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BGT66(615)-G11 vs BGT66(720)-G12 10 of 19 identical Swap Change panels

Sunova TS-BGT66(615)-G11 vs Sunova TS-BGT66(720)-G12

TS-BGT66(615)-G11
615 Wp 22.80 % N-type Bifacial
Open panel page Datasheet PDF
VS
TS-BGT66(720)-G12
720 Wp 23.20 % N-type Bifacial
Open panel page Datasheet PDF
The verdict

BGT66(720)-G12 leads on the differences that matter

The largest is rated power: 105 W more power. 10 of 19 comparable parameters are identical.

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

What actually differs

9 of 19 parameters
Parameter BGT66(615)-G11 BGT66(720)-G12 Difference
Rated power 615 Wp 720 Wp 105 W more power
Weight 32.5 kg 37.8 kg 5.3 kg lighter
Module efficiency 22.80 % 23.20 % 0.40 pp more efficient
Short-circuit current 15.89 A 18.48 A 2.59 A apart
Module area 2.701 m² 3.106 m² 0.405 m² apart
Power density 227.7 Wp/m² 231.8 Wp/m² 4.1 Wp/m² higher
Temperature coefficient -0.290 %/°C -0.300 %/°C 0.010 %/°C better in heat
Current at max power 14.98 A 17.42 A 2.44 A apart
Dimensions 2382x1134x35 mm 2384x1303x35 mm 2382x1134x35 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
BGT66(615)-G11
20,634 kWh
BGT66(720)-G12
24,157 kWh
Lifetime gap
3,523 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario BGT66(615)-G11 BGT66(720)-G12
Standard test conditions 25 °C 100.0% of rated power 615 W 720 W
Cool, bright day 40 °C 95.5% of rated power 588 W 688 W
Typical summer roof 55 °C 91.0% of rated power 561 W 655 W
Hot roof 70 °C 86.5% of rated power 535 W 623 W
03

Full specification

Parameter BGT66(615)-G11 BGT66(720)-G12 Difference
Power and efficiency
Rated power 615 Wp 720 Wp +105 W for BGT66(720)-G12
Module efficiency 22.80 % 23.20 % +0.40 pp for BGT66(720)-G12
Power density 227.7 Wp/m² 231.8 Wp/m² +4.1 Wp/m² for BGT66(720)-G12
Open-circuit voltage 49.30 V 49.40 V Effectively the same
Voltage at max power 40.98 V 41.30 V Effectively the same
Short-circuit current 15.89 A 18.48 A 2.59 A apart
Current at max power 14.98 A 17.42 A 2.44 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.300 %/°C +0.010 %/°C for BGT66(615)-G11
Mechanical
Dimensions 2382x1134x35 mm 2384x1303x35 mm 2382x1134x35 mm vs 2384x1303x35 mm
Module area 2.701 m² 3.106 m² 0.405 m² apart
Weight 32.5 kg 37.8 kg -5.3 kg for BGT66(615)-G11
Weight per kWp 52.8 kg/kWp 52.5 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology N-type N-type Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,714 vs #1,306
BGT66(720)-G12 leads by 1,408 places
Power density
#3,077 vs #1,347
BGT66(720)-G12 leads by 1,730 places
Heat behaviour
#2,165 vs #6,093
BGT66(615)-G11 leads by 3,928 places
Weight
#6,546 vs #6,043
BGT66(720)-G12 leads by 503 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,324 vs #339
BGT66(720)-G12 leads by 1,985 places
05

More useful comparisons

Open the full database
Same series, other bin
Sunova TS-BGT66(615)-G11 vs Sunova TS-BGT66(715)-G12
8 differences, the largest is rated power
Same series, other bin
Sunova TS-BGT66(615)-G11 vs Sunova TS-BGT66(710)-G12
7 differences, the largest is rated power
Same series, other bin
Sunova TS-BGT66(615)-G11 vs Sunova TS-BGT66(705)-G12
7 differences, the largest is rated power
Same series, other bin
Sunova TS-BGT66(615)-G11 vs Sunova TS-BGT66(700)-G12
8 differences, the largest is rated power
Same series, other bin
Sunova TS-BGT66(615)-G11 vs Sunova TS-BGT66(620)-G11
One difference: module efficiency
Same series, other bin
Sunova TS-BGT66(615)-G11 vs Sunova TS-BGT66(610)-G11
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Sunova TS-BGT66(615)-G11 or Sunova TS-BGT66(720)-G12?
According to our database: Sunova TS-BGT66(720)-G12 has higher module efficiency (23.20% vs 22.80%); Sunova TS-BGT66(615)-G11 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 Sunova TS-BGT66(615)-G11 and Sunova TS-BGT66(720)-G12?
Sunova TS-BGT66(615)-G11 has a module efficiency of 22.80%, while Sunova TS-BGT66(720)-G12 is 23.20%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sunova TS-BGT66(615)-G11 use vs Sunova TS-BGT66(720)-G12?
Sunova TS-BGT66(615)-G11 uses N-type cells; Sunova TS-BGT66(720)-G12 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 Sunova TS-BGT66(615)-G11 and Sunova TS-BGT66(720)-G12?
Sunova TS-BGT66(615)-G11 has a 30 years power warranty; Sunova TS-BGT66(720)-G12 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 Sunova TS-BGT66(615)-G11 and Sunova TS-BGT66(720)-G12 bifacial panels?
Both Sunova TS-BGT66(615)-G11 and Sunova TS-BGT66(720)-G12 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.

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.