475W vs 520W 11 of 19 identical Swap Change panels

HT-SAAE HT54-18X(N)-475W vs HT-SAAE HT54-18X(N)-520W

Q: Which panel is better: HT-SAAE HT54-18X(N)-475W or HT-SAAE HT54-18X(N)-520W?

According to our database: HT-SAAE HT54-18X(N)-475W has higher module efficiency (23.80% vs 23.40%). 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(N)-475W and HT-SAAE HT54-18X(N)-520W?

HT-SAAE HT54-18X(N)-475W has a module efficiency of 23.80%, while HT-SAAE HT54-18X(N)-520W is 23.40%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does HT-SAAE HT54-18X(N)-475W use vs HT-SAAE HT54-18X(N)-520W?

HT-SAAE HT54-18X(N)-475W uses TOPCon cells; HT-SAAE HT54-18X(N)-520W 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(N)-475W and HT-SAAE HT54-18X(N)-520W?

HT-SAAE HT54-18X(N)-475W has a 30 years power warranty; HT-SAAE HT54-18X(N)-520W 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.

HT-SAAE

HT54-18X(N)-475W

475 Wp 23.80 % TOPCon

Open panel page Datasheet PDF

HT-SAAE

HT54-18X(N)-520W

520 Wp 23.40 % TOPCon

Open panel page Datasheet PDF

The verdict

8 differences, and they point both ways

The largest is rated power: 45 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

What actually differs

8 of 19 parameters

Parameter 475W 520W Difference

Rated power 475 Wp 520 Wp 45 W more power

Module efficiency 23.80 % 23.40 % 0.40 pp more efficient

Module area 1.998 m² 2.223 m² 0.225 m² apart

Weight 21.0 kg 23.5 kg 2.5 kg lighter

Short-circuit current 14.85 A 16.26 A 1.41 A apart

Power density 237.7 Wp/m² 234.0 Wp/m² 3.8 Wp/m² higher

Current at max power 14.20 A 15.67 A 1.47 A apart

Dimensions 1762x1134x30 mm 1960x1134x30 mm 1762x1134x30 mm vs 1960x1134x30 mm

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.

475W

15,937 kWh

520W

17,447 kWh

Lifetime gap

1,510 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 475W 520W

Standard test conditions 25 °C 100.0% of rated power 475 W 520 W

Cool, bright day 40 °C 95.3% of rated power 453 W 496 W

Typical summer roof 55 °C 90.7% of rated power 431 W 472 W

Hot roof 70 °C 86.0% of rated power 409 W 447 W

Full specification

Parameter 475W 520W Difference

Power and efficiency

Rated power 475 Wp 520 Wp +45 W for 520W

Module efficiency 23.80 % 23.40 % +0.40 pp for 475W

Power density 237.7 Wp/m² 234.0 Wp/m² +3.8 Wp/m² for 475W

Open-circuit voltage 40.00 V 40.00 V Same

Voltage at max power 33.50 V 33.20 V Effectively the same

Short-circuit current 14.85 A 16.26 A 1.41 A apart

Current at max power 14.20 A 15.67 A 1.47 A apart

Temperature

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

Mechanical

Dimensions 1762x1134x30 mm 1960x1134x30 mm 1762x1134x30 mm vs 1960x1134x30 mm

Module area 1.998 m² 2.223 m² 0.225 m² apart

Weight 21.0 kg 23.5 kg -2.5 kg for 475W

Weight per kWp 44.2 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

Against the whole database

14,129 panels

Efficiency

#462 vs #919

475W leads by 457 places

Power density

#497 vs #935

475W leads by 438 places

Heat behaviour

#8,069 vs #8,069

Tied - the same position in the database

Weight

#396 vs #635

475W leads by 239 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#2,711 vs #1,916

520W leads by 795 places

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Written summary

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Questions about this pairing

Which panel is better: HT-SAAE HT54-18X(N)-475W or HT-SAAE HT54-18X(N)-520W?

According to our database: HT-SAAE HT54-18X(N)-475 W has higher module efficiency (23.80% vs 23.40%). 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)-475W and HT-SAAE HT54-18X(N)-520W?

HT-SAAE HT54-18X(N)-475 W has a module efficiency of 23.80%, 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)-475W use vs HT-SAAE HT54-18X(N)-520W?

HT-SAAE HT54-18X(N)-475 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)-475W and HT-SAAE HT54-18X(N)-520W?

HT-SAAE HT54-18X(N)-475 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.