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 Hunan Sunzone Optoelectronics Energy

Here are the PSI Ratings for modules from Hunan Sunzone Optoelectronics 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
1Hunan Sunzone Optoelectronics EnergySZ190M-36Monocrystalline1907.78*64
2Hunan Sunzone Optoelectronics EnergySZ290P-35Polycrystalline2907.70*60
3Hunan Sunzone Optoelectronics EnergySZ240P-29Polycrystalline2407.63*56
4Hunan Sunzone Optoelectronics EnergySZ185M-36Monocrystalline1857.58*52
5Hunan Sunzone Optoelectronics EnergySZ285P-35Polycrystalline2857.58*53
6Hunan Sunzone Optoelectronics EnergySZ235P-29Polycrystalline2357.48*47
7Hunan Sunzone Optoelectronics EnergySZ280P-35Polycrystalline2807.44*44
8Hunan Sunzone Optoelectronics EnergySZ180M-36Monocrystalline1807.35*38
9Hunan Sunzone Optoelectronics EnergySZ275P-35Polycrystalline2757.31*36
10Hunan Sunzone Optoelectronics EnergySZ230P-29Polycrystalline2307.31*36
11Hunan Sunzone Optoelectronics EnergySZ225P-29Polycrystalline2257.16*28
12Hunan Sunzone Optoelectronics EnergySZ220P-29Polycrystalline2207.00*21

* 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.