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 APOS Energy

Here are the PSI Ratings for modules from APOS Energy, 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	APOS Energy	AS240	Monocrystalline	240	7.48*	47
2	APOS Energy	AP 240M	Polycrystalline	240	7.44*	44
3	APOS Energy	AP 235M	Polycrystalline	235	7.35*	39
4	APOS Energy	AS190	Monocrystalline	190	7.34*	38
5	APOS Energy	AS235	Monocrystalline	235	7.33*	38
6	APOS Energy	AS215	Monocrystalline	215	7.31*	36
7	APOS Energy	AS145	Monocrystalline	145	7.31*	36
8	APOS Energy	AS230	Monocrystalline	230	7.21*	31
9	APOS Energy	AS185	Monocrystalline	185	7.21*	31
10	APOS Energy	AS210	Monocrystalline	210	7.18*	29
11	APOS Energy	AP 230M	Polycrystalline	230	7.15*	28
12	APOS Energy	AP230	Polycrystalline	230	7.13*	27
13	APOS Energy	AS140	Monocrystalline	140	7.10*	26
14	APOS Energy	AS225	Monocrystalline	225	7.06*	24
15	APOS Energy	AS205	Monocrystalline	205	7.05*	24
16	APOS Energy	AP185	Polycrystalline	185	7.05*	23
17	APOS Energy	AS180	Monocrystalline	180	7.00*	21
18	APOS Energy	AP205	Polycrystalline	205	6.98*	20
19	APOS Energy	AP 225M	Polycrystalline	225	6.98*	21
20	APOS Energy	AP140	Polycrystalline	140	6.96*	19
21	APOS Energy	AP225	Polycrystalline	225	6.94*	19
22	APOS Energy	AS220	Monocrystalline	220	6.94*	19
23	APOS Energy	AS135	Monocrystalline	135	6.90*	17
24	APOS Energy	AP180	Polycrystalline	180	6.87*	16
25	APOS Energy	AS200	Monocrystalline	200	6.85*	16
26	APOS Energy	AP200	Polycrystalline	200	6.81*	14
27	APOS Energy	AP 220M	Polycrystalline	220	6.81*	14
28	APOS Energy	AP220	Polycrystalline	220	6.76*	13
29	APOS Energy	AP 215M	Polycrystalline	215	6.69*	11
30	APOS Energy	AP175	Polycrystalline	175	6.69*	11
31	APOS Energy	AS195	Monocrystalline	195	6.68*	11
32	APOS Energy	AP135	Polycrystalline	135	6.68*	11
33	APOS Energy	AP215	Polycrystalline	215	6.67*	11
34	APOS Energy	AP195	Polycrystalline	195	6.63*	10
35	APOS Energy	AP 210M	Polycrystalline	210	6.53*	8
36	APOS Energy	AP 205M	Polycrystalline	205	6.52*	8
37	APOS Energy	AP130	Polycrystalline	130	6.52*	8
38	APOS Energy	AP210	Polycrystalline	210	6.51*	8
39	APOS Energy	AP 200M	Polycrystalline	200	6.50*	8
40	APOS Energy	AP190	Polycrystalline	190	6.47*	7

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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.