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 Perfect Source Technology

Here are the PSI Ratings for modules from Perfect Source 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
1Perfect Source TechnologyPST 212 3GM48Monocrystalline2128.24*85
2Perfect Source TechnologyPST 206 3GM48Monocrystalline2068.06*78
3Perfect Source TechnologyPST 236 3GM54Monocrystalline2368.03*77
4Perfect Source TechnologyPST 200 3GP48Polycrystalline2007.89*70
5Perfect Source TechnologyPST 200 3GM48Monocrystalline2007.88*70
6Perfect Source TechnologyPST 230 3GM54Monocrystalline2307.86*69
7Perfect Source TechnologyPST 254 3GP60Polycrystalline2547.73*61
8Perfect Source TechnologyPST 254 3GM60Monocrystalline2547.71*60
9Perfect Source TechnologyPST 224 3GM54Monocrystalline2247.71*60
10Perfect Source TechnologyPST 194 3GP48Polycrystalline1947.71*60
11Perfect Source TechnologyPST 194 3GM48Monocrystalline1947.69*59
12Perfect Source TechnologyPST 248 3GP60Polycrystalline2487.57*52
13Perfect Source TechnologyPST 248 3GM60Monocrystalline2487.56*51
14Perfect Source TechnologyPST 218 3GP54Polycrystalline2187.56*51
15Perfect Source TechnologyPST 218 3GM54Monocrystalline2187.53*50
16Perfect Source TechnologyPST 188 3GP48Polycrystalline1887.53*50
17Perfect Source TechnologyPST 188 3GM48Monocrystalline1887.51*49
18Perfect Source TechnologyPST 242 3GP60Polycrystalline2427.43*43
19Perfect Source TechnologyPST 242 3GM60Monocrystalline2427.41*42
20Perfect Source TechnologyPST 212 3GP54Polycrystalline2127.39*41
21Perfect Source TechnologyPST 212 3GM54Monocrystalline2127.37*40
22Perfect Source TechnologyPST 182 3GP48Polycrystalline1827.34*38
23Perfect Source TechnologyPST 182 3GM48Monocrystalline1827.33*37
24Perfect Source TechnologyPST 236GTPolycrystalline2367.30*36
25Perfect Source TechnologyPST 236 3GP60Polycrystalline2367.28*35
26Perfect Source TechnologyPST 236 3GM60Monocrystalline2367.26*34
27Perfect Source TechnologyPST 206 3GP54Polycrystalline2067.23*32
28Perfect Source TechnologyPST 206 3GM54Monocrystalline2067.21*31
29Perfect Source TechnologyPST 176 3GP48Polycrystalline1767.16*28
30Perfect Source TechnologyPST 230 3GP60Polycrystalline2307.14*27
31Perfect Source TechnologyPST 230GTPolycrystalline2307.13*27
32Perfect Source TechnologyPST 230 3GM60Monocrystalline2307.12*26
33Perfect Source TechnologyPST 200 3GP54Polycrystalline2007.06*24
34Perfect Source TechnologyPST 170 3GP48Polycrystalline1706.98*20
35Perfect Source TechnologyPST 224 3GP60Polycrystalline2246.98*20
36Perfect Source TechnologyPST 224GTPolycrystalline2246.97*20
37Perfect Source TechnologyPST 224 3GM60Monocrystalline2246.96*20
38Perfect Source TechnologyPST 194 3GP54Polycrystalline1946.90*17
39Perfect Source TechnologyPST 218 3GP60Polycrystalline2186.84*16
40Perfect Source TechnologyPST 218GTPolycrystalline2186.79*14
41Perfect Source TechnologyPST 212GTPolycrystalline2126.59*9

* 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.