580 vs 570 16 of 19 identical Swap Change panels

BYD NLBK-36 580 vs BYD NLBK-36 570

Q: Which panel is better: BYD NLBK-36 580 or BYD NLBK-36 570?

According to our database: BYD NLBK-36 580 has higher module efficiency (22.45% vs 22.07%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of BYD NLBK-36 580 and BYD NLBK-36 570?

BYD NLBK-36 580 has a module efficiency of 22.45%, while BYD NLBK-36 570 is 22.07%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does BYD NLBK-36 580 use vs BYD NLBK-36 570?

BYD NLBK-36 580 uses TOPCon cells; BYD NLBK-36 570 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 BYD NLBK-36 580 and BYD NLBK-36 570?

BYD NLBK-36 580 has a 30 years power warranty; BYD NLBK-36 570 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.

Q: Are BYD NLBK-36 580 and BYD NLBK-36 570 bifacial panels?

Both BYD NLBK-36 580 and BYD NLBK-36 570 are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

BYD

NLBK-36 580

580 Wp 22.45 % TOPCon Bifacial

Open panel page Datasheet PDF

BYD

NLBK-36 570

570 Wp 22.07 % TOPCon Bifacial

Open panel page Datasheet PDF

The verdict

580 leads on the differences that matter

The largest is module efficiency: 0.38 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences

How alike are they

16 of 19 comparable
parameters are identical

identical differs

What actually differs

3 of 19 parameters

Parameter 580 570 Difference

Module efficiency 22.45 % 22.07 % 0.38 pp more efficient

Power density 224.5 Wp/m² 220.7 Wp/m² 3.9 Wp/m² higher

Rated power 580 Wp 570 Wp 10 W more power

What it means on a roof

Thirty years of production

Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, at 1,200 kWh/kWp a year

Cell temperature

Same temp coeff. for both panels (-0.278 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.

580

19,460 kWh

570

19,125 kWh

Lifetime gap

335 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 580 570

Standard test conditions 25 °C 100.0% of rated power 580 W 570 W

Cool, bright day 40 °C 95.8% of rated power 556 W 546 W

Typical summer roof 55 °C 91.7% of rated power 532 W 522 W

Hot roof 70 °C 87.5% of rated power 507 W 499 W

Full specification

Parameter 580 570 Difference

Power and efficiency

Rated power 580 Wp 570 Wp +10 W for 580

Module efficiency 22.45 % 22.07 % +0.38 pp for 580

Power density 224.5 Wp/m² 220.7 Wp/m² +3.9 Wp/m² for 580

Open-circuit voltage 52.69 V 52.06 V Effectively the same

Voltage at max power 43.18 V 42.80 V Effectively the same

Short-circuit current 13.86 A 13.74 A Effectively the same

Current at max power 13.43 A 13.32 A Effectively the same

Temperature

Temperature coefficient -0.278 %/°C -0.278 %/°C Same

Mechanical

Dimensions 2278x1134x30 mm 2278x1134x30 mm Same

Module area 2.583 m² 2.583 m² Same

Weight 32.0 kg 32.0 kg Same

Weight per kWp 55.2 kg/kWp 56.1 kg/kWp Effectively the same

Warranty and degradation

Product warranty 12 yrs 12 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 144 144 Same

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#4,620 vs #6,136

580 leads by 1,516 places

Power density

#4,547 vs #6,058

580 leads by 1,511 places

Heat behaviour

#1,295 vs #1,295

Tied - the same position in the database

Weight

#9,588 vs #10,413

580 leads by 825 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#4,564 vs #5,309

580 leads by 745 places

More useful comparisons

Open the full database

Same series, other bin

BYD

BYD NLBK-36 580 vs BYD NLBK-36 600

5 differences, the largest is module efficiency

Same series, other bin

BYD

BYD NLBK-36 580 vs BYD NLBK-36 595

5 differences, the largest is module efficiency

Same series, other bin

BYD

BYD NLBK-36 580 vs BYD NLBK-36 590

5 differences, the largest is module efficiency

Same series, other bin

BYD

BYD NLBK-36 580 vs BYD NLBK-36 585

3 differences, the largest is module efficiency

Same series, other bin

BYD

BYD NLBK-36 580 vs BYD NLBK-36 575

The same specification on paper

Same manufacturer

BYD

BYD NLBK-36 580 vs BYD HSBK-33-735

13 differences, the largest is module efficiency

Written summary

Checking cache...

Questions about this pairing

Which panel is better: BYD NLBK-36 580 or BYD NLBK-36 570?

According to our database: BYD NLBK-36 580 has higher module efficiency (22.45% vs 22.07%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of BYD NLBK-36 580 and BYD NLBK-36 570?

BYD NLBK-36 580 has a module efficiency of 22.45%, while BYD NLBK-36 570 is 22.07%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does BYD NLBK-36 580 use vs BYD NLBK-36 570?

BYD NLBK-36 580 uses TOPCon cells; BYD NLBK-36 570 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 BYD NLBK-36 580 and BYD NLBK-36 570?

BYD NLBK-36 580 has a 30 years power warranty; BYD NLBK-36 570 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.

Are BYD NLBK-36 580 and BYD NLBK-36 570 bifacial panels?

Both BYD NLBK-36 580 and BYD NLBK-36 570 are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

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.