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 Sunny International Power

Here are the PSI Ratings for modules from Sunny International Power, 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	Sunny International Power	SPM-200SB105	Monocrystalline	200	8.13*	81
2	Sunny International Power	SPM-270PB206	Polycrystalline	270	7.87*	69
3	Sunny International Power	SPM-220PB203	Polycrystalline	220	7.81*	66
4	Sunny International Power	SPM-290PB205	Polycrystalline	290	7.80*	65
5	Sunny International Power	SPM-190SB105	Monocrystalline	190	7.75*	63
6	Sunny International Power	SPM-240PB204	Polycrystalline	240	7.68*	59
7	Sunny International Power	SPM-260PB206	Polycrystalline	260	7.58*	53
8	Sunny International Power	SPM-280PB205	Polycrystalline	280	7.52*	49
9	Sunny International Power	SPM-210PB203	Polycrystalline	210	7.47*	46
10	Sunny International Power	SPM-230PB204	Polycrystalline	230	7.37*	40
11	Sunny International Power	SPM-180SB105	Monocrystalline	180	7.33*	38
12	Sunny International Power	SPM-250PB206	Polycrystalline	250	7.28*	35
13	Sunny International Power	SPM-270PB205	Polycrystalline	270	7.26*	34
14	Sunny International Power	SPM-200PB203	Polycrystalline	200	7.09*	25
15	Sunny International Power	SPM-220PB204	Polycrystalline	220	7.05*	23
16	Sunny International Power	SPM-240PB206	Polycrystalline	240	7.00*	21
17	Sunny International Power	SPM-260PB205	Polycrystalline	260	6.97*	20
18	Sunny International Power	SPM-190PB203	Polycrystalline	190	6.78*	13
19	Sunny International Power	SPM-230PB206	Polycrystalline	230	6.71*	12
20	Sunny International Power	SPM-250PB205	Polycrystalline	250	6.71*	12
21	Sunny International Power	SPM-210PB204	Polycrystalline	210	6.70*	12
22	Sunny International Power	SPM-180PB203	Polycrystalline	180	6.40*	6
23	Sunny International Power	SPM-200PB204	Polycrystalline	200	6.38*	6
24	Sunny International Power	SPM-240PB205	Polycrystalline	240	6.36*	6

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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.