HN21N-66HT750W vs HN18-72H570W 6 of 19 identical Swap Change panels

Hanersun HN21N-66HT750W vs Hanersun HN18-72H570W

Q: Which panel is better: Hanersun HN21N-66HT750W or Hanersun HN18-72H570W?

According to our database: Hanersun HN21N-66HT750W has higher module efficiency (24.10% vs 22.07%); Hanersun HN21N-66HT750W tolerates heat better (temp coeff -0.280%/°C vs -0.310%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Hanersun HN21N-66HT750W and Hanersun HN18-72H570W?

Hanersun HN21N-66HT750W has a module efficiency of 24.10%, while Hanersun HN18-72H570W is 22.07%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Hanersun HN21N-66HT750W use vs Hanersun HN18-72H570W?

Hanersun HN21N-66HT750W uses TOPCon cells; Hanersun HN18-72H570W 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 Hanersun HN21N-66HT750W and Hanersun HN18-72H570W?

Hanersun HN21N-66HT750W has a 30 years power warranty; Hanersun HN18-72H570W 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.

Q: Are Hanersun HN21N-66HT750W and Hanersun HN18-72H570W bifacial panels?

Hanersun HN21N-66HT750W is bifacial (captures light from both faces); Hanersun HN18-72H570W is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Hanersun

HN21N-66HT750W

750 Wp 24.10 % TOPCon Bifacial

Open panel page Datasheet PDF

Hanersun

HN18-72H570W

570 Wp 22.07 % TOPCon

Open panel page Datasheet PDF

The verdict

HN21N-66HT750W leads on the differences that matter

The largest is module efficiency: 2.03 pp more efficient. 6 of 19 comparable parameters are identical.

See all 13 differences

How alike are they

6 of 19 comparable
parameters are identical

identical differs

What actually differs

13 of 19 parameters

Parameter HN21N-66HT750W HN18-72H570W Difference

Module efficiency 24.10 % 22.07 % 2.03 pp more efficient

Rated power 750 Wp 570 Wp 180 W more power

Power density 241.4 Wp/m² 220.7 Wp/m² 20.8 Wp/m² higher

Performance warranty 30 yrs 25 yrs 5 yrs longer

Temperature coefficient -0.280 %/°C -0.310 %/°C 0.030 %/°C better in heat

Weight 37.4 kg 28.5 kg 8.9 kg lighter

Product warranty 15 yrs 12 yrs 3 yrs longer

Short-circuit current 18.74 A 14.11 A 4.63 A apart

Module area 3.106 m² 2.583 m² 0.523 m² apart

Current at max power 17.76 A 13.32 A 4.44 A apart

Cell count 132 144 12 cells apart

Bifacial Yes No Yes vs No

Dimensions 2384x1303x33 mm 2278x1134x30 mm 2384x1303x33 mm vs 2278x1134x30 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

HN21N-66HT750W

25,164 kWh

HN18-72H570W

19,125 kWh

Lifetime gap

6,039 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario HN21N-66HT750W HN18-72H570W

Standard test conditions 25 °C 100.0% of rated power 750 W 570 W

Cool, bright day 40 °C 95.3% of rated power 719 W 543 W

Typical summer roof 55 °C 90.7% of rated power 687 W 517 W

Hot roof 70 °C 86.0% of rated power 656 W 490 W

Full specification

Parameter HN21N-66HT750W HN18-72H570W Difference

Power and efficiency

Rated power 750 Wp 570 Wp +180 W for HN21N-66HT750W

Module efficiency 24.10 % 22.07 % +2.03 pp for HN21N-66HT750W

Power density 241.4 Wp/m² 220.7 Wp/m² +20.8 Wp/m² for HN21N-66HT750W

Open-circuit voltage 50.20 V 51.00 V Effectively the same

Voltage at max power 42.24 V 42.80 V Effectively the same

Short-circuit current 18.74 A 14.11 A 4.63 A apart

Current at max power 17.76 A 13.32 A 4.44 A apart

Temperature

Temperature coefficient -0.280 %/°C -0.310 %/°C +0.030 %/°C for HN21N-66HT750W

Mechanical

Dimensions 2384x1303x33 mm 2278x1134x30 mm 2384x1303x33 mm vs 2278x1134x30 mm

Module area 3.106 m² 2.583 m² 0.523 m² apart

Weight 37.4 kg 28.5 kg -8.9 kg for HN18-72H570W

Weight per kWp 49.9 kg/kWp 50.0 kg/kWp Effectively the same

Warranty and degradation

Product warranty 15 yrs 12 yrs +3 yrs for HN21N-66HT750W

Performance warranty 30 yrs 25 yrs +5 yrs for HN21N-66HT750W

Annual degradation 0.40 %/yr 0.40 %/yr Same

Technology

Cell technology TOPCon TOPCon Same

Cell type Monocrystalline Monocrystalline Same

Cell count 132 144 12 cells apart

Bifacial Yes No Yes vs No

Against the whole database

14,129 panels

Efficiency

#241 vs #6,199

HN21N-66HT750W leads by 5,958 places

Power density

#241 vs #6,121

HN21N-66HT750W leads by 5,880 places

Heat behaviour

#1,347 vs #8,069

HN21N-66HT750W leads by 6,722 places

Weight

#3,263 vs #3,592

HN21N-66HT750W leads by 329 places

Warranty

#21 vs #9,912

HN21N-66HT750W leads by 9,891 places

Overall

#73 vs #6,348

HN21N-66HT750W leads by 6,275 places

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Written summary

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Questions about this pairing

Which panel is better: Hanersun HN21N-66HT750W or Hanersun HN18-72H570W?

According to our database: Hanersun HN21N-66HT750 W has higher module efficiency (24.10% vs 22.07%); Hanersun HN21N-66HT750 W tolerates heat better (temp coeff -0.280%/°C vs -0.310%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Hanersun HN21N-66HT750W and Hanersun HN18-72H570W?

Hanersun HN21N-66HT750 W has a module efficiency of 24.10%, while Hanersun HN18-72H570 W is 22.07%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Hanersun HN21N-66HT750W use vs Hanersun HN18-72H570W?

Hanersun HN21N-66HT750 W uses TOPCon cells; Hanersun HN18-72H570 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 Hanersun HN21N-66HT750W and Hanersun HN18-72H570W?

Hanersun HN21N-66HT750 W has a 30 years power warranty; Hanersun HN18-72H570 W 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.

Are Hanersun HN21N-66HT750W and Hanersun HN18-72H570W bifacial panels?

Hanersun HN21N-66HT750 W is bifacial (captures light from both faces); Hanersun HN18-72H570 W is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Shop prices: See 14 Hanersun 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.