Skip to main content
TP545HG10TB vs TP637LG10B 3 of 19 identical Swap Change panels

Tata Power Solar TP545HG10TB vs Tata Power Solar TP637LG10B

Tata Power Solar
TP545HG10TB
545 Wp 21.10 % PERC Bifacial
Open panel page Datasheet PDF
VS
Tata Power Solar TP637LG10B
Tata Power Solar
TP637LG10B
637 Wp 22.87 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

TP637LG10B leads on the differences that matter

The largest is module efficiency: 1.77 pp more efficient. 3 of 19 comparable parameters are identical.

See all 16 differences
How alike are they
3 of 19 comparable
parameters are identical
identical differs
01

What actually differs

16 of 19 parameters
Parameter TP545HG10TB TP637LG10B Difference
Module efficiency 21.10 % 22.87 % 1.77 pp more efficient
Rated power 545 Wp 637 Wp 92 W more power
Power density 211.0 Wp/m² 228.7 Wp/m² 17.7 Wp/m² higher
Performance warranty 25 yrs 30 yrs 5 yrs longer
Weight 29.0 kg 36.0 kg 7.0 kg lighter
Annual degradation 0.72 %/yr 0.60 %/yr 0.12 %/yr slower
Open-circuit voltage 49.60 V 54.88 V 5.28 V apart
Module area 2.583 m² 2.785 m² 0.202 m² apart
Product warranty 10 yrs 12 yrs 2 yrs longer
Temperature coefficient -0.360 %/°C -0.370 %/°C 0.010 %/°C better in heat
Weight per kWp 53.2 kg/kWp 56.5 kg/kWp 3.3 kg/kWp lighter
Voltage at max power 42.55 V 47.16 V 4.61 V apart
Cell count 144 156 12 cells apart
Short-circuit current 13.32 A 13.97 A 0.65 A apart
Dimensions 2278x1134x35 mm 2456x1134x35 mm 2278x1134x35 mm vs 2456x1134x35 mm
Current at max power 12.81 A 13.50 A 0.69 A 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
TP545HG10TB
17,081 kWh
TP637LG10B
20,364 kWh
Lifetime gap
3,283 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario TP545HG10TB TP637LG10B
Standard test conditions 25 °C 100.0% of rated power 545 W 637 W
Cool, bright day 40 °C 94.5% of rated power 516 W 602 W
Typical summer roof 55 °C 88.9% of rated power 486 W 566 W
Hot roof 70 °C 83.3% of rated power 457 W 531 W
03

Full specification

Parameter TP545HG10TB TP637LG10B Difference
Power and efficiency
Rated power 545 Wp 637 Wp +92 W for TP637LG10B
Module efficiency 21.10 % 22.87 % +1.77 pp for TP637LG10B
Power density 211.0 Wp/m² 228.7 Wp/m² +17.7 Wp/m² for TP637LG10B
Open-circuit voltage 49.60 V 54.88 V 5.28 V apart
Voltage at max power 42.55 V 47.16 V 4.61 V apart
Short-circuit current 13.32 A 13.97 A 0.65 A apart
Current at max power 12.81 A 13.50 A 0.69 A apart
Temperature
Temperature coefficient -0.360 %/°C -0.370 %/°C +0.010 %/°C for TP545HG10TB
Mechanical
Dimensions 2278x1134x35 mm 2456x1134x35 mm 2278x1134x35 mm vs 2456x1134x35 mm
Module area 2.583 m² 2.785 m² 0.202 m² apart
Weight 29.0 kg 36.0 kg -7.0 kg for TP545HG10TB
Weight per kWp 53.2 kg/kWp 56.5 kg/kWp -3.3 kg/kWp for TP545HG10TB
Warranty and degradation
Product warranty 10 yrs 12 yrs +2 yrs for TP637LG10B
Performance warranty 25 yrs 30 yrs +5 yrs for TP637LG10B
Annual degradation 0.72 %/yr 0.60 %/yr -0.12 %/yr for TP637LG10B
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 156 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#9,297 vs #2,531
TP637LG10B leads by 6,766 places
Power density
#9,312 vs #2,447
TP637LG10B leads by 6,865 places
Heat behaviour
#12,345 vs #13,081
TP545HG10TB leads by 736 places
Weight
#7,047 vs #10,693
TP545HG10TB leads by 3,646 places
Warranty
#9,798 vs #21
TP637LG10B leads by 9,777 places
Overall
#8,965 vs #2,188
TP637LG10B leads by 6,777 places
05

More useful comparisons

Open the full database
Same series, other bin
Tata Power Solar
Tata Power Solar TP545HG10TB vs Tata Power Solar TP550HG10TB
The same specification on paper
Same series, other bin
Tata Power Solar
Tata Power Solar TP545HG10TB vs Tata Power Solar TP540HG10TB
One difference: module efficiency
Same series, other bin
Tata Power Solar
Tata Power Solar TP545HG10TB vs Tata Power Solar TP535HG10TB
3 differences, the largest is module efficiency
Same series, other bin
Tata Power Solar
Tata Power Solar TP545HG10TB vs Tata Power Solar TP530HG10TB
3 differences, the largest is module efficiency
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
06

Written summary

07

Questions about this pairing

Which panel is better: Tata Power Solar TP545HG10TB or Tata Power Solar TP637LG10B?
According to our database: Tata Power Solar TP637LG10B has higher module efficiency (22.87% vs 21.10%); Tata Power Solar TP545HG10TB tolerates heat better (temp coeff -0.360%/°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 TP545HG10TB and Tata Power Solar TP637LG10B?
Tata Power Solar TP545HG10TB has a module efficiency of 21.10%, while Tata Power Solar TP637LG10B is 22.87%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tata Power Solar TP545HG10TB use vs Tata Power Solar TP637LG10B?
Tata Power Solar TP545HG10TB uses PERC cells; Tata Power Solar TP637LG10B 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 TP545HG10TB and Tata Power Solar TP637LG10B?
Tata Power Solar TP545HG10TB has a 25 years power warranty; Tata Power Solar TP637LG10B 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 TP545HG10TB and Tata Power Solar TP637LG10B bifacial panels?
Both Tata Power Solar TP545HG10TB and Tata Power Solar TP637LG10B 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.