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 BJ Penn

Here are the PSI Ratings for modules from BJ Penn, 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	BJ Penn	BJP265M-Bv	Polycrystalline	265	8.35*	88
2	BJ Penn	BJP315M-Av	Polycrystalline	315	8.30*	87
3	BJ Penn	BJP260M-Bv	Polycrystalline	260	8.20*	84
4	BJ Penn	BJP310M-Av	Polycrystalline	310	8.18*	83
5	BJ Penn	BJP255S-B	Monocrystalline	255	8.07*	78
6	BJ Penn	BJP305M-A	Polycrystalline	305	8.05*	77
7	BJ Penn	BJP305M-Av	Polycrystalline	305	8.05*	77
8	BJ Penn	BJP255M-Bv	Polycrystalline	255	8.05*	78
9	BJ Penn	BJP255M-B	Polycrystalline	255	8.03*	77
10	BJ Penn	BJP300M-A	Polycrystalline	300	7.93*	72
11	BJ Penn	BJP250S-B	Monocrystalline	250	7.92*	72
12	BJ Penn	BJP300M-Av	Polycrystalline	300	7.91*	71
13	BJ Penn	BJP250M-Bv	Polycrystalline	250	7.89*	70
14	BJ Penn	BJP250M-B	Polycrystalline	250	7.87*	69
15	BJ Penn	BJP295M-A	Polycrystalline	295	7.79*	65
16	BJ Penn	BJP295M-Av	Polycrystalline	295	7.78*	64
17	BJ Penn	BJP245S-B	Monocrystalline	245	7.76*	63
18	BJ Penn	BJP245M-Bv	Polycrystalline	245	7.72*	61
19	BJ Penn	BJP245M-B	Polycrystalline	245	7.71*	60
20	BJ Penn	BJP290M-Av	Polycrystalline	290	7.66*	58
21	BJ Penn	BJP240M-B	Polycrystalline	240	7.62*	55
22	BJ Penn	BJP290M-A	Polycrystalline	290	7.58*	53
23	BJ Penn	BJP285M-Av	Polycrystalline	285	7.52*	49
24	BJ Penn	BJP285M-A	Polycrystalline	285	7.44*	45
25	BJ Penn	BJP280M-A	Polycrystalline	280	7.32*	37
26	BJ Penn	BJP275M-A	Polycrystalline	275	7.19*	30
27	BJ Penn	BJP270M-A	Polycrystalline	270	7.05*	24

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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.