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 Hengji PV-Tech Energy

Here are the PSI Ratings for modules from Hengji PV-Tech 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
1Hengji PV-Tech EnergyHJM230M-28Polycrystalline2307.89*70
2Hengji PV-Tech EnergyHJM250P-20Polycrystalline2507.72*61
3Hengji PV-Tech EnergyHJM200P-16Polycrystalline2007.65*57
4Hengji PV-Tech EnergyHJM290P-24Polycrystalline2907.54*50
5Hengji PV-Tech EnergyHJM220M-28Monocrystalline2207.54*50
6Hengji PV-Tech EnergyHJM220P-18Polycrystalline2207.52*49
7Hengji PV-Tech EnergyHJM190M-24Monocrystalline1907.49*47
8Hengji PV-Tech EnergyHJM095M-12Monocrystalline957.44*44
9Hengji PV-Tech EnergyHJM240P-20Polycrystalline2407.41*42
10Hengji PV-Tech EnergyHJM185M-24Monocrystalline1857.32*37
11Hengji PV-Tech EnergyHJM280P-24Polycrystalline2807.28*35
12Hengji PV-Tech EnergyHJM190P-16Polycrystalline1907.27*34
13Hengji PV-Tech EnergyHJM210P-18Polycrystalline2107.18*29
14Hengji PV-Tech EnergyHJM210M-28Monocrystalline2107.17*29
15Hengji PV-Tech EnergyHJM180M-24Monocrystalline1807.16*28
16Hengji PV-Tech EnergyHJM230P-20Polycrystalline2307.06*24
17Hengji PV-Tech EnergyHJM090M-12Monocrystalline907.04*23
18Hengji PV-Tech EnergyHJM270P-24Polycrystalline2707.02*22
19Hengji PV-Tech EnergyHJM175M-24Monocrystalline1756.96*19
20Hengji PV-Tech EnergyHJM180P-16Polycrystalline1806.90*17
21Hengji PV-Tech EnergyHJM200P-18Polycrystalline2006.84*16
22Hengji PV-Tech EnergyHJM200M-28Monocrystalline2006.81*14
23Hengji PV-Tech EnergyHJM170M-24Monocrystalline1706.77*13
24Hengji PV-Tech EnergyHJM085M-12Monocrystalline856.61*9
25Hengji PV-Tech EnergyHJM190M-28Monocrystalline1906.48*7

* 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.