Tata Power Solar GSD7S72T-570WT vs Tata Power Solar TP642LG10B
VS
The verdict
13 differences, and they point both ways
The largest is module efficiency: 0.98 pp more efficient. 6 of 19 comparable parameters are identical.
See all 13 differencesHow alike are they
6
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
13 of 19 parameters
What actually differs
Parameter
GSD7S72T-570WT
TP642LG10B
Difference
Module efficiency
22.07 %
23.05 %
0.98 pp more efficient
Temperature coefficient
-0.300 %/°C
-0.370 %/°C
0.070 %/°C better in heat
Rated power
570 Wp
642 Wp
72 W more power
Annual degradation
0.40 %/yr
0.60 %/yr
0.20 %/yr slower
Power density
220.7 Wp/m²
230.5 Wp/m²
9.9 Wp/m² higher
Weight
32.0 kg
36.0 kg
4.0 kg lighter
Product warranty
25 yrs
12 yrs
13 yrs longer
Open-circuit voltage
50.74 V
55.00 V
4.26 V apart
Module area
2.583 m²
2.785 m²
0.202 m² apart
Cell technology
TOPCon
PERC
TOPCon vs PERC
Voltage at max power
42.07 V
47.28 V
5.21 V apart
Cell count
144
156
12 cells apart
Dimensions
2278x1134x30 mm
2456x1134x35 mm
2278x1134x30 mm vs 2456x1134x35 mm
02
What it means on a roof
Thirty years of production
Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, at 1,200 kWh/kWp a year
GSD7S72T-570WT
19,125 kWh
TP642LG10B
20,870 kWh
Lifetime gap
1,745 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
GSD7S72T-570WT
TP642LG10B
Standard test conditions
25 °C
100.0% of rated power
570 W
642 W
Cool, bright day
40 °C
94.5% of rated power
544 W
606 W
Typical summer roof
55 °C
88.9% of rated power
519 W
571 W
Hot roof
70 °C
83.3% of rated power
493 W
535 W
03
Full specification
Parameter
GSD7S72T-570WT
TP642LG10B
Difference
Power and efficiency
Rated power
570 Wp
642 Wp
+72 W for TP642LG10B
Module efficiency
22.07 %
23.05 %
+0.98 pp for TP642LG10B
Power density
220.7 Wp/m²
230.5 Wp/m²
+9.9 Wp/m² for TP642LG10B
Open-circuit voltage
50.74 V
55.00 V
4.26 V apart
Voltage at max power
42.07 V
47.28 V
5.21 V apart
Short-circuit current
14.31 A
14.01 A
Effectively the same
Current at max power
13.55 A
13.58 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.370 %/°C
+0.070 %/°C for GSD7S72T-570WT
Mechanical
Dimensions
2278x1134x30 mm
2456x1134x35 mm
2278x1134x30 mm vs 2456x1134x35 mm
Module area
2.583 m²
2.785 m²
0.202 m² apart
Weight
32.0 kg
36.0 kg
-4.0 kg for GSD7S72T-570WT
Weight per kWp
56.1 kg/kWp
56.1 kg/kWp
Same
Warranty and degradation
Product warranty
25 yrs
12 yrs
+13 yrs for GSD7S72T-570WT
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.60 %/yr
-0.20 %/yr for GSD7S72T-570WT
Technology
Cell technology
TOPCon
PERC
TOPCon vs PERC
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
144
156
12 cells apart
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#6,136
vs
#1,700
TP642LG10B leads by 4,436 places
Power density
#6,058
vs
#1,701
TP642LG10B leads by 4,357 places
Heat behaviour
#6,093
vs
#13,081
GSD7S72T-570WT leads by 6,988 places
Weight
#10,413
vs
#10,369
TP642LG10B leads by 44 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#2,649
vs
#1,920
TP642LG10B leads by 729 places
05
Open the full database
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06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Tata Power Solar GSD7S72T-570WT or Tata Power Solar TP642LG10B?
According to our database: Tata Power Solar TP642LG10B has higher module efficiency (23.05% vs 22.07%); Tata Power Solar GSD7S72T-570WT tolerates heat better (temp coeff -0.300%/°C vs -0.370%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Tata Power Solar GSD7S72T-570WT and Tata Power Solar TP642LG10B?
Tata Power Solar GSD7S72T-570WT has a module efficiency of 22.07%, while Tata Power Solar TP642LG10B is 23.05%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tata Power Solar GSD7S72T-570WT use vs Tata Power Solar TP642LG10B?
Tata Power Solar GSD7S72T-570WT uses TOPCon cells; Tata Power Solar TP642LG10B 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 GSD7S72T-570WT and Tata Power Solar TP642LG10B?
Tata Power Solar GSD7S72T-570WT has a 30 years power warranty; Tata Power Solar TP642LG10B 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 GSD7S72T-570WT and Tata Power Solar TP642LG10B bifacial panels?
Both Tata Power Solar GSD7S72T-570WT and Tata Power Solar TP642LG10B 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.