Principal Solar Institute

A community for development and installation professionals in the solar industry

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 Lumos

Here are the PSI Ratings for modules from Lumos, 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	Lumos	LS285-60M-SFS	Monocrystalline	285	8.98*	96
2	Lumos	LS285-60M-SF	Monocrystalline	285	8.98*	96
3	Lumos	LS335-72M-SF	Monocrystalline	335	8.88*	96
4	Lumos	LS335-72M-SFS	Monocrystalline	335	8.88*	96
5	Lumos	LS280-60M-SF	Monocrystalline	280	8.85*	95
6	Lumos	LS280-60M-SFS	Monocrystalline	280	8.85*	95
7	Lumos	LS330-72M-SFS	Monocrystalline	330	8.75*	94
8	Lumos	LS330-72M-SF	Monocrystalline	330	8.75*	94
9	Lumos	LS275-60M-SF	Monocrystalline	275	8.71*	94
10	Lumos	LS275-60M-SFS	Monocrystalline	275	8.71*	94
11	Lumos	LS325-72M-SF	Monocrystalline	325	8.62*	93
12	Lumos	LS325-72M-SFS	Monocrystalline	325	8.62*	93
13	Lumos	LS270-60M-SFS	Monocrystalline	270	8.56*	92
14	Lumos	LS270-60M-SF	Monocrystalline	270	8.56*	92
15	Lumos	LS320-72M-SFS	Monocrystalline	320	8.48*	91
16	Lumos	LS320-72M-SF	Monocrystalline	320	8.48*	91
17	Lumos	LS320-72P-SF	Polycrystalline	320	8.45*	90
18	Lumos	LS320-72P-SFS	Polycrystalline	320	8.45*	90
19	Lumos	LS265-60M-SFS	Monocrystalline	265	8.40*	89
20	Lumos	LS265-60M-SF	Monocrystalline	265	8.40*	89
21	Lumos	LS315-72M-SFS	Monocrystalline	315	8.35*	88
22	Lumos	LS205-72M-J	Monocrystalline	205	8.35*	88
23	Lumos	LS315-72M-SF	Monocrystalline	315	8.35*	88
24	Lumos	LS315-72P-SF	Polycrystalline	315	8.31*	87
25	Lumos	LS315-72P-SFS	Polycrystalline	315	8.31*	87
26	Lumos	LS265-60P-SF	Polycrystalline	265	8.30*	87
27	Lumos	LS265-60P-SFS	Polycrystalline	265	8.30*	87
28	Lumos	LS260-60M-SFS	Monocrystalline	260	8.25*	85
29	Lumos	LS260-60M-SF	Monocrystalline	260	8.25*	85
30	Lumos	LS260-60P-SFS	Polycrystalline	260	8.19*	83
31	Lumos	LS260-60P-SF	Polycrystalline	260	8.19*	83
32	Lumos	LS310-72P-SFS	Polycrystalline	310	8.18*	83
33	Lumos	LS310-72P-SF	Polycrystalline	310	8.18*	83
34	Lumos	LS200-72M-J	Monocrystalline	200	8.13*	81
35	Lumos	LS305-72M-J	Monocrystalline	305	8.05*	77
36	Lumos	LS305-72P-SF	Polycrystalline	305	8.05*	78
37	Lumos	LS305-72P-SFS	Polycrystalline	305	8.05*	78
38	Lumos	LS255-60P-SFS	Polycrystalline	255	7.99*	75
39	Lumos	LS255-60P-SF	Polycrystalline	255	7.99*	75
40	Lumos	LS195-72M-J	Monocrystalline	195	7.93*	72
41	Lumos	LS300-72P-SF	Polycrystalline	300	7.92*	72
42	Lumos	LS300-72P-SFS	Polycrystalline	300	7.92*	72
43	Lumos	LS300-72M-J	Monocrystalline	300	7.91*	71
44	Lumos	LS250-60M	Monocrystalline	250	7.90*	71
45	Lumos	LS250-60P-SF	Polycrystalline	250	7.87*	69
46	Lumos	LS250-60P-SFS	Polycrystalline	250	7.87*	69
47	Lumos	LS245PB	Polycrystalline	245	7.83*	67
48	Lumos	LS245PC	Polycrystalline	245	7.83*	67
49	Lumos	LS250-60M-J	Monocrystalline	250	7.79*	65
50	Lumos	LS300-72M-A1	Monocrystalline	300	7.79*	65
51	Lumos	LS295-72P-SF	Polycrystalline	295	7.79*	65
52	Lumos	LS295-72P-SFS	Polycrystalline	295	7.79*	65
53	Lumos	LS295-72M-J	Monocrystalline	295	7.78*	64
54	Lumos	LS250-60M-B	Monocrystalline	250	7.77*	64
55	Lumos	LS290-72M-J	Monocrystalline	290	7.76*	63
56	Lumos	LS245-60M	Monocrystalline	245	7.74*	62
57	Lumos	LS245-60P-SFS	Polycrystalline	245	7.72*	61
58	Lumos	LS245-60P-SF	Polycrystalline	245	7.72*	61
59	Lumos	LS190-72M-J	Monocrystalline	190	7.72*	61
60	Lumos	LS295-72P-J	Polycrystalline	295	7.71*	60
61	Lumos	LS240PC	Polycrystalline	240	7.71*	60
62	Lumos	LS240PB	Polycrystalline	240	7.71*	60
63	Lumos	LS245-60M-J	Monocrystalline	245	7.69*	59
64	Lumos	LS295-72M-A1	Monocrystalline	295	7.67*	58
65	Lumos	LSX200-72M-B	Monocrystalline	200	7.67*	58
66	Lumos	LS290-72P-SFS	Polycrystalline	290	7.66*	57
67	Lumos	LS290-72P-SF	Polycrystalline	290	7.66*	57
68	Lumos	LS300-72M	Monocrystalline	300	7.66*	58
69	Lumos	LS285-72M-J	Monocrystalline	285	7.63*	56
70	Lumos	LS245-60P-J	Polycrystalline	245	7.63*	56
71	Lumos	LS250-60M-A1	Monocrystalline	250	7.62*	55
72	Lumos	LS305-72M-B	Monocrystalline	305	7.62*	55
73	Lumos	SST225-54M-BB	Monocrystalline	225	7.61*	55
74	Lumos	LS240-60M	Monocrystalline	240	7.59*	53
75	Lumos	LS290-72P-J	Polycrystalline	290	7.58*	53
76	Lumos	LS285-72M	Monocrystalline	285	7.57*	52
77	Lumos	LS200-72M-B	Monocrystalline	200	7.57*	52
78	Lumos	SST225-54M	Monocrystalline	225	7.56*	51
79	Lumos	LS240-60M-J	Monocrystalline	240	7.54*	50
80	Lumos	LS295-72M	Monocrystalline	295	7.53*	49
81	Lumos	LS185-72M-J	Monocrystalline	185	7.52*	49
82	Lumos	LS245-60M-A1	Monocrystalline	245	7.52*	49
83	Lumos	LS235PB	Polycrystalline	235	7.51*	48
84	Lumos	LS235PC	Polycrystalline	235	7.51*	48
85	Lumos	LS280-72M-J	Monocrystalline	280	7.49*	48
86	Lumos	LSX195-72M-B	Monocrystalline	195	7.48*	47
87	Lumos	LS300-72M-B	Monocrystalline	300	7.47*	46
88	Lumos	LS240-60M-B	Monocrystalline	240	7.47*	46
89	Lumos	SST240-60P	Polycrystalline	240	7.46*	46
90	Lumos	LS240-60P-J	Polycrystalline	240	7.46*	46
91	Lumos	LS290-72P	Polycrystalline	290	7.46*	45
92	Lumos	SST220-54M-BB	Monocrystalline	220	7.45*	45
93	Lumos	LS285-72P-J	Polycrystalline	285	7.45*	45
94	Lumos	SST295-72M-BB	Monocrystalline	295	7.45*	45
95	Lumos	LS190-72M	Monocrystalline	190	7.44*	44
96	Lumos	SST245-60M-BB	Monocrystalline	245	7.43*	43
97	Lumos	LS235-60M	Monocrystalline	235	7.43*	43
98	Lumos	LS280-72M	Monocrystalline	280	7.43*	44
99	Lumos	LS290-72M	Monocrystalline	290	7.41*	42
100	Lumos	LSX250-60M-C	Monocrystalline	250	7.41*	42
101	Lumos	LSX250-60M-B	Monocrystalline	250	7.40*	41
102	Lumos	LS230-60M	Monocrystalline	230	7.40*	41
103	Lumos	SST220-54M	Monocrystalline	220	7.39*	41
104	Lumos	LS195-72M-B	Monocrystalline	195	7.39*	41
105	Lumos	LS235-60M-J	Monocrystalline	235	7.38*	40
106	Lumos	LSX250-60M-W	Monocrystalline	250	7.38*	40
107	Lumos	LS185-72M	Monocrystalline	185	7.37*	40
108	Lumos	LS275-72M-J	Monocrystalline	275	7.36*	39
109	Lumos	LS240-60P-B	Polycrystalline	240	7.35*	38
110	Lumos	LSX200-72M-W	Monocrystalline	200	7.34*	38
111	Lumos	LSX200-72M-C	Monocrystalline	200	7.33*	38
112	Lumos	LS285-72P	Polycrystalline	285	7.33*	37
113	Lumos	SST290-72M-BB	Monocrystalline	290	7.33*	38
114	Lumos	LS280-72P-J	Polycrystalline	280	7.32*	37
115	Lumos	LS275-72M	Monocrystalline	275	7.31*	36
116	Lumos	LS235-60P-J	Polycrystalline	235	7.30*	36
117	Lumos	LSX190-72M-B	Monocrystalline	190	7.29*	35
118	Lumos	SST235-60P	Polycrystalline	235	7.29*	35
119	Lumos	SST240-60M-BB	Monocrystalline	240	7.28*	35
120	Lumos	SST215-54M-BB	Monocrystalline	215	7.27*	34
121	Lumos	LSX245-60M-C	Monocrystalline	245	7.26*	34
122	Lumos	LSX245-60M-B	Monocrystalline	245	7.26*	34
123	Lumos	LS225-60M	Monocrystalline	225	7.24*	33
124	Lumos	LSX245-60M-W	Monocrystalline	245	7.23*	32
125	Lumos	LS270-72M-J	Monocrystalline	270	7.23*	32
126	Lumos	SST215-54M	Monocrystalline	215	7.22*	32
127	Lumos	LS230-60M-J	Monocrystalline	230	7.22*	32
128	Lumos	LS290-72M-B	Monocrystalline	290	7.22*	32
129	Lumos	LSX255-60M-B	Monocrystalline	255	7.21*	31
130	Lumos	LSX255-60M-C	Monocrystalline	255	7.21*	31
131	Lumos	LS280-72P	Polycrystalline	280	7.20*	30
132	Lumos	SST285-72M-BB	Monocrystalline	285	7.20*	30
133	Lumos	LS275-72P-J	Polycrystalline	275	7.19*	30
134	Lumos	LS270-72M	Monocrystalline	270	7.18*	29
135	Lumos	LS280-72P-B	Polycrystalline	280	7.17*	29
136	Lumos	LSX195-72M-W	Monocrystalline	195	7.16*	28
137	Lumos	LSX195-72M-C	Monocrystalline	195	7.15*	27
138	Lumos	SST230-60P	Polycrystalline	230	7.15*	28
139	Lumos	LS230-60P-J	Polycrystalline	230	7.15*	28
140	Lumos	LSX240-60M-C	Monocrystalline	240	7.12*	26
141	Lumos	SST235-60M-BB	Monocrystalline	235	7.11*	26
142	Lumos	LSX240-60M-B	Monocrystalline	240	7.10*	26
143	Lumos	LS180-72M-J	Monocrystalline	180	7.09*	25
144	Lumos	SST280-72M-BB	Monocrystalline	280	7.08*	24
145	Lumos	LSX240-60M-W	Monocrystalline	240	7.08*	25
146	Lumos	LS220-60M	Monocrystalline	220	7.08*	25
147	Lumos	LS275-72P	Polycrystalline	275	7.07*	24
148	Lumos	LS225-60M-J	Monocrystalline	225	7.06*	24
149	Lumos	LS265-72M	Monocrystalline	265	7.04*	23
150	Lumos	LS270-72P-J	Polycrystalline	270	7.02*	22
151	Lumos	LS225-60P-J	Polycrystalline	225	6.98*	21
152	Lumos	SST225-60P	Polycrystalline	225	6.98*	20
153	Lumos	LSX235-60M-B	Monocrystalline	235	6.96*	19
154	Lumos	LSX190-72M-W	Monocrystalline	190	6.96*	20
155	Lumos	LSX235-60M-C	Monocrystalline	235	6.95*	19
156	Lumos	LSX190-72M-C	Monocrystalline	190	6.95*	19
157	Lumos	LSX235-60M-W	Monocrystalline	235	6.94*	18
158	Lumos	LS175-72M-J	Monocrystalline	175	6.91*	18
159	Lumos	LS265-72P-J	Polycrystalline	265	6.90*	17
160	Lumos	SST220-60P	Polycrystalline	220	6.84*	16
161	Lumos	LSX230-60M-B	Monocrystalline	230	6.82*	15
162	Lumos	LSX230-60M-C	Monocrystalline	230	6.81*	14
163	Lumos	LSX230-60M-W	Monocrystalline	230	6.79*	14
164	Lumos	LSX185-72M-W	Monocrystalline	185	6.79*	14
165	Lumos	LSX185-72M-B	Monocrystalline	185	6.77*	13
166	Lumos	LS260-72P-J	Polycrystalline	260	6.77*	13
167	Lumos	LSX185-72M-C	Monocrystalline	185	6.77*	13
168	Lumos	LSX225-60M-W	Monocrystalline	225	6.67*	11
169	Lumos	LSX225-60M-C	Monocrystalline	225	6.66*	11
170	Lumos	LSX225-60M-B	Monocrystalline	225	6.66*	11
171	Lumos	LS255-72P-J	Polycrystalline	255	6.64*	10
172	Lumos	LSX180-72M-C	Monocrystalline	180	6.59*	9
173	Lumos	LSX180-72M-W	Monocrystalline	180	6.59*	9
174	Lumos	LSX180-72M-B	Monocrystalline	180	6.57*	9
175	Lumos	LS250-72P-J	Polycrystalline	250	6.50*	7
176	Lumos	LS220-60P-J	Polycrystalline	220	6.48*	7
177	Lumos	LS220-60M-J	Monocrystalline	220	6.42*	6
178	Lumos	LSX175-72M-W	Monocrystalline	175	6.41*	6
179	Lumos	LSX175-72M-B	Monocrystalline	175	6.39*	6
180	Lumos	LSX175-72M-C	Monocrystalline	175	6.39*	6

* 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.