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 Siliken Modules

Here are the PSI Ratings for modules from Siliken Modules, 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	Siliken Modules	SLK72P6L BLK/WHT 305Wp	Polycrystalline	305	7.94*	73
2	Siliken Modules	SLK72P6L SLV/WHT 305Wp	Polycrystalline	305	7.94*	73
3	Siliken Modules	SLK60P6L SLV/WHT 255Wp	Polycrystalline	255	7.89*	70
4	Siliken Modules	SLK60P6L BLK/WHT 255Wp	Polycrystalline	255	7.89*	70
5	Siliken Modules	SLK72P6L BLK/WHT 300Wp	Polycrystalline	300	7.82*	67
6	Siliken Modules	SLK72P6L SLV/WHT 300Wp	Polycrystalline	300	7.82*	67
7	Siliken Modules	SLK60P6L BLK/WHT 250Wp	Polycrystalline	250	7.79*	65
8	Siliken Modules	SLK60P6L SLV/WHT 250Wp	Polycrystalline	250	7.79*	65
9	Siliken Modules	SLK60P6L BLK/BLK 250Wp	Polycrystalline	250	7.74*	62
10	Siliken Modules	SLK72P6L BLK/WHT 295Wp	Polycrystalline	295	7.69*	59
11	Siliken Modules	SLK72P6L SLV/WHT 295Wp	Polycrystalline	295	7.69*	59
12	Siliken Modules	SLK60P6L BLK/WHT 245Wp	Polycrystalline	245	7.62*	55
13	Siliken Modules	SLK60P6L SLV/WHT 245Wp	Polycrystalline	245	7.62*	55
14	Siliken Modules	SLK60P6L BLK/BLK 245Wp	Polycrystalline	245	7.57*	52
15	Siliken Modules	SLK72P6L SLV/WHT 290Wp	Polycrystalline	290	7.56*	52
16	Siliken Modules	SLK72P6L BLK/WHT 290Wp	Polycrystalline	290	7.56*	52
17	Siliken Modules	SLK60P6L SLV/WHT 240Wp	Polycrystalline	240	7.48*	47
18	Siliken Modules	SLK60P6L BLK/WHT 240Wp	Polycrystalline	240	7.48*	47
19	Siliken Modules	SLK72P6L BLK/WHT 285Wp	Polycrystalline	285	7.43*	43
20	Siliken Modules	SLK72P6L SLV/WHT 285Wp	Polycrystalline	285	7.43*	43
21	Siliken Modules	SLK60P6L BLK/BLK 240Wp	Polycrystalline	240	7.43*	43
22	Siliken Modules	SLK72P6L SLV/WHT 280Wp	Polycrystalline	280	7.35*	38
23	Siliken Modules	SLK72P6L BLK/WHT 280Wp	Polycrystalline	280	7.35*	38
24	Siliken Modules	SLK60P6L BLK/WHT 235Wp	Polycrystalline	235	7.32*	37
25	Siliken Modules	SLK60P6L SLV/WHT 235Wp	Polycrystalline	235	7.32*	37
26	Siliken Modules	SLK60P6L BLK/BLK 235Wp	Polycrystalline	235	7.27*	34
27	Siliken Modules	SLK72P6L BLK/WHT 275Wp	Polycrystalline	275	7.21*	31
28	Siliken Modules	SLK72P6L SLV/WHT 275Wp	Polycrystalline	275	7.21*	31
29	Siliken Modules	SLK60P6L SLV/WHT 230Wp	Polycrystalline	230	7.15*	28
30	Siliken Modules	SLK60P6L BLK/WHT 230Wp	Polycrystalline	230	7.15*	28
31	Siliken Modules	SLK60P6L BLK/BLK 230Wp	Polycrystalline	230	7.10*	26
32	Siliken Modules	SLK60P6L BLK/WHT 225Wp	Polycrystalline	225	7.08*	25
33	Siliken Modules	SLK72P6L BLK/WHT 270Wp	Polycrystalline	270	7.07*	24
34	Siliken Modules	SLK72P6L SLV/WHT 270Wp	Polycrystalline	270	7.07*	24
35	Siliken Modules	SLK60P6L SLV/WHT 225Wp	Polycrystalline	225	7.03*	22
36	Siliken Modules	SLK60P6L BLK/BLK 225Wp	Polycrystalline	225	6.99*	21
37	Siliken Modules	SLK60P6L BLK/BLK 220Wp	Polycrystalline	220	6.93*	18
38	Siliken Modules	SLK60P6L BLK/WHT 220Wp	Polycrystalline	220	6.92*	18
39	Siliken Modules	SLK60P6L SLV/WHT 220Wp	Polycrystalline	220	6.89*	17
40	Siliken Modules	SLK60P6L BLK/WHT 215Wp	Polycrystalline	215	6.77*	13
41	Siliken Modules	SLK60P6L BLK/BLK 215Wp	Polycrystalline	215	6.76*	13
42	Siliken Modules	SLK60P6L SLV/WHT 215Wp	Polycrystalline	215	6.73*	12
43	Siliken Modules	SLK60P6L SLV/WHT 210Wp	Polycrystalline	210	6.63*	10
44	Siliken Modules	SLK60P6L BLK/WHT 210Wp	Polycrystalline	210	6.63*	10
45	Siliken Modules	SLK60P6L BLK/WHT 205Wp	Polycrystalline	205	6.45*	7
46	Siliken Modules	SLK60P6L SLV/WHT 205Wp	Polycrystalline	205	6.45*	7

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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.