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Sunova TS-BW66(490)
Sunova Brand review

TS-BW66(490)

490 Wp PERC Bifacial 70%
ComparePV verdict

Strong in heat, modest efficiency

Rank 10,032 of 14,005
Compare panels Datasheet PDF
Power (Wp)
490
Strong · top 15%
Efficiency (%)
20.60
Weak · bottom 24%
Density (Wp/m²)
206.4
Typical · median 208.5
Temp (%/°C)
-0.330
Strong · top 8%
Weight (kg)
25.3
Typical · median 24.5 kg
Warranty (yrs)
25
Typical · median 25 yrs

The Sunova TS-BW66 series is designed for high energy production where every square meter of roof or ground space counts. The use of a bifacial construction allows not only for the use of direct sunlight, but also of reflected radiation from the ground, which significantly improves performance compared to typical monofacial modules. In practice, TS-BW66 performs well in installations where occasional dirt and less ideal operating conditions occur - this is supported by PERC technology, which is designed to better capture light and operate more stably in low-light conditions.

This is a good choice for investors who want to combine high power density with sensible profitability: on the roofs of warehouses and service buildings, in PV farms, and in projects where the back of the module can be "illuminated" (clear ground, proper mounting). The series also features a robust glass-to-glass construction, which increases resistance to moisture and material fatigue, which is important in the Polish climate. This makes TS-BW66 a reasonable alternative to more expensive N-type solutions when durability and performance are the priority, rather than just specifications on paper.

Ranking

449 panels in the segment PERC 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.60% 20.82% Weak · bottom 24% 11,093
Power density 206.4 208.5 Typical 11,027
Temperature coefficient -0.330 -0.350 Strong · top 8% 8,545
Weight per kWp 51.6 53.1 Typical 5,001
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

1 positive · 1 caution
Best for

Commercial.

Not ideal for

Tight roof space.

Strengths
-0.330 %/°C temperature coefficient

Top 8% of the PERC 450-500 W segment, against a median of -0.350. Ranked 8,545th in the whole database.

Watch-outs
20.60% module efficiency

Bottom 24% of the PERC 450-500 W segment, against a median of 20.82%.

Notes from the database
  • At 20.6% efficiency, this panel is on par with typical PERC 450-500W modules
  • At 206.3 W/m² power density, roof space requirements are typical for PERC 450-500W panels
  • At -0.33%/°C, hot weather performance is typical for PERC 450-500W panels
  • 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces
  • Ranked #11093 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 490 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.60 % Weak Segment median 20.82%
Vmpp · Impp 37.27 V · 13.15 A Operating point at max power
Voc · Isc 45.25 V · 13.71 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 Typical Typical · median 24.5 kg
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 Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 402 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-BW66(490) 490 W 20.60% -0.330 25.3 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg Cooler, +4.4 pp, +5 yr warranty
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, +4.2 pp, +5 yr warranty
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg Cooler, +4.1 pp, +5 yr warranty
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, +3.9 pp, +5 yr warranty
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg Cooler, +3.9 pp, +5 yr warranty
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg Cooler, +3.9 pp, +5 yr warranty
RS480~500S8-132GA-480 480 W 20.20% -0.353 29.5 kg Hotter, heavier, +5 yr warranty
RS480~500S8-132GA-485 485 W 20.40% -0.353 29.5 kg Hotter, heavier, +5 yr warranty
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 +100 W, +3.2 pp, +5 yr warranty
GKA120N-PRO-585W 585 W 23.62% -0.300 26.7 kg +95 W, +3.0 pp, +5 yr warranty
BGO 580 580 W 23.50% -0.290 26.0 kg +90 W, +2.9 pp, +5 yr warranty
GKA120N-PRO-580W 580 W 23.42% -0.300 26.7 kg +90 W, +2.8 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-BW66 series still available for purchase?
Production of the TS-BW66 series has been discontinued by the manufacturer and the module is no longer actively manufactured. Units can still be found in distributor stock or clearance offers, but for larger projects it's worth confirming availability with the seller in advance and considering currently produced equivalents within the same series.
How does bifacial technology in the TS-BW66 differ from standard panels?
The TS-BW66 has active cells on both sides, so besides direct sunlight it also captures light reflected off the ground or surrounding surface. This means that with a bright ground surface, a white roof membrane, or ground-mounted installations, energy yield can be higher than with a comparable-rated monofacial module.
What warranty comes with the Sunova TS-BW66 panels?
The manufacturer provides a 15-year product warranty covering material and workmanship defects, plus a 25-year power performance warranty. This is a standard level for PERC panels in this segment, though shorter than what's now offered on the newest N-type modules, where warranties can reach up to 30 years.
Do TS-BW66 panels perform well under partial soiling or shading?
The PERC cell technology used in the TS-BW66 improves light capture and keeps output more stable under weaker irradiance, which helps with periodic soiling, dust, or grime. It doesn't eliminate the effects of persistent partial shading, though, so roofs with chimneys or dormers still need careful string layout planning.
What is the maximum power output of the TS-BW66, and what installations suit it best?
The module reaches up to 510 Wp, and combined with its bifacial, glass-glass construction it's well suited to rooftops on commercial and industrial buildings, as well as PV farms where high power density per square meter matters. It performs especially well where the rear side of the panel can receive reflected light.
Does the glass-glass construction in the TS-BW66 improve durability in a temperate climate?
Yes, glass-glass construction instead of a typical backsheet laminate increases resistance to moisture ingress, UV degradation, and material fatigue under temperature swings. In climates with frequent freeze-thaw cycles, this translates into longer service life and more stable output throughout the warranty period.
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