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 Ningbo Ulica Solar Science & Technology

Here are the PSI Ratings for modules from Ningbo Ulica Solar Science & Technology, 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
1Ningbo Ulica Solar Science & TechnologyUL-295PPolycrystalline29511.11100
2Ningbo Ulica Solar Science & TechnologyUL-290PPolycrystalline29010.93100
3Ningbo Ulica Solar Science & TechnologyUL-285PPolycrystalline28510.74100
4Ningbo Ulica Solar Science & TechnologyUL-295DMonocrystalline29510.55100
5Ningbo Ulica Solar Science & TechnologyUL-290DMonocrystalline29010.38100
6Ningbo Ulica Solar Science & TechnologyUL-285DMonocrystalline28510.2199
7Ningbo Ulica Solar Science & TechnologyUL-280DMonocrystalline28010.0399
8Ningbo Ulica Solar Science & TechnologyUL-280PPolycrystalline28010.0199
9Ningbo Ulica Solar Science & TechnologyUL-275DMonocrystalline2759.8399
10Ningbo Ulica Solar Science & TechnologyUL-275PPolycrystalline2759.8299
11Ningbo Ulica Solar Science & TechnologyUL-250DMonocrystalline2508.7795
12Ningbo Ulica Solar Science & TechnologyUL-300DMonocrystalline3008.6193
13Ningbo Ulica Solar Science & TechnologyUL-245PPolycrystalline2458.5392
14Ningbo Ulica Solar Science & TechnologyUL-240PPolycrystalline2408.3688
15Ningbo Ulica Solar Science & TechnologyUL-190DMonocrystalline1908.3087
16Ningbo Ulica Solar Science & TechnologyUL-235PPolycrystalline2358.1883
17Ningbo Ulica Solar Science & TechnologyUL-250PPolycrystalline2508.11*80
18Ningbo Ulica Solar Science & TechnologyUL-245DMonocrystalline2458.01*76
19Ningbo Ulica Solar Science & TechnologyUL-230PPolycrystalline2308.0076
20Ningbo Ulica Solar Science & TechnologyUL-240DMonocrystalline2407.9874
21Ningbo Ulica Solar Science & TechnologyUL-260D-96Monocrystalline2607.7462
22Ningbo Ulica Solar Science & TechnologyUL-235DMonocrystalline2357.68*58
23Ningbo Ulica Solar Science & TechnologyUL-230DMonocrystalline2307.6557
24Ningbo Ulica Solar Science & TechnologyUL-185DMonocrystalline1857.6557
25Ningbo Ulica Solar Science & TechnologyUL-255D-96Monocrystalline2557.5752
26Ningbo Ulica Solar Science & TechnologyUL-180DMonocrystalline1807.4545
27Ningbo Ulica Solar Science & TechnologyUL-250D-96Monocrystalline2507.4242
28Ningbo Ulica Solar Science & TechnologyUL-245D-96Monocrystalline2456.8616
29Ningbo Ulica Solar Science & TechnologyUL-240D-96Monocrystalline2406.7012
30Ningbo Ulica Solar Science & Technology165(35) D UL811x1581Monocrystalline1656.37*6
31Ningbo Ulica Solar Science & Technology230(35) D UL997x1953Monocrystalline2305.89*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.