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TP631LG10B vs TP550HG10TB 3 of 19 identical Swap Change panels

Tata Power Solar TP631LG10B vs Tata Power Solar TP550HG10TB

Tata Power Solar TP631LG10B
Tata Power Solar
TP631LG10B
631 Wp 22.66 % PERC Bifacial
Open panel page Datasheet PDF
VS
Tata Power Solar
TP550HG10TB
550 Wp 21.29 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

TP631LG10B leads on the differences that matter

The largest is module efficiency: 1.37 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 TP631LG10B TP550HG10TB Difference
Module efficiency 22.66 % 21.29 % 1.37 pp more efficient
Rated power 631 Wp 550 Wp 81 W more power
Power density 226.6 Wp/m² 212.9 Wp/m² 13.7 Wp/m² higher
Performance warranty 30 yrs 25 yrs 5 yrs longer
Weight 36.0 kg 29.0 kg 7.0 kg lighter
Annual degradation 0.60 %/yr 0.72 %/yr 0.12 %/yr slower
Open-circuit voltage 54.76 V 49.75 V 5.01 V apart
Module area 2.785 m² 2.583 m² 0.202 m² apart
Weight per kWp 57.1 kg/kWp 52.7 kg/kWp 4.3 kg/kWp lighter
Product warranty 12 yrs 10 yrs 2 yrs longer
Temperature coefficient -0.370 %/°C -0.360 %/°C 0.010 %/°C better in heat
Voltage at max power 47.04 V 42.62 V 4.42 V apart
Cell count 156 144 12 cells apart
Short-circuit current 13.93 A 13.42 A 0.51 A apart
Dimensions 2456x1134x35 mm 2278x1134x35 mm 2456x1134x35 mm vs 2278x1134x35 mm
Current at max power 13.42 A 12.90 A 0.52 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
TP631LG10B
20,172 kWh
TP550HG10TB
17,238 kWh
Lifetime gap
2,934 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario TP631LG10B TP550HG10TB
Standard test conditions 25 °C 100.0% of rated power 631 W 550 W
Cool, bright day 40 °C 94.5% of rated power 596 W 520 W
Typical summer roof 55 °C 88.9% of rated power 561 W 491 W
Hot roof 70 °C 83.3% of rated power 526 W 461 W
03

Full specification

Parameter TP631LG10B TP550HG10TB Difference
Power and efficiency
Rated power 631 Wp 550 Wp +81 W for TP631LG10B
Module efficiency 22.66 % 21.29 % +1.37 pp for TP631LG10B
Power density 226.6 Wp/m² 212.9 Wp/m² +13.7 Wp/m² for TP631LG10B
Open-circuit voltage 54.76 V 49.75 V 5.01 V apart
Voltage at max power 47.04 V 42.62 V 4.42 V apart
Short-circuit current 13.93 A 13.42 A 0.51 A apart
Current at max power 13.42 A 12.90 A 0.52 A apart
Temperature
Temperature coefficient -0.370 %/°C -0.360 %/°C +0.010 %/°C for TP550HG10TB
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 29.0 kg -7.0 kg for TP550HG10TB
Weight per kWp 57.1 kg/kWp 52.7 kg/kWp -4.3 kg/kWp for TP550HG10TB
Warranty and degradation
Product warranty 12 yrs 10 yrs +2 yrs for TP631LG10B
Performance warranty 30 yrs 25 yrs +5 yrs for TP631LG10B
Annual degradation 0.60 %/yr 0.72 %/yr -0.12 %/yr for TP631LG10B
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 156 144 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#3,520 vs #8,708
TP631LG10B leads by 5,188 places
Power density
#3,492 vs #8,497
TP631LG10B leads by 5,005 places
Heat behaviour
#13,081 vs #12,345
TP550HG10TB leads by 736 places
Weight
#11,038 vs #6,373
TP550HG10TB leads by 4,665 places
Warranty
#21 vs #9,798
TP631LG10B leads by 9,777 places
Overall
#2,582 vs #8,571
TP631LG10B leads by 5,989 places
05

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06

Written summary

07

Questions about this pairing

Which panel is better: Tata Power Solar TP631LG10B or Tata Power Solar TP550HG10TB?
According to our database: Tata Power Solar TP631LG10B has higher module efficiency (22.66% vs 21.29%); Tata Power Solar TP550HG10TB 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 TP631LG10B and Tata Power Solar TP550HG10TB?
Tata Power Solar TP631LG10B has a module efficiency of 22.66%, while Tata Power Solar TP550HG10TB is 21.29%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Tata Power Solar TP631LG10B use vs Tata Power Solar TP550HG10TB?
Tata Power Solar TP631LG10B uses PERC cells; Tata Power Solar TP550HG10TB 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 TP631LG10B and Tata Power Solar TP550HG10TB?
Tata Power Solar TP631LG10B has a 30 years power warranty; Tata Power Solar TP550HG10TB has a 25 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 TP631LG10B and Tata Power Solar TP550HG10TB bifacial panels?
Both Tata Power Solar TP631LG10B and Tata Power Solar TP550HG10TB 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.