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 Luxor Solar

Here are the PSI Ratings for modules from Luxor Solar, 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	Luxor Solar	LX-260M/156-60+	Monocrystalline	260	8.07*	79
2	Luxor Solar	LX-255M/156-60+	Monocrystalline	255	7.91*	71
3	Luxor Solar	LX-300P/156-72+	Polycrystalline	300	7.88*	70
4	Luxor Solar	LX-300M/156-72+	Monocrystalline	300	7.86*	69
5	Luxor Solar	LX-250M/156-60+	Monocrystalline	250	7.76*	63
6	Luxor Solar	LX-195M/125-72+	Monocrystalline	195	7.72*	61
7	Luxor Solar	LX-290P/156-72+	Polycrystalline	290	7.62*	55
8	Luxor Solar	LX-245M/156-60+	Monocrystalline	245	7.60*	54
9	Luxor Solar	LX-290M/156-72+	Monocrystalline	290	7.59*	54
10	Luxor Solar	LX-190M/125-72+	Monocrystalline	190	7.51*	48
11	Luxor Solar	LX-240M/156-60+	Monocrystalline	240	7.47*	46
12	Luxor Solar	LX-240P/156-60+	Polycrystalline	240	7.45*	45
13	Luxor Solar	Solo Line 145M	Monocrystalline	145	7.37*	39
14	Luxor Solar	LX-280P/156-72+	Polycrystalline	280	7.36*	39
15	Luxor Solar	LX-280M/156-72+	Monocrystalline	280	7.34*	38
16	Luxor Solar	LX-235M/156-60+	Monocrystalline	235	7.33*	37
17	Luxor Solar	Solo Line 145P	Polycrystalline	145	7.32*	37
18	Luxor Solar	LX-185M/125-72+	Monocrystalline	185	7.31*	37
19	Luxor Solar	LX-235P/156-60+	Polycrystalline	235	7.31*	36
20	Luxor Solar	LX-275M/156-72+	Monocrystalline	275	7.25*	33
21	Luxor Solar	LX-275P/156-72+	Polycrystalline	275	7.23*	32
22	Luxor Solar	LX-230M/156-60+	Monocrystalline	230	7.19*	30
23	Luxor Solar	LX-230P/156-60+	Polycrystalline	230	7.17*	29
24	Luxor Solar	LX-180M/125-72+	Monocrystalline	180	7.13*	27
25	Luxor Solar	LX-270M/156-72+	Monocrystalline	270	7.12*	26
26	Luxor Solar	Solo Line 140M	Monocrystalline	140	7.11*	26
27	Luxor Solar	LX-270P/156-72+	Polycrystalline	270	7.10*	26
28	Luxor Solar	Solo Line 140P	Polycrystalline	140	7.07*	24
29	Luxor Solar	LX-225P/156-60+	Polycrystalline	225	7.00*	21
30	Luxor Solar	LX-265M/156-72+	Monocrystalline	265	6.99*	21
31	Luxor Solar	LX-265P/156-72+	Polycrystalline	265	6.97*	20
32	Luxor Solar	LX-260M/156-72+	Monocrystalline	260	6.86*	16
33	Luxor Solar	LX-220P/156-60+	Polycrystalline	220	6.85*	16
34	Luxor Solar	LX-260P/156-72+	Polycrystalline	260	6.84*	16

---

* 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.