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
1	Saint Gobain Solar	SKA190M72-WN	Monocrystalline	190	7.69*	59
2	Saint Gobain Solar	SKA240P60-WN	Polycrystalline	240	7.62*	55
3	Saint Gobain Solar	SKA185M72-WN	Monocrystalline	185	7.50*	48
4	Saint Gobain Solar	SKA235P60-WN	Polycrystalline	235	7.46*	46
5	Saint Gobain Solar	SKA250M60-WN	Monocrystalline	250	7.44*	44
6	Saint Gobain Solar	SKA180M72-WN	Monocrystalline	180	7.29*	35
7	Saint Gobain Solar	SKA230P60-WN	Polycrystalline	230	7.29*	35
8	Saint Gobain Solar	SKA245M60-WN	Monocrystalline	245	7.29*	35
9	Saint Gobain Solar	SKA240M60-WN	Monocrystalline	240	7.15*	27
10	Saint Gobain Solar	SKA225P60-WN	Polycrystalline	225	7.14*	27
11	Saint Gobain Solar	SKA220P60-WN	Polycrystalline	220	6.98*	21
12	Saint Gobain Solar	SKA230M60-WN	Monocrystalline	230	6.81*	14
13	Saint Gobain Solar	SKA225M60-WN	Monocrystalline	225	6.67*	11

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* 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.