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 Changzhou Nesl Solartech

Here are the PSI Ratings for modules from Changzhou Nesl Solartech, 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	Changzhou Nesl Solartech	DJ-310D/C	Monocrystalline	310	8.24*	85
2	Changzhou Nesl Solartech	DJ-305D/C	Monocrystalline	305	8.12*	80
3	Changzhou Nesl Solartech	DJ-255D/C	Monocrystalline	255	8.06*	78
4	Changzhou Nesl Solartech	DJ-255D/C-ST15	Monocrystalline	255	8.06*	78
5	Changzhou Nesl Solartech	DJ-300P	Polycrystalline	300	7.99*	75
6	Changzhou Nesl Solartech	DJ-200D	Monocrystalline	200	7.99*	75
7	Changzhou Nesl Solartech	DJ-300D/C	Monocrystalline	300	7.98*	74
8	Changzhou Nesl Solartech	DJ-250DA/C-ST15	Monocrystalline	250	7.90*	70
9	Changzhou Nesl Solartech	DJ-250DA/C	Monocrystalline	250	7.90*	71
10	Changzhou Nesl Solartech	DJ-295P	Polycrystalline	295	7.85*	68
11	Changzhou Nesl Solartech	DJ-295D/C	Monocrystalline	295	7.84*	68
12	Changzhou Nesl Solartech	DJ-195D	Monocrystalline	195	7.80*	66
13	Changzhou Nesl Solartech	DJ-245DA/C-ST15	Monocrystalline	245	7.74*	62
14	Changzhou Nesl Solartech	DJ-245DA/C	Monocrystalline	245	7.74*	62
15	Changzhou Nesl Solartech	DJ-290D/C	Monocrystalline	290	7.72*	61
16	Changzhou Nesl Solartech	DJ-290P	Polycrystalline	290	7.72*	61
17	Changzhou Nesl Solartech	DJ-190D	Monocrystalline	190	7.64*	56
18	Changzhou Nesl Solartech	DJ-280P	Polycrystalline	280	7.61*	55
19	Changzhou Nesl Solartech	DJ-240DA/C-ST15	Monocrystalline	240	7.58*	53
20	Changzhou Nesl Solartech	DJ-285P	Polycrystalline	285	7.58*	53
21	Changzhou Nesl Solartech	DJ-240DA/C	Monocrystalline	240	7.58*	53
22	Changzhou Nesl Solartech	DJ-240PA	Polycrystalline	240	7.54*	50
23	Changzhou Nesl Solartech	DJ-230P-ST15	Polycrystalline	230	7.44*	44
24	Changzhou Nesl Solartech	DJ-230P	Polycrystalline	230	7.44*	44
25	Changzhou Nesl Solartech	DJ-185D	Monocrystalline	185	7.43*	44
26	Changzhou Nesl Solartech	DJ-270P	Polycrystalline	270	7.40*	41
27	Changzhou Nesl Solartech	DJ-235P	Polycrystalline	235	7.38*	40
28	Changzhou Nesl Solartech	DJ-235P-ST15	Polycrystalline	235	7.38*	40
29	Changzhou Nesl Solartech	DJ-180D	Monocrystalline	180	7.17*	28
30	Changzhou Nesl Solartech	DJ-175D	Monocrystalline	175	6.97*	20
31	Changzhou Nesl Solartech	DJ-260P	Polycrystalline	260	6.83*	15
32	Changzhou Nesl Solartech	DJ-220P	Polycrystalline	220	6.81*	15
33	Changzhou Nesl Solartech	DJ-170D	Monocrystalline	170	6.63*	10
34	Changzhou Nesl Solartech	DJ-250P	Polycrystalline	250	6.62*	10
35	Changzhou Nesl Solartech	DJ-165D	Monocrystalline	165	6.53*	8
36	Changzhou Nesl Solartech	DJ-210P	Polycrystalline	210	6.50*	8
37	Changzhou Nesl Solartech	DJ-240P	Polycrystalline	240	6.50*	8
38	Changzhou Nesl Solartech	DJ-240P-ST15	Polycrystalline	240	6.50*	8
39	Changzhou Nesl Solartech	DJ-200P	Polycrystalline	200	6.19*	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.