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 SolarPark Korea

Here are the PSI Ratings for modules from SolarPark Korea, 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	SolarPark Korea	SPP260 mono	Monocrystalline	260	7.92*	72
2	SolarPark Korea	SPP255 mono	Monocrystalline	255	7.78*	64
3	SolarPark Korea	SPP250 mono	Monocrystalline	250	7.61*	55
4	SolarPark Korea	SPP 250	Polycrystalline	250	7.57*	52
5	SolarPark Korea	SPP245 mono	Monocrystalline	245	7.48*	47
6	SolarPark Korea	SPP245	Polycrystalline	245	7.46*	45
7	SolarPark Korea	SPP240	Polycrystalline	240	7.31*	36
8	SolarPark Korea	SPP235	Polycrystalline	235	7.18*	29
9	SolarPark Korea	SPP 230	Polycrystalline	230	6.97*	20
10	SolarPark Korea	SPP 225	Polycrystalline	225	6.83*	15
11	SolarPark Korea	SPP 220	Polycrystalline	220	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.