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 Jiangsu Wanfeng PV

Here are the PSI Ratings for modules from Jiangsu Wanfeng PV, 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
1Jiangsu Wanfeng PVWF280P-02APolycrystalline2807.36*39
2Jiangsu Wanfeng PVWF185M-01EMonocrystalline1857.33*38
3Jiangsu Wanfeng PVWF275P-02APolycrystalline2757.22*32
4Jiangsu Wanfeng PVWF230P-02BPolycrystalline2307.14*27
5Jiangsu Wanfeng PVWF180M-01EMonocrystalline1807.13*27
6Jiangsu Wanfeng PVWF270P-02APolycrystalline2707.09*25
7Jiangsu Wanfeng PVWF225P-02BPolycrystalline2256.99*21
8Jiangsu Wanfeng PVWF175M-01EMonocrystalline1756.98*21
9Jiangsu Wanfeng PVWF265P-02APolycrystalline2656.96*19
10Jiangsu Wanfeng PVWF260P-02APolycrystalline2606.83*16
11Jiangsu Wanfeng PVWF220P-02BPolycrystalline2206.83*15
12Jiangsu Wanfeng PVWF215P-02BPolycrystalline2156.76*13
13Jiangsu Wanfeng PVWF255P-02APolycrystalline2556.70*12
14Jiangsu Wanfeng PVWF250P-02APolycrystalline2506.62*10
15Jiangsu Wanfeng PVWF210P-02BPolycrystalline2106.60*9
16Jiangsu Wanfeng PVWF245P-02APolycrystalline2456.44*7
17Jiangsu Wanfeng PVWF205P-02BPolycrystalline2056.44*7
18Jiangsu Wanfeng PVWF240P-02APolycrystalline2406.30*5
19Jiangsu Wanfeng PVWF200P-02BPolycrystalline2006.29*5

* 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.