Principal Solar Institute

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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 Clean Source & Energy

Here are the PSI Ratings for modules from Clean Source & Energy, 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
1Clean Source & EnergyCSE280P-3Polycrystalline2807.42*43
2Clean Source & EnergyCSE235M-ASMonocrystalline2357.39*41
3Clean Source & EnergyCSE185M-1Monocrystalline1857.31*36
4Clean Source & EnergyCSE185M-2Monocrystalline1857.29*35
5Clean Source & EnergyCSE275P-3Polycrystalline2757.28*35
6Clean Source & EnergyCSE180M-3Monocrystalline1807.20*30
7Clean Source & EnergyCSE230P-3Polycrystalline2307.19*30
8Clean Source & EnergyCSE230P-ASPolycrystalline2307.19*30
9Clean Source & EnergyCSE205P-3Polycrystalline2057.17*29
10Clean Source & EnergyCSE270P-3Polycrystalline2707.15*28
11Clean Source & EnergyCSE240M-2Monocrystalline2407.11*26
12Clean Source & EnergyCSE180M-1Monocrystalline1807.11*26
13Clean Source & EnergyCSE225M-ASMonocrystalline2257.07*24
14Clean Source & EnergyCSE180M-2Monocrystalline1807.07*24
15Clean Source & EnergyCSE225P-3Polycrystalline2257.03*22
16Clean Source & EnergyCSE235M-2Monocrystalline2357.01*22
17Clean Source & EnergyCSE200P-3Polycrystalline2006.99*21
18Clean Source & EnergyCSE220P-1Polycrystalline2206.97*20
19Clean Source & EnergyCSE230P-2Polycrystalline2306.95*19
20Clean Source & EnergyCSE175M-1Monocrystalline1756.91*18
21Clean Source & EnergyCSE230M-2Monocrystalline2306.89*17
22Clean Source & EnergyCSE220P-ASPolycrystalline2206.89*17
23Clean Source & EnergyCSE220P-3Polycrystalline2206.87*16
24Clean Source & EnergyCSE175M-2Monocrystalline1756.87*17
25Clean Source & EnergyCSE215P-1Polycrystalline2156.83*15
26Clean Source & EnergyCSE195P-3Polycrystalline1956.82*15
27Clean Source & EnergyCSE225P-2Polycrystalline2256.80*14
28Clean Source & EnergyCSE225M-2Monocrystalline2256.74*13
29Clean Source & EnergyCSE255P-3Polycrystalline2556.73*12
30Clean Source & EnergyCSE170M-2Monocrystalline1706.71*12
31Clean Source & EnergyCSE220P-2Polycrystalline2206.65*10
32Clean Source & EnergyCSE190P-3Polycrystalline1906.65*10
33Clean Source & EnergyCSE210P-1Polycrystalline2106.65*10
34Clean Source & EnergyCSE170M-1Monocrystalline1706.62*10
35Clean Source & EnergyCSE250P-3Polycrystalline2506.60*9
36Clean Source & EnergyCSE220M-2Monocrystalline2206.59*9
37Clean Source & EnergyCSE165M-2Monocrystalline1656.53*8
38Clean Source & EnergyCSE205P-1Polycrystalline2056.49*7
39Clean Source & EnergyCSE125M-1Monocrystalline1256.49*7
40Clean Source & EnergyCSE215M-2Monocrystalline2156.48*7
41Clean Source & EnergyCSE215P-2Polycrystalline2156.48*7
42Clean Source & EnergyCSE165M-1Monocrystalline1656.44*7
43Clean Source & EnergyCSE210M-2Monocrystalline2106.34*5
44Clean Source & EnergyCSE210P-2Polycrystalline2106.34*5
45Clean Source & EnergyCSE200P-1Polycrystalline2006.34*6
46Clean Source & EnergyCSE160M-2Monocrystalline1606.23*4
47Clean Source & EnergyCSE160M-1Monocrystalline1606.23*5
48Clean Source & EnergyCSE120M-1Monocrystalline1206.21*4
49Clean Source & EnergyCSE205P-2Polycrystalline2056.18*4
50Clean Source & EnergyCSE205M-2Monocrystalline2056.18*4
51Clean Source & EnergyCSE200P-2Polycrystalline2006.04*3
52Clean Source & EnergyCSE155M-2Monocrystalline1556.04*3
53Clean Source & EnergyCSE200M-2Monocrystalline2006.04*3
54Clean Source & EnergyCSE115M-1Monocrystalline1155.95*3
55Clean Source & EnergyCSE150M-2Monocrystalline1505.87*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.