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BWT66(715)-G12 vs BWT66(705)-G12 16 of 19 identical Swap Change panels

Sunova TS-BWT66(715)-G12 vs Sunova TS-BWT66(705)-G12

TS-BWT66(715)-G12
715 Wp 23.00 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
TS-BWT66(705)-G12
705 Wp 22.70 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

BWT66(715)-G12 leads on the differences that matter

The largest is module efficiency: 0.30 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter BWT66(715)-G12 BWT66(705)-G12 Difference
Module efficiency 23.00 % 22.70 % 0.30 pp more efficient
Power density 230.2 Wp/m² 227.0 Wp/m² 3.2 Wp/m² higher
Rated power 715 Wp 705 Wp 10 W more power
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
Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
BWT66(715)-G12
23,990 kWh
BWT66(705)-G12
23,654 kWh
Lifetime gap
336 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario BWT66(715)-G12 BWT66(705)-G12
Standard test conditions 25 °C 100.0% of rated power 715 W 705 W
Cool, bright day 40 °C 95.7% of rated power 684 W 674 W
Typical summer roof 55 °C 91.3% of rated power 653 W 644 W
Hot roof 70 °C 87.0% of rated power 622 W 613 W
03

Full specification

Parameter BWT66(715)-G12 BWT66(705)-G12 Difference
Power and efficiency
Rated power 715 Wp 705 Wp +10 W for BWT66(715)-G12
Module efficiency 23.00 % 22.70 % +0.30 pp for BWT66(715)-G12
Power density 230.2 Wp/m² 227.0 Wp/m² +3.2 Wp/m² for BWT66(715)-G12
Open-circuit voltage 46.68 V 46.58 V Effectively the same
Voltage at max power 40.35 V 39.92 V Effectively the same
Short-circuit current 18.92 A 18.80 A Effectively the same
Current at max power 17.72 A 17.66 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2384x1303x35 mm 2384x1303x35 mm Same
Module area 3.106 m² 3.106 m² Same
Weight 33.9 kg 33.9 kg Same
Weight per kWp 47.4 kg/kWp 48.1 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 TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#1,919 vs #3,307
BWT66(715)-G12 leads by 1,388 places
Power density
#2,018 vs #3,361
BWT66(715)-G12 leads by 1,343 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#1,670 vs #2,052
BWT66(715)-G12 leads by 382 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#434 vs #678
BWT66(715)-G12 leads by 244 places
05

More useful comparisons

Open the full database
Same series, other bin
Sunova TS-BWT66(715)-G12 vs Sunova TS-BGT66(720)-G12
6 differences, the largest is weight
Same series, other bin
Sunova TS-BWT66(715)-G12 vs Sunova TS-BWT66(720)-G12
One difference: module efficiency
Same series, other bin
Sunova TS-BWT66(715)-G12 vs Sunova TS-BGT66(715)-G12
5 differences, the largest is weight
Same series, other bin
Sunova TS-BWT66(715)-G12 vs Sunova TS-BGT66(710)-G12
6 differences, the largest is weight
Same series, other bin
Sunova TS-BWT66(715)-G12 vs Sunova TS-BWT66(710)-G12
The same specification on paper
Same series, other bin
Sunova TS-BWT66(715)-G12 vs Sunova TS-BGT66(705)-G12
9 differences, the largest is weight
06

Written summary

07

Questions about this pairing

Which panel is better: Sunova TS-BWT66(715)-G12 or Sunova TS-BWT66(705)-G12?
According to our database: Sunova TS-BWT66(715)-G12 has higher module efficiency (23.00% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sunova TS-BWT66(715)-G12 and Sunova TS-BWT66(705)-G12?
Sunova TS-BWT66(715)-G12 has a module efficiency of 23.00%, while Sunova TS-BWT66(705)-G12 is 22.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sunova TS-BWT66(715)-G12 use vs Sunova TS-BWT66(705)-G12?
Sunova TS-BWT66(715)-G12 uses TOPCon cells; Sunova TS-BWT66(705)-G12 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 Sunova TS-BWT66(715)-G12 and Sunova TS-BWT66(705)-G12?
Sunova TS-BWT66(715)-G12 has a 30 years power warranty; Sunova TS-BWT66(705)-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-BWT66(715)-G12 and Sunova TS-BWT66(705)-G12 bifacial panels?
Both Sunova TS-BWT66(715)-G12 and Sunova TS-BWT66(705)-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.