HT-SAAE HT66-18X(N)-625W vs HT-SAAE HT66-18X(N)-620W
VS
The verdict
Identical on every published parameter
All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.
How alike are they
19
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
0 of 19 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
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.
625W
20,970 kWh
620W
20,802 kWh
Lifetime gap
168 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
625W
620W
Standard test conditions
25 °C
100.0% of rated power
625 W
620 W
Cool, bright day
40 °C
95.3% of rated power
596 W
591 W
Typical summer roof
55 °C
90.7% of rated power
567 W
562 W
Hot roof
70 °C
86.0% of rated power
538 W
534 W
03
Full specification
Parameter
625W
620W
Difference
Power and efficiency
Rated power
625 Wp
620 Wp
Effectively the same
Module efficiency
23.10 %
23.00 %
Effectively the same
Power density
231.4 Wp/m²
229.5 Wp/m²
Effectively the same
Open-circuit voltage
48.50 V
48.30 V
Effectively the same
Voltage at max power
40.40 V
40.20 V
Effectively the same
Short-circuit current
16.20 A
16.15 A
Effectively the same
Current at max power
15.48 A
15.43 A
Effectively the same
Temperature
Temperature coefficient
-0.310 %/°C
-0.310 %/°C
Same
Mechanical
Dimensions
2382x1134x35 mm
2382x1134x35 mm
Same
Module area
2.701 m²
2.701 m²
Same
Weight
29.0 kg
29.0 kg
Same
Weight per kWp
46.4 kg/kWp
46.8 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
132
132
Same
Bifacial
No
No
Same
04
14,129 panels
Against the whole database
Efficiency
#1,617
vs
#1,970
625W leads by 353 places
Power density
#1,558
vs
#2,243
625W leads by 685 places
Heat behaviour
#8,069
vs
#8,069
Tied - the same position in the database
Weight
#1,141
vs
#1,343
625W leads by 202 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#399
vs
#509
625W leads by 110 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 HT66-18X(N)-625W or HT-SAAE HT66-18X(N)-620W?
According to our database: HT-SAAE HT66-18X(N)-625 W has higher module efficiency (23.10% vs 23.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of HT-SAAE HT66-18X(N)-625W and HT-SAAE HT66-18X(N)-620W?
HT-SAAE HT66-18X(N)-625 W has a module efficiency of 23.10%, while HT-SAAE HT66-18X(N)-620 W is 23.00%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does HT-SAAE HT66-18X(N)-625W use vs HT-SAAE HT66-18X(N)-620W?
HT-SAAE HT66-18X(N)-625 W uses TOPCon cells; HT-SAAE HT66-18X(N)-620 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 HT66-18X(N)-625W and HT-SAAE HT66-18X(N)-620W?
HT-SAAE HT66-18X(N)-625 W has a 30 years power warranty; HT-SAAE HT66-18X(N)-620 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.