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 Sonali Energees USA

Here are the PSI Ratings for modules from Sonali Energees USA, 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	Sonali Energees USA	SS 1400 P	Polycrystalline	140	7.45*	45
2	Sonali Energees USA	SS2300-240W	Monocrystalline	240	7.35*	38
3	Sonali Energees USA	SS 2400 P	Polycrystalline	240	7.34*	38
4	Sonali Energees USA	SS2100-220W	Monocrystalline	220	7.29*	35
5	Sonali Energees USA	SS2500-250W	Monocrystalline	250	7.22*	31
6	Sonali Energees USA	SS2300-235W	Monocrystalline	235	7.20*	31
7	Sonali Energees USA	SS2100-215W	Monocrystalline	215	7.12*	27
8	Sonali Energees USA	SS1750-180W	Monocrystalline	180	7.10*	26
9	Sonali Energees USA	SS 2000 P	Polycrystalline	200	7.08*	25
10	Sonali Energees USA	SS2300-230W	Monocrystalline	230	7.05*	24
11	Sonali Energees USA	SS 2300 P	Polycrystalline	230	6.99*	21
12	Sonali Energees USA	SS2100-210W	Monocrystalline	210	6.96*	19
13	Sonali Energees USA	SS1750-175W	Monocrystalline	175	6.90*	17
14	Sonali Energees USA	SS2800-285W	Monocrystalline	285	6.86*	16
15	Sonali Energees USA	SS 1300 P	Polycrystalline	130	6.79*	14
16	Sonali Energees USA	SS 2200 P	Polycrystalline	220	6.73*	12
17	Sonali Energees USA	SS2800-280W	Monocrystalline	280	6.72*	12
18	Sonali Energees USA	SS 1900 P	Polycrystalline	190	6.71*	12
19	Sonali Energees USA	SS2800-275W	Monocrystalline	275	6.60*	9
20	Sonali Energees USA	SS1750-170W	Monocrystalline	170	6.56*	9
21	Sonali Energees USA	SS 2100 P	Polycrystalline	210	6.51*	8
22	Sonali Energees USA	SS 1250 P	Polycrystalline	125	6.33*	5
23	Sonali Energees USA	SS 1800 P	Polycrystalline	180	6.14*	4
24	Sonali Energees USA	SS 1200 P	Polycrystalline	120	6.07*	3
25	Sonali Energees USA	SS 1750 P	Polycrystalline	175	6.05*	3

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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.