Principal Solar Institute

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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 Zhejiang Global Photovoltaic Technology

Here are the PSI Ratings for modules from Zhejiang Global Photovoltaic Technology, 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
1Zhejiang Global Photovoltaic TechnologyGSM-305Monocrystalline3057.65*57
2Zhejiang Global Photovoltaic TechnologyGSM-250Monocrystalline2507.61*54
3Zhejiang Global Photovoltaic TechnologyGSM-300Monocrystalline3007.49*47
4Zhejiang Global Photovoltaic TechnologyGSP-285Polycrystalline2857.48*46
5Zhejiang Global Photovoltaic TechnologyGSP-240Polycrystalline2407.47*46
6Zhejiang Global Photovoltaic TechnologyGSM-245Monocrystalline2457.43*43
7Zhejiang Global Photovoltaic TechnologyGSM-295Monocrystalline2957.38*40
8Zhejiang Global Photovoltaic TechnologyGSP-280Polycrystalline2807.36*39
9Zhejiang Global Photovoltaic TechnologyGSP-235Polycrystalline2357.33*37
10Zhejiang Global Photovoltaic TechnologyGSM-240Monocrystalline2407.27*34
11Zhejiang Global Photovoltaic TechnologyGSM-290Monocrystalline2907.24*33
12Zhejiang Global Photovoltaic TechnologyGSP-275Polycrystalline2757.21*31
13Zhejiang Global Photovoltaic TechnologyGSP-230Polycrystalline2307.15*28
14Zhejiang Global Photovoltaic TechnologyGSM-285Monocrystalline2857.14*27
15Zhejiang Global Photovoltaic TechnologyGSM-235Monocrystalline2357.12*26
16Zhejiang Global Photovoltaic TechnologyGSM-180Monocrystalline1807.10*25
17Zhejiang Global Photovoltaic TechnologyGSP-270Polycrystalline2707.09*25
18Zhejiang Global Photovoltaic TechnologyGSM-280Monocrystalline2807.00*21
19Zhejiang Global Photovoltaic TechnologyGSP-265Polycrystalline2656.97*20
20Zhejiang Global Photovoltaic TechnologyGSM-175Monocrystalline1756.90*17
21Zhejiang Global Photovoltaic TechnologyGSM-275Monocrystalline2756.88*17
22Zhejiang Global Photovoltaic TechnologyGSM-170Monocrystalline1706.70*12
23Zhejiang Global Photovoltaic TechnologyGSM-165Monocrystalline1656.51*8
24Zhejiang Global Photovoltaic TechnologyGSM-160Monocrystalline1606.31*5
25Zhejiang Global Photovoltaic TechnologyGSM-155Monocrystalline1556.12*4

* 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.