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TRON BLK M-G2.1+/AC (Power class 420W) vs PEAK DUO ML-G12S.3 / BFG 675 3 of 18 identical Swap Change panels

Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675

Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)
Q.TRON BLK M-G2.1+/AC (Power class 420W)
420 Wp 21.50 % N-type
Open panel page Datasheet PDF
VS
Q.PEAK DUO ML-G12S.3 / BFG 675
675 Wp 21.70 % Bifacial
Open panel page Datasheet PDF
The verdict

15 differences, and they point both ways

The largest is temperature coefficient: 0.040 %/°C better in heat. 3 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 15 differences
How alike are they
3 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

15 of 18 parameters
Parameter TRON BLK M-G2.1+/AC (Power class 420W) PEAK DUO ML-G12S.3 / BFG 675 Difference
Temperature coefficient -0.300 %/°C -0.340 %/°C 0.040 %/°C better in heat
Rated power 420 Wp 675 Wp 255 W more power
Performance warranty 25 yrs 30 yrs 5 yrs longer
Weight 22.9 kg 38.2 kg 15.3 kg lighter
Product warranty 25 yrs 12 yrs 13 yrs longer
Annual degradation 0.33 %/yr 0.45 %/yr 0.12 %/yr slower
Open-circuit voltage 38.75 V 45.74 V 6.99 V apart
Short-circuit current 13.58 A 18.45 A 4.87 A apart
Module area 1.953 m² 3.106 m² 1.154 m² apart
Module efficiency 21.50 % 21.70 % 0.20 pp more efficient
Voltage at max power 32.54 V 38.43 V 5.89 V apart
Current at max power 12.91 A 17.56 A 4.65 A apart
Cell count 216 132 84 cells apart
Bifacial No Yes No vs Yes
Dimensions 1722x1134x40 mm 2384x1303x35 mm 1722x1134x40 mm vs 2384x1303x35 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
TRON BLK M-G2.1+/AC (Power class 420W)
14,170 kWh
PEAK DUO ML-G12S.3 / BFG 675
22,228 kWh
Lifetime gap
8,058 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario TRON BLK M-G2.1+/AC (Power class 420W) PEAK DUO ML-G12S.3 / BFG 675
Standard test conditions 25 °C 100.0% of rated power 420 W 675 W
Cool, bright day 40 °C 94.9% of rated power 401 W 641 W
Typical summer roof 55 °C 89.8% of rated power 382 W 606 W
Hot roof 70 °C 84.7% of rated power 363 W 572 W
03

Full specification

Parameter TRON BLK M-G2.1+/AC (Power class 420W) PEAK DUO ML-G12S.3 / BFG 675 Difference
Power and efficiency
Rated power 420 Wp 675 Wp +255 W for PEAK DUO ML-G12S.3 / BFG 675
Module efficiency 21.50 % 21.70 % +0.20 pp for PEAK DUO ML-G12S.3 / BFG 675
Power density 215.1 Wp/m² 217.3 Wp/m² Effectively the same
Open-circuit voltage 38.75 V 45.74 V 6.99 V apart
Voltage at max power 32.54 V 38.43 V 5.89 V apart
Short-circuit current 13.58 A 18.45 A 4.87 A apart
Current at max power 12.91 A 17.56 A 4.65 A apart
Temperature
Temperature coefficient -0.300 %/°C -0.340 %/°C +0.040 %/°C for TRON BLK M-G2.1+/AC (Power class 420W)
Mechanical
Dimensions 1722x1134x40 mm 2384x1303x35 mm 1722x1134x40 mm vs 2384x1303x35 mm
Module area 1.953 m² 3.106 m² 1.154 m² apart
Weight 22.9 kg 38.2 kg -15.3 kg for TRON BLK M-G2.1+/AC (Power class 420W)
Weight per kWp 54.6 kg/kWp 56.6 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 12 yrs +13 yrs for TRON BLK M-G2.1+/AC (Power class 420W)
Performance warranty 25 yrs 30 yrs +5 yrs for PEAK DUO ML-G12S.3 / BFG 675
Annual degradation 0.33 %/yr 0.45 %/yr -0.12 %/yr for TRON BLK M-G2.1+/AC (Power class 420W)
Technology
Cell technology N-type - Not published by Q-Cells
Cell type Monocrystalline Monocrystalline Same
Cell count 216 132 84 cells apart
Bifacial No Yes No vs Yes
04

Against the whole database

14,005 panels
Efficiency
#7,958 vs #7,421
PEAK DUO ML-G12S.3 / BFG 675 leads by 537 places
Power density
#7,882 vs #7,349
PEAK DUO ML-G12S.3 / BFG 675 leads by 533 places
Heat behaviour
#6,093 vs #8,778
TRON BLK M-G2.1+/AC (Power class 420W) leads by 2,685 places
Weight
#9,019 vs #10,738
TRON BLK M-G2.1+/AC (Power class 420W) leads by 1,719 places
Warranty
#9,798 vs #21
PEAK DUO ML-G12S.3 / BFG 675 leads by 9,777 places
Overall
#9,518 vs #2,198
PEAK DUO ML-G12S.3 / BFG 675 leads by 7,320 places
05

More useful comparisons

Open the full database
Same series, other bin
Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) vs Q-Cells Q.TRON BLK M-G2.H1+/AC (Power class 440W)
5 differences, the largest is module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) vs Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435W)
3 differences, the largest is module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) vs Q-Cells Q.TRON BLK M-G2.C1+/AC (Power class 430W)
3 differences, the largest is module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) vs Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W)
One difference: module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) vs Q-Cells Q.TRON BLK M-G2+/AC (Power class 415W)
One difference: module efficiency
Same series, other bin
Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675 vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670
The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) or Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675?
According to our database: Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675 has higher module efficiency (21.70% vs 21.50%); Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420 W) tolerates heat better (temp coeff -0.300%/°C vs -0.340%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) and Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675?
Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420 W) has a module efficiency of 21.50%, while Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675 is 21.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) use vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675?
Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420 W) uses N-type cells; Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675 uses Monocrystalline. 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 Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) and Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675?
Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420 W) has a 25 years power warranty; Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675 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 Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) and Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675 bifacial panels?
Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675 is bifacial (captures light from both faces); Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420 W) is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

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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.