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Sunova Brand review

TS-BB66(500)

500 Wp PERC Bifacial 70%
ComparePV verdict

Strong in heat, short guarantee

Rank 9,379 of 14,005
Compare panels Datasheet PDF
Power (Wp)
500
Weak · bottom 4%
Efficiency (%)
21.06
Typical · median 20.90%
Density (Wp/m²)
210.6
Typical · median 209.0
Temp (%/°C)
-0.330
Strong · top 8%
Weight (kg)
25.3
Strong · 3.1 kg below median
Warranty (yrs)
25
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 21.06% 20.90% Typical 9,625
Power density 210.6 209.0 Typical 9,583
Temperature coefficient -0.330 -0.350 Strong · top 8% 8,545
Weight per kWp 50.6 53.0 Strong · top 22% 4,019
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

2 positive · 1 caution
Best for

Residential, commercial and shaded-installations.

Not ideal for

Owners who want a long output guarantee.

Strengths
-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.

50.6 kg per kWp

Top 22% of the PERC 500-550 W segment, against a median of 53.0.

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
  • At 21.1% efficiency, this panel is on par with typical PERC 500-550W modules
  • Power density of 210.6 W/m² matches the PERC 500-550W median
  • At -0.33%/°C, hot weather performance is typical for PERC 500-550W panels
  • Weight of 25.3 kg (3.1 kg below PERC 500-550W median of 28.4 kg) allows easier transport and roof mounting
  • 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces

Specifications

Open datasheet PDF
Nominal power (Pmax) 500 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.06 % Typical Segment median 20.90%
Vmpp · Impp 37.41 V · 13.37 A Operating point at max power
Voc · Isc 45.43 V · 13.85 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 410 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
-

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
-
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
Size
Panel Power Eff. Temp. Weight Difference
Sunova TS-BB66(500) 500 W 21.06% -0.330 25.3 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, +3.9 pp, +5 yr warranty
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, +3.7 pp, +5 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, +3.6 pp, +5 yr warranty
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, +3.4 pp, +5 yr warranty
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, +3.4 pp, +5 yr warranty
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg Cooler, +3.4 pp, +5 yr warranty
RS480~500S8-132GA-480 480 W 20.20% -0.353 29.5 kg Heavier, -0.9 pp, +5 yr warranty
RS480~500S8-132GA-485 485 W 20.40% -0.353 29.5 kg Heavier, -0.7 pp, +5 yr warranty
TS-BB66(490) 490 W 20.64% -0.330 25.3 kg -10 W, -0.4 pp
TS-BB66(495) 495 W 20.85% -0.330 25.3 kg -0.2 pp
GKA120N-PRO-590W 590 W 23.82% -0.300 26.7 kg +90 W, +2.8 pp, +5 yr warranty
GKA120N-PRO-585W 585 W 23.62% -0.300 26.7 kg +85 W, +2.6 pp, +5 yr warranty
BGO 580 580 W 23.50% -0.290 26.0 kg +80 W, +2.4 pp, +5 yr warranty
GKA120N-PRO-580W 580 W 23.42% -0.300 26.7 kg +80 W, +2.4 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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