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 HC Solar Power

Here are the PSI Ratings for modules from HC Solar 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
1HC Solar PowerHCP195D-24Monocrystalline1957.84*67
2HC Solar PowerHCP190D-24Monocrystalline1907.64*56
3HC Solar PowerHCP240P-20Polycrystalline2407.49*47
4HC Solar PowerHCP280P-24Polycrystalline2807.36*39
5HC Solar PowerHCP235P-20Polycrystalline2357.33*37
6HC Solar PowerHCP180D-24Monocrystalline1807.28*35
7HC Solar PowerHCP275P-24Polycrystalline2757.23*32
8HC Solar PowerHCP230P-20Polycrystalline2307.18*29
9HC Solar PowerHCP270P-24Polycrystalline2707.09*25
10HC Solar PowerHCP175D-24Monocrystalline1757.09*25
11HC Solar PowerHCP265P-24Polycrystalline2656.97*20
12HC Solar PowerHCP260P-24Polycrystalline2606.81*14
13HC Solar PowerHCP255P-24Polycrystalline2556.68*11
14HC Solar PowerHCP250P-24Polycrystalline2506.55*8
15HC Solar PowerHCP245P-24Polycrystalline2456.42*6
16HC Solar PowerHCP185D-24Monocrystalline1856.26*5

* 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.