Sunova Brand review

TS-BB66(505)

505 Wp PERC Bifacial 70%

63 of 100

ComparePV verdict

Space saver, short guarantee

Rank 9,017 of 14,005

Compare panels Datasheet PDF

Power (Wp)

505

Weak · bottom 11%

Efficiency (%)

21.27

Strong · top 7%

Density (Wp/m²)

212.7

Strong · top 6%

Temp (%/°C)

-0.330

Strong · top 8%

Weight (kg)

25.3

Strong · 3.1 kg below median

Warranty (yrs)

Weak · bottom 23%

The Sunova TS-BB66 All Black series are bifacial modules in a black-on-black style, designed to combine high energy production with an elegant rooftop appearance. Thanks to the bifacial design, the panel can also utilize reflected light from the ground, which significantly improves energy yield in situations where every additional kilowatt-hour counts - on bright, flat roofs, ground-mounted structures, or carports.

The use of half-cut cells reduces losses under partial shading and improves performance in less ideal conditions, such as around chimneys, skylights, or in roofs with more complex geometries. Furthermore, the bifacial PERC technology supports stable module operation over a wide range of solar irradiance.

This is a proposal for investors who want both aesthetics and functionality - from single-family homes to commercial buildings. The TS-BB66 stands out from the competition with its all-black bifacial version, which offers a rare combination of design and additional energy generation.

Ranking

706 panels in the segment PERC 500-550 W

Metric This panel Median Position in segment Overall rank

Module efficiency 21.27% 20.90% Strong · top 7% 8,849

Power density 212.7 209.0 Strong · top 6% 8,757

Temperature coefficient -0.330 -0.350 Strong · top 8% 8,545

Weight per kWp 50.1 53.0 Strong · top 18% 3,601

Performance warranty 25 yrs 30 yrs Weak · bottom 23% 9,798

Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 1 caution

Best for

Residential, commercial and shaded-installations.

Not ideal for

Owners who want a long output guarantee.

Strengths

212.7 watts per square metre

Top 6% of the PERC 500-550 W segment, against a median of 209.0. Ranked 8,757th in the whole database.

21.27% module efficiency

Top 7% of the PERC 500-550 W segment, against a median of 20.90%. Ranked 8,849th in the whole database.

-0.330 %/°C temperature coefficient

Top 8% of the PERC 500-550 W segment, against a median of -0.350. Ranked 8,545th in the whole database.

Watch-outs

25 year performance warranty

Bottom 23% of the PERC 500-550 W segment, against a median of 30 yrs.

Notes from the database

Efficiency of 21.3% matches the PERC 500-550W median
212.7 W/m² power density - 3.7 W/m² more than PERC 500-550W median (209.0 W/m²), more power per roof area
Temperature coefficient of -0.33%/°C matches the PERC 500-550W median
At 25.3 kg, this panel is 3.1 kg lighter than PERC 500-550W median (28.4 kg) - easier handling during installation
70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces

Specifications

Open datasheet PDF

Nominal power (Pmax) 505 Wp Nameplate at 1000 W/m², 25 °C

Module efficiency 21.27 % Strong Segment median 20.90%

Vmpp · Impp 37.53 V · 13.46 A Operating point at max power

Voc · Isc 45.54 V · 13.95 A Sizes the string length

Max system voltage 1500 V Longer strings than 1000 V modules

Dimensions 2094×1134×35 mm · 2.37 m² of roof

Weight 25.3 kg Strong Strong · 3.1 kg below median

Cells 132 · PERC Monocrystalline

Bifaciality 70 % Rear output as a share of front

Coefficient Pmax -0.330 %/°C Strong top 8% of its segment

Coefficient Voc · Isc -0.260 · 0.060 %/°C

NOCT 45 °C At 800 W/m², 20 °C ambient

Product warranty 15 years Hardware defects only

Performance warranty 25 years Weak bottom 23% · median 30 yrs

End-of-warranty output 84.8 % Equals 414 W guaranteed

Degradation 2.00 → 0.55 % 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

Irradiance Energy price Price inflation 0%/yr

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

Heat losses

-0.330 %/°C against a segment median of -0.350

Try your own cell temperature (°C) 60° · - · -

Bifacial gain

Rear gain over light concrete: -

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

Alternatives

All Sunova panels

Filter these Similar power Same cell type Same manufacturer

Size Any ±10 mm ±25 mm ±50 mm ±100 mm

Panel Power Eff. Temp. Weight Difference

Sunova TS-BB66(505) 505 W 21.27% -0.330 25.3 kg You are here

LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, +3.7 pp, +5 yr warranty

AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, +3.5 pp, +5 yr warranty

LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, +3.4 pp, +5 yr warranty

LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +50 W, cooler, +3.3 pp

AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, +3.2 pp, +5 yr warranty

LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, +3.2 pp, +5 yr warranty

RS480~500S8-132GA-480 480 W 20.20% -0.353 29.5 kg Heavier, -1.1 pp, +5 yr warranty

RS480~500S8-132GA-485 485 W 20.40% -0.353 29.5 kg Heavier, -0.9 pp, +5 yr warranty

TS-BB66(490) 490 W 20.64% -0.330 25.3 kg -15 W, -0.6 pp

TS-BB66(495) 495 W 20.85% -0.330 25.3 kg -10 W, -0.4 pp

GKA120N-PRO-590W 590 W 23.82% -0.300 26.7 kg +85 W, +2.6 pp, +5 yr warranty

GKA120N-PRO-585W 585 W 23.62% -0.300 26.7 kg +80 W, +2.4 pp, +5 yr warranty

BGO 580 580 W 23.50% -0.290 26.0 kg +75 W, +2.2 pp, +5 yr warranty

GKA120N-PRO-580W 580 W 23.42% -0.300 26.7 kg +75 W, +2.2 pp, +5 yr warranty

Found 397 panels of the same or similar size to this one, within ±10 mm. See them here Found 408 panels of the same or similar size to this one, within ±25 mm. See them here Found 425 panels of the same or similar size to this one, within ±50 mm. See them here Found 953 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered

Is the Sunova TS-BB66 All Black series still available for purchase?

The TS-BB66 All Black series has been discontinued by Sunova. Remaining warehouse stock may still be available through distributors, but the manufacturer has no plans to resume production. For larger installations, it's worth confirming upfront that enough panels from the same production batch are available to avoid mismatches in appearance and performance.

What's the difference between the bifacial TS-BB66 All Black and a standard monofacial panel?

Thanks to its dual-sided design, the TS-BB66 captures direct sunlight on the front and reflected irradiance on the rear, off the surface beneath the panel. This extra yield is most noticeable on light-colored flat roofs, ground-mount structures, and carports with sufficient clearance and ground albedo. On a typical dark pitched roof, the bifacial gain is much smaller than in ground-mount installations.

What is the maximum power output of the Sunova TS-BB66 All Black module?

Modules in the TS-BB66 All Black series reach up to 505 Wp. This is typical for modern half-cut PERC panels, offering a solid power-to-area ratio while keeping the uniform all-black aesthetic.

What warranty comes with the Sunova TS-BB66 All Black panels?

The manufacturer provides a 15-year product warranty and a 25-year power performance warranty. Since the series has been discontinued and Sunova is a China-based non-Tier-1 manufacturer, it's worth checking with your local distributor who actually handles warranty claims and for how long this will remain possible.

Do half-cut cells in the TS-BB66 All Black really help with partial shading?

Yes, splitting cells into halves reduces power loss when only part of the panel is shaded, for example by a chimney, dormer, or neighboring structure. Current in the shaded half-cell drops independently of the rest of the module, so the whole panel loses less power than it would with traditional full-size cells.

Are the TS-BB66 All Black panels suitable for both residential and commercial installations?

Yes, the series was designed for both use cases. The all-black aesthetic works well on single-family home roofs, while the bifacial design and up to 505 Wp power add value in larger commercial installations, especially on flat roofs or ground-mount structures where the bifacial effect performs best.

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