PEAK DUO ML-G12S.3 / BFG 670 vs TRON BLK M-G2.1+/AC (Power class 420W) 3 of 18 identical Swap Change panels

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 vs Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)

Q: Which panel is better: Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 or Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)?

According to our database: Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 has higher module efficiency (21.60% vs 21.50%); Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) 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.

Q: What is the efficiency of Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 and Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)?

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 has a module efficiency of 21.60%, while Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) is 21.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 use vs Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)?

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 uses Monocrystalline cells; Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) uses N-type. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 and Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)?

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 has a 30 years power warranty; Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) 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.

Q: Are Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 and Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) bifacial panels?

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 is bifacial (captures light from both faces); Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Q.PEAK DUO ML-G12S.3 / BFG 670

670 Wp 21.60 % Bifacial

Open panel page Datasheet PDF

Q.TRON BLK M-G2.1+/AC (Power class 420W)

420 Wp 21.50 % N-type

Open panel page Datasheet PDF

The verdict

TRON BLK M-G2.1+/AC (Power class 420W) leads on the differences that matter

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

What actually differs

15 of 18 parameters

Parameter PEAK DUO ML-G12S.3 / BFG 670 TRON BLK M-G2.1+/AC (Power class 420W) Difference

Temperature coefficient -0.340 %/°C -0.300 %/°C 0.040 %/°C better in heat

Rated power 670 Wp 420 Wp 250 W more power

Performance warranty 30 yrs 25 yrs 5 yrs longer

Weight 38.2 kg 22.9 kg 15.3 kg lighter

Product warranty 12 yrs 25 yrs 13 yrs longer

Annual degradation 0.45 %/yr 0.33 %/yr 0.12 %/yr slower

Open-circuit voltage 45.72 V 38.75 V 6.97 V apart

Short-circuit current 18.42 A 13.58 A 4.84 A apart

Module area 3.106 m² 1.953 m² 1.154 m² apart

Voltage at max power 38.27 V 32.54 V 5.73 V apart

Current at max power 17.51 A 12.91 A 4.60 A apart

Cell count 132 216 84 cells apart

Weight per kWp 57.0 kg/kWp 54.6 kg/kWp 2.4 kg/kWp lighter

Bifacial Yes No Yes vs No

Dimensions 2384x1303x35 mm 1722x1134x40 mm 2384x1303x35 mm vs 1722x1134x40 mm

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

PEAK DUO ML-G12S.3 / BFG 670

22,064 kWh

TRON BLK M-G2.1+/AC (Power class 420W)

14,170 kWh

Lifetime gap

7,894 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario PEAK DUO ML-G12S.3 / BFG 670 TRON BLK M-G2.1+/AC (Power class 420W)

Standard test conditions 25 °C 100.0% of rated power 670 W 420 W

Cool, bright day 40 °C 94.9% of rated power 636 W 401 W

Typical summer roof 55 °C 89.8% of rated power 602 W 382 W

Hot roof 70 °C 84.7% of rated power 567 W 363 W

Full specification

Parameter PEAK DUO ML-G12S.3 / BFG 670 TRON BLK M-G2.1+/AC (Power class 420W) Difference

Power and efficiency

Rated power 670 Wp 420 Wp +250 W for PEAK DUO ML-G12S.3 / BFG 670

Module efficiency 21.60 % 21.50 % Effectively the same

Power density 215.7 Wp/m² 215.1 Wp/m² Effectively the same

Open-circuit voltage 45.72 V 38.75 V 6.97 V apart

Voltage at max power 38.27 V 32.54 V 5.73 V apart

Short-circuit current 18.42 A 13.58 A 4.84 A apart

Current at max power 17.51 A 12.91 A 4.60 A apart

Temperature

Temperature coefficient -0.340 %/°C -0.300 %/°C +0.040 %/°C for TRON BLK M-G2.1+/AC (Power class 420W)

Mechanical

Dimensions 2384x1303x35 mm 1722x1134x40 mm 2384x1303x35 mm vs 1722x1134x40 mm

Module area 3.106 m² 1.953 m² 1.154 m² apart

Weight 38.2 kg 22.9 kg -15.3 kg for TRON BLK M-G2.1+/AC (Power class 420W)

Weight per kWp 57.0 kg/kWp 54.6 kg/kWp -2.4 kg/kWp for TRON BLK M-G2.1+/AC (Power class 420W)

Warranty and degradation

Product warranty 12 yrs 25 yrs +13 yrs for TRON BLK M-G2.1+/AC (Power class 420W)

Performance warranty 30 yrs 25 yrs +5 yrs for PEAK DUO ML-G12S.3 / BFG 670

Annual degradation 0.45 %/yr 0.33 %/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 132 216 84 cells apart

Bifacial Yes No Yes vs No

Against the whole database

14,005 panels

Efficiency

#7,652 vs #7,958

PEAK DUO ML-G12S.3 / BFG 670 leads by 306 places

Power density

#7,644 vs #7,882

PEAK DUO ML-G12S.3 / BFG 670 leads by 238 places

Heat behaviour

#8,778 vs #6,093

TRON BLK M-G2.1+/AC (Power class 420W) leads by 2,685 places

Weight

#11,008 vs #9,019

TRON BLK M-G2.1+/AC (Power class 420W) leads by 1,989 places

Warranty

#21 vs #9,798

PEAK DUO ML-G12S.3 / BFG 670 leads by 9,777 places

Overall

#2,462 vs #9,518

PEAK DUO ML-G12S.3 / BFG 670 leads by 7,056 places

More useful comparisons

Open the full database

Same series, other bin

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 675

The same specification on paper

Same series, other bin

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 665

One difference: module efficiency

Same series, other bin

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 660

3 differences, the largest is module efficiency

Same series, other bin

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 655

3 differences, the largest is module efficiency

Same series, other bin

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 vs Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 650

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.H1+/AC (Power class 440W)

5 differences, the largest is module efficiency

Written summary

Checking cache...

Questions about this pairing

Which panel is better: Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 or Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)?

According to our database: Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 has higher module efficiency (21.60% 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.PEAK DUO ML-G12S.3 / BFG 670 and Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)?

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 has a module efficiency of 21.60%, while Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420 W) is 21.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 use vs Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)?

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 uses Monocrystalline cells; Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420 W) uses N-type. 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.PEAK DUO ML-G12S.3 / BFG 670 and Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W)?

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 has a 30 years power warranty; Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420 W) 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 Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 and Q-Cells Q.TRON BLK M-G2.1+/AC (Power class 420W) bifacial panels?

Q-Cells Q.PEAK DUO ML-G12S.3 / BFG 670 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.

Shop prices: See 25 Q-Cells 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.