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 ET Solar Industry

Here are the PSI Ratings for modules from ET Solar Industry, 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
1ET Solar IndustryET-M572185WWZMonocrystalline1858.39*89
2ET Solar IndustryET-M572185WWMonocrystalline1858.39*89
3ET Solar IndustryET-P672280WWPolycrystalline2808.28*86
4ET Solar IndustryET-P672280WBPolycrystalline2808.28*86
5ET Solar IndustryET-P660260WWZPolycrystalline2608.26*85
6ET Solar IndustryET-P660260WBPolycrystalline2608.26*85
7ET Solar IndustryET-P660260WWACPolycrystalline2608.26*85
8ET Solar IndustryET-P660260WWPolycrystalline2608.26*85
9ET Solar IndustryET-P660260WWZACPolycrystalline2608.26*85
10ET Solar IndustryET-P660260WBACPolycrystalline2608.26*85
11ET Solar IndustryET-P660260WBZPolycrystalline2608.26*85
12ET Solar IndustryET-P660260WBZACPolycrystalline2608.26*85
13ET Solar IndustryET-A-M660265Monocrystalline2658.22*84
14ET Solar IndustryET-A-M660265BMonocrystalline2658.22*84
15ET Solar IndustryET-M572180WWZMonocrystalline1808.18*83
16ET Solar IndustryET-M572180WWMonocrystalline1808.18*83
17ET Solar IndustryET-P672275WBPolycrystalline2758.13*81
18ET Solar IndustryET-P672275WWPolycrystalline2758.13*81
19ET Solar IndustryET-M660260BBMonocrystalline2608.12*80
20ET Solar IndustryET-P660255WBPolycrystalline2558.10*80
21ET Solar IndustryET-P660255WBZACPolycrystalline2558.10*80
22ET Solar IndustryET-P660255WWZACPolycrystalline2558.10*80
23ET Solar IndustryET-P660255WBZPolycrystalline2558.10*80
24ET Solar IndustryET-P660255WWPolycrystalline2558.10*80
25ET Solar IndustryET-P660255WWZPolycrystalline2558.10*80
26ET Solar IndustryET-P660255WBACPolycrystalline2558.10*80
27ET Solar IndustryET-P660255WWACPolycrystalline2558.10*80
28ET Solar IndustryET-M660260WWMonocrystalline2608.10*80
29ET Solar IndustryET-A-P672275BPolycrystalline2758.09*79
30ET Solar IndustryET-A-P672275Polycrystalline2758.09*79
31ET Solar IndustryET-P672305WWGPolycrystalline3058.08*79
32ET Solar IndustryET-A-M660260BMonocrystalline2608.07*79
33ET Solar IndustryET-A-M660260Monocrystalline2608.07*78
34ET Solar IndustryET-P672310WWPolycrystalline3108.05*78
35ET Solar IndustryET-P672310WBPolycrystalline3108.05*78
36ET Solar IndustryET-P660255BBZACPolycrystalline2558.04*77
37ET Solar IndustryET-P660255BBZPolycrystalline2558.04*77
38ET Solar IndustryET-P660255BBACPolycrystalline2558.04*77
39ET Solar IndustryET-P660255BBPolycrystalline2558.04*77
40ET Solar IndustryET-P672305WBGPolycrystalline3058.01*76
41ET Solar IndustryET-A-M672305Monocrystalline3057.99*75
42ET Solar IndustryET-A-M672305BMonocrystalline3057.99*75
43ET Solar IndustryET-P672270WWPolycrystalline2707.98*74
44ET Solar IndustryET-P672270WBPolycrystalline2707.98*74
45ET Solar IndustryET-M660255WWMonocrystalline2557.97*74
46ET Solar IndustryET-M660255BBMonocrystalline2557.97*74
47ET Solar IndustryET-P672300WBGPolycrystalline3007.95*73
48ET Solar IndustryET-P672300WWGPolycrystalline3007.95*73
49ET Solar IndustryET-P672265WWPolycrystalline2657.95*73
50ET Solar IndustryET-P672265WBPolycrystalline2657.95*73
51ET Solar IndustryET-A-M660255Monocrystalline2557.95*73
52ET Solar IndustryET-A-M660255BMonocrystalline2557.95*73
53ET Solar IndustryET-P672305WWPolycrystalline3057.92*71
54ET Solar IndustryET-P672305WBPolycrystalline3057.92*71
55ET Solar IndustryET-P660250BBPolycrystalline2507.89*70
56ET Solar IndustryET-P660250BBZPolycrystalline2507.89*70
57ET Solar IndustryET-P660250WWPolycrystalline2507.86*69
58ET Solar IndustryET-A-M672300Monocrystalline3007.86*69
59ET Solar IndustryET-A-M672300BMonocrystalline3007.86*69
60ET Solar IndustryET-P660250WWZPolycrystalline2507.86*69
61ET Solar IndustryET-P660250WBPolycrystalline2507.86*69
62ET Solar IndustryET-P660250WBACPolycrystalline2507.86*69
63ET Solar IndustryET-P660250WBZPolycrystalline2507.86*69
64ET Solar IndustryET-M572175WWZMonocrystalline1757.85*68
65ET Solar IndustryET-M572175WWMonocrystalline1757.85*68
66ET Solar IndustryET-P672295WWGPolycrystalline2957.82*66
67ET Solar IndustryET-M660250BBMonocrystalline2507.82*66
68ET Solar IndustryET-P672295WBGPolycrystalline2957.82*66
69ET Solar IndustryET-P672260WWPolycrystalline2607.82*66
70ET Solar IndustryET-P672260WBPolycrystalline2607.82*66
71ET Solar IndustryET-M660250WWMonocrystalline2507.81*66
72ET Solar IndustryET-P672300WWPolycrystalline3007.79*64
73ET Solar IndustryET-P672300WBPolycrystalline3007.79*64
74ET Solar IndustryET-A-M660250Monocrystalline2507.79*65
75ET Solar IndustryET-A-M660250BMonocrystalline2507.79*65
76ET Solar IndustryET-P660250BACPolycrystalline2507.78*64
77ET Solar IndustryET-P660250WBZACPolycrystalline2507.78*64
78ET Solar IndustryET-A-M672295Monocrystalline2957.73*62
79ET Solar IndustryET-A-M672295BMonocrystalline2957.73*62
80ET Solar IndustryET-P660245BBZPolycrystalline2457.72*61
81ET Solar IndustryET-P660245BBPolycrystalline2457.72*61
82ET Solar IndustryET-P660245BPolycrystalline2457.70*60
83ET Solar IndustryET-P660245WBPolycrystalline2457.70*60
84ET Solar IndustryET-P660245WWPolycrystalline2457.70*60
85ET Solar IndustryET-P660245WWZPolycrystalline2457.70*60
86ET Solar IndustryET-P660245WBZPolycrystalline2457.70*60
87ET Solar IndustryET-A-P672295BPolycrystalline2957.70*60
88ET Solar IndustryET-A-P672295Polycrystalline2957.70*60
89ET Solar IndustryET-P672290WWGPolycrystalline2907.69*59
90ET Solar IndustryET-P672290WBGPolycrystalline2907.69*59
91ET Solar IndustryET-M660245BBMonocrystalline2457.66*57
92ET Solar IndustryET-M660245WWMonocrystalline2457.65*57
93ET Solar IndustryET-P672295WBPolycrystalline2957.65*57
94ET Solar IndustryET-P672295WWPolycrystalline2957.65*57
95ET Solar IndustryET-P672255Polycrystalline2557.65*57
96ET Solar IndustryET-A-M660245BMonocrystalline2457.64*56
97ET Solar IndustryET-A-M660245Monocrystalline2457.64*56
98ET Solar IndustryET-A-P660245Polycrystalline2457.64*56
99ET Solar IndustryET-A-P660240Polycrystalline2407.64*56
100ET Solar IndustryET-A-P660240BPolycrystalline2407.64*56
101ET Solar IndustryET-A-P660245BPolycrystalline2457.64*56
102ET Solar IndustryET-P660250BBACPolycrystalline2507.63*55
103ET Solar IndustryET-P660250BBZACPolycrystalline2507.63*55
104ET Solar IndustryET-M572170WWZMonocrystalline1707.63*56
105ET Solar IndustryET-M572170WWMonocrystalline1707.63*56
106ET Solar IndustryET-P672290WWPolycrystalline2907.62*55
107ET Solar IndustryET-P672290WBPolycrystalline2907.62*55
108ET Solar IndustryET-P660245WBZACPolycrystalline2457.62*55
109ET Solar IndustryET-P660245BACPolycrystalline2457.62*55
110ET Solar IndustryET-P660240BPolycrystalline2407.60*54
111ET Solar IndustryET-P660240WWPolycrystalline2407.60*54
112ET Solar IndustryET-P660240WBPolycrystalline2407.60*54
113ET Solar IndustryET-P660240WBZPolycrystalline2407.60*54
114ET Solar IndustryET-P660240WWZPolycrystalline2407.60*54
115ET Solar IndustryET-A-M672290BMonocrystalline2907.59*54
116ET Solar IndustryET-A-M672290Monocrystalline2907.59*54
117ET Solar IndustryET-P660240BBPolycrystalline2407.57*52
118ET Solar IndustryET-P660240BBZPolycrystalline2407.57*52
119ET Solar IndustryET-A-P672290BPolycrystalline2907.56*52
120ET Solar IndustryET-A-P672290Polycrystalline2907.56*52
121ET Solar IndustryET-P672285WBGPolycrystalline2857.55*51
122ET Solar IndustryET-P672285WWGPolycrystalline2857.55*51
123ET Solar IndustryET-P660235WWZPolycrystalline2357.53*49
124ET Solar IndustryET-P660235WBZPolycrystalline2357.53*49
125ET Solar IndustryET-P660235WWPolycrystalline2357.53*49
126ET Solar IndustryET-P660235WBPolycrystalline2357.53*49
127ET Solar IndustryET-P660235BPolycrystalline2357.53*49
128ET Solar IndustryET-M660240BBMonocrystalline2407.52*49
129ET Solar IndustryET-P672250Polycrystalline2507.52*49
130ET Solar IndustryET-M660240WWMonocrystalline2407.50*48
131ET Solar IndustryET-A-M660240Monocrystalline2407.49*47
132ET Solar IndustryET-A-M660240BMonocrystalline2407.49*47
133ET Solar IndustryET-A-P660235Polycrystalline2357.48*47
134ET Solar IndustryET-A-P660235BPolycrystalline2357.48*47
135ET Solar IndustryET-P672285WBPolycrystalline2857.48*47
136ET Solar IndustryET-P672285WWPolycrystalline2857.48*47
137ET Solar IndustryET-P660245BBACPolycrystalline2457.47*46
138ET Solar IndustryET-A-M672285Monocrystalline2857.47*46
139ET Solar IndustryET-A-M672285BMonocrystalline2857.47*46
140ET Solar IndustryET-P660245BBZACPolycrystalline2457.47*46
141ET Solar IndustryET-M572190WWZMonocrystalline1907.46*46
142ET Solar IndustryET-M572190BBZMonocrystalline1907.46*46
143ET Solar IndustryET-M572190WWMonocrystalline1907.46*46
144ET Solar IndustryET-M572190WBMonocrystalline1907.46*46
145ET Solar IndustryET-A-P672285BPolycrystalline2857.44*44
146ET Solar IndustryET-A-P672285Polycrystalline2857.44*44
147ET Solar IndustryET-P672280WWGPolycrystalline2807.42*43
148ET Solar IndustryET-P672280WBGPolycrystalline2807.42*43
149ET Solar IndustryET-P660235BBZPolycrystalline2357.41*42
150ET Solar IndustryET-P660235BBPolycrystalline2357.41*42
151ET Solar IndustryET-M572165WWMonocrystalline1657.38*40
152ET Solar IndustryET-M572165WWZMonocrystalline1657.38*40
153ET Solar IndustryET-M572185BBMonocrystalline1857.38*41
154ET Solar IndustryET-M572185BBZMonocrystalline1857.38*41
155ET Solar IndustryET-P660230WBZPolycrystalline2307.37*40
156ET Solar IndustryET-P660230WWPolycrystalline2307.37*40
157ET Solar IndustryET-P660230WWZPolycrystalline2307.37*40
158ET Solar IndustryET-P660230WBPolycrystalline2307.37*40
159ET Solar IndustryET-P660230BPolycrystalline2307.37*40
160ET Solar IndustryET-A-P660230BPolycrystalline2307.33*37
161ET Solar IndustryET-A-P660230Polycrystalline2307.33*38
162ET Solar IndustryET-A-M660235Monocrystalline2357.33*37
163ET Solar IndustryET-A-M660235BMonocrystalline2357.33*37
164ET Solar IndustryET-A-P672280BPolycrystalline2807.31*36
165ET Solar IndustryET-A-P672280Polycrystalline2807.31*36
166ET Solar IndustryET-P660225WBZPolycrystalline2257.21*31
167ET Solar IndustryET-P660225WWPolycrystalline2257.21*31
168ET Solar IndustryET-P660225WWZPolycrystalline2257.21*31
169ET Solar IndustryET-P660225WBPolycrystalline2257.21*31
170ET Solar IndustryET-M572180BBZMonocrystalline1807.18*29
171ET Solar IndustryET-M572180BBMonocrystalline1807.18*29
172ET Solar IndustryET-A-P660225Polycrystalline2257.17*29
173ET Solar IndustryET-A-P660225BPolycrystalline2257.17*29
174ET Solar IndustryET-P654210WWPolycrystalline2107.17*29
175ET Solar IndustryET-P654210WBPolycrystalline2107.17*29
176ET Solar IndustryET-P660220WWZPolycrystalline2207.05*23
177ET Solar IndustryET-P660220WWPolycrystalline2207.05*23
178ET Solar IndustryET-P660220WBPolycrystalline2207.05*23
179ET Solar IndustryET-P660220WBZPolycrystalline2207.05*23
180ET Solar IndustryET-P654205WWPolycrystalline2056.98*20
181ET Solar IndustryET-P654205WBPolycrystalline2056.98*20
182ET Solar IndustryET-M572175BBMonocrystalline1756.97*20
183ET Solar IndustryET-M572175BBZMonocrystalline1756.97*20
184ET Solar IndustryET-P654200WBPolycrystalline2006.83*15
185ET Solar IndustryET-P654200WWPolycrystalline2006.83*15
186ET Solar IndustryET-P654195WBPolycrystalline1956.65*10
187ET Solar IndustryET-P654195WWPolycrystalline1956.65*10
188ET Solar IndustryET-P654190WBPolycrystalline1906.48*7
189ET Solar IndustryET-P654190WWPolycrystalline1906.48*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.