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 Saint Gobain Solar

Here are the PSI Ratings for modules from Saint Gobain Solar, 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
1Saint Gobain SolarSKA190M72-WNMonocrystalline1907.69*59
2Saint Gobain SolarSKA240P60-WNPolycrystalline2407.62*55
3Saint Gobain SolarSKA185M72-WNMonocrystalline1857.50*48
4Saint Gobain SolarSKA235P60-WNPolycrystalline2357.46*46
5Saint Gobain SolarSKA250M60-WNMonocrystalline2507.44*44
6Saint Gobain SolarSKA180M72-WNMonocrystalline1807.29*35
7Saint Gobain SolarSKA230P60-WNPolycrystalline2307.29*35
8Saint Gobain SolarSKA245M60-WNMonocrystalline2457.29*35
9Saint Gobain SolarSKA240M60-WNMonocrystalline2407.15*27
10Saint Gobain SolarSKA225P60-WNPolycrystalline2257.14*27
11Saint Gobain SolarSKA220P60-WNPolycrystalline2206.98*21
12Saint Gobain SolarSKA230M60-WNMonocrystalline2306.81*14
13Saint Gobain SolarSKA225M60-WNMonocrystalline2256.67*11

* 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.