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 Zhejiang Guangyi Optical Energy Technology

Here are the PSI Ratings for modules from Zhejiang Guangyi Optical Energy Technology, 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	Zhejiang Guangyi Optical Energy Technology	GYP-150M	Monocrystalline	150	7.97*	74
2	Zhejiang Guangyi Optical Energy Technology	GYP-250M	Monocrystalline	250	7.65*	57
3	Zhejiang Guangyi Optical Energy Technology	GYP-290M	Monocrystalline	290	7.61*	54
4	Zhejiang Guangyi Optical Energy Technology	GYP-285P	Polycrystalline	285	7.61*	55
5	Zhejiang Guangyi Optical Energy Technology	GYP-245M	Monocrystalline	245	7.50*	48
6	Zhejiang Guangyi Optical Energy Technology	GYP-280P	Polycrystalline	280	7.48*	47
7	Zhejiang Guangyi Optical Energy Technology	GYP-185M	Monocrystalline	185	7.43*	44
8	Zhejiang Guangyi Optical Energy Technology	GYP-210P	Polycrystalline	210	7.38*	40
9	Zhejiang Guangyi Optical Energy Technology	GYP-185P	Polycrystalline	185	7.36*	39
10	Zhejiang Guangyi Optical Energy Technology	GYP-280M	Monocrystalline	280	7.34*	38
11	Zhejiang Guangyi Optical Energy Technology	GYP-240M	Monocrystalline	240	7.34*	38
12	Zhejiang Guangyi Optical Energy Technology	GYP-230P	Polycrystalline	230	7.26*	34
13	Zhejiang Guangyi Optical Energy Technology	GYP-180M	Monocrystalline	180	7.23*	32
14	Zhejiang Guangyi Optical Energy Technology	GYP-270P	Polycrystalline	270	7.21*	31
15	Zhejiang Guangyi Optical Energy Technology	GYP-235M	Monocrystalline	235	7.19*	30
16	Zhejiang Guangyi Optical Energy Technology	GYP-180P	Polycrystalline	180	7.14*	27
17	Zhejiang Guangyi Optical Energy Technology	GYP-225P	Polycrystalline	225	7.11*	26
18	Zhejiang Guangyi Optical Energy Technology	GYP-200P	Polycrystalline	200	7.10*	26
19	Zhejiang Guangyi Optical Energy Technology	GYP-265P	Polycrystalline	265	7.08*	25
20	Zhejiang Guangyi Optical Energy Technology	GYP-270M	Monocrystalline	270	7.07*	24
21	Zhejiang Guangyi Optical Energy Technology	GYP-230M	Monocrystalline	230	7.04*	23
22	Zhejiang Guangyi Optical Energy Technology	GYP-220P	Polycrystalline	220	6.95*	19
23	Zhejiang Guangyi Optical Energy Technology	GYP-175P	Polycrystalline	175	6.92*	18
24	Zhejiang Guangyi Optical Energy Technology	GYP-190P	Polycrystalline	190	6.74*	12
25	Zhejiang Guangyi Optical Energy Technology	GYP-170P	Polycrystalline	170	6.69*	11

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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.