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G2+ 425 vs G2.E1+/AC (Power class 425W) 14 of 19 identical Swap Change panels

Q-Cells Q.TRON BLK M-G2+ 425 vs Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W)

Q-Cells Q.TRON BLK M-G2+ 425
Q.TRON BLK M-G2+ 425
425 Wp 21.80 % N-type
Open panel page Datasheet PDF
VS
Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W)
Q.TRON BLK M-G2.E1+/AC (Power class 425W)
425 Wp 21.80 % N-type
Open panel page Datasheet PDF
The verdict

G2+ 425 leads on the differences that matter

The largest is weight per kwp: 4.1 kg/kWp lighter. 14 of 19 comparable parameters are identical.

See all 5 differences
How alike are they
14 of 19 comparable
parameters are identical
identical differs
01

What actually differs

5 of 19 parameters
Parameter G2+ 425 G2.E1+/AC (Power class 425W) Difference
Weight per kWp 49.9 kg/kWp 54.0 kg/kWp 4.1 kg/kWp lighter
Weight 21.2 kg 22.9 kg 1.8 kg lighter
Temperature coefficient -0.290 %/°C -0.300 %/°C 0.010 %/°C better in heat
Cell count 108 216 108 cells apart
Dimensions 1722x1134x30 mm 1722x1134x40 mm 1722x1134x30 mm vs 1722x1134x40 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
G2+ 425
14,338 kWh
G2.E1+/AC (Power class 425W)
14,338 kWh
Lifetime gap
No difference
Output when it is hot
Rated power carried across the range a module actually sees
Scenario G2+ 425 G2.E1+/AC (Power class 425W)
Standard test conditions 25 °C 100.0% of rated power 425 W 425 W
Cool, bright day 40 °C 95.5% of rated power 407 W 406 W
Typical summer roof 55 °C 91.0% of rated power 388 W 387 W
Hot roof 70 °C 86.5% of rated power 370 W 368 W
03

Full specification

Parameter G2+ 425 G2.E1+/AC (Power class 425W) Difference
Power and efficiency
Rated power 425 Wp 425 Wp Same
Module efficiency 21.80 % 21.80 % Same
Power density 217.6 Wp/m² 217.6 Wp/m² Same
Open-circuit voltage 39.03 V 39.03 V Same
Voltage at max power 32.74 V 32.74 V Same
Short-circuit current 13.66 A 13.66 A Same
Current at max power 12.98 A 12.98 A Same
Temperature
Temperature coefficient -0.290 %/°C -0.300 %/°C +0.010 %/°C for G2+ 425
Mechanical
Dimensions 1722x1134x30 mm 1722x1134x40 mm 1722x1134x30 mm vs 1722x1134x40 mm
Module area 1.953 m² 1.953 m² Same
Weight 21.2 kg 22.9 kg -1.8 kg for G2+ 425
Weight per kWp 49.9 kg/kWp 54.0 kg/kWp -4.1 kg/kWp for G2+ 425
Warranty and degradation
Product warranty 25 yrs 25 yrs Same
Performance warranty 25 yrs 25 yrs Same
Annual degradation 0.33 %/yr 0.33 %/yr Same
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 108 216 108 cells apart
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#7,022 vs #7,022
Tied - the same position in the database
Power density
#7,172 vs #7,172
Tied - the same position in the database
Heat behaviour
#2,165 vs #6,093
G2+ 425 leads by 3,928 places
Weight
#3,266 vs #8,183
G2+ 425 leads by 4,917 places
Warranty
#9,798 vs #9,798
Tied - the same position in the database
Overall
#9,034 vs #9,093
G2+ 425 leads by 59 places
05

More useful comparisons

Open the full database
Same series, other bin
Q-Cells Q.TRON BLK M-G2+ 425 vs Q-Cells Q.TRON BLK M-G2.H1+/AC (Power class 440W)
8 differences, the largest is module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2+ 425 vs Q-Cells Q.TRON BLK M-G2+ 440
3 differences, the largest is module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2+ 425 vs Q-Cells Q.TRON BLK M-G2.D1+/AC (Power class 435W)
8 differences, the largest is module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2+ 425 vs Q-Cells Q.TRON BLK M-G2+ 435
3 differences, the largest is module efficiency
Same series, other bin
Q-Cells Q.TRON BLK M-G2+ 425 vs Q-Cells Q.TRON BLK M-G2.C1+/AC (Power class 430W)
6 differences, the largest is weight
Same series, other bin
Q-Cells Q.TRON BLK M-G2+ 425 vs Q-Cells Q.TRON BLK M-G2+ 430
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Q-Cells Q.TRON BLK M-G2+ 425 or Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W)?
According to our database: Q-Cells Q.TRON BLK M-G2+ 425 tolerates heat better (temp coeff -0.290%/°C vs -0.300%/°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+ 425 and Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W)?
Q-Cells Q.TRON BLK M-G2+ 425 has a module efficiency of 21.80%, while Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425 W) is 21.80%. 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+ 425 use vs Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W)?
Q-Cells Q.TRON BLK M-G2+ 425 uses N-type cells; Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425 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.TRON BLK M-G2+ 425 and Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425W)?
Q-Cells Q.TRON BLK M-G2+ 425 has a 25 years power warranty; Q-Cells Q.TRON BLK M-G2.E1+/AC (Power class 425 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.

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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.