USPolycrystalline2107.25*33
18Wanxiang New EnergyWXS250P-USPolycrystalline2507.10*26
19Wanxiang New EnergyWXS205P-USPolycrystalline2057.07*24
20Wanxiang New EnergyWXS245P-USPolycrystalline2456.96*19
21Wanxiang New EnergyWXS200P-USPolycrystalline2006.89*17
22Wanxiang New EnergyWXS240P-USPolycrystalline2406.83*15
23Wanxiang New EnergyWXS235P-USPolycrystalline2356.75*13
24Wanxiang New EnergyWXS230P-USPolycrystalline2306.60*9

* 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.