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 Luxor Solar

Here are the PSI Ratings for modules from Luxor Solar, 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
1Luxor SolarLX-260M/156-60+Monocrystalline2608.07*79
2Luxor SolarLX-255M/156-60+Monocrystalline2557.91*71
3Luxor SolarLX-300P/156-72+Polycrystalline3007.88*70
4Luxor SolarLX-300M/156-72+Monocrystalline3007.86*69
5Luxor SolarLX-250M/156-60+Monocrystalline2507.76*63
6Luxor SolarLX-195M/125-72+Monocrystalline1957.72*61
7Luxor SolarLX-290P/156-72+Polycrystalline2907.62*55
8Luxor SolarLX-245M/156-60+Monocrystalline2457.60*54
9Luxor SolarLX-290M/156-72+Monocrystalline2907.59*54
10Luxor SolarLX-190M/125-72+Monocrystalline1907.51*48
11Luxor SolarLX-240M/156-60+Monocrystalline2407.47*46
12Luxor SolarLX-240P/156-60+Polycrystalline2407.45*45
13Luxor SolarSolo Line 145MMonocrystalline1457.37*39
14Luxor SolarLX-280P/156-72+Polycrystalline2807.36*39
15Luxor SolarLX-280M/156-72+Monocrystalline2807.34*38
16Luxor SolarLX-235M/156-60+Monocrystalline2357.33*37
17Luxor SolarSolo Line 145PPolycrystalline1457.32*37
18Luxor SolarLX-185M/125-72+Monocrystalline1857.31*37
19Luxor SolarLX-235P/156-60+Polycrystalline2357.31*36
20Luxor SolarLX-275M/156-72+Monocrystalline2757.25*33
21Luxor SolarLX-275P/156-72+Polycrystalline2757.23*32
22Luxor SolarLX-230M/156-60+Monocrystalline2307.19*30
23Luxor SolarLX-230P/156-60+Polycrystalline2307.17*29
24Luxor SolarLX-180M/125-72+Monocrystalline1807.13*27
25Luxor SolarLX-270M/156-72+Monocrystalline2707.12*26
26Luxor SolarSolo Line 140MMonocrystalline1407.11*26
27Luxor SolarLX-270P/156-72+Polycrystalline2707.10*26
28Luxor SolarSolo Line 140PPolycrystalline1407.07*24
29Luxor SolarLX-225P/156-60+Polycrystalline2257.00*21
30Luxor SolarLX-265M/156-72+Monocrystalline2656.99*21
31Luxor SolarLX-265P/156-72+Polycrystalline2656.97*20
32Luxor SolarLX-260M/156-72+Monocrystalline2606.86*16
33Luxor SolarLX-220P/156-60+Polycrystalline2206.85*16
34Luxor SolarLX-260P/156-72+Polycrystalline2606.84*16

* 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.