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 Sonali Energees USA

Here are the PSI Ratings for modules from Sonali Energees 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
1Sonali Energees USASS 1400 PPolycrystalline1407.45*45
2Sonali Energees USASS2300-240WMonocrystalline2407.35*38
3Sonali Energees USASS 2400 PPolycrystalline2407.34*38
4Sonali Energees USASS2100-220WMonocrystalline2207.29*35
5Sonali Energees USASS2500-250WMonocrystalline2507.22*31
6Sonali Energees USASS2300-235WMonocrystalline2357.20*31
7Sonali Energees USASS2100-215WMonocrystalline2157.12*27
8Sonali Energees USASS1750-180WMonocrystalline1807.10*26
9Sonali Energees USASS 2000 PPolycrystalline2007.08*25
10Sonali Energees USASS2300-230WMonocrystalline2307.05*24
11Sonali Energees USASS 2300 PPolycrystalline2306.99*21
12Sonali Energees USASS2100-210WMonocrystalline2106.96*19
13Sonali Energees USASS1750-175WMonocrystalline1756.90*17
14Sonali Energees USASS2800-285WMonocrystalline2856.86*16
15Sonali Energees USASS 1300 PPolycrystalline1306.79*14
16Sonali Energees USASS 2200 PPolycrystalline2206.73*12
17Sonali Energees USASS2800-280WMonocrystalline2806.72*12
18Sonali Energees USASS 1900 PPolycrystalline1906.71*12
19Sonali Energees USASS2800-275WMonocrystalline2756.60*9
20Sonali Energees USASS1750-170WMonocrystalline1706.56*9
21Sonali Energees USASS 2100 PPolycrystalline2106.51*8
22Sonali Energees USASS 1250 PPolycrystalline1256.33*5
23Sonali Energees USASS 1800 PPolycrystalline1806.14*4
24Sonali Energees USASS 1200 PPolycrystalline1206.07*3
25Sonali Energees USASS 1750 PPolycrystalline1756.05*3

* 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.