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 Wanxiang New Energy

Here are the PSI Ratings for modules from Wanxiang New Energy, 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	Wanxiang New Energy	WXS190P-US	Polycrystalline	190	8.40*	89
2	Wanxiang New Energy	WXS185P-US	Polycrystalline	185	8.19*	83
3	Wanxiang New Energy	WXS185S-US	Monocrystalline	185	7.98*	74
4	Wanxiang New Energy	WXS280P-US	Polycrystalline	280	7.96*	73
5	Wanxiang New Energy	WXS275P-US	Polycrystalline	275	7.80*	66
6	Wanxiang New Energy	WXS180P-US	Polycrystalline	180	7.79*	65
7	Wanxiang New Energy	WXS180S-US	Monocrystalline	180	7.77*	64
8	Wanxiang New Energy	WXS225P-US	Polycrystalline	225	7.75*	63
9	Wanxiang New Energy	WXS270P-US	Polycrystalline	270	7.67*	58
10	Wanxiang New Energy	WXS220P-US	Polycrystalline	220	7.58*	53
11	Wanxiang New Energy	WXS175S-US	Monocrystalline	175	7.55*	51
12	Wanxiang New Energy	WXS265P-US	Polycrystalline	265	7.53*	49
13	Wanxiang New Energy	WXS285P-US	Polycrystalline	285	7.48*	47
14	Wanxiang New Energy	WXS215P-US	Polycrystalline	215	7.42*	42
15	Wanxiang New Energy	WXS260P-US	Polycrystalline	260	7.39*	41
16	Wanxiang New Energy	WXS255P-US	Polycrystalline	255	7.25*	33
17	Wanxiang New Energy	WXS210P-US	Polycrystalline	210	7.25*	33
18	Wanxiang New Energy	WXS250P-US	Polycrystalline	250	7.10*	26
19	Wanxiang New Energy	WXS205P-US	Polycrystalline	205	7.07*	24
20	Wanxiang New Energy	WXS245P-US	Polycrystalline	245	6.96*	19
21	Wanxiang New Energy	WXS200P-US	Polycrystalline	200	6.89*	17
22	Wanxiang New Energy	WXS240P-US	Polycrystalline	240	6.83*	15
23	Wanxiang New Energy	WXS235P-US	Polycrystalline	235	6.75*	13
24	Wanxiang New Energy	WXS230P-US	Polycrystalline	230	6.60*	9

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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.