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68-650 vs 55-540 9 of 19 identical Swap Change panels

Waaree Bi-68-650 vs Waaree Bi-55-540

Waaree Bi-68-650
Bi-68-650
650 Wp 20.82 % PERC Bifacial
Open panel page Datasheet PDF
VS
Waaree Bi-55-540
Bi-55-540
540 Wp 20.98 % PERC Bifacial
Open panel page Datasheet PDF
The verdict

68-650 leads on the differences that matter

The largest is rated power: 110 W more power. 9 of 19 comparable parameters are identical.

See all 10 differences
How alike are they
9 of 19 comparable
parameters are identical
identical differs
01

What actually differs

10 of 19 parameters
Parameter 68-650 55-540 Difference
Rated power 650 Wp 540 Wp 110 W more power
Weight 39.0 kg 32.5 kg 6.5 kg lighter
Short-circuit current 17.84 A 13.83 A 4.01 A apart
Module area 3.125 m² 2.574 m² 0.551 m² apart
Open-circuit voltage 46.09 V 49.61 V 3.52 V apart
Temperature coefficient -0.340 %/°C -0.350 %/°C 0.010 %/°C better in heat
Current at max power 17.16 A 12.95 A 4.21 A apart
Cell count 132 144 12 cells apart
Voltage at max power 37.91 V 41.75 V 3.84 V apart
Dimensions 2400x1302x35 mm 2272x1133x35 mm 2400x1302x35 mm vs 2272x1133x35 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
68-650
21,066 kWh
55-540
17,501 kWh
Lifetime gap
3,565 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 68-650 55-540
Standard test conditions 25 °C 100.0% of rated power 650 W 540 W
Cool, bright day 40 °C 94.8% of rated power 617 W 512 W
Typical summer roof 55 °C 89.5% of rated power 584 W 483 W
Hot roof 70 °C 84.2% of rated power 551 W 455 W
03

Full specification

Parameter 68-650 55-540 Difference
Power and efficiency
Rated power 650 Wp 540 Wp +110 W for 68-650
Module efficiency 20.82 % 20.98 % Effectively the same
Power density 208.0 Wp/m² 209.8 Wp/m² Effectively the same
Open-circuit voltage 46.09 V 49.61 V 3.52 V apart
Voltage at max power 37.91 V 41.75 V 3.84 V apart
Short-circuit current 17.84 A 13.83 A 4.01 A apart
Current at max power 17.16 A 12.95 A 4.21 A apart
Temperature
Temperature coefficient -0.340 %/°C -0.350 %/°C +0.010 %/°C for 68-650
Mechanical
Dimensions 2400x1302x35 mm 2272x1133x35 mm 2400x1302x35 mm vs 2272x1133x35 mm
Module area 3.125 m² 2.574 m² 0.551 m² apart
Weight 39.0 kg 32.5 kg -6.5 kg for 55-540
Weight per kWp 60.0 kg/kWp 60.2 kg/kWp Effectively the same
Warranty and degradation
Product warranty 12 yrs 12 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.55 %/yr 0.55 %/yr Same
Technology
Cell technology PERC PERC Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 144 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#10,443 vs #9,963
55-540 leads by 480 places
Power density
#10,477 vs #9,905
55-540 leads by 572 places
Heat behaviour
#8,778 vs #10,419
68-650 leads by 1,641 places
Weight
#12,326 vs #12,384
68-650 leads by 58 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#4,037 vs #7,782
68-650 leads by 3,745 places
05

More useful comparisons

Open the full database
Same series, other bin
Waaree Bi-68-650 vs Waaree Bi-68-665
3 differences, the largest is module efficiency
Same series, other bin
Waaree Bi-68-650 vs Waaree Bi-68-660
3 differences, the largest is module efficiency
Same series, other bin
Waaree Bi-68-650 vs Waaree Bi-68-655
The same specification on paper
Same series, other bin
Waaree Bi-68-650 vs Waaree Bi-68-645
The same specification on paper
Same series, other bin
Waaree Bi-68-650 vs Waaree Bi-66-600
8 differences, the largest is rated power
Same series, other bin
Waaree Bi-68-650 vs Waaree Bi-66-595
7 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Waaree Bi-68-650 or Waaree Bi-55-540?
According to our database: Waaree Bi-55-540 has higher module efficiency (20.98% vs 20.82%); Waaree Bi-68-650 tolerates heat better (temp coeff -0.340%/°C vs -0.350%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Waaree Bi-68-650 and Waaree Bi-55-540?
Waaree Bi-68-650 has a module efficiency of 20.82%, while Waaree Bi-55-540 is 20.98%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Waaree Bi-68-650 use vs Waaree Bi-55-540?
Waaree Bi-68-650 uses PERC cells; Waaree Bi-55-540 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 Waaree Bi-68-650 and Waaree Bi-55-540?
Waaree Bi-68-650 has a 30 years power warranty; Waaree Bi-55-540 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 Waaree Bi-68-650 and Waaree Bi-55-540 bifacial panels?
Both Waaree Bi-68-650 and Waaree Bi-55-540 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.

Shop prices: See 26 Waaree offers

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.