S435HG(FB) vs S440HG 17 of 18 identical Swap Change panels

Hyundai HiE-S435HG(FB) vs Hyundai HiE-S440HG

Q: Which panel is better: Hyundai HiE-S435HG(FB) or Hyundai HiE-S440HG?

According to our database: Hyundai HiE-S440HG has higher module efficiency (21.10% vs 20.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Hyundai HiE-S435HG(FB) and Hyundai HiE-S440HG?

Hyundai HiE-S435HG(FB) has a module efficiency of 20.90%, while Hyundai HiE-S440HG is 21.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Hyundai HiE-S435HG(FB) use vs Hyundai HiE-S440HG?

Hyundai HiE-S435HG(FB) uses PERC cells; Hyundai HiE-S440HG uses PERC. 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 Hyundai HiE-S435HG(FB) and Hyundai HiE-S440HG?

Hyundai HiE-S435HG(FB) has a 25 years power warranty; Hyundai HiE-S440HG has a 25 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.

HiE-S435HG(FB)

435 Wp 20.90 % PERC

Open panel page Datasheet PDF

HiE-S440HG

440 Wp 21.10 % PERC

Open panel page Datasheet PDF

The verdict

S440HG leads on the differences that matter

The largest is module efficiency: 0.20 pp more efficient. 17 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See the one difference

How alike are they

17 of 18 comparable
parameters are identical

identical differs not published

What actually differs

1 of 18 parameters

Parameter S435HG(FB) S440HG Difference

Module efficiency 20.90 % 21.10 % 0.20 pp more efficient

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 (-0.340 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.

S435HG(FB)

14,098 kWh

S440HG

14,260 kWh

Lifetime gap

162 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario S435HG(FB) S440HG

Standard test conditions 25 °C 100.0% of rated power 435 W 440 W

Cool, bright day 40 °C 94.9% of rated power 413 W 418 W

Typical summer roof 55 °C 89.8% of rated power 391 W 395 W

Hot roof 70 °C 84.7% of rated power 368 W 373 W

Full specification

Parameter S435HG(FB) S440HG Difference

Power and efficiency

Rated power 435 Wp 440 Wp Effectively the same

Module efficiency 20.90 % 21.10 % +0.20 pp for S440HG

Power density 209.0 Wp/m² 211.4 Wp/m² Effectively the same

Open-circuit voltage 43.60 V 43.70 V Effectively the same

Voltage at max power 36.20 V 36.30 V Effectively the same

Short-circuit current 12.79 A 12.90 A Effectively the same

Current at max power 12.02 A 12.13 A Effectively the same

Temperature

Temperature coefficient -0.340 %/°C -0.340 %/°C Same

Mechanical

Dimensions 1899x1096x30 mm 1899x1096x30 mm Same

Module area 2.081 m² 2.081 m² Same

Weight 21.8 kg 21.8 kg Same

Weight per kWp 50.1 kg/kWp 49.5 kg/kWp Effectively the same

Warranty and degradation

Product warranty 25 yrs 25 yrs Same

Performance warranty 25 yrs 25 yrs Same

Annual degradation 0.55 %/yr 0.55 %/yr Same

Technology

Cell technology PERC PERC Same

Cell type Monocrystalline Monocrystalline Same

Cell count - - Neither datasheet publishes this

Bifacial No No Same

Against the whole database

14,129 panels

Efficiency

#10,148 vs #9,365

S440HG leads by 783 places

Power density

#10,262 vs #9,276

S440HG leads by 986 places

Heat behaviour

#8,846 vs #8,846

Tied - the same position in the database

Weight

#3,628 vs #3,118

S440HG leads by 510 places

Warranty

#9,912 vs #9,912

Tied - the same position in the database

Overall

#9,722 vs #9,385

S440HG leads by 337 places

More useful comparisons

Open the full database

Same series, other bin

Hyundai HiE-S435HG(FB) vs Hyundai HiE-S445HG

3 differences, the largest is module efficiency

Same series, other bin

Hyundai HiE-S435HG(FB) vs Hyundai HiE-S445HG(FB)

3 differences, the largest is module efficiency

Same series, other bin

Hyundai HiE-S435HG(FB) vs Hyundai HiE-S440HG(FB)

One difference: module efficiency

Same series, other bin

Hyundai HiE-S435HG(FB) vs Hyundai HiE-S435HG

The same specification on paper

Same series, other bin

Hyundai HiE-S435HG(FB) vs Hyundai HiE-S430HG(FB)

One difference: module efficiency

Same manufacturer

Hyundai HiE-S435HG(FB) vs Hyundai HiS-T640NJ

17 differences, the largest is module efficiency

Written summary

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Questions about this pairing

Which panel is better: Hyundai HiE-S435HG(FB) or Hyundai HiE-S440HG?

According to our database: Hyundai HiE-S440HG has higher module efficiency (21.10% vs 20.90%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Hyundai HiE-S435HG(FB) and Hyundai HiE-S440HG?

Hyundai HiE-S435HG(FB) has a module efficiency of 20.90%, while Hyundai HiE-S440HG is 21.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Hyundai HiE-S435HG(FB) use vs Hyundai HiE-S440HG?

Hyundai HiE-S435HG(FB) uses PERC cells; Hyundai HiE-S440HG uses PERC. 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 Hyundai HiE-S435HG(FB) and Hyundai HiE-S440HG?

Hyundai HiE-S435HG(FB) has a 25 years power warranty; Hyundai HiE-S440HG has a 25 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.

Shop prices: See 28 Hyundai offers

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.