Principal Solar Institute
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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 |
|---|---|---|---|---|---|---|
| 1 | Phono Solar Technology | PS-315P-24/TT | Polycrystalline | 315 | 10.23* | 99 |
| 2 | Phono Solar Technology | PS-310P-24/TT | Polycrystalline | 310 | 10.06* | 99 |
| 3 | Phono Solar Technology | PS-305P-24/TT | Polycrystalline | 305 | 9.91* | 99 |
| 4 | Phono Solar Technology | PS-300P-24/TT | Polycrystalline | 300 | 9.74* | 99 |
| 5 | Phono Solar Technology | PS-295P-24/TT | Polycrystalline | 295 | 9.58* | 98 |
| 6 | Phono Solar Technology | PS 335M-24/TV | Monocrystalline | 335 | 8.66* | 93 |
| 7 | Phono Solar Technology | PS-280M-20/UT | Monocrystalline | 280 | 8.65* | 93 |
| 8 | Phono Solar Technology | PS 280M-20/UV | Monocrystalline | 280 | 8.62* | 93 |
| 9 | Phono Solar Technology | PS 330M-24/TV | Monocrystalline | 330 | 8.54* | 92 |
| 10 | Phono Solar Technology | PS-330M-24/TT | Monocrystalline | 330 | 8.52* | 91 |
| 11 | Phono Solar Technology | PS-275M-20/UT | Monocrystalline | 275 | 8.50* | 91 |
| 12 | Phono Solar Technology | PS 275M-20/UV | Monocrystalline | 275 | 8.46* | 90 |
| 13 | Phono Solar Technology | PS320PB-24/T | Polycrystalline | 320 | 8.40* | 89 |
| 14 | Phono Solar Technology | PS 325M-24/TV | Monocrystalline | 325 | 8.40* | 89 |
| 15 | Phono Solar Technology | PS-325M-24/TT | Monocrystalline | 325 | 8.40* | 89 |
| 16 | Phono Solar Technology | PS320MB-24/T | Monocrystalline | 320 | 8.40* | 89 |
| 17 | Phono Solar Technology | PS-270M-20/UT | Monocrystalline | 270 | 8.35* | 88 |
| 18 | Phono Solar Technology | PS 270M-20/UV | Monocrystalline | 270 | 8.30* | 86 |
| 19 | Phono Solar Technology | PS 320M-24/TV | Monocrystalline | 320 | 8.28* | 86 |
| 20 | Phono Solar Technology | PS315PB-24/T | Polycrystalline | 315 | 8.28* | 86 |
| 21 | Phono Solar Technology | PS315P-24/T | Polycrystalline | 315 | 8.28* | 86 |
| 22 | Phono Solar Technology | PS 325P-24/TV | Polycrystalline | 325 | 8.27* | 86 |
| 23 | Phono Solar Technology | PS315MB-24/T | Monocrystalline | 315 | 8.27* | 86 |
| 24 | Phono Solar Technology | PS315M-24/T | Monocrystalline | 315 | 8.27* | 86 |
| 25 | Phono Solar Technology | PS-320M-24/TT | Monocrystalline | 320 | 8.27* | 86 |
| 26 | Phono Solar Technology | PS-265M-20/UT | Monocrystalline | 265 | 8.20* | 83 |
| 27 | Phono Solar Technology | PS 270P-20/UV | Polycrystalline | 270 | 8.20* | 83 |
| 28 | Phono Solar Technology | PS260PB-20/U | Polycrystalline | 260 | 8.16* | 82 |
| 29 | Phono Solar Technology | PS260P-20/U-AC | Polycrystalline | 260 | 8.16* | 82 |
| 30 | Phono Solar Technology | PS260P-20/U | Polycrystalline | 260 | 8.16* | 82 |
| 31 | Phono Solar Technology | PS-260M-20/UT | Monocrystalline | 260 | 8.16* | 82 |
| 32 | Phono Solar Technology | PS310PB-24/T | Polycrystalline | 310 | 8.15* | 81 |
| 33 | Phono Solar Technology | PS310MB-24/T | Monocrystalline | 310 | 8.15* | 81 |
| 34 | Phono Solar Technology | PS 315M-24/TV | Monocrystalline | 315 | 8.15* | 82 |
| 35 | Phono Solar Technology | PS 320P-24/TV | Polycrystalline | 320 | 8.15* | 82 |
| 36 | Phono Solar Technology | PS310P-24/T | Polycrystalline | 310 | 8.15* | 82 |
| 37 | Phono Solar Technology | PS 265M-20/UV | Monocrystalline | 265 | 8.15* | 82 |
| 38 | Phono Solar Technology | PS310M-24/T | Monocrystalline | 310 | 8.14* | 81 |
| 39 | Phono Solar Technology | PS260MB-20/U | Monocrystalline | 260 | 8.14* | 81 |
| 40 | Phono Solar Technology | PS-315M-24/TT | Monocrystalline | 315 | 8.13* | 81 |
| 41 | Phono Solar Technology | PS260M-20/U-AC | Monocrystalline | 260 | 8.12* | 80 |
| 42 | Phono Solar Technology | PS260M-20/U | Monocrystalline | 260 | 8.12* | 80 |
| 43 | Phono Solar Technology | PS 265P-20/UV | Polycrystalline | 265 | 8.05* | 77 |
| 44 | Phono Solar Technology | PS-240M-18/VT | Monocrystalline | 240 | 8.03* | 77 |
| 45 | Phono Solar Technology | PS 310M-24/TV | Monocrystalline | 310 | 8.02* | 76 |
| 46 | Phono Solar Technology | PS-260P-20/UT | Polycrystalline | 260 | 8.02* | 77 |
| 47 | Phono Solar Technology | PS305P-24/T | Polycrystalline | 305 | 8.02* | 76 |
| 48 | Phono Solar Technology | PS 315P-24/TV | Polycrystalline | 315 | 8.02* | 76 |
| 49 | Phono Solar Technology | PS305MB-24/T | Monocrystalline | 305 | 8.01* | 76 |
| 50 | Phono Solar Technology | PS305PB-24/T | Polycrystalline | 305 | 8.01* | 76 |
| 51 | Phono Solar Technology | PS-310M-24/TT | Monocrystalline | 310 | 8.01* | 76 |
| 52 | Phono Solar Technology | PS 260M-20/UV | Monocrystalline | 260 | 8.00* | 75 |
| 53 | Phono Solar Technology | PS305M-24/T | Monocrystalline | 305 | 8.00* | 75 |
| 54 | Phono Solar Technology | PS-255M-20/UT | Monocrystalline | 255 | 8.00* | 76 |
| 55 | Phono Solar Technology | PS255MB-20/U | Monocrystalline | 255 | 7.99* | 75 |
| 56 | Phono Solar Technology | PS255PB-20/U | Polycrystalline | 255 | 7.99* | 75 |
| 57 | Phono Solar Technology | PS255P-20/U | Polycrystalline | 255 | 7.98* | 75 |
| 58 | Phono Solar Technology | PS255P-20/U-AC | Polycrystalline | 255 | 7.98* | 75 |
| 59 | Phono Solar Technology | PS255M-20/U | Monocrystalline | 255 | 7.96* | 73 |
| 60 | Phono Solar Technology | PS255M-20/U-AC | Monocrystalline | 255 | 7.96* | 73 |
| 61 | Phono Solar Technology | PS 260P-20/UV | Polycrystalline | 260 | 7.95* | 73 |
| 62 | Phono Solar Technology | PS200M-24/F | Monocrystalline | 200 | 7.93* | 72 |
| 63 | Phono Solar Technology | PS 310P-24/TV | Polycrystalline | 310 | 7.90* | 70 |
| 64 | Phono Solar Technology | PS-250M-20/UT | Monocrystalline | 250 | 7.90* | 71 |
| 65 | Phono Solar Technology | PS-250M-24/TT | Monocrystalline | 250 | 7.90* | 71 |
| 66 | Phono Solar Technology | PS-305M-24/TT | Monocrystalline | 305 | 7.88* | 70 |
| 67 | Phono Solar Technology | PS300P-24/T | Polycrystalline | 300 | 7.88* | 70 |
| 68 | Phono Solar Technology | PS300MB-24/T | Monocrystalline | 300 | 7.88* | 70 |
| 69 | Phono Solar Technology | PS300PB-24/T | Polycrystalline | 300 | 7.88* | 70 |
| 70 | Phono Solar Technology | PS300M-24/T | Monocrystalline | 300 | 7.87* | 69 |
| 71 | Phono Solar Technology | PS-255P-20/UT | Polycrystalline | 255 | 7.87* | 69 |
| 72 | Phono Solar Technology | PS 255P-20/UV | Polycrystalline | 255 | 7.87* | 69 |
| 73 | Phono Solar Technology | PS250M-20/U | Monocrystalline | 250 | 7.84* | 67 |
| 74 | Phono Solar Technology | PS250M-20/U-AC | Monocrystalline | 250 | 7.84* | 67 |
| 75 | Phono Solar Technology | PS250PB-20/U | Polycrystalline | 250 | 7.83* | 67 |
| 76 | Phono Solar Technology | PS250MB-20/U | Monocrystalline | 250 | 7.83* | 67 |
| 77 | Phono Solar Technology | PS250P-20/U-AC | Polycrystalline | 250 | 7.82* | 67 |
| 78 | Phono Solar Technology | PS250P-20/U | Polycrystalline | 250 | 7.82* | 67 |
| 79 | Phono Solar Technology | PS 305P-24/TV | Polycrystalline | 305 | 7.78* | 64 |
| 80 | Phono Solar Technology | PS295MB-24/T | Monocrystalline | 295 | 7.76* | 63 |
| 81 | Phono Solar Technology | PS295P-24/T | Polycrystalline | 295 | 7.75* | 63 |
| 82 | Phono Solar Technology | PS295PB-24/T | Polycrystalline | 295 | 7.74* | 62 |
| 83 | Phono Solar Technology | PS295M-24/T | Monocrystalline | 295 | 7.74* | 62 |
| 84 | Phono Solar Technology | PS-245M-20/UT | Monocrystalline | 245 | 7.74* | 62 |
| 85 | Phono Solar Technology | PS195M-24/F | Monocrystalline | 195 | 7.72* | 61 |
| 86 | Phono Solar Technology | PS-250P-20/UT | Polycrystalline | 250 | 7.71* | 60 |
| 87 | Phono Solar Technology | PS190M-24/F | Monocrystalline | 190 | 7.71* | 60 |
| 88 | Phono Solar Technology | PS250M | Monocrystalline | 250 | 7.71* | 60 |
| 89 | Phono Solar Technology | PS 250P-20/UV | Polycrystalline | 250 | 7.69* | 59 |
| 90 | Phono Solar Technology | PS245M-20/U | Monocrystalline | 245 | 7.68* | 59 |
| 91 | Phono Solar Technology | PS245M-20/U-AC | Monocrystalline | 245 | 7.68* | 59 |
| 92 | Phono Solar Technology | PS240P-20/U | Polycrystalline | 240 | 7.67* | 58 |
| 93 | Phono Solar Technology | PS245MB-20/U | Monocrystalline | 245 | 7.67* | 58 |
| 94 | Phono Solar Technology | PS240P-20/U-AC | Polycrystalline | 240 | 7.67* | 58 |
| 95 | Phono Solar Technology | PS245P-20/U-AC | Polycrystalline | 245 | 7.66* | 57 |
| 96 | Phono Solar Technology | PS245P-20/U | Polycrystalline | 245 | 7.66* | 57 |
| 97 | Phono Solar Technology | PS245PB-20/U | Polycrystalline | 245 | 7.66* | 57 |
| 98 | Phono Solar Technology | PS-300M-24/TT | Monocrystalline | 300 | 7.66* | 58 |
| 99 | Phono Solar Technology | PS240M-20/U-AC | Monocrystalline | 240 | 7.63* | 56 |
| 100 | Phono Solar Technology | PS240M-20/U | Monocrystalline | 240 | 7.63* | 56 |
| 101 | Phono Solar Technology | PS290P-24/T | Polycrystalline | 290 | 7.62* | 55 |
| 102 | Phono Solar Technology | PS290MB-24/T | Monocrystalline | 290 | 7.61* | 54 |
| 103 | Phono Solar Technology | PS290M-24/T | Monocrystalline | 290 | 7.61* | 55 |
| 104 | Phono Solar Technology | PS-240M-20/UT | Monocrystalline | 240 | 7.59* | 53 |
| 105 | Phono Solar Technology | PS290PB-24/T | Polycrystalline | 290 | 7.59* | 53 |
| 106 | Phono Solar Technology | PS-285M-24/TT | Monocrystalline | 285 | 7.57* | 52 |
| 107 | Phono Solar Technology | PS-245P-20/UT | Polycrystalline | 245 | 7.56* | 51 |
| 108 | Phono Solar Technology | PS-225M-18/VT | Monocrystalline | 225 | 7.56* | 51 |
| 109 | Phono Solar Technology | PS240PB-20/U | Polycrystalline | 240 | 7.56* | 51 |
| 110 | Phono Solar Technology | PS 300P-24/TV | Polycrystalline | 300 | 7.55* | 51 |
| 111 | Phono Solar Technology | PS245M | Monocrystalline | 245 | 7.55* | 51 |
| 112 | Phono Solar Technology | PS-295M-24/TT | Monocrystalline | 295 | 7.53* | 49 |
| 113 | Phono Solar Technology | PS240MB-20/U | Monocrystalline | 240 | 7.52* | 49 |
| 114 | Phono Solar Technology | PS185M-24/F | Monocrystalline | 185 | 7.51* | 49 |
| 115 | Phono Solar Technology | PS235P-20/U | Polycrystalline | 235 | 7.50* | 48 |
| 116 | Phono Solar Technology | PS235M-20/U | Monocrystalline | 235 | 7.49* | 47 |
| 117 | Phono Solar Technology | PS285P-24/T | Polycrystalline | 285 | 7.49* | 48 |
| 118 | Phono Solar Technology | PS285M-24/T | Monocrystalline | 285 | 7.48* | 47 |
| 119 | Phono Solar Technology | PS285MB-24/T | Monocrystalline | 285 | 7.47* | 46 |
| 120 | Phono Solar Technology | PS-290P-24/TT | Polycrystalline | 290 | 7.46* | 45 |
| 121 | Phono Solar Technology | PS285PB-24/T | Polycrystalline | 285 | 7.46* | 46 |
| 122 | Phono Solar Technology | PS-240P-20/UT | Polycrystalline | 240 | 7.46* | 46 |
| 123 | Phono Solar Technology | PS-235M-20/UT | Monocrystalline | 235 | 7.43* | 43 |
| 124 | Phono Solar Technology | PS-280M-24/TT | Monocrystalline | 280 | 7.43* | 44 |
| 125 | Phono Solar Technology | PS-290M-24/TT | Monocrystalline | 290 | 7.41* | 42 |
| 126 | Phono Solar Technology | PS-230M-20/UT | Monocrystalline | 230 | 7.40* | 42 |
| 127 | Phono Solar Technology | PS235PB-20/U | Polycrystalline | 235 | 7.39* | 41 |
| 128 | Phono Solar Technology | PS-220M-18/VT | Monocrystalline | 220 | 7.39* | 41 |
| 129 | Phono Solar Technology | PS235MB-20/U | Monocrystalline | 235 | 7.37* | 40 |
| 130 | Phono Solar Technology | PS230P-20/U | Polycrystalline | 230 | 7.35* | 39 |
| 131 | Phono Solar Technology | PS-285P-24/TT | Polycrystalline | 285 | 7.33* | 37 |
| 132 | Phono Solar Technology | PS280MB-24/T | Monocrystalline | 280 | 7.33* | 38 |
| 133 | Phono Solar Technology | PS230M-20/U | Monocrystalline | 230 | 7.32* | 37 |
| 134 | Phono Solar Technology | PS280PB-24/T | Polycrystalline | 280 | 7.32* | 37 |
| 135 | Phono Solar Technology | PS180M-24/F | Monocrystalline | 180 | 7.31* | 36 |
| 136 | Phono Solar Technology | PS-275M-24/TT | Monocrystalline | 275 | 7.31* | 36 |
| 137 | Phono Solar Technology | PS280P-24/T | Polycrystalline | 280 | 7.30* | 36 |
| 138 | Phono Solar Technology | PS280M-24/T | Monocrystalline | 280 | 7.29* | 35 |
| 139 | Phono Solar Technology | PS225P-20/U | Polycrystalline | 225 | 7.29* | 35 |
| 140 | Phono Solar Technology | PS-225M-20/UT | Monocrystalline | 225 | 7.24* | 33 |
| 141 | Phono Solar Technology | PS230PB-20/U | Polycrystalline | 230 | 7.24* | 33 |
| 142 | Phono Solar Technology | PS-215M-18/VT | Monocrystalline | 215 | 7.22* | 32 |
| 143 | Phono Solar Technology | PS230MB-20/U | Monocrystalline | 230 | 7.21* | 31 |
| 144 | Phono Solar Technology | PS-280P-24/TT | Polycrystalline | 280 | 7.21* | 31 |
| 145 | Phono Solar Technology | PS-270M-24/TT | Monocrystalline | 270 | 7.18* | 29 |
| 146 | Phono Solar Technology | PS225M-20/U | Monocrystalline | 225 | 7.17* | 28 |
| 147 | Phono Solar Technology | PS-230P-20/UT | Polycrystalline | 230 | 7.15* | 27 |
| 148 | Phono Solar Technology | PS220P-20/U | Polycrystalline | 220 | 7.14* | 27 |
| 149 | Phono Solar Technology | PS220M-20/U | Monocrystalline | 220 | 7.09* | 25 |
| 150 | Phono Solar Technology | PS-220M-20/UT | Monocrystalline | 220 | 7.08* | 25 |
| 151 | Phono Solar Technology | PS-275P-24/TT | Polycrystalline | 275 | 7.07* | 24 |
| 152 | Phono Solar Technology | PS270P-24/T | Polycrystalline | 270 | 7.04* | 23 |
| 153 | Phono Solar Technology | PS-265M-24/TT | Monocrystalline | 265 | 7.04* | 23 |
| 154 | Phono Solar Technology | PS270M-24/T | Monocrystalline | 270 | 7.03* | 22 |
| 155 | Phono Solar Technology | PS-225P-20/UT | Polycrystalline | 225 | 6.98* | 21 |
| 156 | Phono Solar Technology | PS215P-20/U | Polycrystalline | 215 | 6.97* | 20 |
| 157 | Phono Solar Technology | PS215M-20/U | Monocrystalline | 215 | 6.92* | 18 |
| 158 | Phono Solar Technology | PS170M-24/F | Monocrystalline | 170 | 6.89* | 17 |
| 159 | Phono Solar Technology | PS-220P-20/UT | Polycrystalline | 220 | 6.84* | 16 |
| 160 | Phono Solar Technology | PS210P-20/U | Polycrystalline | 210 | 6.82* | 15 |
| 161 | Phono Solar Technology | PS260M-24/T | Monocrystalline | 260 | 6.77* | 13 |
| 162 | Phono Solar Technology | PS210M-20/U | Monocrystalline | 210 | 6.76* | 13 |
| 163 | Phono Solar Technology | PS260P-24/T | Polycrystalline | 260 | 6.76* | 13 |
| 164 | Phono Solar Technology | PS165M-24/F | Monocrystalline | 165 | 6.68* | 11 |
| 165 | Phono Solar Technology | PS160M-24/F | Monocrystalline | 160 | 6.49* | 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.