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 Phono Solar Technology

Here are the PSI Ratings for modules from Phono Solar 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
1Phono Solar TechnologyPS-315P-24/TTPolycrystalline31510.23*99
2Phono Solar TechnologyPS-310P-24/TTPolycrystalline31010.06*99
3Phono Solar TechnologyPS-305P-24/TTPolycrystalline3059.91*99
4Phono Solar TechnologyPS-300P-24/TTPolycrystalline3009.74*99
5Phono Solar TechnologyPS-295P-24/TTPolycrystalline2959.58*98
6Phono Solar TechnologyPS 335M-24/TVMonocrystalline3358.66*93
7Phono Solar TechnologyPS-280M-20/UTMonocrystalline2808.65*93
8Phono Solar TechnologyPS 280M-20/UVMonocrystalline2808.62*93
9Phono Solar TechnologyPS 330M-24/TVMonocrystalline3308.54*92
10Phono Solar TechnologyPS-330M-24/TTMonocrystalline3308.52*91
11Phono Solar TechnologyPS-275M-20/UTMonocrystalline2758.50*91
12Phono Solar TechnologyPS 275M-20/UVMonocrystalline2758.46*90
13Phono Solar TechnologyPS320PB-24/TPolycrystalline3208.40*89
14Phono Solar TechnologyPS 325M-24/TVMonocrystalline3258.40*89
15Phono Solar TechnologyPS-325M-24/TTMonocrystalline3258.40*89
16Phono Solar TechnologyPS320MB-24/TMonocrystalline3208.40*89
17Phono Solar TechnologyPS-270M-20/UTMonocrystalline2708.35*88
18Phono Solar TechnologyPS 270M-20/UVMonocrystalline2708.30*86
19Phono Solar TechnologyPS 320M-24/TVMonocrystalline3208.28*86
20Phono Solar TechnologyPS315PB-24/TPolycrystalline3158.28*86
21Phono Solar TechnologyPS315P-24/TPolycrystalline3158.28*86
22Phono Solar TechnologyPS 325P-24/TVPolycrystalline3258.27*86
23Phono Solar TechnologyPS315MB-24/TMonocrystalline3158.27*86
24Phono Solar TechnologyPS315M-24/TMonocrystalline3158.27*86
25Phono Solar TechnologyPS-320M-24/TTMonocrystalline3208.27*86
26Phono Solar TechnologyPS-265M-20/UTMonocrystalline2658.20*83
27Phono Solar TechnologyPS 270P-20/UVPolycrystalline2708.20*83
28Phono Solar TechnologyPS260PB-20/UPolycrystalline2608.16*82
29Phono Solar TechnologyPS260P-20/U-ACPolycrystalline2608.16*82
30Phono Solar TechnologyPS260P-20/UPolycrystalline2608.16*82
31Phono Solar TechnologyPS-260M-20/UTMonocrystalline2608.16*82
32Phono Solar TechnologyPS310PB-24/TPolycrystalline3108.15*81
33Phono Solar TechnologyPS310MB-24/TMonocrystalline3108.15*81
34Phono Solar TechnologyPS 315M-24/TVMonocrystalline3158.15*82
35Phono Solar TechnologyPS 320P-24/TVPolycrystalline3208.15*82
36Phono Solar TechnologyPS310P-24/TPolycrystalline3108.15*82
37Phono Solar TechnologyPS 265M-20/UVMonocrystalline2658.15*82
38Phono Solar TechnologyPS310M-24/TMonocrystalline3108.14*81
39Phono Solar TechnologyPS260MB-20/UMonocrystalline2608.14*81
40Phono Solar TechnologyPS-315M-24/TTMonocrystalline3158.13*81
41Phono Solar TechnologyPS260M-20/U-ACMonocrystalline2608.12*80
42Phono Solar TechnologyPS260M-20/UMonocrystalline2608.12*80
43Phono Solar TechnologyPS 265P-20/UVPolycrystalline2658.05*77
44Phono Solar TechnologyPS-240M-18/VTMonocrystalline2408.03*77
45Phono Solar TechnologyPS 310M-24/TVMonocrystalline3108.02*76
46Phono Solar TechnologyPS-260P-20/UTPolycrystalline2608.02*77
47Phono Solar TechnologyPS305P-24/TPolycrystalline3058.02*76
48Phono Solar TechnologyPS 315P-24/TVPolycrystalline3158.02*76
49Phono Solar TechnologyPS305MB-24/TMonocrystalline3058.01*76
50Phono Solar TechnologyPS305PB-24/TPolycrystalline3058.01*76
51Phono Solar TechnologyPS-310M-24/TTMonocrystalline3108.01*76
52Phono Solar TechnologyPS 260M-20/UVMonocrystalline2608.00*75
53Phono Solar TechnologyPS305M-24/TMonocrystalline3058.00*75
54Phono Solar TechnologyPS-255M-20/UTMonocrystalline2558.00*76
55Phono Solar TechnologyPS255MB-20/UMonocrystalline2557.99*75
56Phono Solar TechnologyPS255PB-20/UPolycrystalline2557.99*75
57Phono Solar TechnologyPS255P-20/UPolycrystalline2557.98*75
58Phono Solar TechnologyPS255P-20/U-ACPolycrystalline2557.98*75
59Phono Solar TechnologyPS255M-20/UMonocrystalline2557.96*73
60Phono Solar TechnologyPS255M-20/U-ACMonocrystalline2557.96*73
61Phono Solar TechnologyPS 260P-20/UVPolycrystalline2607.95*73
62Phono Solar TechnologyPS200M-24/FMonocrystalline2007.93*72
63Phono Solar TechnologyPS 310P-24/TVPolycrystalline3107.90*70
64Phono Solar TechnologyPS-250M-20/UTMonocrystalline2507.90*71
65Phono Solar TechnologyPS-250M-24/TTMonocrystalline2507.90*71
66Phono Solar TechnologyPS-305M-24/TTMonocrystalline3057.88*70
67Phono Solar TechnologyPS300P-24/TPolycrystalline3007.88*70
68Phono Solar TechnologyPS300MB-24/TMonocrystalline3007.88*70
69Phono Solar TechnologyPS300PB-24/TPolycrystalline3007.88*70
70Phono Solar TechnologyPS300M-24/TMonocrystalline3007.87*69
71Phono Solar TechnologyPS-255P-20/UTPolycrystalline2557.87*69
72Phono Solar TechnologyPS 255P-20/UVPolycrystalline2557.87*69
73Phono Solar TechnologyPS250M-20/UMonocrystalline2507.84*67
74Phono Solar TechnologyPS250M-20/U-ACMonocrystalline2507.84*67
75Phono Solar TechnologyPS250PB-20/UPolycrystalline2507.83*67
76Phono Solar TechnologyPS250MB-20/UMonocrystalline2507.83*67
77Phono Solar TechnologyPS250P-20/U-ACPolycrystalline2507.82*67
78Phono Solar TechnologyPS250P-20/UPolycrystalline2507.82*67
79Phono Solar TechnologyPS 305P-24/TVPolycrystalline3057.78*64
80Phono Solar TechnologyPS295MB-24/TMonocrystalline2957.76*63
81Phono Solar TechnologyPS295P-24/TPolycrystalline2957.75*63
82Phono Solar TechnologyPS295PB-24/TPolycrystalline2957.74*62
83Phono Solar TechnologyPS295M-24/TMonocrystalline2957.74*62
84Phono Solar TechnologyPS-245M-20/UTMonocrystalline2457.74*62
85Phono Solar TechnologyPS195M-24/FMonocrystalline1957.72*61
86Phono Solar TechnologyPS-250P-20/UTPolycrystalline2507.71*60
87Phono Solar TechnologyPS190M-24/FMonocrystalline1907.71*60
88Phono Solar TechnologyPS250MMonocrystalline2507.71*60
89Phono Solar TechnologyPS 250P-20/UVPolycrystalline2507.69*59
90Phono Solar TechnologyPS245M-20/UMonocrystalline2457.68*59
91Phono Solar TechnologyPS245M-20/U-ACMonocrystalline2457.68*59
92Phono Solar TechnologyPS240P-20/UPolycrystalline2407.67*58
93Phono Solar TechnologyPS245MB-20/UMonocrystalline2457.67*58
94Phono Solar TechnologyPS240P-20/U-ACPolycrystalline2407.67*58
95Phono Solar TechnologyPS245P-20/U-ACPolycrystalline2457.66*57
96Phono Solar TechnologyPS245P-20/UPolycrystalline2457.66*57
97Phono Solar TechnologyPS245PB-20/UPolycrystalline2457.66*57
98Phono Solar TechnologyPS-300M-24/TTMonocrystalline3007.66*58
99Phono Solar TechnologyPS240M-20/U-ACMonocrystalline2407.63*56
100Phono Solar TechnologyPS240M-20/UMonocrystalline2407.63*56
101Phono Solar TechnologyPS290P-24/TPolycrystalline2907.62*55
102Phono Solar TechnologyPS290MB-24/TMonocrystalline2907.61*54
103Phono Solar TechnologyPS290M-24/TMonocrystalline2907.61*55
104Phono Solar TechnologyPS-240M-20/UTMonocrystalline2407.59*53
105Phono Solar TechnologyPS290PB-24/TPolycrystalline2907.59*53
106Phono Solar TechnologyPS-285M-24/TTMonocrystalline2857.57*52
107Phono Solar TechnologyPS-245P-20/UTPolycrystalline2457.56*51
108Phono Solar TechnologyPS-225M-18/VTMonocrystalline2257.56*51
109Phono Solar TechnologyPS240PB-20/UPolycrystalline2407.56*51
110Phono Solar TechnologyPS 300P-24/TVPolycrystalline3007.55*51
111Phono Solar TechnologyPS245MMonocrystalline2457.55*51
112Phono Solar TechnologyPS-295M-24/TTMonocrystalline2957.53*49
113Phono Solar TechnologyPS240MB-20/UMonocrystalline2407.52*49
114Phono Solar TechnologyPS185M-24/FMonocrystalline1857.51*49
115Phono Solar TechnologyPS235P-20/UPolycrystalline2357.50*48
116Phono Solar TechnologyPS235M-20/UMonocrystalline2357.49*47
117Phono Solar TechnologyPS285P-24/TPolycrystalline2857.49*48
118Phono Solar TechnologyPS285M-24/TMonocrystalline2857.48*47
119Phono Solar TechnologyPS285MB-24/TMonocrystalline2857.47*46
120Phono Solar TechnologyPS-290P-24/TTPolycrystalline2907.46*45
121Phono Solar TechnologyPS285PB-24/TPolycrystalline2857.46*46
122Phono Solar TechnologyPS-240P-20/UTPolycrystalline2407.46*46
123Phono Solar TechnologyPS-235M-20/UTMonocrystalline2357.43*43
124Phono Solar TechnologyPS-280M-24/TTMonocrystalline2807.43*44
125Phono Solar TechnologyPS-290M-24/TTMonocrystalline2907.41*42
126Phono Solar TechnologyPS-230M-20/UTMonocrystalline2307.40*42
127Phono Solar TechnologyPS235PB-20/UPolycrystalline2357.39*41
128Phono Solar TechnologyPS-220M-18/VTMonocrystalline2207.39*41
129Phono Solar TechnologyPS235MB-20/UMonocrystalline2357.37*40
130Phono Solar TechnologyPS230P-20/UPolycrystalline2307.35*39
131Phono Solar TechnologyPS-285P-24/TTPolycrystalline2857.33*37
132Phono Solar TechnologyPS280MB-24/TMonocrystalline2807.33*38
133Phono Solar TechnologyPS230M-20/UMonocrystalline2307.32*37
134Phono Solar TechnologyPS280PB-24/TPolycrystalline2807.32*37
135Phono Solar TechnologyPS180M-24/FMonocrystalline1807.31*36
136Phono Solar TechnologyPS-275M-24/TTMonocrystalline2757.31*36
137Phono Solar TechnologyPS280P-24/TPolycrystalline2807.30*36
138Phono Solar TechnologyPS280M-24/TMonocrystalline2807.29*35
139Phono Solar TechnologyPS225P-20/UPolycrystalline2257.29*35
140Phono Solar TechnologyPS-225M-20/UTMonocrystalline2257.24*33
141Phono Solar TechnologyPS230PB-20/UPolycrystalline2307.24*33
142Phono Solar TechnologyPS-215M-18/VTMonocrystalline2157.22*32
143Phono Solar TechnologyPS230MB-20/UMonocrystalline2307.21*31
144Phono Solar TechnologyPS-280P-24/TTPolycrystalline2807.21*31
145Phono Solar TechnologyPS-270M-24/TTMonocrystalline2707.18*29
146Phono Solar TechnologyPS225M-20/UMonocrystalline2257.17*28
147Phono Solar TechnologyPS-230P-20/UTPolycrystalline2307.15*27
148Phono Solar TechnologyPS220P-20/UPolycrystalline2207.14*27
149Phono Solar TechnologyPS220M-20/UMonocrystalline2207.09*25
150Phono Solar TechnologyPS-220M-20/UTMonocrystalline2207.08*25
151Phono Solar TechnologyPS-275P-24/TTPolycrystalline2757.07*24
152Phono Solar TechnologyPS270P-24/TPolycrystalline2707.04*23
153Phono Solar TechnologyPS-265M-24/TTMonocrystalline2657.04*23
154Phono Solar TechnologyPS270M-24/TMonocrystalline2707.03*22
155Phono Solar TechnologyPS-225P-20/UTPolycrystalline2256.98*21
156Phono Solar TechnologyPS215P-20/UPolycrystalline2156.97*20
157Phono Solar TechnologyPS215M-20/UMonocrystalline2156.92*18
158Phono Solar TechnologyPS170M-24/FMonocrystalline1706.89*17
159Phono Solar TechnologyPS-220P-20/UTPolycrystalline2206.84*16
160Phono Solar TechnologyPS210P-20/UPolycrystalline2106.82*15
161Phono Solar TechnologyPS260M-24/TMonocrystalline2606.77*13
162Phono Solar TechnologyPS210M-20/UMonocrystalline2106.76*13
163Phono Solar TechnologyPS260P-24/TPolycrystalline2606.76*13
164Phono Solar TechnologyPS165M-24/FMonocrystalline1656.68*11
165Phono Solar TechnologyPS160M-24/FMonocrystalline1606.49*7

* 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.