455W vs 425W 11 of 19 identical Swap Change panels

HT-SAAE HT54-18X(ND)-F 455W vs HT-SAAE HT54-18X(ND)-F 425W

Q: Which panel is better: HT-SAAE HT54-18X(ND)-F 455W or HT-SAAE HT54-18X(ND)-F 425W?

According to our database: HT-SAAE HT54-18X(ND)-F 455W has higher module efficiency (22.80% vs 21.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of HT-SAAE HT54-18X(ND)-F 455W and HT-SAAE HT54-18X(ND)-F 425W?

HT-SAAE HT54-18X(ND)-F 455W has a module efficiency of 22.80%, while HT-SAAE HT54-18X(ND)-F 425W is 21.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does HT-SAAE HT54-18X(ND)-F 455W use vs HT-SAAE HT54-18X(ND)-F 425W?

HT-SAAE HT54-18X(ND)-F 455W uses TOPCon cells; HT-SAAE HT54-18X(ND)-F 425W uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on HT-SAAE HT54-18X(ND)-F 455W and HT-SAAE HT54-18X(ND)-F 425W?

HT-SAAE HT54-18X(ND)-F 455W has a 30 years power warranty; HT-SAAE HT54-18X(ND)-F 425W 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.

Q: Are HT-SAAE HT54-18X(ND)-F 455W and HT-SAAE HT54-18X(ND)-F 425W bifacial panels?

Both HT-SAAE HT54-18X(ND)-F 455W and HT-SAAE HT54-18X(ND)-F 425W 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.

HT-SAAE

HT54-18X(ND)-F 455W

455 Wp 22.80 % TOPCon Bifacial

Open panel page Datasheet PDF

HT-SAAE

HT54-18X(ND)-F 425W

425 Wp 21.80 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

455W leads on the differences that matter

The largest is module efficiency: 1.00 pp more efficient. 11 of 19 comparable parameters are identical.

See all 8 differences

How alike are they

11 of 19 comparable
parameters are identical

identical differs

What actually differs

8 of 19 parameters

Parameter 455W 425W Difference

Module efficiency 22.80 % 21.80 % 1.00 pp more efficient

Power density 227.7 Wp/m² 217.6 Wp/m² 10.1 Wp/m² higher

Rated power 455 Wp 425 Wp 30 W more power

Module area 1.998 m² 1.953 m² 0.045 m² apart

Weight 25.0 kg 24.0 kg 1.0 kg lighter

Dimensions 1762x1134x30 mm 1722x1134x30 mm 1762x1134x30 mm vs 1722x1134x30 mm

Voltage at max power 32.70 V 31.70 V 1.00 V apart

Current at max power 13.92 A 13.42 A 0.50 A apart

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

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.

455W

15,266 kWh

425W

14,260 kWh

Lifetime gap

1,006 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 455W 425W

Standard test conditions 25 °C 100.0% of rated power 455 W 425 W

Cool, bright day 40 °C 95.3% of rated power 434 W 405 W

Typical summer roof 55 °C 90.7% of rated power 413 W 385 W

Hot roof 70 °C 86.0% of rated power 392 W 366 W

Full specification

Parameter 455W 425W Difference

Power and efficiency

Rated power 455 Wp 425 Wp +30 W for 455W

Module efficiency 22.80 % 21.80 % +1.00 pp for 455W

Power density 227.7 Wp/m² 217.6 Wp/m² +10.1 Wp/m² for 455W

Open-circuit voltage 39.10 V 38.20 V Effectively the same

Voltage at max power 32.70 V 31.70 V 1.00 V apart

Short-circuit current 14.61 A 14.15 A Effectively the same

Current at max power 13.92 A 13.42 A 0.50 A apart

Temperature

Temperature coefficient -0.310 %/°C -0.310 %/°C Same

Mechanical

Dimensions 1762x1134x30 mm 1722x1134x30 mm 1762x1134x30 mm vs 1722x1134x30 mm

Module area 1.998 m² 1.953 m² 0.045 m² apart

Weight 25.0 kg 24.0 kg -1.0 kg for 425W

Weight per kWp 54.9 kg/kWp 56.5 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 Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#2,714 vs #7,022

455W leads by 4,308 places

Power density

#2,888 vs #7,172

455W leads by 4,284 places

Heat behaviour

#8,005 vs #8,005

Tied - the same position in the database

Weight

#9,326 vs #10,661

455W leads by 1,335 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#4,727 vs #6,929

455W leads by 2,202 places

More useful comparisons

Open the full database

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HT-SAAE HT54-18X(ND)-F 455W vs HT-SAAE HT54-18X(ND)-F 460W

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HT-SAAE HT54-18X(ND)-F 455W vs HT-SAAE HT54-18X(ND)-F 450W

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HT-SAAE HT54-18X(ND)-F 455W vs HT-SAAE HT54-18X(ND)-F 445W

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HT-SAAE HT54-18X(ND)-F 455W vs HT-SAAE HT54-18X(ND)-F 440W

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HT-SAAE HT54-18X(ND)-F 455W vs HT-SAAE HT54-18X(ND)-F 435W

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HT-SAAE HT54-18X(ND)-F 455W vs HT-SAAE HT54-18X(ND)-F 430W

6 differences, the largest is module efficiency

Written summary

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Questions about this pairing

Which panel is better: HT-SAAE HT54-18X(ND)-F 455W or HT-SAAE HT54-18X(ND)-F 425W?

According to our database: HT-SAAE HT54-18X(ND)-F 455 W has higher module efficiency (22.80% vs 21.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of HT-SAAE HT54-18X(ND)-F 455W and HT-SAAE HT54-18X(ND)-F 425W?

HT-SAAE HT54-18X(ND)-F 455 W has a module efficiency of 22.80%, while HT-SAAE HT54-18X(ND)-F 425 W is 21.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does HT-SAAE HT54-18X(ND)-F 455W use vs HT-SAAE HT54-18X(ND)-F 425W?

HT-SAAE HT54-18X(ND)-F 455 W uses TOPCon cells; HT-SAAE HT54-18X(ND)-F 425 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(ND)-F 455W and HT-SAAE HT54-18X(ND)-F 425W?

HT-SAAE HT54-18X(ND)-F 455 W has a 30 years power warranty; HT-SAAE HT54-18X(ND)-F 425 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 HT-SAAE HT54-18X(ND)-F 455W and HT-SAAE HT54-18X(ND)-F 425W bifacial panels?

Both HT-SAAE HT54-18X(ND)-F 455 W and HT-SAAE HT54-18X(ND)-F 425 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.

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.