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Sunova Brand review

TS-BW54(400)-X

400 Wp PERC Bifacial 70%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 10,711 of 14,005
Compare panels Datasheet PDF
Power (Wp)
400
Weak · bottom 9%
Efficiency (%)
20.48
Typical · median 20.60%
Density (Wp/m²)
204.8
Typical · median 206.2
Temp (%/°C)
-0.330
Strong · top 10%
Weight (kg)
21.5
Typical · median 22.0 kg
Warranty (yrs)
25
Typical · median 25 yrs

The Sunova TS-BW54 (X Version) series are modules designed to maximize energy production from the same roof area - thanks to its bifacial design, it also effectively utilizes light reflected from the ground. This solution is particularly effective on bright roofs, roofs with membranes, and surfaces with high albedo, where the gain from the rear side is most noticeable.

The X version has been designed for stable operation in demanding conditions - the module features dual-glass, which better protects against moisture and accelerated material degradation than typical constructions with film. The use of PERC technology and half-cut cells reduces losses and improves the performance of the panels in partial shade, which is often crucial on roofs with dormers, chimneys, or antennas.

It is a good choice for home and commercial installations, where predictability of yields and longer warranty protection are important, without paying extra for "paper" parameters.

Ranking

954 panels in the segment PERC 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.48% 20.60% Typical 11,468
Power density 204.8 206.2 Typical 11,370
Temperature coefficient -0.330 -0.350 Strong · top 10% 8,545
Weight per kWp 53.8 53.0 Typical 7,774
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 · 0 caution
Best for

Residential, commercial and shaded-installations.

Strengths
-0.330 %/°C temperature coefficient

Top 10% of the PERC 400-450 W segment, against a median of -0.350.

Notes from the database
  • At 20.5% efficiency, this panel is on par with typical PERC 400-450W modules
  • At 204.8 W/m² power density, roof space requirements are typical for PERC 400-450W panels
  • Temperature coefficient of -0.33%/°C matches the PERC 400-450W median
  • 70% bifaciality enables rear-side power generation, boosting yield by 4-10% on reflective surfaces
  • In the top 82% for efficiency among all PERC panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 400 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.48 % Typical Segment median 20.60%
Vmpp · Impp 31.42 V · 12.74 A Operating point at max power
Voc · Isc 37.18 V · 13.39 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×35 mm · 1.95 m² of roof
Weight 21.5 kg Typical Typical · median 22.0 kg
Cells 108 · PERC Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.330 %/°C Strong top 10% of its segment
Coefficient Voc · Isc -0.260 · 0.060 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 25 years Typical median 25 yrs · median 25 yrs
End-of-warranty output 84.8 % Equals 328 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-BW54(400)-X 400 W 20.48% -0.330 21.5 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg Cooler, +2.6 pp, +5 yr warranty
JST-EDMH-(445-465)W-TD (450W class) 450 W 23.05% -0.300 20.5 kg +50 W, +2.6 pp, +5 yr warranty
QNN182-HG450-54 450 W 23.04% -0.290 24.0 kg +50 W, +2.6 pp, +5 yr warranty
HY440-N108BDD 450 W 23.04% -0.300 23.5 kg +50 W, +2.6 pp, +5 yr warranty
NLBK-27-450 450 W 23.04% -0.300 22.9 kg +50 W, +2.6 pp, +5 yr warranty
RS41-450NBG-E3 450 W 23.04% -0.290 24.5 kg +50 W, +2.6 pp, +5 yr warranty
TS-BG54(405)-X 405 W 20.74% -0.330 24.2 kg Heavier, +0.3 pp, +5 yr warranty
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +110 W, cooler, +4.5 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +95 W, cooler, +4.3 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +105 W, cooler, +4.2 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +90 W, cooler, +4.0 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +100 W, cooler, +4.0 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +100 W, cooler, +4.0 pp

Found 1783 panels of the same or similar size to this one, within ±10 mm. See them here Found 1914 panels of the same or similar size to this one, within ±25 mm. See them here Found 3392 panels of the same or similar size to this one, within ±50 mm. See them here Found 3970 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the Sunova TS-BW54 (X Version) still available for purchase?
The TS-BW54 (X Version) series has been discontinued and is no longer part of Sunova's current production lineup. Availability is now limited to remaining distributor stock. Anyone planning to expand an existing installation with this model should check stock levels quickly, since sourcing an identical matching panel later may not be possible.
How does the bifacial design of the TS-BW54 differ from a standard monofacial panel?
The bifacial TS-BW54 has active cells on both sides of the module, capturing not only direct sunlight but also light reflected off the ground surface. The actual energy gain depends on the albedo of the surface beneath the array - it performs best over light-colored roofs, PVC membranes, or light gravel. On a typical dark pitched roof, the bifacial gain is much smaller than on a flat roof.
What is the maximum power output and warranty of the Sunova TS-BW54 X Version?
The module reaches a maximum output of 415 Wp. The manufacturer offers a 25-year product warranty and a 25-year power performance warranty, exceeding the typical market standard of 10-12 years for product coverage. Buyers should still confirm with the seller whether warranty terms remain valid now that the series has been discontinued.
Does the dual glass construction in the TS-BW54 require different mounting than a standard backsheet panel?
The dual glass design is heavier than a typical panel with a rear polymer backsheet, so roof load capacity and mounting clamps compatible with the glass thickness should be checked before installation. The electrical installation process itself is no different from standard panels - dual glass simply offers better moisture protection and slower laminate aging over time.
Do the PERC half-cut cells in the TS-BW54 handle partial shading well?
Yes, splitting cells into half-cut segments limits the power drop of the entire panel when only part of it is shaded, for example by a chimney or antenna. PERC technology further boosts conversion efficiency through a rear light-reflecting layer. Together, these features make the panel perform more consistently on irregularly shaped roofs than older full-cell modules.
Is Sunova, as a tier 2 manufacturer, a worse choice than tier 1 brands?
Tier classification mainly reflects production scale and bank financing history, not directly panel quality. Sunova is headquartered in China and is not listed as tier 1, yet the TS-BW54 X Version series offers specs comparable to tier 1 brands, including a 25-year warranty. Buyers should focus on local warranty service availability, especially since this model has already been discontinued.
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