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 Silevo

Here are the PSI Ratings for modules from Silevo, 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	Silevo	Triex U310 Black	Monocrystalline	310	9.84*	99
2	Silevo	Triex U310	Monocrystalline	310	9.84*	99
3	Silevo	Triex R235	Monocrystalline	235	9.79*	99
4	Silevo	Triex R235 Black	Monocrystalline	235	9.79*	99
5	Silevo	Triex U305	Monocrystalline	305	9.68*	99
6	Silevo	Triex U305 Black	Monocrystalline	305	9.68*	99
7	Silevo	Triex H60-290	Monocrystalline	290	9.64*	98
8	Silevo	Triex R230 Black	Monocrystalline	230	9.52*	98
9	Silevo	Triex U300	Monocrystalline	300	9.52*	98
10	Silevo	Triex U300 Black	Monocrystalline	300	9.52*	98
11	Silevo	Triex R230	Monocrystalline	230	9.52*	98
12	Silevo	Triex U295	Monocrystalline	295	9.40*	98
13	Silevo	Triex U295 Black	Monocrystalline	295	9.40*	98
14	Silevo	Triex H60-280	Monocrystalline	280	9.28*	97
15	Silevo	Triex U290	Monocrystalline	290	9.26*	97
16	Silevo	Triex U290 Black	Monocrystalline	290	9.26*	97
17	Silevo	Triex U-295 SleekBlack	Monocrystalline	295	9.19*	97
18	Silevo	Triex R225	Monocrystalline	225	9.16*	97
19	Silevo	Triex R225 Black	Monocrystalline	225	9.16*	97
20	Silevo	Triex R220	Monocrystalline	220	9.16*	97
21	Silevo	Triex R220 Black	Monocrystalline	220	9.16*	97
22	Silevo	Triex R215 Black	Monocrystalline	215	9.04*	97
23	Silevo	Triex R215	Monocrystalline	215	9.04*	97
24	Silevo	Triex U-290 SleekBlack	Monocrystalline	290	9.02*	97
25	Silevo	Triex H60-270	Monocrystalline	270	8.96*	96
26	Silevo	Triex U-285 SleekBlack	Monocrystalline	285	8.90*	96
27	Silevo	Triex U-280 SleekBlack	Monocrystalline	280	8.78*	95

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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.