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 SOLON

Here are the PSI Ratings for modules from SOLON, 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
1SOLONSOLquick Black XT 295Monocrystalline2958.20*83
2SOLONSOLON Black XT 295Monocrystalline2958.20*83
3SOLONSOLON Black 280/09 300Monocrystalline3008.14*81
4SOLONSOLON Black 245Monocrystalline2458.09*79
5SOLONSOLON Blue 240Polycrystalline2408.09*79
6SOLONSOLquick Black XT 290Monocrystalline2908.06*78
7SOLONSOLON Black XT 290Monocrystalline2908.06*78
8SOLONSOLON Black 280/09 295Monocrystalline2958.00*75
9SOLONSOLON Blue 220/01 240Polycrystalline2407.95*73
10SOLONSOLON Blue 270/09 290Polycrystalline2907.95*73
11SOLONSOLquick Blue XT 285Polycrystalline2857.93*72
12SOLONSOLON Blue XT 285Polycrystalline2857.93*72
13SOLONSOLON Black XT 285Monocrystalline2857.92*71
14SOLONSOLquick Black XT 285Monocrystalline2857.92*71
15SOLONSOLON Black 240Monocrystalline2407.92*72
16SOLONSOLON Blue 235Polycrystalline2357.91*71
17SOLONSOLON Black 230/01 240Monocrystalline2407.87*70
18SOLONSOLON Black 280/09 290Monocrystalline2907.86*69
19SOLONSOLON Corvus 240Monocrystalline2407.84*68
20SOLONSOLON Blue 270/09 285Polycrystalline2857.80*65
21SOLONSOLON Blue XT 280Polycrystalline2807.78*64
22SOLONSOLquick Blue XT 280Polycrystalline2807.78*64
23SOLONSOLON Blue 220/01 235Polycrystalline2357.77*64
24SOLONSOLquick Black XT 280Monocrystalline2807.77*64
25SOLONSOLON Black XT 280Monocrystalline2807.77*64
26SOLONSOLON Blue 230Polycrystalline2307.75*63
27SOLONSOLON Black 235Monocrystalline2357.74*62
28SOLONSOLON Black 280/09 280Monocrystalline2807.73*62
29SOLONSOLON Black 280/09 285Monocrystalline2857.72*61
30SOLONSOLON Black 230/01 235Monocrystalline2357.71*60
31SOLONSOLON Black 230/15 240Monocrystalline2407.71*60
32SOLONSOLON Corvus 235Monocrystalline2357.67*58
33SOLONSOLON Blue 270/09 280Polycrystalline2807.66*57
34SOLONSOLON Blue XT 275Polycrystalline2757.64*56
35SOLONSOLON Black XT 275Monocrystalline2757.62*55
36SOLONSOLON Blue 220/01 230Polycrystalline2307.61*55
37SOLONSOLON Black 280/09 275Monocrystalline2757.59*53
38SOLONSOLON Black 230Monocrystalline2307.58*53
39SOLONSOLON Blue 225Polycrystalline2257.57*52
40SOLONSOLON Black 230/01 230Monocrystalline2307.55*51
41SOLONSOLON Black 230/15 235Monocrystalline2357.55*51
42SOLONSOLON Blue 270/09 275Polycrystalline2757.53*49
43SOLONSOLON Corvus 230Monocrystalline2307.51*48
44SOLONSOLON Blue XT 270Polycrystalline2707.51*48
45SOLONSOLON Blue 220/01 225Polycrystalline2257.48*46
46SOLONSOLON Blue 270/09 270Polycrystalline2707.48*46
47SOLONSOLON Black 280/09 270Monocrystalline2707.45*45
48SOLONSOLON Black 225Monocrystalline2257.42*43
49SOLONSOLON Blue 220Polycrystalline2207.41*42
50SOLONSOLON Black 230/01 225Monocrystalline2257.38*40
51SOLONSOLON Black 230/15 230Monocrystalline2307.38*40
52SOLONSOLON Blue XT 265Polycrystalline2657.36*39
53SOLONSOLON Blue 270/09 265Polycrystalline2657.35*38
54SOLONSOLON Corvus 225Monocrystalline2257.34*38
55SOLONSOLON Blue 220/01 220Polycrystalline2207.32*37
56SOLONSOLON Black 280/09 265Monocrystalline2657.31*36
57SOLONSOLquick Blue XT-H 280Polycrystalline2807.25*33
58SOLONSOLON Black 230/15 225Monocrystalline2257.22*32
59SOLONSOLON Blue 270/09 260Polycrystalline2607.19*30
60SOLONSOLON Blue 220/01 215Polycrystalline2157.14*27
61SOLONSOLON Blue 270/09 255Polycrystalline2557.06*24
62SOLONSOLON Blue 270/09 250Polycrystalline2506.92*18

* 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.