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 Jiangsu Wanfeng PV

Here are the PSI Ratings for modules from Jiangsu Wanfeng PV, 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	Jiangsu Wanfeng PV	WF280P-02A	Polycrystalline	280	7.36*	39
2	Jiangsu Wanfeng PV	WF185M-01E	Monocrystalline	185	7.33*	38
3	Jiangsu Wanfeng PV	WF275P-02A	Polycrystalline	275	7.22*	32
4	Jiangsu Wanfeng PV	WF230P-02B	Polycrystalline	230	7.14*	27
5	Jiangsu Wanfeng PV	WF180M-01E	Monocrystalline	180	7.13*	27
6	Jiangsu Wanfeng PV	WF270P-02A	Polycrystalline	270	7.09*	25
7	Jiangsu Wanfeng PV	WF225P-02B	Polycrystalline	225	6.99*	21
8	Jiangsu Wanfeng PV	WF175M-01E	Monocrystalline	175	6.98*	21
9	Jiangsu Wanfeng PV	WF265P-02A	Polycrystalline	265	6.96*	19
10	Jiangsu Wanfeng PV	WF260P-02A	Polycrystalline	260	6.83*	16
11	Jiangsu Wanfeng PV	WF220P-02B	Polycrystalline	220	6.83*	15
12	Jiangsu Wanfeng PV	WF215P-02B	Polycrystalline	215	6.76*	13
13	Jiangsu Wanfeng PV	WF255P-02A	Polycrystalline	255	6.70*	12
14	Jiangsu Wanfeng PV	WF250P-02A	Polycrystalline	250	6.62*	10
15	Jiangsu Wanfeng PV	WF210P-02B	Polycrystalline	210	6.60*	9
16	Jiangsu Wanfeng PV	WF245P-02A	Polycrystalline	245	6.44*	7
17	Jiangsu Wanfeng PV	WF205P-02B	Polycrystalline	205	6.44*	7
18	Jiangsu Wanfeng PV	WF240P-02A	Polycrystalline	240	6.30*	5
19	Jiangsu Wanfeng PV	WF200P-02B	Polycrystalline	200	6.29*	5

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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.