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BYD NLBK-36 585
BYD Brand review

NLBK-36 585

585 Wp TOPCon Bifacial 80%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 4,127 of 14,005
Compare panels Datasheet PDF
Power (Wp)
585
Typical for its class
Efficiency (%)
22.65
Typical · median 22.44%
Density (Wp/m²)
226.5
Typical · median 224.4
Temp (%/°C)
-0.278
Strong · top 1%
Weight (kg)
32.0
Typical · median 31.2 kg
Warranty (yrs)
30
Typical · median 30 yrs

The BYD AURO N NLBK-36 (570-600W) series are modules designed to maximize energy yield from the same surface area - particularly in situations where every square meter of roof space or limited ground space is valuable. A key advantage is the combination of N-type TOPCon cell technology with a bifacial design, which allows for efficient operation even with reflected light and better utilization of site conditions (bright ground, gravel, roof membrane). These modules are characterized by low temperature sensitivity, ensuring stable production even in hot weather, as well as long-term durability and slower degradation - which is a significant advantage for investments planned over decades. Furthermore, a sealed connection box with high IP protection is used, which contributes to reliability in more challenging weather conditions. This is an excellent choice for commercial, industrial, and large residential installations, where high production, durability, and predictable returns are the top priorities.

Ranking

1,017 panels in the segment TOPCon 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.65% 22.44% Typical 3,522
Power density 226.5 224.4 Typical 3,500
Temperature coefficient -0.278 -0.290 Strong · top 1% 1,295
Weight per kWp 54.7 53.8 Typical 9,081
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 1 caution
Best for

Residential, commercial, utility-scale and hot-climate.

Strengths
-0.278 %/°C temperature coefficient

Top 1% of the TOPCon 550-600 W segment, against a median of -0.290. Ranked 1,295th in the whole database.

What owners get
Up to 23.23% Efficiency – Top of the Segment

The best variants in the series achieve 23.23% efficiency, placing them on par with the Lexron 144 CELL HALFCUT TOPCon (23.23%) and Tongwei TWMND N-type (23.2%), and significantly above the Talesun BISTAR TP7F78M (21.5%). This translates into meaningfully higher energy yield from the same installation footprint.

N-type TOPCon: Low Temperature Coefficient and Minimal Degradation

The temperature coefficient of Pmax is -0.30%/°C, which is more favorable than the typical -0.35%/°C for PERC modules. The guaranteed annual degradation does not exceed 0.4%, ensuring the module retains at least 87.4% of its nominal power after 30 years — a value confirmed in the official BYD AURO N datasheet.

~80% Bifaciality – Extra Kilowatt-Hours at No Added Cost

The bifacial design with up to 80% bifaciality enables energy harvest from reflected irradiance off the ground surface (gravel, light-colored membrane, concrete), increasing annual yield by 5–15% depending on installation conditions. The benefit is especially significant in ground-mounted and rooftop systems with high-albedo surfaces.

30-Year Linear Power Warranty

BYD offers a 30-year linear power warranty (>87.4% after 30 years), while many manufacturers in this price segment cap their coverage at 25 years. This is a meaningful advantage in LCOE calculations for commercial and industrial projects planned across a full three-decade operational life.

BNEF Tier 1 – Bankability Since 1995

BYD is listed on the BNEF Tier 1 PV Module Manufacturers ranking (confirmed Q1 2026), meaning banks and infrastructure funds recognize the manufacturer as financially credible. This facilitates project finance and reduces counterparty risk on large-scale installations.

Trade-offs
Product Warranty Limited to 12 Years

The standard workmanship and materials warranty is 12 years, whereas JA Solar, Jinko Solar, and Trina Solar offer 25-year product warranties in comparable product classes. For installations with a planned service life of 25–30 years, this means that manufacturing defects detected after year 12 will not be covered under the manufacturer's warranty.

Notes from the database
  • Efficiency of 22.6% matches the TOPCon 550-600W median
  • At 226.5 W/m² power density, roof space requirements are typical for TOPCon 550-600W panels
  • At -0.28%/°C, hot weather performance is typical for TOPCon 550-600W panels
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof
  • #3522 for efficiency, #1295 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 585 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.65 % Typical Segment median 22.44%
Vmpp · Impp 44.90 V · 13.03 A Operating point at max power
Voc · Isc 53.82 V · 13.49 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2278×1134×30 mm · 2.58 m² of roof
Weight 32.0 kg Typical Typical · median 31.2 kg
Cells 144 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.278 %/°C Strong top 1% of its segment
Coefficient Voc · Isc -0.239 · 0.044 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 511 W guaranteed
Degradation 0.40 % Per year after the first

Datasheet charts

Open datasheet PDF

Measured curves published by BYD in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 585 Wp appear here. The rest cover the whole series.

30-Year Linear Power Warranty vs Industry Standard 30-Year Linear Power Warranty vs Industry Standard Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-
With bifacial gain
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.278 %/°C against a segment median of -0.290
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Alternatives

All BYD panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
BYD NLBK-36 585 585 W 22.65% -0.278 32.0 kg You are here
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg -25 W, lighter, +2.2 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg -30 W, lighter, +2.0 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +50 W, lighter, +2.0 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +45 W, cooler, +1.8 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg -35 W, 16 kg lighter, +1.8 pp
NLBK-24-380 380 W 14.71% -0.300 30.0 kg -205 W, hotter, -7.9 pp
NLBK-24-385 385 W 14.90% -0.300 30.0 kg -200 W, hotter, -7.7 pp
NLBK-24-390 390 W 15.10% -0.300 30.0 kg -195 W, hotter, -7.5 pp
NLBK-24-395 395 W 15.29% -0.300 30.0 kg -190 W, hotter, -7.4 pp
NLBK-24-400 400 W 15.48% -0.300 30.0 kg -185 W, hotter, -7.2 pp
MLTK-36 530W 530 W 20.52% -0.332 27.0 kg -55 W, hotter, -2.1 pp
MLTK-36 535W 535 W 20.71% -0.332 27.0 kg -50 W, hotter, -1.9 pp
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +65 W, lighter, +2.6 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +60 W, lighter, +2.4 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +55 W, lighter, +2.2 pp

Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2547 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What does TOPCon technology mean in the BYD AURO N NLBK-36 panels, and does it make a practical difference?
TOPCon (Tunnel Oxide Passivated Contact) is an n-type cell technology that reduces electron recombination losses within the silicon substrate. In practice, this translates to higher module efficiency (up to 21.5%) for the same footprint and a slower rate of power degradation over time. For the system owner, this means more kilowatt-hours delivered across the full service life — a difference that becomes especially apparent when compared with older-generation PERC cells.
What warranty does BYD offer on the AURO N NLBK-36 series?
BYD provides a 12-year product warranty covering defects in materials and workmanship, along with a 30-year linear power output warranty. The power warranty guarantees that after 30 years of operation the module will retain the minimum percentage of its nominal power as specified in the datasheet. This is one of the longer warranty standards in the industry — a significant factor when calculating return on investment over multi-decade time horizons.
Do the BYD AURO N NLBK-36 panels lose a significant amount of power on hot days?
The AURO N NLBK-36 series features a power temperature coefficient of approximately -0.30%/°C, which is better than that of typical PERC modules (around -0.34 to -0.36%/°C). This means that when the module heats up to 70°C — typical during summer on a dark roof — the power loss is noticeably lower. During the hot months when energy production matters most, these modules maintain more stable output.
Which types of installations are best suited to the BYD AURO N NLBK-36 570–600 W series?
This series is primarily suited to commercial, industrial, and large residential installations where maximizing energy yield from a limited surface area is critical. With peak power reaching 600 Wp and bifacial capability — harvesting light reflected from a bright ground surface — it is also attractive for ground-mounted systems over light-colored gravel or white membranes. It is not the typical choice for small rooftops with significant shading.
What benefit does bifaciality provide in the BYD AURO N NLBK-36 panels, and when can it be relied upon?
Bifaciality means that the rear side of the panel also converts light reflected from the ground or surrounding surfaces. The production gain can range from a few percent up to 20–25% under favorable conditions: white gravel, a light-colored roofing membrane, or ground-mounted installations with clearance beneath the modules. On a dark roof with no rear-side light access, the effect is minimal. BYD specifies a bifaciality factor of up to approximately 80% of the front-side power rating.
Is BYD a reliable manufacturer, and should I be concerned about warranty service availability in ten or more years?
BYD (Build Your Dreams) is a Chinese manufacturer rated Tier 1 by Bloomberg NEF, indicating financial stability and an established position in the global market. The company is one of the world's largest producers of batteries and PV modules, with an extensive distributor network across Europe. The risk of the brand disappearing is considerably lower than with smaller manufacturers; however, as with any non-EU producer, it is worth paying attention to the local entity backing the warranty.
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