HN21N-66HT745W vs HN18-72H565W 6 of 19 identical Swap Change panels

Hanersun HN21N-66HT745W vs Hanersun HN18-72H565W

Q: Which panel is better: Hanersun HN21N-66HT745W or Hanersun HN18-72H565W?

According to our database: Hanersun HN21N-66HT745W has higher module efficiency (24.00% vs 21.87%); Hanersun HN21N-66HT745W 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-66HT745W and Hanersun HN18-72H565W?

Hanersun HN21N-66HT745W has a module efficiency of 24.00%, while Hanersun HN18-72H565W is 21.87%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Hanersun HN21N-66HT745W use vs Hanersun HN18-72H565W?

Hanersun HN21N-66HT745W uses TOPCon cells; Hanersun HN18-72H565W 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-66HT745W and Hanersun HN18-72H565W?

Hanersun HN21N-66HT745W has a 30 years power warranty; Hanersun HN18-72H565W 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-66HT745W and Hanersun HN18-72H565W bifacial panels?

Hanersun HN21N-66HT745W is bifacial (captures light from both faces); Hanersun HN18-72H565W is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.

Hanersun

HN21N-66HT745W

745 Wp 24.00 % TOPCon Bifacial

Open panel page Datasheet PDF

Hanersun

HN18-72H565W

565 Wp 21.87 % TOPCon

Open panel page Datasheet PDF

The verdict

HN21N-66HT745W leads on the differences that matter

The largest is module efficiency: 2.13 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-66HT745W HN18-72H565W Difference

Module efficiency 24.00 % 21.87 % 2.13 pp more efficient

Rated power 745 Wp 565 Wp 180 W more power

Power density 239.8 Wp/m² 218.7 Wp/m² 21.1 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 18.70 A 14.05 A 4.65 A apart

Module area 3.106 m² 2.583 m² 0.523 m² apart

Current at max power 17.71 A 13.27 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-66HT745W

24,996 kWh

HN18-72H565W

18,957 kWh

Lifetime gap

6,039 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario HN21N-66HT745W HN18-72H565W

Standard test conditions 25 °C 100.0% of rated power 745 W 565 W

Cool, bright day 40 °C 95.3% of rated power 714 W 539 W

Typical summer roof 55 °C 90.7% of rated power 682 W 512 W

Hot roof 70 °C 86.0% of rated power 651 W 486 W

Full specification

Parameter HN21N-66HT745W HN18-72H565W Difference

Power and efficiency

Rated power 745 Wp 565 Wp +180 W for HN21N-66HT745W

Module efficiency 24.00 % 21.87 % +2.13 pp for HN21N-66HT745W

Power density 239.8 Wp/m² 218.7 Wp/m² +21.1 Wp/m² for HN21N-66HT745W

Open-circuit voltage 50.00 V 50.80 V Effectively the same

Voltage at max power 42.08 V 42.60 V Effectively the same

Short-circuit current 18.70 A 14.05 A 4.65 A apart

Current at max power 17.71 A 13.27 A 4.44 A apart

Temperature

Temperature coefficient -0.280 %/°C -0.310 %/°C +0.030 %/°C for HN21N-66HT745W

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 HN18-72H565W

Weight per kWp 50.2 kg/kWp 50.4 kg/kWp Effectively the same

Warranty and degradation

Product warranty 15 yrs 12 yrs +3 yrs for HN21N-66HT745W

Performance warranty 30 yrs 25 yrs +5 yrs for HN21N-66HT745W

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

#329 vs #6,971

HN21N-66HT745W leads by 6,642 places

Power density

#366 vs #6,904

HN21N-66HT745W leads by 6,538 places

Heat behaviour

#1,347 vs #8,069

HN21N-66HT745W leads by 6,722 places

Weight

#3,681 vs #3,830

HN21N-66HT745W leads by 149 places

Warranty

#21 vs #9,912

HN21N-66HT745W leads by 9,891 places

Overall

#98 vs #6,795

HN21N-66HT745W leads by 6,697 places

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Written summary

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Questions about this pairing

Which panel is better: Hanersun HN21N-66HT745W or Hanersun HN18-72H565W?

According to our database: Hanersun HN21N-66HT745 W has higher module efficiency (24.00% vs 21.87%); Hanersun HN21N-66HT745 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-66HT745W and Hanersun HN18-72H565W?

Hanersun HN21N-66HT745 W has a module efficiency of 24.00%, while Hanersun HN18-72H565 W is 21.87%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Hanersun HN21N-66HT745W use vs Hanersun HN18-72H565W?

Hanersun HN21N-66HT745 W uses TOPCon cells; Hanersun HN18-72H565 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-66HT745W and Hanersun HN18-72H565W?

Hanersun HN21N-66HT745 W has a 30 years power warranty; Hanersun HN18-72H565 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-66HT745W and Hanersun HN18-72H565W bifacial panels?

Hanersun HN21N-66HT745 W is bifacial (captures light from both faces); Hanersun HN18-72H565 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.