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 Shanghai ST Solar

Here are the PSI Ratings for modules from Shanghai ST 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	Shanghai ST Solar	STM200-72	Monocrystalline	200	7.93*	72
2	Shanghai ST Solar	STM285-104	Monocrystalline	285	7.86*	69
3	Shanghai ST Solar	STM260-96	Monocrystalline	260	7.84*	67
4	Shanghai ST Solar	STP250-60	Polycrystalline	250	7.84*	67
5	Shanghai ST Solar	STM350-130	Monocrystalline	350	7.79*	64
6	Shanghai ST Solar	STP300-72	Polycrystalline	300	7.77*	64
7	Shanghai ST Solar	STM195-72	Monocrystalline	195	7.73*	61
8	Shanghai ST Solar	STM280-104	Monocrystalline	280	7.72*	61
9	Shanghai ST Solar	STP245-60	Polycrystalline	245	7.69*	59
10	Shanghai ST Solar	STM345-130	Monocrystalline	345	7.69*	59
11	Shanghai ST Solar	STP225-54	Polycrystalline	225	7.68*	59
12	Shanghai ST Solar	STM255-96	Monocrystalline	255	7.67*	58
13	Shanghai ST Solar	STP295-72	Polycrystalline	295	7.64*	56
14	Shanghai ST Solar	STP200-48	Polycrystalline	200	7.63*	55
15	Shanghai ST Solar	STM275-104	Monocrystalline	275	7.59*	53
16	Shanghai ST Solar	STM340-130	Monocrystalline	340	7.57*	52
17	Shanghai ST Solar	STM250-96	Monocrystalline	250	7.53*	49
18	Shanghai ST Solar	STM190-72	Monocrystalline	190	7.52*	49
19	Shanghai ST Solar	STP290-72	Polycrystalline	290	7.52*	49
20	Shanghai ST Solar	STP240-60	Polycrystalline	240	7.52*	49
21	Shanghai ST Solar	STP220-54	Polycrystalline	220	7.51*	49
22	Shanghai ST Solar	STM335-130	Monocrystalline	335	7.45*	45
23	Shanghai ST Solar	STM270-104	Monocrystalline	270	7.44*	44
24	Shanghai ST Solar	STP195-48	Polycrystalline	195	7.44*	45
25	Shanghai ST Solar	STP285-72	Polycrystalline	285	7.39*	41
26	Shanghai ST Solar	STM245-96	Monocrystalline	245	7.37*	40
27	Shanghai ST Solar	STM185-72	Monocrystalline	185	7.37*	40
28	Shanghai ST Solar	STP235-60	Polycrystalline	235	7.36*	39
29	Shanghai ST Solar	STM330-130	Monocrystalline	330	7.35*	39
30	Shanghai ST Solar	STP215-54	Polycrystalline	215	7.33*	38
31	Shanghai ST Solar	STM265-104	Monocrystalline	265	7.31*	36
32	Shanghai ST Solar	STP280-72	Polycrystalline	280	7.26*	34
33	Shanghai ST Solar	STP190-48	Polycrystalline	190	7.24*	33
34	Shanghai ST Solar	STM260-104	Monocrystalline	260	7.23*	32
35	Shanghai ST Solar	STM240-96	Monocrystalline	240	7.23*	32
36	Shanghai ST Solar	STM325-130	Monocrystalline	325	7.23*	32
37	Shanghai ST Solar	STP230-60	Polycrystalline	230	7.21*	31
38	Shanghai ST Solar	STM180-72	Monocrystalline	180	7.17*	28
39	Shanghai ST Solar	STP210-54	Polycrystalline	210	7.17*	29
40	Shanghai ST Solar	STM235-96	Monocrystalline	235	7.14*	27
41	Shanghai ST Solar	STP275-72	Polycrystalline	275	7.13*	27
42	Shanghai ST Solar	STM255-104	Monocrystalline	255	7.08*	25
43	Shanghai ST Solar	STP185-48	Polycrystalline	185	7.06*	24
44	Shanghai ST Solar	STP225-60	Polycrystalline	225	7.03*	22
45	Shanghai ST Solar	STP205-54	Polycrystalline	205	7.00*	21
46	Shanghai ST Solar	STP270-72	Polycrystalline	270	7.00*	21
47	Shanghai ST Solar	STM175-72	Monocrystalline	175	6.97*	20
48	Shanghai ST Solar	STP220-60	Polycrystalline	220	6.88*	17
49	Shanghai ST Solar	STP180-48	Polycrystalline	180	6.88*	17
50	Shanghai ST Solar	STP265-72	Polycrystalline	265	6.87*	16
51	Shanghai ST Solar	STM170-72	Monocrystalline	170	6.84*	16
52	Shanghai ST Solar	STM225-96	Monocrystalline	225	6.82*	15
53	Shanghai ST Solar	STP200-54	Polycrystalline	200	6.82*	15
54	Shanghai ST Solar	STP260-72	Polycrystalline	260	6.74*	12
55	Shanghai ST Solar	STP215-60	Polycrystalline	215	6.73*	12
56	Shanghai ST Solar	STP175-48	Polycrystalline	175	6.68*	11
57	Shanghai ST Solar	STP195-54	Polycrystalline	195	6.65*	11
58	Shanghai ST Solar	STM165-72	Monocrystalline	165	6.64*	10
59	Shanghai ST Solar	STP255-72	Polycrystalline	255	6.62*	10
60	Shanghai ST Solar	STP210-60	Polycrystalline	210	6.56*	9
61	Shanghai ST Solar	STP170-48	Polycrystalline	170	6.50*	7
62	Shanghai ST Solar	STP190-54	Polycrystalline	190	6.48*	7
63	Shanghai ST Solar	STP250-72	Polycrystalline	250	6.47*	7
64	Shanghai ST Solar	STM160-72	Monocrystalline	160	6.44*	7
65	Shanghai ST Solar	STM210-96	Monocrystalline	210	6.40*	6
66	Shanghai ST Solar	STP245-72	Polycrystalline	245	6.35*	6
67	Shanghai ST Solar	STP185-54	Polycrystalline	185	6.32*	5
68	Shanghai ST Solar	STP165-48	Polycrystalline	165	6.30*	5
69	Shanghai ST Solar	STP160-48	Polycrystalline	160	6.11*	4

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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.