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 Soltecture

Here are the PSI Ratings for modules from Soltecture, 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	Soltecture	Linion 100 L	Thin Film	100	6.32*	5
2	Soltecture	Linion 100 F	Thin Film	100	6.32*	5
3	Soltecture	Linion 95 F	Thin Film	95	6.01*	3
4	Soltecture	Linion 95 L	Thin Film	95	6.01*	3
5	Soltecture	Linion 90 L	Thin Film	90	5.71*	2
6	Soltecture	Linion 90 F	Thin Film	90	5.71*	2
7	Soltecture	Linion 85 R	Thin Film	85	5.41*	2
8	Soltecture	Linion 85 F	Thin Film	85	5.41*	2
9	Soltecture	Linion 85 L	Thin Film	85	5.41*	2

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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.