Tata Power Solar TP580LG10B vs Tata Power Solar TP540HG10B-545
VS
The verdict
8 differences, and they point both ways
The largest is rated power: 35 W more power. 11 of 19 comparable parameters are identical.
See all 8 differencesHow alike are they
11
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
8 of 19 parameters
What actually differs
Parameter
TP580LG10B
TP540HG10B-545
Difference
Rated power
580 Wp
545 Wp
35 W more power
Weight
36.0 kg
33.0 kg
3.0 kg lighter
Open-circuit voltage
53.63 V
49.60 V
4.03 V apart
Module area
2.785 m²
2.583 m²
0.202 m² apart
Module efficiency
20.83 %
21.10 %
0.27 pp more efficient
Cell count
156
144
12 cells apart
Voltage at max power
45.97 V
42.55 V
3.42 V apart
Dimensions
2456x1134x35 mm
2278x1134x35 mm
2456x1134x35 mm vs 2278x1134x35 mm
02
What it means on a roof
Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.370 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
TP580LG10B
18,541 kWh
TP540HG10B-545
17,423 kWh
Lifetime gap
1,118 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
TP580LG10B
TP540HG10B-545
Standard test conditions
25 °C
100.0% of rated power
580 W
545 W
Cool, bright day
40 °C
94.5% of rated power
548 W
515 W
Typical summer roof
55 °C
88.9% of rated power
516 W
485 W
Hot roof
70 °C
83.3% of rated power
483 W
454 W
03
Full specification
Parameter
TP580LG10B
TP540HG10B-545
Difference
Power and efficiency
Rated power
580 Wp
545 Wp
+35 W for TP580LG10B
Module efficiency
20.83 %
21.10 %
+0.27 pp for TP540HG10B-545
Power density
208.3 Wp/m²
211.0 Wp/m²
Effectively the same
Open-circuit voltage
53.63 V
49.60 V
4.03 V apart
Voltage at max power
45.97 V
42.55 V
3.42 V apart
Short-circuit current
13.12 A
13.32 A
Effectively the same
Current at max power
12.62 A
12.81 A
Effectively the same
Temperature
Temperature coefficient
-0.370 %/°C
-0.370 %/°C
Same
Mechanical
Dimensions
2456x1134x35 mm
2278x1134x35 mm
2456x1134x35 mm vs 2278x1134x35 mm
Module area
2.785 m²
2.583 m²
0.202 m² apart
Weight
36.0 kg
33.0 kg
-3.0 kg for TP540HG10B-545
Weight per kWp
62.1 kg/kWp
60.6 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
12 yrs
12 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.60 %/yr
0.60 %/yr
Same
Technology
Cell technology
PERC
PERC
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
156
144
12 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#10,433
vs
#9,297
TP540HG10B-545 leads by 1,136 places
Power density
#10,448
vs
#9,312
TP540HG10B-545 leads by 1,136 places
Heat behaviour
#13,081
vs
#13,081
Tied - the same position in the database
Weight
#12,738
vs
#12,489
TP540HG10B-545 leads by 249 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#6,484
vs
#7,457
TP580LG10B leads by 973 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Tata Power Solar TP580LG10B or Tata Power Solar TP540HG10B-545?
According to our database: Tata Power Solar TP540HG10B-545 has higher module efficiency (21.10% vs 20.83%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Tata Power Solar TP580LG10B and Tata Power Solar TP540HG10B-545?
Tata Power Solar TP580LG10B has a module efficiency of 20.83%, while Tata Power Solar TP540HG10B-545 is 21.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tata Power Solar TP580LG10B use vs Tata Power Solar TP540HG10B-545?
Tata Power Solar TP580LG10B uses PERC cells; Tata Power Solar TP540HG10B-545 uses PERC. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on Tata Power Solar TP580LG10B and Tata Power Solar TP540HG10B-545?
Tata Power Solar TP580LG10B has a 30 years power warranty; Tata Power Solar TP540HG10B-545 has a 30 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.
Are Tata Power Solar TP580LG10B and Tata Power Solar TP540HG10B-545 bifacial panels?
Both Tata Power Solar TP580LG10B and Tata Power Solar TP540HG10B-545 are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.
Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.