505W vs 475W 10 of 19 identical Swap Change panels

HT-SAAE HT54-18X(N)-505W vs HT-SAAE HT54-18X(N)-475W

Q: Which panel is better: HT-SAAE HT54-18X(N)-505W or HT-SAAE HT54-18X(N)-475W?

According to our database: HT-SAAE HT54-18X(N)-475W has higher module efficiency (23.80% vs 22.70%). 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)-505W and HT-SAAE HT54-18X(N)-475W?

HT-SAAE HT54-18X(N)-505W has a module efficiency of 22.70%, while HT-SAAE HT54-18X(N)-475W is 23.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does HT-SAAE HT54-18X(N)-505W use vs HT-SAAE HT54-18X(N)-475W?

HT-SAAE HT54-18X(N)-505W uses TOPCon cells; HT-SAAE HT54-18X(N)-475W 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)-505W and HT-SAAE HT54-18X(N)-475W?

HT-SAAE HT54-18X(N)-505W has a 30 years power warranty; HT-SAAE HT54-18X(N)-475W 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)-505W

505 Wp 22.70 % TOPCon

Open panel page Datasheet PDF

HT-SAAE

HT54-18X(N)-475W

475 Wp 23.80 % TOPCon

Open panel page Datasheet PDF

The verdict

475W leads on the differences that matter

The largest is module efficiency: 1.10 pp more efficient. 10 of 19 comparable parameters are identical.

See all 9 differences

How alike are they

10 of 19 comparable
parameters are identical

identical differs

What actually differs

9 of 19 parameters

Parameter 505W 475W Difference

Module efficiency 22.70 % 23.80 % 1.10 pp more efficient

Power density 227.2 Wp/m² 237.7 Wp/m² 10.5 Wp/m² higher

Rated power 505 Wp 475 Wp 30 W more power

Module area 2.223 m² 1.998 m² 0.225 m² apart

Weight 23.5 kg 21.0 kg 2.5 kg lighter

Short-circuit current 16.10 A 14.85 A 1.25 A apart

Weight per kWp 46.5 kg/kWp 44.2 kg/kWp 2.3 kg/kWp lighter

Current at max power 15.45 A 14.20 A 1.25 A apart

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

505W

16,944 kWh

475W

15,937 kWh

Lifetime gap

1,007 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 505W 475W

Standard test conditions 25 °C 100.0% of rated power 505 W 475 W

Cool, bright day 40 °C 95.3% of rated power 482 W 453 W

Typical summer roof 55 °C 90.7% of rated power 458 W 431 W

Hot roof 70 °C 86.0% of rated power 435 W 409 W

Full specification

Parameter 505W 475W Difference

Power and efficiency

Rated power 505 Wp 475 Wp +30 W for 505W

Module efficiency 22.70 % 23.80 % +1.10 pp for 475W

Power density 227.2 Wp/m² 237.7 Wp/m² +10.5 Wp/m² for 475W

Open-circuit voltage 39.50 V 40.00 V Effectively the same

Voltage at max power 32.70 V 33.50 V Effectively the same

Short-circuit current 16.10 A 14.85 A 1.25 A apart

Current at max power 15.45 A 14.20 A 1.25 A apart

Temperature

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

Mechanical

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

Module area 2.223 m² 1.998 m² 0.225 m² apart

Weight 23.5 kg 21.0 kg -2.5 kg for 475W

Weight per kWp 46.5 kg/kWp 44.2 kg/kWp -2.3 kg/kWp for 475W

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

#3,364 vs #462

475W leads by 2,902 places

Power density

#3,295 vs #497

475W leads by 2,798 places

Heat behaviour

#8,069 vs #8,069

Tied - the same position in the database

Weight

#1,199 vs #396

475W leads by 803 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#3,009 vs #2,711

475W leads by 298 places

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Written summary

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Questions about this pairing

Which panel is better: HT-SAAE HT54-18X(N)-505W or HT-SAAE HT54-18X(N)-475W?

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

HT-SAAE HT54-18X(N)-505 W has a module efficiency of 22.70%, while HT-SAAE HT54-18X(N)-475 W is 23.80%. 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)-475W?

HT-SAAE HT54-18X(N)-505 W uses TOPCon cells; HT-SAAE HT54-18X(N)-475 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)-475W?

HT-SAAE HT54-18X(N)-505 W has a 30 years power warranty; HT-SAAE HT54-18X(N)-475 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.