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 Apollo Solar Energy

Here are the PSI Ratings for modules from Apollo Solar 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
1Apollo Solar EnergyASEC-220G6M68Polycrystalline2208.52*91
2Apollo Solar EnergyASEC-220G6S68Monocrystalline2208.47*90
3Apollo Solar EnergyASEC-270G6M6APolycrystalline2708.44*90
4Apollo Solar EnergyASEC-245G6M69Polycrystalline2458.44*90
5Apollo Solar EnergyASEC-245G6S69Monocrystalline2458.40*89
6Apollo Solar EnergyASEC-270G6S6AMonocrystalline2708.39*89
7Apollo Solar EnergyASEC-295G6M6BPolycrystalline2958.38*88
8Apollo Solar EnergyASEC-325G6MPolycrystalline3258.38*88
9Apollo Solar EnergyASEC-215G6M68Polycrystalline2158.33*87
10Apollo Solar EnergyASEC-325G6SMonocrystalline3258.32*87
11Apollo Solar EnergyASEC-295G6S6BMonocrystalline2958.32*87
12Apollo Solar EnergyASEC-215G6S68Monocrystalline2158.28*86
13Apollo Solar EnergyASEC-265G6M6APolycrystalline2658.28*86
14Apollo Solar EnergyASEC-240G6M69Polycrystalline2408.26*85
15Apollo Solar EnergyASEC-290G6M6BPolycrystalline2908.24*85
16Apollo Solar EnergyASEC-265G6S6AMonocrystalline2658.24*84
17Apollo Solar EnergyASEC-320G6MPolycrystalline3208.24*85
18Apollo Solar EnergyASEC-240G6S69Monocrystalline2408.23*84
19Apollo Solar EnergyASEC-320G6SMonocrystalline3208.19*83
20Apollo Solar EnergyASEC-290G6S6BMonocrystalline2908.18*83
21Apollo Solar EnergyASEC-210G6M68Polycrystalline2108.13*81
22Apollo Solar EnergyASEC-260G6M6APolycrystalline2608.13*81
23Apollo Solar EnergyASEC-315G6MPolycrystalline3158.12*80
24Apollo Solar EnergyASEC-210G6S68Monocrystalline2108.09*79
25Apollo Solar EnergyASEC-285G6M6BPolycrystalline2858.09*79
26Apollo Solar EnergyASEC-235G6M69Polycrystalline2358.09*79
27Apollo Solar EnergyASEC-260G6S6AMonocrystalline2608.08*79
28Apollo Solar EnergyASEC-235G6S69Monocrystalline2358.06*78
29Apollo Solar EnergyASEC-315G6SMonocrystalline3158.06*78
30Apollo Solar EnergyASEC-285G6S6BMonocrystalline2858.04*77
31Apollo Solar EnergyASEC-310G6MPolycrystalline3107.99*75
32Apollo Solar EnergyASEC-255G6M6APolycrystalline2557.97*74
33Apollo Solar EnergyASEC-155G6M49Polycrystalline1557.95*73
34Apollo Solar EnergyASEC-280G6M6BPolycrystalline2807.95*73
35Apollo Solar EnergyASEC-205G6M68Polycrystalline2057.94*73
36Apollo Solar EnergyASEC-310G6SMonocrystalline3107.93*72
37Apollo Solar EnergyASEC-230G6M69Polycrystalline2307.92*71
38Apollo Solar EnergyASEC-255G6S6AMonocrystalline2557.92*72
39Apollo Solar EnergyASEC-155G6S49Monocrystalline1557.91*71
40Apollo Solar EnergyASEC-280G6S6BMonocrystalline2807.90*70
41Apollo Solar EnergyASEC-230G6S69Monocrystalline2307.89*70
42Apollo Solar EnergyASEC-205G6S68Monocrystalline2057.89*70
43Apollo Solar EnergyASEC-305G6MPolycrystalline3057.85*68
44Apollo Solar EnergyASEC-305G6SMonocrystalline3057.81*66
45Apollo Solar EnergyASEC-275G6M6BPolycrystalline2757.81*66
46Apollo Solar EnergyASEC-250G6M6APolycrystalline2507.80*66
47Apollo Solar EnergyASEC-245G6S6AMonocrystalline2457.79*65
48Apollo Solar EnergyASEC-245G6M6APolycrystalline2457.77*64
49Apollo Solar EnergyASEC-250G6S6AMonocrystalline2507.77*64
50Apollo Solar EnergyASEC-275G6S6BMonocrystalline2757.76*63
51Apollo Solar EnergyASEC-200G6M68Polycrystalline2007.75*63
52Apollo Solar EnergyASEC-225G6M69Polycrystalline2257.74*62
53Apollo Solar EnergyASEC-300G6MPolycrystalline3007.73*62
54Apollo Solar EnergyASEC-225G6S69Monocrystalline2257.72*61
55Apollo Solar EnergyASEC-200G6S68Monocrystalline2007.70*60
56Apollo Solar EnergyASEC-150G6M49Polycrystalline1507.69*59
57Apollo Solar EnergyASEC-300G6SMonocrystalline3007.68*59
58Apollo Solar EnergyASEC-220G6S69Monocrystalline2207.66*57
59Apollo Solar EnergyASEC-270G6M6BPolycrystalline2707.66*58
60Apollo Solar EnergyASEC-270G6S6BMonocrystalline2707.65*57
61Apollo Solar EnergyASEC-150G6S49Monocrystalline1507.65*57
62Apollo Solar EnergyASEC-195G6S68Monocrystalline1957.63*55
63Apollo Solar EnergyASEC-240G6S6AMonocrystalline2407.63*56
64Apollo Solar EnergyASEC-220G6M69Polycrystalline2207.61*54
65Apollo Solar EnergyASEC-240G6M6APolycrystalline2407.61*55
66Apollo Solar EnergyASEC-295G6MPolycrystalline2957.60*54
67Apollo Solar EnergyASEC-290G6SMonocrystalline2907.57*52
68Apollo Solar EnergyASEC-195G6M68Polycrystalline1957.57*52
69Apollo Solar EnergyASEC-295G6SMonocrystalline2957.55*51
70Apollo Solar EnergyASEC-210G6SMonocrystalline2107.55*51
71Apollo Solar EnergyASEC-265G6M6BPolycrystalline2657.52*49
72Apollo Solar EnergyASEC-265G6S6BMonocrystalline2657.51*49
73Apollo Solar EnergyASEC-290G6MPolycrystalline2907.50*48
74Apollo Solar EnergyASEC-215G6S69Monocrystalline2157.48*47
75Apollo Solar EnergyASEC-285G6SMonocrystalline2857.45*45
76Apollo Solar EnergyASEC-215G6M69Polycrystalline2157.44*44
77Apollo Solar EnergyASEC-235G6SMonocrystalline2357.43*44
78Apollo Solar EnergyASEC-210G6MPolycrystalline2107.43*44
79Apollo Solar EnergyASEC-190G6S68Monocrystalline1907.43*43
80Apollo Solar EnergyASEC-145G6M49Polycrystalline1457.43*43
81Apollo Solar EnergyASEC-145G6S49Monocrystalline1457.40*41
82Apollo Solar EnergyASEC-235G6MPolycrystalline2357.39*41
83Apollo Solar EnergyASEC-260G6M6BPolycrystalline2607.38*40
84Apollo Solar EnergyASEC-190G6M68Polycrystalline1907.37*40
85Apollo Solar EnergyASEC-205G6SMonocrystalline2057.37*40
86Apollo Solar EnergyASEC-260G6S6BMonocrystalline2607.37*40
87Apollo Solar EnergyASEC-285G6MPolycrystalline2857.37*40
88Apollo Solar EnergyASEC-280G6SMonocrystalline2807.31*36
89Apollo Solar EnergyASEC-230G6SMonocrystalline2307.27*34
90Apollo Solar EnergyASEC-205G6MPolycrystalline2057.26*34
91Apollo Solar EnergyASEC-140G6SMonocrystalline1407.26*34
92Apollo Solar EnergyASEC-280G6MPolycrystalline2807.24*33
93Apollo Solar EnergyASEC-255G6M6BPolycrystalline2557.24*32
94Apollo Solar EnergyASEC-140G6MPolycrystalline1407.24*33
95Apollo Solar EnergyASEC-230G6MPolycrystalline2307.23*32
96Apollo Solar EnergyASEC-255G6S6BMonocrystalline2557.23*32
97Apollo Solar EnergyASEC-200G6SMonocrystalline2007.20*30
98Apollo Solar EnergyASEC-275G6SMonocrystalline2757.18*29
99Apollo Solar EnergyASEC-225G6SMonocrystalline2257.16*28
100Apollo Solar EnergyASEC-185G6MPolycrystalline1857.14*27
101Apollo Solar EnergyASEC-185G6SMonocrystalline1857.13*27
102Apollo Solar EnergyASEC-275G6MPolycrystalline2757.11*26
103Apollo Solar EnergyASEC-250G6M6BPolycrystalline2507.10*25
104Apollo Solar EnergyASEC-225G6MPolycrystalline2257.09*25
105Apollo Solar EnergyASEC-200G6MPolycrystalline2007.08*25
106Apollo Solar EnergyASEC-250G6S6BMonocrystalline2507.08*25
107Apollo Solar EnergyASEC-270G6SMonocrystalline2707.05*24
108Apollo Solar EnergyASEC-195G6SMonocrystalline1957.01*22
109Apollo Solar EnergyASEC-220G6SMonocrystalline2207.00*21
110Apollo Solar EnergyASEC-135G6SMonocrystalline1357.00*21
111Apollo Solar EnergyASEC-270G6MPolycrystalline2706.99*21
112Apollo Solar EnergyASEC-135G6MPolycrystalline1356.99*21
113Apollo Solar EnergyASEC-180G6MPolycrystalline1806.96*19
114Apollo Solar EnergyASEC-180G6SMonocrystalline1806.95*19
115Apollo Solar EnergyASEC-220G6MMonocrystalline2206.94*19
116Apollo Solar EnergyASEC-195G6MPolycrystalline1956.91*17
117Apollo Solar EnergyASEC-265G6SMonocrystalline2656.89*17
118Apollo Solar EnergyASEC-265G6MPolycrystalline2656.88*17
119Apollo Solar EnergyASEC-215G6SMonocrystalline2156.84*16
120Apollo Solar EnergyASEC-190G6SMonocrystalline1906.83*15
121Apollo Solar EnergyASEC-215G6MMonocrystalline2156.78*13
122Apollo Solar EnergyASEC-130G6MPolycrystalline1306.76*13
123Apollo Solar EnergyASEC-130G6SMonocrystalline1306.76*13
124Apollo Solar EnergyASEC-175G6MPolycrystalline1756.76*13
125Apollo Solar EnergyASEC-175G6SMonocrystalline1756.75*13
126Apollo Solar EnergyASEC-260G6SMonocrystalline2606.75*13
127Apollo Solar EnergyASEC-260G6MPolycrystalline2606.75*13
128Apollo Solar EnergyASEC-190G6MPolycrystalline1906.74*12
129Apollo Solar EnergyASEC-255G6SMonocrystalline2556.63*10
130Apollo Solar EnergyASEC-255G6MPolycrystalline2556.62*10
131Apollo Solar EnergyASEC-125G6SMonocrystalline1256.49*7
132Apollo Solar EnergyASEC-250G6MPolycrystalline2506.49*7
133Apollo Solar EnergyASEC-125G6MPolycrystalline1256.45*7
134Apollo Solar EnergyASEC-245G6MPolycrystalline2456.37*6
135Apollo Solar EnergyASEC-120G6MPolycrystalline1206.19*4

* 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.