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 Chinalight Haoyu Photovoltaic Technology (Beijing)

Here are the PSI Ratings for modules from Chinalight Haoyu Photovoltaic Technology (Beijing), 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	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS-250P	Polycrystalline	250	7.89*	70
2	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS-245P	Polycrystalline	245	7.73*	62
3	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS-240P	Polycrystalline	240	7.57*	52
4	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS-235P	Polycrystalline	235	7.42*	42
5	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS190P	Polycrystalline	190	7.37*	40
6	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS-230P	Polycrystalline	230	7.27*	34
7	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS185P	Polycrystalline	185	7.18*	29
8	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS180P	Polycrystalline	180	6.99*	21
9	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS-225P	Polycrystalline	225	6.94*	19
10	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS220P	Polycrystalline	220	6.79*	14
11	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS175P	Polycrystalline	175	6.73*	12
12	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS215P	Polycrystalline	215	6.64*	10
13	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS170P	Polycrystalline	170	6.54*	8
14	Chinalight Haoyu Photovoltaic Technology (Beijing)	CLS165P	Polycrystalline	165	6.35*	6

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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.