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 Solar Frontier

Here are the PSI Ratings for modules from Solar Frontier, 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	Solar Frontier	SF175-S	Thin Film	175	8.92*	96
2	Solar Frontier	SF170-S	Thin Film	170	8.72*	94
3	Solar Frontier	SF165-S	Thin Film	165	8.41*	89
4	Solar Frontier	SF160-S	Thin Film	160	8.19*	83
5	Solar Frontier	SF155-L	Thin Film	155	7.87*	69
6	Solar Frontier	SF155-T	Thin Film	155	7.87*	69
7	Solar Frontier	SF155-S	Thin Film	155	7.83*	67
8	Solar Frontier	SF150-S	Thin Film	150	7.71*	60
9	Solar Frontier	SF150-L	Thin Film	150	7.68*	59
10	Solar Frontier	SF150-T	Thin Film	150	7.68*	59
11	Solar Frontier	SF145-S	Thin Film	145	7.45*	45
12	Solar Frontier	SF145-T	Thin Film	145	7.42*	42
13	Solar Frontier	SF145-L	Thin Film	145	7.42*	42
14	Solar Frontier	SF140-S	Thin Film	140	7.19*	30
15	Solar Frontier	SF140-T	Thin Film	140	7.19*	30
16	Solar Frontier	SF140-L	Thin Film	140	7.19*	30
17	Solar Frontier	SF135-L	Thin Film	135	6.94*	19
18	Solar Frontier	SF135-T	Thin Film	135	6.94*	19
19	Solar Frontier	SF135-S	Thin Film	135	6.93*	18
20	Solar Frontier	SF90-US-B	Thin Film	90	6.75*	13
21	Solar Frontier	SF130-T	Thin Film	130	6.72*	12
22	Solar Frontier	SF130-L	Thin Film	130	6.72*	12
23	Solar Frontier	SF130-S	Thin Film	130	6.70*	12
24	Solar Frontier	SF85-US-P	Thin Film	85	6.38*	6
25	Solar Frontier	SF85-US-B	Thin Film	85	6.38*	6
26	Solar Frontier	SC80-US-P	Thin Film	80	5.83*	3
27	Solar Frontier	SF80-US-P	Thin Film	80	5.83*	3
28	Solar Frontier	SF80-US-B	Thin Film	80	5.83*	3
29	Solar Frontier	SF75-US-B	Thin Film	75	5.36*	2
30	Solar Frontier	SF75-US-P	Thin Film	75	5.36*	2
31	Solar Frontier	SC75-US-P	Thin Film	75	5.36*	2
32	Solar Frontier	SC70-US-P	Thin Film	70	4.92*	1
33	Solar Frontier	SF70-US-B	Thin Film	70	4.92*	1
34	Solar Frontier	SF70-US-P	Thin Film	70	4.92*	1

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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.