Skip to main content
TP637LG10B vs TP570LG10B 11 of 19 identical Swap Change panels

Tata Power Solar TP637LG10B vs Tata Power Solar TP570LG10B

Tata Power Solar TP637LG10B
Tata Power Solar
TP637LG10B
637 Wp 22.87 % PERC Bifacial
Open panel page Datasheet PDF
VS
Tata Power Solar TP570LG10B
Tata Power Solar
TP570LG10B
570 Wp 20.47 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

TP637LG10B leads on the differences that matter

The largest is module efficiency: 2.40 pp more efficient. 11 of 19 comparable parameters are identical.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs
01

What actually differs

8 of 19 parameters
Parameter TP637LG10B TP570LG10B Difference
Module efficiency 22.87 % 20.47 % 2.40 pp more efficient
Rated power 637 Wp 570 Wp 67 W more power
Power density 228.7 Wp/m² 204.7 Wp/m² 24.1 Wp/m² higher
Weight per kWp 56.5 kg/kWp 63.2 kg/kWp 6.6 kg/kWp lighter
Short-circuit current 13.97 A 13.04 A 0.93 A apart
Open-circuit voltage 54.88 V 53.41 V 1.47 V apart
Current at max power 13.50 A 12.47 A 1.03 A apart
Voltage at max power 47.16 V 45.71 V 1.45 V apart
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.
TP637LG10B
20,364 kWh
TP570LG10B
18,222 kWh
Lifetime gap
2,142 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario TP637LG10B TP570LG10B
Standard test conditions 25 °C 100.0% of rated power 637 W 570 W
Cool, bright day 40 °C 94.5% of rated power 602 W 538 W
Typical summer roof 55 °C 88.9% of rated power 566 W 507 W
Hot roof 70 °C 83.3% of rated power 531 W 475 W
03

Full specification

Parameter TP637LG10B TP570LG10B Difference
Power and efficiency
Rated power 637 Wp 570 Wp +67 W for TP637LG10B
Module efficiency 22.87 % 20.47 % +2.40 pp for TP637LG10B
Power density 228.7 Wp/m² 204.7 Wp/m² +24.1 Wp/m² for TP637LG10B
Open-circuit voltage 54.88 V 53.41 V 1.47 V apart
Voltage at max power 47.16 V 45.71 V 1.45 V apart
Short-circuit current 13.97 A 13.04 A 0.93 A apart
Current at max power 13.50 A 12.47 A 1.03 A apart
Temperature
Temperature coefficient -0.370 %/°C -0.370 %/°C Same
Mechanical
Dimensions 2456x1134x35 mm 2456x1134x35 mm Same
Module area 2.785 m² 2.785 m² Same
Weight 36.0 kg 36.0 kg Same
Weight per kWp 56.5 kg/kWp 63.2 kg/kWp -6.6 kg/kWp for TP637LG10B
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 156 156 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,531 vs #11,523
TP637LG10B leads by 8,992 places
Power density
#2,447 vs #11,502
TP637LG10B leads by 9,055 places
Heat behaviour
#13,081 vs #13,081
Tied - the same position in the database
Weight
#10,693 vs #12,860
TP637LG10B leads by 2,167 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,188 vs #7,324
TP637LG10B leads by 5,136 places
05

More useful comparisons

Open the full database
Same series, other bin
Tata Power Solar
Tata Power Solar TP637LG10B vs Tata Power Solar TP642LG10B
The same specification on paper
Same series, other bin
Tata Power Solar
Tata Power Solar TP637LG10B vs Tata Power Solar TP631LG10B
One difference: module efficiency
Same series, other bin
Tata Power Solar
Tata Power Solar TP637LG10B vs Tata Power Solar TP626LG10B
3 differences, the largest is module efficiency
Same series, other bin
Tata Power Solar
Tata Power Solar TP637LG10B vs Tata Power Solar TP621LG10B
3 differences, the largest is module efficiency
Same series, other bin
Tata Power Solar
Tata Power Solar TP637LG10B vs Tata Power Solar TP615LG10B
4 differences, the largest is module efficiency
Same series, other bin
Tata Power Solar
Tata Power Solar TP637LG10B vs Tata Power Solar TP610LG10B
4 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Tata Power Solar TP637LG10B or Tata Power Solar TP570LG10B?
According to our database: Tata Power Solar TP637LG10B has higher module efficiency (22.87% vs 20.47%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Tata Power Solar TP637LG10B and Tata Power Solar TP570LG10B?
Tata Power Solar TP637LG10B has a module efficiency of 22.87%, while Tata Power Solar TP570LG10B is 20.47%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tata Power Solar TP637LG10B use vs Tata Power Solar TP570LG10B?
Tata Power Solar TP637LG10B uses PERC cells; Tata Power Solar TP570LG10B 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 TP637LG10B and Tata Power Solar TP570LG10B?
Tata Power Solar TP637LG10B has a 30 years power warranty; Tata Power Solar TP570LG10B 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 TP637LG10B and Tata Power Solar TP570LG10B bifacial panels?
Both Tata Power Solar TP637LG10B and Tata Power Solar TP570LG10B 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.