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 Sunny International Power

Here are the PSI Ratings for modules from Sunny International Power, 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
1Sunny International PowerSPM-200SB105Monocrystalline2008.13*81
2Sunny International PowerSPM-270PB206Polycrystalline2707.87*69
3Sunny International PowerSPM-220PB203Polycrystalline2207.81*66
4Sunny International PowerSPM-290PB205Polycrystalline2907.80*65
5Sunny International PowerSPM-190SB105Monocrystalline1907.75*63
6Sunny International PowerSPM-240PB204Polycrystalline2407.68*59
7Sunny International PowerSPM-260PB206Polycrystalline2607.58*53
8Sunny International PowerSPM-280PB205Polycrystalline2807.52*49
9Sunny International PowerSPM-210PB203Polycrystalline2107.47*46
10Sunny International PowerSPM-230PB204Polycrystalline2307.37*40
11Sunny International PowerSPM-180SB105Monocrystalline1807.33*38
12Sunny International PowerSPM-250PB206Polycrystalline2507.28*35
13Sunny International PowerSPM-270PB205Polycrystalline2707.26*34
14Sunny International PowerSPM-200PB203Polycrystalline2007.09*25
15Sunny International PowerSPM-220PB204Polycrystalline2207.05*23
16Sunny International PowerSPM-240PB206Polycrystalline2407.00*21
17Sunny International PowerSPM-260PB205Polycrystalline2606.97*20
18Sunny International PowerSPM-190PB203Polycrystalline1906.78*13
19Sunny International PowerSPM-230PB206Polycrystalline2306.71*12
20Sunny International PowerSPM-250PB205Polycrystalline2506.71*12
21Sunny International PowerSPM-210PB204Polycrystalline2106.70*12
22Sunny International PowerSPM-180PB203Polycrystalline1806.40*6
23Sunny International PowerSPM-200PB204Polycrystalline2006.38*6
24Sunny International PowerSPM-240PB205Polycrystalline2406.36*6

* 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.