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.

Subscribe to our email list

Before using the PSI Ratings, you should subscribe to our email list to receive important updates from the Principal Solar Institute.

PSI Ratings – PV Solar Modules from Silevo

Here are the PSI Ratings for modules from Silevo, 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
1SilevoTriex U310 BlackMonocrystalline3109.84*99
2SilevoTriex U310Monocrystalline3109.84*99
3SilevoTriex R235Monocrystalline2359.79*99
4SilevoTriex R235 BlackMonocrystalline2359.79*99
5SilevoTriex U305Monocrystalline3059.68*99
6SilevoTriex U305 BlackMonocrystalline3059.68*99
7SilevoTriex H60-290Monocrystalline2909.64*98
8SilevoTriex R230 BlackMonocrystalline2309.52*98
9SilevoTriex U300Monocrystalline3009.52*98
10SilevoTriex U300 BlackMonocrystalline3009.52*98
11SilevoTriex R230Monocrystalline2309.52*98
12SilevoTriex U295Monocrystalline2959.40*98
13SilevoTriex U295 BlackMonocrystalline2959.40*98
14SilevoTriex H60-280Monocrystalline2809.28*97
15SilevoTriex U290Monocrystalline2909.26*97
16SilevoTriex U290 BlackMonocrystalline2909.26*97
17SilevoTriex U-295 SleekBlackMonocrystalline2959.19*97
18SilevoTriex R225Monocrystalline2259.16*97
19SilevoTriex R225 BlackMonocrystalline2259.16*97
20SilevoTriex R220Monocrystalline2209.16*97
21SilevoTriex R220 BlackMonocrystalline2209.16*97
22SilevoTriex R215 BlackMonocrystalline2159.04*97
23SilevoTriex R215Monocrystalline2159.04*97
24SilevoTriex U-290 SleekBlackMonocrystalline2909.02*97
25SilevoTriex H60-270Monocrystalline2708.96*96
26SilevoTriex U-285 SleekBlackMonocrystalline2858.90*96
27SilevoTriex U-280 SleekBlackMonocrystalline2808.78*95

* 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.