HT-SAAE HT54-18X(N)-505W vs HT-SAAE HT54-18X(N)-520W
VS
The verdict
520W leads on the differences that matter
The largest is module efficiency: 0.70 pp more efficient. 16 of 19 comparable parameters are identical.
See all 3 differencesHow alike are they
16
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
3 of 19 parameters
What actually differs
Parameter
505W
520W
Difference
Module efficiency
22.70 %
23.40 %
0.70 pp more efficient
Power density
227.2 Wp/m²
234.0 Wp/m²
6.7 Wp/m² higher
Rated power
505 Wp
520 Wp
15 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 (-0.310 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
505W
16,944 kWh
520W
17,447 kWh
Lifetime gap
503 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
505W
520W
Standard test conditions
25 °C
100.0% of rated power
505 W
520 W
Cool, bright day
40 °C
95.3% of rated power
482 W
496 W
Typical summer roof
55 °C
90.7% of rated power
458 W
472 W
Hot roof
70 °C
86.0% of rated power
435 W
447 W
03
Full specification
Parameter
505W
520W
Difference
Power and efficiency
Rated power
505 Wp
520 Wp
+15 W for 520W
Module efficiency
22.70 %
23.40 %
+0.70 pp for 520W
Power density
227.2 Wp/m²
234.0 Wp/m²
+6.7 Wp/m² for 520W
Open-circuit voltage
39.50 V
40.00 V
Effectively the same
Voltage at max power
32.70 V
33.20 V
Effectively the same
Short-circuit current
16.10 A
16.26 A
Effectively the same
Current at max power
15.45 A
15.67 A
Effectively the same
Temperature
Temperature coefficient
-0.310 %/°C
-0.310 %/°C
Same
Mechanical
Dimensions
1960x1134x30 mm
1960x1134x30 mm
Same
Module area
2.223 m²
2.223 m²
Same
Weight
23.5 kg
23.5 kg
Same
Weight per kWp
46.5 kg/kWp
45.2 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
30 yrs
30 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
108
108
Same
Bifacial
No
No
Same
04
14,129 panels
Against the whole database
Efficiency
#3,364
vs
#919
520W leads by 2,445 places
Power density
#3,295
vs
#935
520W leads by 2,360 places
Heat behaviour
#8,069
vs
#8,069
Tied - the same position in the database
Weight
#1,199
vs
#635
520W leads by 564 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#3,009
vs
#1,916
520W leads by 1,093 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: HT-SAAE HT54-18X(N)-505W or HT-SAAE HT54-18X(N)-520W?
According to our database: HT-SAAE HT54-18X(N)-520 W has higher module efficiency (23.40% vs 22.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of HT-SAAE HT54-18X(N)-505W and HT-SAAE HT54-18X(N)-520W?
HT-SAAE HT54-18X(N)-505 W has a module efficiency of 22.70%, while HT-SAAE HT54-18X(N)-520 W is 23.40%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does HT-SAAE HT54-18X(N)-505W use vs HT-SAAE HT54-18X(N)-520W?
HT-SAAE HT54-18X(N)-505 W uses TOPCon cells; HT-SAAE HT54-18X(N)-520 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 HT-SAAE HT54-18X(N)-505W and HT-SAAE HT54-18X(N)-520W?
HT-SAAE HT54-18X(N)-505 W has a 30 years power warranty; HT-SAAE HT54-18X(N)-520 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.
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.