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 SOLON

Here are the PSI Ratings for modules from SOLON, 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	SOLON	SOLquick Black XT 295	Monocrystalline	295	8.20*	83
2	SOLON	SOLON Black XT 295	Monocrystalline	295	8.20*	83
3	SOLON	SOLON Black 280/09 300	Monocrystalline	300	8.14*	81
4	SOLON	SOLON Black 245	Monocrystalline	245	8.09*	79
5	SOLON	SOLON Blue 240	Polycrystalline	240	8.09*	79
6	SOLON	SOLquick Black XT 290	Monocrystalline	290	8.06*	78
7	SOLON	SOLON Black XT 290	Monocrystalline	290	8.06*	78
8	SOLON	SOLON Black 280/09 295	Monocrystalline	295	8.00*	75
9	SOLON	SOLON Blue 220/01 240	Polycrystalline	240	7.95*	73
10	SOLON	SOLON Blue 270/09 290	Polycrystalline	290	7.95*	73
11	SOLON	SOLquick Blue XT 285	Polycrystalline	285	7.93*	72
12	SOLON	SOLON Blue XT 285	Polycrystalline	285	7.93*	72
13	SOLON	SOLON Black XT 285	Monocrystalline	285	7.92*	71
14	SOLON	SOLquick Black XT 285	Monocrystalline	285	7.92*	71
15	SOLON	SOLON Black 240	Monocrystalline	240	7.92*	72
16	SOLON	SOLON Blue 235	Polycrystalline	235	7.91*	71
17	SOLON	SOLON Black 230/01 240	Monocrystalline	240	7.87*	70
18	SOLON	SOLON Black 280/09 290	Monocrystalline	290	7.86*	69
19	SOLON	SOLON Corvus 240	Monocrystalline	240	7.84*	68
20	SOLON	SOLON Blue 270/09 285	Polycrystalline	285	7.80*	65
21	SOLON	SOLON Blue XT 280	Polycrystalline	280	7.78*	64
22	SOLON	SOLquick Blue XT 280	Polycrystalline	280	7.78*	64
23	SOLON	SOLON Blue 220/01 235	Polycrystalline	235	7.77*	64
24	SOLON	SOLquick Black XT 280	Monocrystalline	280	7.77*	64
25	SOLON	SOLON Black XT 280	Monocrystalline	280	7.77*	64
26	SOLON	SOLON Blue 230	Polycrystalline	230	7.75*	63
27	SOLON	SOLON Black 235	Monocrystalline	235	7.74*	62
28	SOLON	SOLON Black 280/09 280	Monocrystalline	280	7.73*	62
29	SOLON	SOLON Black 280/09 285	Monocrystalline	285	7.72*	61
30	SOLON	SOLON Black 230/01 235	Monocrystalline	235	7.71*	60
31	SOLON	SOLON Black 230/15 240	Monocrystalline	240	7.71*	60
32	SOLON	SOLON Corvus 235	Monocrystalline	235	7.67*	58
33	SOLON	SOLON Blue 270/09 280	Polycrystalline	280	7.66*	57
34	SOLON	SOLON Blue XT 275	Polycrystalline	275	7.64*	56
35	SOLON	SOLON Black XT 275	Monocrystalline	275	7.62*	55
36	SOLON	SOLON Blue 220/01 230	Polycrystalline	230	7.61*	55
37	SOLON	SOLON Black 280/09 275	Monocrystalline	275	7.59*	53
38	SOLON	SOLON Black 230	Monocrystalline	230	7.58*	53
39	SOLON	SOLON Blue 225	Polycrystalline	225	7.57*	52
40	SOLON	SOLON Black 230/01 230	Monocrystalline	230	7.55*	51
41	SOLON	SOLON Black 230/15 235	Monocrystalline	235	7.55*	51
42	SOLON	SOLON Blue 270/09 275	Polycrystalline	275	7.53*	49
43	SOLON	SOLON Corvus 230	Monocrystalline	230	7.51*	48
44	SOLON	SOLON Blue XT 270	Polycrystalline	270	7.51*	48
45	SOLON	SOLON Blue 220/01 225	Polycrystalline	225	7.48*	46
46	SOLON	SOLON Blue 270/09 270	Polycrystalline	270	7.48*	46
47	SOLON	SOLON Black 280/09 270	Monocrystalline	270	7.45*	45
48	SOLON	SOLON Black 225	Monocrystalline	225	7.42*	43
49	SOLON	SOLON Blue 220	Polycrystalline	220	7.41*	42
50	SOLON	SOLON Black 230/01 225	Monocrystalline	225	7.38*	40
51	SOLON	SOLON Black 230/15 230	Monocrystalline	230	7.38*	40
52	SOLON	SOLON Blue XT 265	Polycrystalline	265	7.36*	39
53	SOLON	SOLON Blue 270/09 265	Polycrystalline	265	7.35*	38
54	SOLON	SOLON Corvus 225	Monocrystalline	225	7.34*	38
55	SOLON	SOLON Blue 220/01 220	Polycrystalline	220	7.32*	37
56	SOLON	SOLON Black 280/09 265	Monocrystalline	265	7.31*	36
57	SOLON	SOLquick Blue XT-H 280	Polycrystalline	280	7.25*	33
58	SOLON	SOLON Black 230/15 225	Monocrystalline	225	7.22*	32
59	SOLON	SOLON Blue 270/09 260	Polycrystalline	260	7.19*	30
60	SOLON	SOLON Blue 220/01 215	Polycrystalline	215	7.14*	27
61	SOLON	SOLON Blue 270/09 255	Polycrystalline	255	7.06*	24
62	SOLON	SOLON Blue 270/09 250	Polycrystalline	250	6.92*	18

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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.