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 Global Photovoltaic Technology

Here are the PSI Ratings for modules from Zhejiang Global Photovoltaic 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 Global Photovoltaic Technology	GSM-305	Monocrystalline	305	7.65*	57
2	Zhejiang Global Photovoltaic Technology	GSM-250	Monocrystalline	250	7.61*	54
3	Zhejiang Global Photovoltaic Technology	GSM-300	Monocrystalline	300	7.49*	47
4	Zhejiang Global Photovoltaic Technology	GSP-285	Polycrystalline	285	7.48*	46
5	Zhejiang Global Photovoltaic Technology	GSP-240	Polycrystalline	240	7.47*	46
6	Zhejiang Global Photovoltaic Technology	GSM-245	Monocrystalline	245	7.43*	43
7	Zhejiang Global Photovoltaic Technology	GSM-295	Monocrystalline	295	7.38*	40
8	Zhejiang Global Photovoltaic Technology	GSP-280	Polycrystalline	280	7.36*	39
9	Zhejiang Global Photovoltaic Technology	GSP-235	Polycrystalline	235	7.33*	37
10	Zhejiang Global Photovoltaic Technology	GSM-240	Monocrystalline	240	7.27*	34
11	Zhejiang Global Photovoltaic Technology	GSM-290	Monocrystalline	290	7.24*	33
12	Zhejiang Global Photovoltaic Technology	GSP-275	Polycrystalline	275	7.21*	31
13	Zhejiang Global Photovoltaic Technology	GSP-230	Polycrystalline	230	7.15*	28
14	Zhejiang Global Photovoltaic Technology	GSM-285	Monocrystalline	285	7.14*	27
15	Zhejiang Global Photovoltaic Technology	GSM-235	Monocrystalline	235	7.12*	26
16	Zhejiang Global Photovoltaic Technology	GSM-180	Monocrystalline	180	7.10*	25
17	Zhejiang Global Photovoltaic Technology	GSP-270	Polycrystalline	270	7.09*	25
18	Zhejiang Global Photovoltaic Technology	GSM-280	Monocrystalline	280	7.00*	21
19	Zhejiang Global Photovoltaic Technology	GSP-265	Polycrystalline	265	6.97*	20
20	Zhejiang Global Photovoltaic Technology	GSM-175	Monocrystalline	175	6.90*	17
21	Zhejiang Global Photovoltaic Technology	GSM-275	Monocrystalline	275	6.88*	17
22	Zhejiang Global Photovoltaic Technology	GSM-170	Monocrystalline	170	6.70*	12
23	Zhejiang Global Photovoltaic Technology	GSM-165	Monocrystalline	165	6.51*	8
24	Zhejiang Global Photovoltaic Technology	GSM-160	Monocrystalline	160	6.31*	5
25	Zhejiang Global Photovoltaic Technology	GSM-155	Monocrystalline	155	6.12*	4

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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.