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 HC Solar Power

Here are the PSI Ratings for modules from HC Solar Power, 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	HC Solar Power	HCP195D-24	Monocrystalline	195	7.84*	67
2	HC Solar Power	HCP190D-24	Monocrystalline	190	7.64*	56
3	HC Solar Power	HCP240P-20	Polycrystalline	240	7.49*	47
4	HC Solar Power	HCP280P-24	Polycrystalline	280	7.36*	39
5	HC Solar Power	HCP235P-20	Polycrystalline	235	7.33*	37
6	HC Solar Power	HCP180D-24	Monocrystalline	180	7.28*	35
7	HC Solar Power	HCP275P-24	Polycrystalline	275	7.23*	32
8	HC Solar Power	HCP230P-20	Polycrystalline	230	7.18*	29
9	HC Solar Power	HCP270P-24	Polycrystalline	270	7.09*	25
10	HC Solar Power	HCP175D-24	Monocrystalline	175	7.09*	25
11	HC Solar Power	HCP265P-24	Polycrystalline	265	6.97*	20
12	HC Solar Power	HCP260P-24	Polycrystalline	260	6.81*	14
13	HC Solar Power	HCP255P-24	Polycrystalline	255	6.68*	11
14	HC Solar Power	HCP250P-24	Polycrystalline	250	6.55*	8
15	HC Solar Power	HCP245P-24	Polycrystalline	245	6.42*	6
16	HC Solar Power	HCP185D-24	Monocrystalline	185	6.26*	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.