Principal Solar Institute

A community for development and installation professionals in the solar industry

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 Manufacturing USA

Here are the PSI Ratings for modules from Siliken Manufacturing 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
1Siliken Manufacturing USASLK72P6L 315Wp BLK/WHTPolycrystalline3158.14*81
2Siliken Manufacturing USASLK72P6L 315Wp SLV/WHTPolycrystalline3158.14*81
3Siliken Manufacturing USASLK72P6L 310Wp SLV/WHTPolycrystalline3108.02*76
4Siliken Manufacturing USASLK72P6L 310Wp BLK/WHTPolycrystalline3108.02*76
5Siliken Manufacturing USASLK72P6L SLV/WHT 305WpPolycrystalline3057.94*73
6Siliken Manufacturing USASLK72P6L BLK/WHT 305WpPolycrystalline3057.94*73
7Siliken Manufacturing USASLK60P6L BLK/WHT 255WpPolycrystalline2557.89*70
8Siliken Manufacturing USASLK60P6L SLV/WHT 255WpPolycrystalline2557.89*70
9Siliken Manufacturing USASLK72P6L SLV/WHT 300WpPolycrystalline3007.82*67
10Siliken Manufacturing USASLK72P6L BLK/WHT 300WpPolycrystalline3007.82*67
11Siliken Manufacturing USASLK60P6L BLK/WHT 250WpPolycrystalline2507.79*65
12Siliken Manufacturing USASLK60P6L SLV/WHT 250WpPolycrystalline2507.79*65
13Siliken Manufacturing USASLK60P6L BLK/BLK 250WpPolycrystalline2507.74*62
14Siliken Manufacturing USASLK72P6L BLK/WHT 295WpPolycrystalline2957.69*59
15Siliken Manufacturing USASLK72P6L SLV/WHT 295WpPolycrystalline2957.69*59
16Siliken Manufacturing USASLK60P6L SLV/WHT 245WpPolycrystalline2457.62*55
17Siliken Manufacturing USASLK60P6L BLK/WHT 245WpPolycrystalline2457.62*55
18Siliken Manufacturing USASLK60P6L BLK/BLK 245WpPolycrystalline2457.57*52
19Siliken Manufacturing USASLK72P6L SLV/WHT 290WpPolycrystalline2907.56*52
20Siliken Manufacturing USASLK72P6L BLK/WHT 290WpPolycrystalline2907.56*52
21Siliken Manufacturing USASLK60P6L SLV/WHT 240WpPolycrystalline2407.48*47
22Siliken Manufacturing USASLK60P6L BLK/WHT 240WpPolycrystalline2407.48*47
23Siliken Manufacturing USASLK72P6L BLK/WHT 285WpPolycrystalline2857.43*43
24Siliken Manufacturing USASLK72P6L SLV/WHT 285WpPolycrystalline2857.43*43
25Siliken Manufacturing USASLK60P6L BLK/BLK 240WpPolycrystalline2407.43*43
26Siliken Manufacturing USASLK72P6L BLK/WHT 280WpPolycrystalline2807.35*38
27Siliken Manufacturing USASLK72P6L SLV/WHT 280WpPolycrystalline2807.35*38
28Siliken Manufacturing USASLK60P6L SLV/WHT 235WpPolycrystalline2357.32*37
29Siliken Manufacturing USASLK60P6L BLK/WHT 235WpPolycrystalline2357.32*37
30Siliken Manufacturing USASLK60P6L BLK/BLK 235WpPolycrystalline2357.27*34
31Siliken Manufacturing USASLK72P6L BLK/WHT 275WpPolycrystalline2757.21*31
32Siliken Manufacturing USASLK72P6L SLV/WHT 275WpPolycrystalline2757.21*31
33Siliken Manufacturing USASLK60P6L BLK/WHT 230WpPolycrystalline2307.15*28
34Siliken Manufacturing USASLK60P6L SLV/WHT 230WpPolycrystalline2307.15*28
35Siliken Manufacturing USASLK60P6L BLK/BLK 230WpPolycrystalline2307.10*26
36Siliken Manufacturing USASLK60P6L BLK/WHT 225WpPolycrystalline2257.08*25
37Siliken Manufacturing USASLK72P6L BLK/WHT 270WpPolycrystalline2707.07*24
38Siliken Manufacturing USASLK72P6L SLV/WHT 270WpPolycrystalline2707.07*24
39Siliken Manufacturing USASLK60P6L SLV/WHT 225WpPolycrystalline2257.03*22
40Siliken Manufacturing USASLK60P6L BLK/BLK 225WpPolycrystalline2256.99*21
41Siliken Manufacturing USASLK60P6L BLK/BLK 220WpPolycrystalline2206.93*18
42Siliken Manufacturing USASLK60P6L BLK/WHT 220WpPolycrystalline2206.92*18
43Siliken Manufacturing USASLK60P6L SLV/WHT 220WpPolycrystalline2206.89*17
44Siliken Manufacturing USASLK60P6L BLK/WHT 215WpPolycrystalline2156.77*13
45Siliken Manufacturing USASLK60P6L BLK/BLK 215WpPolycrystalline2156.76*13
46Siliken Manufacturing USASLK60P6L SLV/WHT 215WpPolycrystalline2156.73*12
47Siliken Manufacturing USASLK60P6L BLK/WHT 210WpPolycrystalline2106.63*10
48Siliken Manufacturing USASLK60P6L SLV/WHT 210WpPolycrystalline2106.63*10
49Siliken Manufacturing USASLK60P6L SLV/WHT 205WpPolycrystalline2056.45*7
50Siliken Manufacturing USASLK60P6L BLK/WHT 205WpPolycrystalline2056.45*7

* 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.