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 Solar Electric Power

Here are the PSI Ratings for modules from Ningbo Solar Electric Power, 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 Solar Electric Power	TPB156x156-72-P 280W	Polycrystalline	280	7.32*	37
2	Ningbo Solar Electric Power	TPB156x156-60-P 230W	Polycrystalline	230	7.21*	31
3	Ningbo Solar Electric Power	TPB125x125-72-P 180W	Polycrystalline	180	7.20*	30
4	Ningbo Solar Electric Power	TDB125x125-72-P 180W	Monocrystalline	180	7.15*	28
5	Ningbo Solar Electric Power	TPB156x156-72-P 270W	Polycrystalline	270	7.06*	24
6	Ningbo Solar Electric Power	TPB125x125-96-P 240W	Polycrystalline	240	7.05*	24
7	Ningbo Solar Electric Power	TPB156x156-60-P 225W	Polycrystalline	225	7.04*	23
8	Ningbo Solar Electric Power	TPB125x125-72-P 175W	Polycrystalline	175	7.00*	22
9	Ningbo Solar Electric Power	TPB156x156-54-P 200W	Polycrystalline	200	6.96*	19
10	Ningbo Solar Electric Power	TDB125x125-72-P 175W	Monocrystalline	175	6.95*	19
11	Ningbo Solar Electric Power	TPB156x156-60-P 220W	Polycrystalline	220	6.90*	17
12	Ningbo Solar Electric Power	TPB156x156-54-P 195W	Polycrystalline	195	6.86*	16
13	Ningbo Solar Electric Power	TPB125x125-72-P 170W	Polycrystalline	170	6.81*	14
14	Ningbo Solar Electric Power	TDB125x125-72-P 170W	Monocrystalline	170	6.81*	14
15	Ningbo Solar Electric Power	TPB156x156-72-P 260W	Polycrystalline	260	6.80*	14
16	Ningbo Solar Electric Power	TPB125x125-96-P 230W	Polycrystalline	230	6.75*	13
17	Ningbo Solar Electric Power	TPB156x156-60-P 215W	Polycrystalline	215	6.71*	12
18	Ningbo Solar Electric Power	TPB156x156-72-P 255W	Polycrystalline	255	6.67*	11
19	Ningbo Solar Electric Power	TPB156x156-54-P 190W	Polycrystalline	190	6.61*	9
20	Ningbo Solar Electric Power	TDB125x125-72-P 165W	Monocrystalline	165	6.60*	9
21	Ningbo Solar Electric Power	TPB125x125-72-P 165W	Polycrystalline	165	6.59*	9
22	Ningbo Solar Electric Power	TPB156x156-72-P 250W	Polycrystalline	250	6.55*	8
23	Ningbo Solar Electric Power	TPB156x156-60-P 210W	Polycrystalline	210	6.55*	8
24	Ningbo Solar Electric Power	TPB125x125-96-P 220W	Polycrystalline	220	6.46*	7
25	Ningbo Solar Electric Power	TPB156x156-60-P 205W	Polycrystalline	205	6.40*	6
26	Ningbo Solar Electric Power	TPB156x156-54-P 185W	Polycrystalline	185	6.39*	6
27	Ningbo Solar Electric Power	TPB156x156-72-P 240W	Polycrystalline	240	6.37*	6
28	Ningbo Solar Electric Power	TPB125x125-72-P 160W	Polycrystalline	160	6.37*	6
29	Ningbo Solar Electric Power	TPB125x125-72-P 155W	Polycrystalline	155	6.26*	5
30	Ningbo Solar Electric Power	TPB156x156-60-P 200W	Polycrystalline	200	6.24*	5
31	Ningbo Solar Electric Power	TPB156x156-54-P 180W	Polycrystalline	180	6.23*	5
32	Ningbo Solar Electric Power	TPB156x156-72-P 230W	Polycrystalline	230	6.10*	4
33	Ningbo Solar Electric Power	TDB125x125-72-P 160W	Monocrystalline	160	6.09*	4
34	Ningbo Solar Electric Power	TPB125x125-96-P 210W	Polycrystalline	210	6.08*	3
35	Ningbo Solar Electric Power	TPB125x125-72-P 150W	Polycrystalline	150	6.07*	3
36	Ningbo Solar Electric Power	TDB125x125-72-P 155W	Monocrystalline	155	5.90*	3
37	Ningbo Solar Electric Power	TPB125x125-96-P 200W	Polycrystalline	200	5.80*	3
38	Ningbo Solar Electric Power	TDB125x125-72-P 150W	Monocrystalline	150	5.71*	2

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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.