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 DJ Solar

Here are the PSI Ratings for modules from DJ Solar, 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	DJ Solar	DJS-T300P672PT	Polycrystalline	300	8.01*	76
2	DJ Solar	DJS-T305S6ST	Monocrystalline	305	7.99*	75
3	DJ Solar	DJS-T275S666ST	Monocrystalline	275	7.86*	68
4	DJ Solar	DJS-T300S6ST	Monocrystalline	300	7.85*	68
5	DJ Solar	DJS-T295P672PT	Polycrystalline	295	7.83*	67
6	DJ Solar	DJS-T200S648ST	Monocrystalline	200	7.83*	67
7	DJ Solar	DJS-T250ST	Monocrystalline	250	7.82*	67
8	DJ Solar	DJS-T225S654ST	Monocrystalline	225	7.81*	66
9	DJ Solar	DJS-T250P660PT	Polycrystalline	250	7.79*	65
10	DJ Solar	DJS-T290P672PT	Polycrystalline	290	7.74*	62
11	DJ Solar	DJS-T295S6ST	Monocrystalline	295	7.73*	62
12	DJ Solar	DJS-T270S666ST	Monocrystalline	270	7.72*	61
13	DJ Solar	DJS-T270P666PT	Polycrystalline	270	7.71*	61
14	DJ Solar	DJS-T245S6ST	Monocrystalline	245	7.67*	58
15	DJ Solar	DJS-T245P660PT	Polycrystalline	245	7.67*	58
16	DJ Solar	DJS195S125M-72	Monocrystalline	195	7.64*	56
17	DJ Solar	DJS-T195S648ST	Monocrystalline	195	7.64*	56
18	DJ Solar	DJS-T220S6ST	Monocrystalline	220	7.64*	56
19	DJ Solar	DJS-T290S6ST	Monocrystalline	290	7.59*	53
20	DJ Solar	DJS-T265S666ST	Monocrystalline	265	7.58*	53
21	DJ Solar	DJS-T265P666PT	Polycrystalline	265	7.54*	50
22	DJ Solar	DJS-T285P6PT	Polycrystalline	285	7.53*	49
23	DJ Solar	DJS-T240PT	Polycrystalline	240	7.51*	48
24	DJ Solar	DJS-T240S6ST	Monocrystalline	240	7.49*	47
25	DJ Solar	DJS-T215S6ST	Monocrystalline	215	7.47*	46
26	DJ Solar	DJS-T285S6ST	Monocrystalline	285	7.46*	46
27	DJ Solar	DJS-T260P666PT	Polycrystalline	260	7.45*	45
28	DJ Solar	DJS190S125M-72	Monocrystalline	190	7.44*	44
29	DJ Solar	DJS-T260S6ST	Monocrystalline	260	7.44*	44
30	DJ Solar	DJS-T190S6ST	Monocrystalline	190	7.43*	44
31	DJ Solar	DJS240S156P-60	Polycrystalline	240	7.40*	41
32	DJ Solar	DJS-T235S6ST	Monocrystalline	235	7.33*	38
33	DJ Solar	DJS-T280S6ST	Monocrystalline	280	7.33*	38
34	DJ Solar	DJS-TU235PT	Polycrystalline	235	7.32*	37
35	DJ Solar	DJS-T255P666PT	Polycrystalline	255	7.32*	37
36	DJ Solar	DJS-T280P6PT	Polycrystalline	280	7.31*	36
37	DJ Solar	DJS235S156P-60	Polycrystalline	235	7.26*	33
38	DJ Solar	DJS185S125M-72	Monocrystalline	185	7.25*	33
39	DJ Solar	DJS-T185S6ST	Monocrystalline	185	7.22*	32
40	DJ Solar	DJS-T210S6ST	Monocrystalline	210	7.19*	30
41	DJ Solar	DJS225S156P-60	Polycrystalline	225	7.19*	30
42	DJ Solar	DJS-T275P6PT	Polycrystalline	275	7.18*	29
43	DJ Solar	DJS180S125M-72	Monocrystalline	180	7.17*	29
44	DJ Solar	DJS-T230P6PT	Polycrystalline	230	7.14*	27
45	DJ Solar	DJS-T250P6PT	Polycrystalline	240	7.14*	27
46	DJ Solar	DJS230S156P-60	Polycrystalline	230	7.09*	25
47	DJ Solar	DJS-T270P6PT	Polycrystalline	270	7.04*	23
48	DJ Solar	DJS220S156P-60	Polycrystalline	220	7.03*	22
49	DJ Solar	DJS-T180S6ST	Monocrystalline	180	7.02*	22
50	DJ Solar	DJS-T205S6ST	Monocrystalline	205	7.01*	22
51	DJ Solar	DJS-T245P6PT	Polycrystalline	245	7.00*	21
52	DJ Solar	DJS215S156P-60	Polycrystalline	215	6.99*	21
53	DJ Solar	DJS-T225P6PT	Polycrystalline	225	6.98*	20
54	DJ Solar	DJS175S125M-72	Monocrystalline	175	6.98*	20
55	DJ Solar	DJS-T265P6PT	Polycrystalline	265	6.90*	17
56	DJ Solar	DJS-T240P6PT	Polycrystalline	240	6.85*	16
57	DJ Solar	DJS-T220P6PT	Polycrystalline	220	6.82*	15
58	DJ Solar	DJS210S156P-60	Polycrystalline	210	6.82*	15
59	DJ Solar	DJS-T260P6PT	Polycrystalline	260	6.77*	13
60	DJ Solar	DJS-T215P6PT	Polycrystalline	215	6.66*	11
61	DJ Solar	DJS-T255P6PT	Polycrystalline	255	6.64*	10
62	DJ Solar	DJS-T210P6PT	Polycrystalline	210	6.52*	8

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* 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.