Skip to main content
SOLID Framed Transparent 505 vs Forza 650 7 of 19 identical Swap Change panels

Solitek SOLID Framed Transparent 505 vs Solitek Forza 650

Solitek
SOLID Framed Transparent 505
505 Wp 22.31 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Solitek
Forza 650
650 Wp 22.97 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

Forza 650 leads on the differences that matter

The largest is module efficiency: 0.66 pp more efficient. 7 of 19 comparable parameters are identical.

See all 12 differences
How alike are they
7 of 19 comparable
parameters are identical
identical differs
01

What actually differs

12 of 19 parameters
Parameter SOLID Framed Transparent 505 Forza 650 Difference
Module efficiency 22.31 % 22.97 % 0.66 pp more efficient
Rated power 505 Wp 650 Wp 145 W more power
Weight 29.0 kg 34.2 kg 5.2 kg lighter
Product warranty 30 yrs 25 yrs 5 yrs longer
Power density 223.1 Wp/m² 229.7 Wp/m² 6.6 Wp/m² higher
Short-circuit current 14.25 A 18.48 A 4.23 A apart
Module area 2.263 m² 2.830 m² 0.567 m² apart
Weight per kWp 57.4 kg/kWp 52.6 kg/kWp 4.8 kg/kWp lighter
Annual degradation 0.31 %/yr 0.40 %/yr 0.09 %/yr slower
Open-circuit voltage 42.28 V 44.28 V 2.00 V apart
Current at max power 13.85 A 17.43 A 3.58 A apart
Dimensions 1996x1134x30 mm 2172x1303x30 mm 1996x1134x30 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.
SOLID Framed Transparent 505
17,181 kWh
Forza 650
21,809 kWh
Lifetime gap
4,628 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario SOLID Framed Transparent 505 Forza 650
Standard test conditions 25 °C 100.0% of rated power 505 W 650 W
Cool, bright day 40 °C 95.5% of rated power 482 W 621 W
Typical summer roof 55 °C 91.0% of rated power 460 W 592 W
Hot roof 70 °C 86.5% of rated power 437 W 562 W
03

Full specification

Parameter SOLID Framed Transparent 505 Forza 650 Difference
Power and efficiency
Rated power 505 Wp 650 Wp +145 W for Forza 650
Module efficiency 22.31 % 22.97 % +0.66 pp for Forza 650
Power density 223.1 Wp/m² 229.7 Wp/m² +6.6 Wp/m² for Forza 650
Open-circuit voltage 42.28 V 44.28 V 2.00 V apart
Voltage at max power 36.47 V 37.30 V Effectively the same
Short-circuit current 14.25 A 18.48 A 4.23 A apart
Current at max power 13.85 A 17.43 A 3.58 A apart
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 1996x1134x30 mm 2172x1303x30 mm 1996x1134x30 mm vs 2172x1303x30 mm
Module area 2.263 m² 2.830 m² 0.567 m² apart
Weight 29.0 kg 34.2 kg -5.2 kg for SOLID Framed Transparent 505
Weight per kWp 57.4 kg/kWp 52.6 kg/kWp -4.8 kg/kWp for Forza 650
Warranty and degradation
Product warranty 30 yrs 25 yrs +5 yrs for SOLID Framed Transparent 505
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.31 %/yr 0.40 %/yr -0.09 %/yr for SOLID Framed Transparent 505
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 120 120 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#5,082 vs #2,237
Forza 650 leads by 2,845 places
Power density
#5,068 vs #2,160
Forza 650 leads by 2,908 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#11,209 vs #6,240
Forza 650 leads by 4,969 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,634 vs #551
Forza 650 leads by 3,083 places
05

More useful comparisons

Open the full database
Same series, other bin
Solitek
Solitek Forza 650 vs Solitek Forza 720
8 differences, the largest is rated power
Same manufacturer
Solitek
Solitek SOLID Framed Transparent 505 vs Solitek SOLID Framed White 720W
14 differences, the largest is module efficiency
Same manufacturer
Solitek
Solitek SOLID Framed Transparent 505 vs Solitek SOLID Framed White 650W
12 differences, the largest is module efficiency
Same manufacturer
Solitek
Solitek SOLID Framed Transparent 505 vs Solitek Magnus 510
9 differences, the largest is module efficiency
Same manufacturer
Solitek
Solitek SOLID Framed Transparent 505 vs Solitek SOLRIF D Black 455
12 differences, the largest is rated power
Same manufacturer
Solitek
Solitek SOLID Framed Transparent 505 vs Solitek SOLID Semi-Clear Framed 455 W
12 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Solitek SOLID Framed Transparent 505 or Solitek Forza 650?
According to our database: Solitek Forza 650 has higher module efficiency (22.97% vs 22.31%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Solitek SOLID Framed Transparent 505 and Solitek Forza 650?
Solitek SOLID Framed Transparent 505 has a module efficiency of 22.31%, while Solitek Forza 650 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 Transparent 505 use vs Solitek Forza 650?
Solitek SOLID Framed Transparent 505 uses TOPCon cells; Solitek Forza 650 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 Transparent 505 and Solitek Forza 650?
Solitek SOLID Framed Transparent 505 has a 30 years power warranty; Solitek Forza 650 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 Transparent 505 and Solitek Forza 650 bifacial panels?
Both Solitek SOLID Framed Transparent 505 and Solitek Forza 650 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.

Shop prices: See 20 Solitek offers

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.