515W vs 475W 11 of 19 identical Swap Change panels

HT-SAAE HT54-18X(N)-515W vs HT-SAAE HT54-18X(N)-475W

Q: Which panel is better: HT-SAAE HT54-18X(N)-515W or HT-SAAE HT54-18X(N)-475W?

According to our database: HT-SAAE HT54-18X(N)-475W has higher module efficiency (23.80% vs 23.20%). 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)-515W and HT-SAAE HT54-18X(N)-475W?

HT-SAAE HT54-18X(N)-515W has a module efficiency of 23.20%, 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)-515W use vs HT-SAAE HT54-18X(N)-475W?

HT-SAAE HT54-18X(N)-515W 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)-515W and HT-SAAE HT54-18X(N)-475W?

HT-SAAE HT54-18X(N)-515W 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)-515W

515 Wp 23.20 % 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 rated power: 40 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 515W 475W Difference

Rated power 515 Wp 475 Wp 40 W more power

Module efficiency 23.20 % 23.80 % 0.60 pp more efficient

Power density 231.7 Wp/m² 237.7 Wp/m² 6.0 Wp/m² higher

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 16.20 A 14.85 A 1.35 A apart

Current at max power 15.57 A 14.20 A 1.37 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.

515W

17,279 kWh

475W

15,937 kWh

Lifetime gap

1,342 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 515W 475W

Standard test conditions 25 °C 100.0% of rated power 515 W 475 W

Cool, bright day 40 °C 95.3% of rated power 491 W 453 W

Typical summer roof 55 °C 90.7% of rated power 467 W 431 W

Hot roof 70 °C 86.0% of rated power 443 W 409 W

Full specification

Parameter 515W 475W Difference

Power and efficiency

Rated power 515 Wp 475 Wp +40 W for 515W

Module efficiency 23.20 % 23.80 % +0.60 pp for 475W

Power density 231.7 Wp/m² 237.7 Wp/m² +6.0 Wp/m² for 475W

Open-circuit voltage 39.90 V 40.00 V Effectively the same

Voltage at max power 33.10 V 33.50 V Effectively the same

Short-circuit current 16.20 A 14.85 A 1.35 A apart

Current at max power 15.57 A 14.20 A 1.37 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 45.6 kg/kWp 44.2 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

#1,349 vs #462

475W leads by 887 places

Power density

#1,491 vs #497

475W leads by 994 places

Heat behaviour

#8,069 vs #8,069

Tied - the same position in the database

Weight

#789 vs #396

475W leads by 393 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#2,176 vs #2,711

515W leads by 535 places

More useful comparisons

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Written summary

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Questions about this pairing

Which panel is better: HT-SAAE HT54-18X(N)-515W 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 23.20%). 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)-515W and HT-SAAE HT54-18X(N)-475W?

HT-SAAE HT54-18X(N)-515 W has a module efficiency of 23.20%, 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)-515W use vs HT-SAAE HT54-18X(N)-475W?

HT-SAAE HT54-18X(N)-515 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)-515W and HT-SAAE HT54-18X(N)-475W?

HT-SAAE HT54-18X(N)-515 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.