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720W vs 650W 11 of 19 identical Swap Change panels

Solitek SOLID Framed White 720W vs Solitek SOLID Framed White 650W

Solitek
SOLID Framed White 720W
720 Wp 23.18 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Solitek
SOLID Framed White 650W
650 Wp 22.97 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

720W leads on the differences that matter

The largest is rated power: 70 W more power. 11 of 19 comparable parameters are identical.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs
01

What actually differs

8 of 19 parameters
Parameter 720W 650W Difference
Rated power 720 Wp 650 Wp 70 W more power
Weight 37.5 kg 34.2 kg 3.3 kg lighter
Open-circuit voltage 49.03 V 44.28 V 4.75 V apart
Module area 3.106 m² 2.830 m² 0.276 m² apart
Module efficiency 23.18 % 22.97 % 0.21 pp more efficient
Cell count 132 120 12 cells apart
Voltage at max power 41.27 V 37.30 V 3.97 V apart
Dimensions 2384x1303x33 mm 2172x1303x30 mm 2384x1303x33 mm vs 2172x1303x30 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
Same temp coeff. for both panels (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
720W
24,157 kWh
650W
21,809 kWh
Lifetime gap
2,348 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 720W 650W
Standard test conditions 25 °C 100.0% of rated power 720 W 650 W
Cool, bright day 40 °C 95.5% of rated power 688 W 621 W
Typical summer roof 55 °C 91.0% of rated power 655 W 592 W
Hot roof 70 °C 86.5% of rated power 623 W 562 W
03

Full specification

Parameter 720W 650W Difference
Power and efficiency
Rated power 720 Wp 650 Wp +70 W for 720W
Module efficiency 23.18 % 22.97 % +0.21 pp for 720W
Power density 231.8 Wp/m² 229.7 Wp/m² Effectively the same
Open-circuit voltage 49.03 V 44.28 V 4.75 V apart
Voltage at max power 41.27 V 37.30 V 3.97 V apart
Short-circuit current 18.48 A 18.48 A Same
Current at max power 17.45 A 17.43 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 2172x1303x30 mm 2384x1303x33 mm vs 2172x1303x30 mm
Module area 3.106 m² 2.830 m² 0.276 m² apart
Weight 37.5 kg 34.2 kg -3.3 kg for 650W
Weight per kWp 52.1 kg/kWp 52.6 kg/kWp Effectively the same
Warranty and degradation
Product warranty 25 yrs 25 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 132 120 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#1,424 vs #2,237
720W leads by 813 places
Power density
#1,347 vs #2,160
720W leads by 813 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#5,516 vs #6,240
720W leads by 724 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#78 vs #551
720W leads by 473 places
05

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06

Written summary

07

Questions about this pairing

Which panel is better: Solitek SOLID Framed White 720W or Solitek SOLID Framed White 650W?
According to our database: Solitek SOLID Framed White 720 W has higher module efficiency (23.18% vs 22.97%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Solitek SOLID Framed White 720W and Solitek SOLID Framed White 650W?
Solitek SOLID Framed White 720 W has a module efficiency of 23.18%, while Solitek SOLID Framed White 650 W is 22.97%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Solitek SOLID Framed White 720W use vs Solitek SOLID Framed White 650W?
Solitek SOLID Framed White 720 W uses TOPCon cells; Solitek SOLID Framed White 650 W 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 Solitek SOLID Framed White 720W and Solitek SOLID Framed White 650W?
Solitek SOLID Framed White 720 W has a 30 years power warranty; Solitek SOLID Framed White 650 W 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 Solitek SOLID Framed White 720W and Solitek SOLID Framed White 650W bifacial panels?
Both Solitek SOLID Framed White 720 W and Solitek SOLID Framed White 650 W 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.