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1.2 FullBlack 270W vs 2.2 710 5 of 19 identical Swap Change panels

Heckert Solar ZEUS 1.2 FullBlack 270W vs Heckert Solar ZEUS 2.2 710

Heckert Solar
ZEUS 1.2 FullBlack 270W
270 Wp 22.47 % Back Contact Bifacial
Open panel page Datasheet PDF
VS
Heckert Solar ZEUS 2.2 710
Heckert Solar
ZEUS 2.2 710
710 Wp 22.90 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

14 differences, and they point both ways

The largest is rated power: 440 W more power. 5 of 19 comparable parameters are identical.

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

What actually differs

14 of 19 parameters
Parameter 1.2 FullBlack 270W 2.2 710 Difference
Rated power 270 Wp 710 Wp 440 W more power
Weight 14.3 kg 37.9 kg 23.6 kg lighter
Product warranty 30 yrs 12 yrs 18 yrs longer
Module efficiency 22.47 % 22.90 % 0.43 pp more efficient
Temperature coefficient -0.260 %/°C -0.280 %/°C 0.020 %/°C better in heat
Open-circuit voltage 23.67 V 48.94 V 25.27 V apart
Short-circuit current 14.58 A 18.45 A 3.87 A apart
Module area 1.201 m² 3.106 m² 1.905 m² apart
Power density 224.8 Wp/m² 228.6 Wp/m² 3.8 Wp/m² higher
Cell technology Back Contact TOPCon Back Contact vs TOPCon
Voltage at max power 20.23 V 40.69 V 20.46 V apart
Current at max power 13.35 A 17.45 A 4.10 A apart
Cell count 64 132 68 cells apart
Dimensions 1560x770x35 mm 2384x1303x33 mm 1560x770x35 mm vs 2384x1303x33 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
1.2 FullBlack 270W
8,891 kWh
2.2 710
23,381 kWh
Lifetime gap
14,490 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 1.2 FullBlack 270W 2.2 710
Standard test conditions 25 °C 100.0% of rated power 270 W 710 W
Cool, bright day 40 °C 95.8% of rated power 259 W 680 W
Typical summer roof 55 °C 91.6% of rated power 249 W 650 W
Hot roof 70 °C 87.4% of rated power 238 W 621 W
03

Full specification

Parameter 1.2 FullBlack 270W 2.2 710 Difference
Power and efficiency
Rated power 270 Wp 710 Wp +440 W for 2.2 710
Module efficiency 22.47 % 22.90 % +0.43 pp for 2.2 710
Power density 224.8 Wp/m² 228.6 Wp/m² +3.8 Wp/m² for 2.2 710
Open-circuit voltage 23.67 V 48.94 V 25.27 V apart
Voltage at max power 20.23 V 40.69 V 20.46 V apart
Short-circuit current 14.58 A 18.45 A 3.87 A apart
Current at max power 13.35 A 17.45 A 4.10 A apart
Temperature
Temperature coefficient -0.260 %/°C -0.280 %/°C +0.020 %/°C for 1.2 FullBlack 270W
Mechanical
Dimensions 1560x770x35 mm 2384x1303x33 mm 1560x770x35 mm vs 2384x1303x33 mm
Module area 1.201 m² 3.106 m² 1.905 m² apart
Weight 14.3 kg 37.9 kg -23.6 kg for 1.2 FullBlack 270W
Weight per kWp 53.0 kg/kWp 53.4 kg/kWp Effectively the same
Warranty and degradation
Product warranty 30 yrs 12 yrs +18 yrs for 1.2 FullBlack 270W
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.45 %/yr 0.45 %/yr Same
Technology
Cell technology Back Contact TOPCon Back Contact vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 64 132 68 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#4,636 vs #2,412
2.2 710 leads by 2,224 places
Power density
#4,557 vs #2,529
2.2 710 leads by 2,028 places
Heat behaviour
#515 vs #1,347
1.2 FullBlack 270W leads by 832 places
Weight
#6,740 vs #7,339
1.2 FullBlack 270W leads by 599 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#10,664 vs #830
2.2 710 leads by 9,834 places
05

More useful comparisons

Open the full database
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Heckert Solar ZEUS 1.2 FullBlack 270W vs Heckert Solar ZEUS 1.2 FullBlack 275W
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Heckert Solar ZEUS 2.2 710 vs Heckert Solar ZEUS 2.1-640
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06

Written summary

07

Questions about this pairing

Which panel is better: Heckert Solar ZEUS 1.2 FullBlack 270W or Heckert Solar ZEUS 2.2 710?
According to our database: Heckert Solar ZEUS 2.2 710 has higher module efficiency (22.90% vs 22.47%); Heckert Solar ZEUS 1.2 FullBlack 270 W tolerates heat better (temp coeff -0.260%/°C vs -0.280%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Heckert Solar ZEUS 1.2 FullBlack 270W and Heckert Solar ZEUS 2.2 710?
Heckert Solar ZEUS 1.2 FullBlack 270 W has a module efficiency of 22.47%, while Heckert Solar ZEUS 2.2 710 is 22.90%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Heckert Solar ZEUS 1.2 FullBlack 270W use vs Heckert Solar ZEUS 2.2 710?
Heckert Solar ZEUS 1.2 FullBlack 270 W uses Back Contact cells; Heckert Solar ZEUS 2.2 710 uses TOPCon. 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 Heckert Solar ZEUS 1.2 FullBlack 270W and Heckert Solar ZEUS 2.2 710?
Heckert Solar ZEUS 1.2 FullBlack 270 W has a 30 years power warranty; Heckert Solar ZEUS 2.2 710 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 Heckert Solar ZEUS 1.2 FullBlack 270W and Heckert Solar ZEUS 2.2 710 bifacial panels?
Both Heckert Solar ZEUS 1.2 FullBlack 270 W and Heckert Solar ZEUS 2.2 710 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.

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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.