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 Canadian Solar

Here are the PSI Ratings for modules from Canadian Solar, 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
1Canadian SolarCS6P-285MMonocrystalline2859.44*98
2Canadian SolarCS6P-285MXMonocrystalline2859.44*98
3Canadian SolarCS6X-310PPolycrystalline3109.3698
4Canadian SolarCS6P-265MMMonocrystalline2659.2997
5Canadian SolarCS6P-280MXMonocrystalline2809.29*97
6Canadian SolarCS6P-280MMonocrystalline2809.29*97
7Canadian SolarCS6X-305PPolycrystalline3059.2197
8Canadian SolarCS6P-260MMMonocrystalline2609.1497
9Canadian SolarCS6P-275MMonocrystalline2759.14*97
10Canadian SolarCS6P-275MXMonocrystalline2759.14*97
11Canadian SolarCS6X-300PPolycrystalline3009.0597
12Canadian SolarCS6P-250PXPolycrystalline2509.0397
13Canadian SolarCS6P-250PPolycrystalline2509.0397
14Canadian SolarCS6K-285MMonocrystalline2859.02*97
15Canadian SolarCS6X-300MMonocrystalline3008.9896
16Canadian SolarCS6P-270MMonocrystalline2708.95*96
17Canadian SolarCS6P-270MXMonocrystalline2708.95*96
18Canadian SolarCS6P-255MMMonocrystalline2558.9496
19Canadian SolarCS6A-210MMMonocrystalline2108.9496
20Canadian SolarCS6P-265PXPolycrystalline2658.93*96
21Canadian SolarCS6P-265PPolycrystalline2658.93*96
22Canadian SolarCS6X-295PPolycrystalline2958.8996
23Canadian SolarCS6P-255PMPolycrystalline2558.8896
24Canadian SolarCS6K-280MMonocrystalline2808.87*96
25Canadian SolarCS6X-315PPolycrystalline3158.86*95
26Canadian SolarCS6P-245PPolycrystalline2458.8695
27Canadian SolarCS6P-245PXPolycrystalline2458.8695
28Canadian SolarCS6X-295MMonocrystalline2958.8495
29Canadian SolarCS6P-250MMonocrystalline2508.7895
30Canadian SolarCS6P-260PPolycrystalline2608.77*95
31Canadian SolarCS6P-260PXPolycrystalline2608.77*95
32Canadian SolarCS6P-260P-EAPolycrystalline2608.77*95
33Canadian SolarCS6P-250MMMonocrystalline2508.7795
34Canadian SolarCS6P-250PTPolycrystalline2508.7595
35Canadian SolarCS6X-290PPolycrystalline2908.7594
36Canadian SolarCS6K-275MMonocrystalline2758.74*94
37Canadian SolarCS6P-250MXMonocrystalline2508.7394
38Canadian SolarCS6A-205MMMonocrystalline2058.7394
39Canadian SolarCS6P-250PMPolycrystalline2508.7194
40Canadian SolarCS6X-290MMonocrystalline2908.6994
41Canadian SolarCS6P-265MMonocrystalline2658.69*94
42Canadian SolarCS6P-265MXMonocrystalline2658.64*93
43Canadian SolarCS6X-310MMonocrystalline3108.63*93
44Canadian SolarCS6P-245MMonocrystalline2458.6293
45Canadian SolarCS6P-245MMMonocrystalline2458.6193
46Canadian SolarCS6X-285PPolycrystalline2858.6092
47Canadian SolarCS6P-245PTPolycrystalline2458.5992
48Canadian SolarCS5A-200MMonocrystalline2008.5792
49Canadian SolarCS6P-245MXMonocrystalline2458.5792
50Canadian SolarCS6P-255PPolycrystalline2558.57*92
51Canadian SolarCS6P-255PXPolycrystalline2558.57*92
52Canadian SolarCS6P-255P-EAPolycrystalline2558.57*92
53Canadian SolarCS6P-245PMPolycrystalline2458.5592
54Canadian SolarCS6K-270MMonocrystalline2708.55*92
55Canadian SolarCS6K-265PPolycrystalline2658.53*92
56Canadian SolarCS6X-285MMonocrystalline2858.5291
57Canadian SolarCS6K-265P-PGPolycrystalline2658.51*91
58Canadian SolarCS5P-255MMonocrystalline2558.5191
59Canadian SolarCS6P-260MMonocrystalline2608.51*91
60Canadian SolarCS6X-305MMonocrystalline3058.50*91
61Canadian SolarCS6P-240PXPolycrystalline2408.4991
62Canadian SolarCS6P-240PPolycrystalline2408.4991
63Canadian SolarCS6A-200MMMonocrystalline2008.4991
64Canadian SolarCS6P-260M-EAMonocrystalline2608.48*91
65Canadian SolarCS6P-240MMonocrystalline2408.4891
66Canadian SolarCS6P-260MXMonocrystalline2608.45*90
67Canadian SolarCS6K-265MMonocrystalline2658.44*90
68Canadian SolarCS6P-240PTPolycrystalline2408.4289
69Canadian SolarCS6P-250P-EAPolycrystalline2508.41*89
70Canadian SolarCS6K-260PPolycrystalline2608.38*88
71Canadian SolarCS6X-280MMonocrystalline2808.3889
72Canadian SolarCS6K-265P-FGPolycrystalline2658.37*88
73Canadian SolarCS6P-240PMPolycrystalline2408.3788
74Canadian SolarCS5P-250MMonocrystalline2508.3688
75Canadian SolarCS6K-260P-PGPolycrystalline2608.35*88
76Canadian SolarCS5A-195MXMonocrystalline1958.3588
77Canadian SolarCS5A-195MMonocrystalline1958.3588
78Canadian SolarCS6P-255M-EAMonocrystalline2558.33*87
79Canadian SolarCS6P-255MMonocrystalline2558.33*87
80Canadian SolarCS6P-235PPolycrystalline2358.3287
81Canadian SolarCS6P-235MMonocrystalline2358.3287
82Canadian SolarCS6P-240MXMonocrystalline2408.2986
83Canadian SolarCS6P-255MXMonocrystalline2558.27*86
84Canadian SolarCS6A-195MMMonocrystalline1958.2786
85Canadian SolarCS6P-245P-EAPolycrystalline2458.26*85
86Canadian SolarCS6P-235PTPolycrystalline2358.2585
87Canadian SolarCS6K-260MMonocrystalline2608.25*85
88Canadian SolarCS5P-245MMonocrystalline2458.2485
89Canadian SolarCS6K-260P-FGPolycrystalline2608.22*84
90Canadian SolarCS6P-235PMPolycrystalline2358.2184
91Canadian SolarCS6K-255P-PGPolycrystalline2558.19*83
92Canadian SolarCS6K-255PPolycrystalline2558.19*83
93Canadian SolarCS6P-235PXPolycrystalline2358.1782
94Canadian SolarCS6P-250M-EAMonocrystalline2508.16*82
95Canadian SolarCS6P-230MMonocrystalline2308.1481
96Canadian SolarCS6P-235MXMonocrystalline2358.1381
97Canadian SolarCS5A-190MXMonocrystalline1908.1280
98Canadian SolarCS5A-190MMonocrystalline1908.1280
99Canadian SolarCS6K-255MMonocrystalline2558.08*79
100Canadian SolarCS6X-280PPolycrystalline2808.0879
101Canadian SolarCS6P-230PTPolycrystalline2308.0779
102Canadian SolarCS6K-245PPolycrystalline2458.07*79
103Canadian SolarCS6A-190MMMonocrystalline1908.0678
104Canadian SolarCS6P-230PEPolycrystalline2308.0577
105Canadian SolarCS6K-255P-FGPolycrystalline2558.05*78
106Canadian SolarCS6K-250PPolycrystalline2508.04*77
107Canadian SolarCS6X-275MMonocrystalline2758.0377
108Canadian SolarCS6K-250P-PGPolycrystalline2508.02*77
109Canadian SolarCS6P-245M-EAMonocrystalline2458.01*76
110Canadian SolarCS6P-230PXPolycrystalline2307.9774
111Canadian SolarCS6P-230PPolycrystalline2307.9774
112Canadian SolarCS6P-230MXMonocrystalline2307.9573
113Canadian SolarCS6X-275PPolycrystalline2757.9372
114Canadian SolarCS6K-250MMonocrystalline2507.93*72
115Canadian SolarCS5A-185MXMonocrystalline1857.9372
116Canadian SolarCS5A-185MMonocrystalline1857.9372
117Canadian SolarCS6K-250P-FGPolycrystalline2507.89*70
118Canadian SolarCS6X-270MMonocrystalline2707.8870
119Canadian SolarCS6K-245P-PGPolycrystalline2457.87*69
120Canadian SolarCS5P-240PPolycrystalline2407.8568
121Canadian SolarCS6P-225PEPolycrystalline2257.8568
122Canadian SolarCS6P-225PXPolycrystalline2257.8166
123Canadian SolarCS6P-225PPolycrystalline2257.8166
124Canadian SolarCS6P-220MMonocrystalline2207.8066
125Canadian SolarCS5P-240MMonocrystalline2407.7864
126Canadian SolarCS6X-270PPolycrystalline2707.7764
127Canadian SolarCS6A-190PPolycrystalline1907.7462
128Canadian SolarCS6K-245P-FGPolycrystalline2457.74*62
129Canadian SolarCS6X-265MMonocrystalline2657.7362
130Canadian SolarCS5P-235PPolycrystalline2357.6858
131Canadian SolarCS6P-220PEPolycrystalline2207.6658
132Canadian SolarCS6P-220PXPolycrystalline2207.6557
133Canadian SolarCS6P-220PPolycrystalline2207.6557
134Canadian SolarCS5A-180MXMonocrystalline1807.6456
135Canadian SolarCS5A-180MMonocrystalline1807.6456
136Canadian SolarCS6P-215MMonocrystalline2157.6356
137Canadian SolarCS6X-265PPolycrystalline2657.6255
138Canadian SolarCS6X-260MMonocrystalline2607.5953
139Canadian SolarCS6A-185PPolycrystalline1857.5450
140Canadian SolarCS6C-145PPolycrystalline1457.53*49
141Canadian SolarCS5P-230PPolycrystalline2307.5249
142Canadian SolarCS5P-235MMonocrystalline2357.5149
143Canadian SolarCS6X-260PPolycrystalline2607.4847
144Canadian SolarCS6P-215PXPolycrystalline2157.4847
145Canadian SolarCS6P-215PPolycrystalline2157.4847
146Canadian SolarCS6P-215PEPolycrystalline2157.4847
147Canadian SolarCS6A-175PPolycrystalline1757.4746
148Canadian SolarCS6P-210MMonocrystalline2107.4645
149Canadian SolarCS6X-255MMonocrystalline2557.4545
150Canadian SolarCS6A-180PPolycrystalline1807.4142
151Canadian SolarCS5C-90MMonocrystalline907.3941
152Canadian SolarCS5A-175MXMonocrystalline1757.3740
153Canadian SolarCS5A-175MMonocrystalline1757.3740
154Canadian SolarCS5P-225PPolycrystalline2257.3538
155Canadian SolarCS5P-230MMonocrystalline2307.3438
156Canadian SolarCS6X-255PPolycrystalline2557.3438
157Canadian SolarCS6P-210PEPolycrystalline2107.3338
158Canadian SolarCS6P-210PXPolycrystalline2107.3237
159Canadian SolarCS6P-210PPolycrystalline2107.3237
160Canadian SolarCS6C-140PPolycrystalline1407.30*36
161Canadian SolarCS6P-205MMonocrystalline2057.2835
162Canadian SolarCS5P-220PPolycrystalline2207.2131
163Canadian SolarCS5P-225MMonocrystalline2257.1829
164Canadian SolarCS5A-170MMonocrystalline1707.1729
165Canadian SolarCS5A-170MXMonocrystalline1707.1729
166Canadian SolarCS6P-205PXPolycrystalline2057.1628
167Canadian SolarCS6P-205PPolycrystalline2057.1628
168Canadian SolarCS5P-220MMonocrystalline2207.0322
169Canadian SolarCS6P-205PEPolycrystalline2057.0222
170Canadian SolarCS6P-200PPolycrystalline2006.9820
171Canadian SolarCS6P-200PXPolycrystalline2006.9820
172Canadian SolarCS5A-165MMonocrystalline1656.9619
173Canadian SolarCS5A-165MXMonocrystalline1656.9619
174Canadian SolarCS5P-215MMonocrystalline2156.9519
175Canadian SolarCS6A-170PPolycrystalline1706.9218
176Canadian SolarCS5P-210MMonocrystalline2106.8014
177Canadian SolarCS5A-160MMonocrystalline1606.7613
178Canadian SolarCS6A-165PPolycrystalline1656.7112
179Canadian SolarCS5P-205MMonocrystalline2056.6310
180Canadian SolarCS6P-200PEPolycrystalline2006.619
181Canadian SolarCS5A-160MXMonocrystalline1606.599
182Canadian SolarCS6A-160PEPolycrystalline1606.589
183Canadian SolarCS5C-80MMonocrystalline806.579
184Canadian SolarCS5P-200MMonocrystalline2006.477
185Canadian SolarCS6P-195PEPolycrystalline1956.426
186Canadian SolarCS6A-155PEPolycrystalline1556.386
187Canadian SolarCS5A-150MMonocrystalline1506.366
188Canadian SolarCS6A-160PPolycrystalline1606.366
189Canadian SolarCS6P-195PPolycrystalline1956.356
190Canadian SolarCS5P-195MMonocrystalline1956.305
191Canadian SolarCS6P-190PEPolycrystalline1906.275
192Canadian SolarCS6P-190PPolycrystalline1906.194
193Canadian SolarCS6A-150PEPolycrystalline1506.174
194Canadian SolarCS6A-155PPolycrystalline1556.164
195Canadian SolarCS6P-185PEPolycrystalline1856.154
196Canadian SolarCS5A-155MMonocrystalline1556.094
197Canadian SolarCS6P-185PPolycrystalline1856.043
198Canadian SolarCS6A-150PPolycrystalline1505.983
199Canadian SolarCS6P-180PEPolycrystalline1805.973
200Canadian SolarCS6P-180PPolycrystalline1805.953
201Canadian SolarCS6P-175PEPolycrystalline1755.813
202Canadian SolarCS6P-170PEPolycrystalline1705.632
203Canadian SolarCS6P-165PEPolycrystalline1655.472
204Canadian SolarCS6P-160PEPolycrystalline1605.292
205Canadian SolarCS5T-150MMonocrystalline1505.172
206Canadian SolarCS5T-145MMonocrystalline1455.002
207Canadian SolarCS5T-140MMonocrystalline1404.871
208Canadian SolarCS5T-135MMonocrystalline1354.701
209Canadian SolarCS5T-130MMonocrystalline1304.541

* 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.