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BYD NSBK-33-690
BYD Brand review

NSBK-33-690

690 Wp TOPCon Bifacial 80%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 1,523 of 14,005
Compare panels Datasheet PDF
Power (Wp)
690
Strong · top 21%
Efficiency (%)
22.22
Typical · median 22.40%
Density (Wp/m²)
222.1
Typical · median 223.7
Temp (%/°C)
-0.278
Strong · top 15%
Weight (kg)
38.3
Typical · median 34.6 kg
Warranty (yrs)
30
Typical · median 30 yrs

The BYD AURO N NSBK-33 photovoltaic panel series sets new performance standards thanks to the use of advanced N-type cells in TOPCon technology. These premium-class modules have been designed to maximize yields in demanding lighting conditions, making them an ideal choice for the often cloudy Polish sky. A key differentiator of the series is the Pure Black aesthetics, combining an elegant, uniform look with high power density, allowing for the creation of a modern and prestigious installation on a residential roof or a large commercial facility. Thanks to zero LID degradation (Light Induced Degradation) technology, investors can forget about a sudden drop in efficiency in the initial phase of operation, enjoying stable electricity production for decades. The use of SMBB solutions and half-cut construction significantly reduces resistive losses, and the low temperature coefficient of power guarantees higher efficiency even during summer heat. This product is aimed at those looking for the lowest cost of energy (LCOE) and uncompromising reliability, backed by a 30-year linear power output warranty. These modules solve the problem of limited installation space, offering record efficiency while maintaining high mechanical resistance to snow and wind. This is a solution that stands out from the competition with a unique combination of technical innovation and minimalist design.

Ranking

249 panels in the segment TOPCon 650-700 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.22% 22.40% Typical 5,753
Power density 222.1 223.7 Typical 5,734
Temperature coefficient -0.278 -0.290 Strong · top 15% 1,295
Weight per kWp 55.5 53.2 Typical 9,882
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, shaded-installations and hot-climate.

Strengths
-0.278 %/°C temperature coefficient

Top 15% of the TOPCon 650-700 W segment, against a median of -0.290.

What owners get
N-type TOPCon with Zero LID

N-type cells eliminate Light-Induced Degradation (LID) present in legacy PERC technology, meaning there is no initial power drop during the first weeks of operation. A power temperature coefficient of -0.30%/°C places this series at the top of its segment and translates into measurably higher annual energy yield in Poland's variable-irradiance climate.

Up to 23.19% Efficiency — on Par with Segment Leaders

The maximum module efficiency of 23.19% at 720 Wp is virtually identical to direct competitors: Gamko GKA210N132 (23.18%), Renesola RS9-700~720NBG-E1 (23.18%), and DMEGC DMxxxG12T-B66HSW (23.20%). The series matches its peers in power density, which is critical when rooftop area is constrained.

Bifacial Construction with >80% Bifaciality Factor

The bifacial module with a declared bifaciality factor above 80% enables additional energy harvest from reflected irradiance. On installations with high-albedo surfaces (white membrane, gravel, snow), this translates into a 5–15% increase in annual energy yield compared to monofacial modules of the same rated power.

30-Year Linear Warranty with <0.4%/Year Degradation

BYD AURO N guarantees annual power loss below 0.4%, whereas standard PERC/P-type modules in this price segment typically specify 0.55–0.70% per year. Over a 30-year operating horizon, this difference amounts to several additional percentage points of retained power output, directly reducing the system's LCOE.

BYD — Tier 1 Manufacturer with Full Corporate Backing

BYD (founded 1995) is classified by BloombergNEF as a Tier 1 (bankable) manufacturer, a prerequisite for project financing by lending institutions. Membership in the BYD Group — one of the world's largest industrial conglomerates — minimizes the risk of warranty service unavailability over a 30-year operating horizon, in contrast to smaller Tier 2 and Tier 3 manufacturers.

Trade-offs
Product Warranty Limited to 12 Years

BYD provides a 12-year product warranty against manufacturing defects, whereas Jinko Solar, JA Solar, Trina Solar, and most other Tier 1 manufacturers in the equivalent price segment standardly offer 25 years. Modules with a 30-year service life are therefore covered against factory defects for only the first 40% of their operational period — a tangible risk factor for institutional investors and residential prosumers seeking comprehensive coverage.

Notes from the database
  • At 22.2% efficiency, this panel is on par with typical TOPCon 650-700W modules
  • Power density of 222.1 W/m² matches the TOPCon 650-700W median
  • Temperature coefficient of -0.28%/°C matches the TOPCon 650-700W median
  • At 38.3 kg, this panel is 3.7 kg heavier than the TOPCon 650-700W median (34.6 kg) - more demanding for installation crews
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 690 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.22 % Typical Segment median 22.40%
Vmpp · Impp 40.28 V · 17.13 A Operating point at max power
Voc · Isc 48.12 V · 18.08 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2384×1303×33 mm · 3.11 m² of roof
Weight 38.3 kg Typical Typical · median 34.6 kg
Cells 132 · TOPCon Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.278 %/°C Strong top 15% 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 603 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

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 NSBK-33-690 690 W 22.22% -0.278 38.3 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg -40 W, lighter, +3.0 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg Cooler, lighter, +3.0 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg Cooler, lighter, +2.8 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg -45 W, lighter, +2.8 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg Cooler, lighter, +2.8 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg Cooler, lighter, +2.7 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg -20 W, lighter, +2.6 pp
MSBK-33 645 645 W 20.76% -0.328 38.7 kg -45 W, hotter, -1.5 pp
MSBK-33 650 650 W 20.92% -0.328 38.7 kg -40 W, hotter, -1.3 pp
MSTK-33 655 655 W 21.10% -0.328 33.9 kg Hotter, -1.1 pp, -5 yr warranty
MSTK-33 660 660 W 21.26% -0.328 33.9 kg Hotter, -1.0 pp, -5 yr warranty
MSBK-33 665 665 W 21.41% -0.328 38.7 kg -25 W, hotter, -0.8 pp
MSBK-33 670 670 W 21.57% -0.328 38.7 kg -20 W, hotter, -0.6 pp
AIKO-A805-GRH78Dw 805 W 25.10% -0.260 39.8 kg +115 W, cooler, +2.9 pp
AIKO-A800-GRH78Dw 800 W 24.90% -0.260 39.8 kg +110 W, cooler, +2.7 pp
AIKO-A795-GRH78Dw 795 W 24.80% -0.260 39.8 kg +105 W, cooler, +2.6 pp

Found 1390 panels of the same or similar size to this one, within ±10 mm. See them here Found 1400 panels of the same or similar size to this one, within ±25 mm. See them here Found 1400 panels of the same or similar size to this one, within ±50 mm. See them here Found 1432 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What warranty does the BYD AURO N NSBK-33 series carry, and what exactly does it cover?
The BYD AURO N NSBK-33 series comes with a 12-year product warranty covering defects in workmanship and materials, along with a 30-year linear power output warranty. This means the manufacturer guarantees a defined performance level throughout three full decades of operation, with an annual degradation rate below 0.7%. As a Tier 1 manufacturer with a global service network, BYD provides genuine assurance that warranty claims can be enforced effectively.
What is TOPCon technology, and why should it be chosen for the AURO N NSBK-33 series over a less expensive PERC module?
TOPCon (Tunnel Oxide Passivated Contact) is an N-type cell architecture featuring an additional silicon oxide passivation layer that minimizes charge-carrier recombination. In practice, this translates to module efficiency of approximately 23.2%, compared to roughly 21–22% for PERC, zero light-induced degradation (LID) at the start of operation, and a lower temperature coefficient of around −0.30%/°C. Over a 30-year service life, the cumulative energy yield difference between TOPCon and PERC is substantial, which justifies the higher upfront purchase cost.
Do bifacial BYD AURO N NSBK-33 panels make sense on a residential pitched roof?
Yes, although the bifacial gain is greatest in ground-mount or flat-roof installations with a highly reflective surface beneath. On a pitched roof, the rear side of the NSBK-33 still captures diffuse irradiance reflected from roof tiles or underlayment membranes, which can contribute an additional 3–8% energy yield. With a bifaciality factor above 80%, even where rear-side irradiance is limited, the investment remains cost-effective compared to monofacial panels at the same price point.
Do the 720 Wp BYD AURO N NSBK-33 panels perform well under Polish conditions, where overcast skies are common?
Yes. N-type TOPCon cells exhibit superior spectral response under low-irradiance conditions compared to conventional P-type cells. The half-cut cell design combined with SMBB (Super Multi-Busbar) technology reduces mismatch losses under partial shading, which is typical on Polish rooftops. The high nominal power of 720 Wp, paired with a low temperature coefficient, also means the NSBK-33 performs particularly well in winter, when cell temperature is close to STC conditions, rather than suffering output losses from overheating during summer.
How does the Pure Black version of the BYD AURO N NSBK-33 series differ from the standard white-frame version?
The Pure Black variant (denoted by the BK suffix in the model designation NSBK-33) features a black anodized aluminum frame and a black backsheet or dark glass, giving the entire module a uniform, aesthetically refined appearance. This option is especially popular on single-family residential rooftops and in architectural projects where the visual integration of the PV system is a priority. The electrical specifications and warranty terms are identical to those of the standard version, so the choice is purely aesthetic with no compromise in performance.
Will the 720 W BYD AURO N NSBK-33 panel be compatible with a typical residential inverter, and what are its physical dimensions?
A 720 Wp module requires an inverter capable of handling higher input voltages and currents than those designed for 400–450 Wp panels, so the inverter's maximum MPP input current must be verified before purchase. According to available data, the NSBK-33 series uses G12 (210 mm) wafer-format cells and has typical physical dimensions of approximately 2,384 × 1,303 mm. The higher per-panel power output reduces the total number of modules needed to reach a given system size, which simplifies DC wiring and lowers balance-of-system (BoS) installation costs compared to lower-wattage panels.
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