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 Suntech Power

Here are the PSI Ratings for modules from Suntech Power, 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
1Suntech PowerPLUTO210-AdeMonocrystalline2108.61*93
2Suntech PowerPLUTO210-AdaMonocrystalline2108.56*92
3Suntech PowerSTP320-24/VePolycrystalline3208.54*92
4Suntech PowerSTP320-24/VdxPolycrystalline3208.54*92
5Suntech PowerSTP320-24/VdPolycrystalline3208.54*92
6Suntech PowerPLUTO210-AdfMonocrystalline2108.45*90
7Suntech PowerPLUTO210-AdbMonocrystalline2108.45*90
8Suntech PowerPLUTO310-VdxPolycrystalline3108.44*90
9Suntech PowerSTP315-24/VdPolycrystalline3158.41*89
10Suntech PowerSTP315-24/VerPolycrystalline3158.41*89
11Suntech PowerSTP315-24/VdxPolycrystalline3158.41*89
12Suntech PowerSTP315-24/VePolycrystalline3158.41*89
13Suntech PowerSTP265-20/WdePolycrystalline2658.38*88
14Suntech PowerPLUTO205-AdeMonocrystalline2058.38*88
15Suntech PowerSTP265-20/WdPolycrystalline2658.38*88
16Suntech PowerPLUTO205-AdaMonocrystalline2058.33*87
17Suntech PowerSTP310-24/VdxPolycrystalline3108.33*87
18Suntech PowerSTP260-20/WdbPolycrystalline2608.32*87
19Suntech PowerPLUTO305-VdxPolycrystalline3058.31*87
20Suntech PowerSTP310-VRM-1Polycrystalline3108.27*86
21Suntech PowerSTP310-24/VePolycrystalline3108.27*86
22Suntech PowerSTP310-24/VdPolycrystalline3108.27*86
23Suntech PowerSTP310-VRM-1.5Polycrystalline3108.27*86
24Suntech PowerSTP310-24/VerPolycrystalline3108.27*86
25Suntech PowerPLUTO310-VdmPolycrystalline3108.25*85
26Suntech PowerSTP260S-20/WdeMonocrystalline2608.25*85
27Suntech PowerSTP260S-20/WdbMonocrystalline2608.25*85
28Suntech PowerPLUTO205-AdfMonocrystalline2058.24*84
29Suntech PowerPLUTO205-AdbMonocrystalline2058.24*84
30Suntech PowerSTP260-20/WdPolycrystalline2608.23*84
31Suntech PowerSTP260-20/WdePolycrystalline2608.23*84
32Suntech PowerSTP255-20/WdbPolycrystalline2558.16*82
33Suntech PowerPLUTO300-VdxPolycrystalline3008.16*82
34Suntech PowerPLUTO230-UdmPolycrystalline2308.12*80
35Suntech PowerPLUTO305-VdmPolycrystalline3058.11*80
36Suntech PowerSTP305-24/VdxPolycrystalline3058.10*80
37Suntech PowerSTP305-VRM-1.5Polycrystalline3058.10*80
38Suntech PowerSTP305-24/VePolycrystalline3058.10*80
39Suntech PowerSTP305-24/VdPolycrystalline3058.10*80
40Suntech PowerSTP305-VRM-1Polycrystalline3058.10*80
41Suntech PowerSTP305-24/VerPolycrystalline3058.10*80
42Suntech PowerSTP255S-20/WdeMonocrystalline2558.09*79
43Suntech PowerPLUTO200-AdeMonocrystalline2008.09*79
44Suntech PowerSTP255S-20/WdbMonocrystalline2558.09*79
45Suntech PowerSTP255-20/WdePolycrystalline2558.06*78
46Suntech PowerSTP255-20/WdPolycrystalline2558.06*78
47Suntech PowerPLUTO295-VdxPolycrystalline2958.03*77
48Suntech PowerSTP240-20/WdbPolycrystalline2408.01*76
49Suntech PowerSTP250-20/WdbPolycrystalline2508.00*76
50Suntech PowerPLUTO200-AdaMonocrystalline2007.99*75
51Suntech PowerSTP300-VRM-1.5Polycrystalline3007.98*74
52Suntech PowerSTP300-24/VdxPolycrystalline3007.98*74
53Suntech PowerSTP300-VRM-1Polycrystalline3007.98*74
54Suntech PowerSTP300-24/VerPolycrystalline3007.98*74
55Suntech PowerSTP300-24/VdPolycrystalline3007.98*74
56Suntech PowerSTP300-24/VePolycrystalline3007.98*74
57Suntech PowerPLUTO300-VdmPolycrystalline3007.97*74
58Suntech PowerSTP250S-20/WdeMonocrystalline2507.95*73
59Suntech PowerSTP250S-20/WdMonocrystalline2507.95*73
60Suntech PowerSTP250S-20/WdbMonocrystalline2507.95*73
61Suntech PowerPLUTO225-UdmPolycrystalline2257.94*73
62Suntech PowerPLUTO200-AdfMonocrystalline2007.93*72
63Suntech PowerPLUTO200-AdbMonocrystalline2007.93*72
64Suntech PowerSTP250-20/WdePolycrystalline2507.90*71
65Suntech PowerSTP250-20/WdPolycrystalline2507.90*71
66Suntech PowerPLUTO290-VdxPolycrystalline2907.89*70
67Suntech PowerPLUTO195-AdeMonocrystalline1957.89*70
68Suntech PowerSTP225-18/UdPolycrystalline2257.87*69
69Suntech PowerSTP195S-24/Adb+Monocrystalline1957.85*68
70Suntech PowerSTP195S-24/AdbMonocrystalline1957.85*68
71Suntech PowerSTP245-20/WdbPolycrystalline2457.84*67
72Suntech PowerSTP295-24/VerPolycrystalline2957.84*68
73Suntech PowerSTP295-24/VdxPolycrystalline2957.84*68
74Suntech PowerSTP295-VRM-1.5Polycrystalline2957.84*68
75Suntech PowerSTP295-24/VePolycrystalline2957.84*68
76Suntech PowerSTP295-VRM-1Polycrystalline2957.84*68
77Suntech PowerPLUTO295-VdmPolycrystalline2957.84*68
78Suntech PowerSTP295-24/VdPolycrystalline2957.84*68
79Suntech PowerSTP195S-24/AdMonocrystalline1957.81*66
80Suntech PowerSTP195S-24/Ad+Monocrystalline1957.81*66
81Suntech PowerPLUTO195-AdaMonocrystalline1957.80*65
82Suntech PowerSTP245S-20/WdeMonocrystalline2457.79*65
83Suntech PowerSTP245S-20/WdbMonocrystalline2457.79*65
84Suntech PowerSTP245S-20/WdMonocrystalline2457.79*65
85Suntech PowerPLUTO220-UdmPolycrystalline2207.77*64
86Suntech PowerPLUTO285-VdxPolycrystalline2857.75*63
87Suntech PowerPLUTO190-AdeMonocrystalline1907.75*63
88Suntech PowerSTP245-20/WdePolycrystalline2457.74*62
89Suntech PowerSTP245-20/WdPolycrystalline2457.74*62
90Suntech PowerPLUTO195-AdbMonocrystalline1957.73*62
91Suntech PowerPLUTO195-AdfMonocrystalline1957.73*62
92Suntech PowerPLUTO250-WdmPolycrystalline2507.72*61
93Suntech PowerPLUTO250-WdePolycrystalline2507.72*61
94Suntech PowerPLUTO250-WdbPolycrystalline2507.72*61
95Suntech PowerSTP220-18/UdPolycrystalline2207.71*60
96Suntech PowerPLUTO290-VdmPolycrystalline2907.70*60
97Suntech PowerSTP290-24/VePolycrystalline2907.68*59
98Suntech PowerSTP290-24/VdxPolycrystalline2907.68*59
99Suntech PowerSTP290-VRM-1.5Polycrystalline2907.68*59
100Suntech PowerSTP290-24/VdPolycrystalline2907.68*59
101Suntech PowerSTP290-VRM-1Polycrystalline2907.68*59
102Suntech PowerSTP290-24/VerPolycrystalline2907.68*59
103Suntech PowerPLUTO190-AdaMonocrystalline1907.66*57
104Suntech PowerSTP190S-24/Adb+Monocrystalline1907.65*57
105Suntech PowerSTP190S-24/AdbMonocrystalline1907.65*57
106Suntech PowerSTP240S-20/WdMonocrystalline2407.63*56
107Suntech PowerSTP240S-20/WdeMonocrystalline2407.63*56
108Suntech PowerSTP240S-20/WdbMonocrystalline2407.63*56
109Suntech PowerSTP190S-24/AdMonocrystalline1907.62*55
110Suntech PowerSTP190S-24/Ad+Monocrystalline1907.62*55
111Suntech PowerPLUTO280-VdxPolycrystalline2807.62*55
112Suntech PowerPLUTO215-UdmPolycrystalline2157.59*53
113Suntech PowerPLUTO190-AdbMonocrystalline1907.58*52
114Suntech PowerPLUTO190-AdfMonocrystalline1907.58*53
115Suntech PowerPLUTO245-WdePolycrystalline2457.57*52
116Suntech PowerPLUTO245-WdmPolycrystalline2457.57*52
117Suntech PowerPLUTO285-VdmPolycrystalline2857.57*52
118Suntech PowerPLUTO245-WdbPolycrystalline2457.56*52
119Suntech PowerSTP215-18/UdPolycrystalline2157.54*50
120Suntech PowerSTP285-24/VdPolycrystalline2857.53*50
121Suntech PowerSTP285-24/VdxPolycrystalline2857.53*50
122Suntech PowerSTP285-24/VePolycrystalline2857.53*50
123Suntech PowerSTP285-24/VerPolycrystalline2857.53*50
124Suntech PowerSTP285-VRM-1Polycrystalline2857.53*50
125Suntech PowerSTP285-VRM-1.5Polycrystalline2857.53*50
126Suntech PowerSTP240-20/WdePolycrystalline2407.49*47
127Suntech PowerSTP240-20/WdPolycrystalline2407.49*47
128Suntech PowerSTP240-20/WdlPolycrystalline2407.48*47
129Suntech PowerSTP235S-20/WdbMonocrystalline2357.47*46
130Suntech PowerSTP235S-20/WdMonocrystalline2357.47*46
131Suntech PowerSTP235S-20/WdeMonocrystalline2357.47*46
132Suntech PowerSTP185S-24/AdbMonocrystalline1857.45*45
133Suntech PowerSTP185S-24/Adb+Monocrystalline1857.45*45
134Suntech PowerPLUTO280-VdmPolycrystalline2807.45*45
135Suntech PowerSTP210-18/UdPolycrystalline2107.44*45
136Suntech PowerSTP210-18/UB-1Polycrystalline2107.44*45
137Suntech PowerPLUTO210-UdmPolycrystalline2107.42*43
138Suntech PowerSTP280-VRM-1.5Polycrystalline2807.41*42
139Suntech PowerSTP280-24/VePolycrystalline2807.41*42
140Suntech PowerSTP280-24/VdxPolycrystalline2807.41*42
141Suntech PowerSTP280-24/VdPolycrystalline2807.41*42
142Suntech PowerSTP280-24/Vb-1Polycrystalline2807.41*42
143Suntech PowerSTP280-VRM-1Polycrystalline2807.41*42
144Suntech PowerPLUTO240-WdmPolycrystalline2407.41*42
145Suntech PowerPLUTO240-WdePolycrystalline2407.41*42
146Suntech PowerPLUTO240-WdbPolycrystalline2407.41*42
147Suntech PowerSTP185S-24/Ab-1Monocrystalline1857.39*41
148Suntech PowerSTP185S-24/Ad+Monocrystalline1857.39*41
149Suntech PowerSTP235-20/WdlPolycrystalline2357.35*39
150Suntech PowerSTP275-VRM-1Polycrystalline2757.35*39
151Suntech PowerSTP275-24/VePolycrystalline2757.35*39
152Suntech PowerSTP275-24/VdxPolycrystalline2757.35*39
153Suntech PowerSTP275-24/VdPolycrystalline2757.35*39
154Suntech PowerSTP275-VRM-1.5Polycrystalline2757.35*39
155Suntech PowerSTP235-20/WdePolycrystalline2357.34*38
156Suntech PowerSTP235-20/WdPolycrystalline2357.34*38
157Suntech PowerSTP230S-20/WdMonocrystalline2307.31*36
158Suntech PowerSTP230S-20/WdbMonocrystalline2307.31*36
159Suntech PowerSTP230S-20/WdeMonocrystalline2307.31*36
160Suntech PowerPLUTO235-WdmPolycrystalline2357.28*35
161Suntech PowerPLUTO235-WdePolycrystalline2357.28*35
162Suntech PowerPLUTO235-WdbPolycrystalline2357.28*34
163Suntech PowerSTP180S-24/Adb+Monocrystalline1807.22*31
164Suntech PowerSTP180S-24/Ab-1 BlackMonocrystalline1807.22*31
165Suntech PowerMSZ180J-FMonocrystalline1807.22*31
166Suntech PowerMSZ180B-FMonocrystalline1807.22*31
167Suntech PowerSTP205-18/UdPolycrystalline2057.22*32
168Suntech PowerSTP270-VRM-1Polycrystalline2707.21*31
169Suntech PowerSTP270-24/Vb-1Polycrystalline2707.21*31
170Suntech PowerSTP270-24/VdxPolycrystalline2707.21*31
171Suntech PowerSTP270-24/VePolycrystalline2707.21*31
172Suntech PowerSTP270-24/VdPolycrystalline2707.21*31
173Suntech PowerSTP230-20/WdPolycrystalline2307.17*28
174Suntech PowerSTP230-20/WdePolycrystalline2307.17*28
175Suntech PowerSTP230-20/WdlPolycrystalline2307.17*29
176Suntech PowerSTP180S-24/Ab-1Monocrystalline1807.17*29
177Suntech PowerSTP180S-24/Ad+Monocrystalline1807.17*29
178Suntech PowerPLUTO230-WdbPolycrystalline2307.11*26
179Suntech PowerPLUTO230-WdmPolycrystalline2307.11*26
180Suntech PowerPLUTO230-WdePolycrystalline2307.11*26
181Suntech PowerSTP200-18/UB-1Polycrystalline2007.04*23
182Suntech PowerSTP200-18/UdPolycrystalline2007.04*23
183Suntech PowerSTP225-20/WdePolycrystalline2257.03*22
184Suntech PowerSTP225-20/WdPolycrystalline2257.03*22
185Suntech PowerSTP225-20/WdlPolycrystalline2257.03*22
186Suntech PowerMSZ175B-FMonocrystalline1756.99*21
187Suntech PowerSTP175S-24/Ab-1 BlackMonocrystalline1756.99*21
188Suntech PowerSTP175S-24/Adb+Monocrystalline1756.99*21
189Suntech PowerMSZ175J-FMonocrystalline1756.99*21
190Suntech PowerSTP175S-24/Ad+Monocrystalline1756.95*19
191Suntech PowerSTP175S-24/Ab-1Monocrystalline1756.95*19
192Suntech PowerSTP260-VRM-1Polycrystalline2606.94*19
193Suntech PowerSTP260-24/Vb-1Polycrystalline2606.94*19
194Suntech PowerSTP260-24/VdPolycrystalline2606.94*19
195Suntech PowerSTP260-24/VePolycrystalline2606.94*19
196Suntech PowerSTP220-20/WdlPolycrystalline2206.87*17
197Suntech PowerSTP220-20/WdePolycrystalline2206.86*16
198Suntech PowerSTP220-20/WdPolycrystalline2206.86*16
199Suntech PowerSTP170S-24/Adb+Monocrystalline1706.82*15
200Suntech PowerSTP170S-24/Ab-1 BlackMonocrystalline1706.82*15
201Suntech PowerSTP270D-24/VECPolycrystalline2706.80*14
202Suntech PowerSTP170S-24/Ab-1Monocrystalline1706.78*13
203Suntech PowerSTP170S-24/Ad+Monocrystalline1706.78*13
204Suntech PowerSTP215-20/WdPolycrystalline2156.71*12
205Suntech PowerSTP215-20/WdePolycrystalline2156.71*12
206Suntech PowerSTP190-18/UB-1Polycrystalline1906.69*11
207Suntech PowerSTP210-20/WdePolycrystalline2106.56*9
208Suntech PowerSTP210-20/WdPolycrystalline2106.56*9
209Suntech PowerSTP260D-24/VECPolycrystalline2606.55*8
210Suntech PowerSTP250D-24/VECPolycrystalline2506.34*6
211Suntech PowerSTP050D-5/ZCBPolycrystalline506.26*5
212Suntech PowerSTP050D-5/ZCFPolycrystalline506.26*5
213Suntech PowerSTP050D-5/ZCGPolycrystalline506.26*5
214Suntech PowerSTP165S-24/Ab-1 BlackMonocrystalline1656.19*4
215Suntech PowerSTP160S-24/Ab-1 BlackMonocrystalline1606.00*3
216Suntech PowerSTP135D-12/VECPolycrystalline1353.49*0
217Suntech PowerSTP130D-12/VECPolycrystalline1303.36*0
218Suntech PowerSTP120D-12/VECPolycrystalline1203.14*0

* 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.