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.

Subscribe to our email list

Before using the PSI Ratings, you should subscribe to our email list to receive important updates from the Principal Solar Institute.

PSI Ratings – PV Solar Modules from Econess Energy

Here are the PSI Ratings for modules from Econess 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	Econess Energy	EN125M-96-265	Monocrystalline	265	8.09*	79
2	Econess Energy	EN125M-72-200	Monocrystalline	200	8.02*	77
3	Econess Energy	EN156P-72-300	Polycrystalline	300	7.98*	74
4	Econess Energy	EN125M-96-260	Monocrystalline	260	7.93*	72
5	Econess Energy	EN156M-72-300	Monocrystalline	300	7.90*	70
6	Econess Energy	EN156M-60-250	Monocrystalline	250	7.89*	70
7	Econess Energy	EN156P-60-250	Polycrystalline	250	7.89*	70
8	Econess Energy	EN156P-72-295	Polycrystalline	295	7.85*	68
9	Econess Energy	EN125M-72-195	Monocrystalline	195	7.83*	67
10	Econess Energy	EN125M-96-255	Monocrystalline	255	7.78*	64
11	Econess Energy	EN156M-72-295	Monocrystalline	295	7.77*	64
12	Econess Energy	EN156M-60-245	Monocrystalline	245	7.74*	62
13	Econess Energy	EN156P-60-245	Polycrystalline	245	7.73*	62
14	Econess Energy	EN156P-72-290	Polycrystalline	290	7.71*	61
15	Econess Energy	EN156M-72-290	Monocrystalline	290	7.63*	55
16	Econess Energy	EN125M-72-190	Monocrystalline	190	7.63*	56
17	Econess Energy	EN125M-96-250	Monocrystalline	250	7.62*	55
18	Econess Energy	EN156P-72-285	Polycrystalline	285	7.58*	53
19	Econess Energy	EN156M-60-240	Monocrystalline	240	7.58*	53
20	Econess Energy	EN156P-60-240	Polycrystalline	240	7.57*	52
21	Econess Energy	EN156M-72-285	Monocrystalline	285	7.50*	48
22	Econess Energy	EN125M-96-245	Monocrystalline	245	7.48*	46
23	Econess Energy	EN125M-72-185	Monocrystalline	185	7.44*	44
24	Econess Energy	EN156P-72-280	Polycrystalline	280	7.44*	44
25	Econess Energy	EN156M-60-235	Monocrystalline	235	7.41*	42
26	Econess Energy	EN156P-60-235	Polycrystalline	235	7.41*	42
27	Econess Energy	EN156M-72-280	Monocrystalline	280	7.37*	40

---

* 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.