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 Ningbo Ulica Solar Science & Technology

Here are the PSI Ratings for modules from Ningbo Ulica Solar Science & 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	Ningbo Ulica Solar Science & Technology	UL-295P	Polycrystalline	295	11.11	100
2	Ningbo Ulica Solar Science & Technology	UL-290P	Polycrystalline	290	10.93	100
3	Ningbo Ulica Solar Science & Technology	UL-285P	Polycrystalline	285	10.74	100
4	Ningbo Ulica Solar Science & Technology	UL-295D	Monocrystalline	295	10.55	100
5	Ningbo Ulica Solar Science & Technology	UL-290D	Monocrystalline	290	10.38	100
6	Ningbo Ulica Solar Science & Technology	UL-285D	Monocrystalline	285	10.21	99
7	Ningbo Ulica Solar Science & Technology	UL-280D	Monocrystalline	280	10.03	99
8	Ningbo Ulica Solar Science & Technology	UL-280P	Polycrystalline	280	10.01	99
9	Ningbo Ulica Solar Science & Technology	UL-275D	Monocrystalline	275	9.83	99
10	Ningbo Ulica Solar Science & Technology	UL-275P	Polycrystalline	275	9.82	99
11	Ningbo Ulica Solar Science & Technology	UL-250D	Monocrystalline	250	8.77	95
12	Ningbo Ulica Solar Science & Technology	UL-300D	Monocrystalline	300	8.61	93
13	Ningbo Ulica Solar Science & Technology	UL-245P	Polycrystalline	245	8.53	92
14	Ningbo Ulica Solar Science & Technology	UL-240P	Polycrystalline	240	8.36	88
15	Ningbo Ulica Solar Science & Technology	UL-190D	Monocrystalline	190	8.30	87
16	Ningbo Ulica Solar Science & Technology	UL-235P	Polycrystalline	235	8.18	83
17	Ningbo Ulica Solar Science & Technology	UL-250P	Polycrystalline	250	8.11*	80
18	Ningbo Ulica Solar Science & Technology	UL-245D	Monocrystalline	245	8.01*	76
19	Ningbo Ulica Solar Science & Technology	UL-230P	Polycrystalline	230	8.00	76
20	Ningbo Ulica Solar Science & Technology	UL-240D	Monocrystalline	240	7.98	74
21	Ningbo Ulica Solar Science & Technology	UL-260D-96	Monocrystalline	260	7.74	62
22	Ningbo Ulica Solar Science & Technology	UL-235D	Monocrystalline	235	7.68*	58
23	Ningbo Ulica Solar Science & Technology	UL-230D	Monocrystalline	230	7.65	57
24	Ningbo Ulica Solar Science & Technology	UL-185D	Monocrystalline	185	7.65	57
25	Ningbo Ulica Solar Science & Technology	UL-255D-96	Monocrystalline	255	7.57	52
26	Ningbo Ulica Solar Science & Technology	UL-180D	Monocrystalline	180	7.45	45
27	Ningbo Ulica Solar Science & Technology	UL-250D-96	Monocrystalline	250	7.42	42
28	Ningbo Ulica Solar Science & Technology	UL-245D-96	Monocrystalline	245	6.86	16
29	Ningbo Ulica Solar Science & Technology	UL-240D-96	Monocrystalline	240	6.70	12
30	Ningbo Ulica Solar Science & Technology	165(35) D UL811x1581	Monocrystalline	165	6.37*	6
31	Ningbo Ulica Solar Science & Technology	230(35) D UL997x1953	Monocrystalline	230	5.89*	3

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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.