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Sunova Brand review

TS-BGT54(425)

425 Wp N-type Bifacial 80%
ComparePV verdict

Middle of its segment, heavy for its output

Rank 9,952 of 14,005
Compare panels Datasheet PDF
Power (Wp)
425
Typical for its class
Efficiency (%)
21.80
Typical · median 21.91%
Density (Wp/m²)
217.6
Typical · median 218.3
Temp (%/°C)
-0.290
Typical · median -0.290
Weight (kg)
24.2
Weak · 2.2 kg above median
Warranty (yrs)
30
Typical · median 30 yrs

The Sunova TS-BGT54 series are modern, bifacial modules with a dual glass construction, designed to maximize energy output from the same surface area and operate reliably for years in demanding climates. The use of N-type cells in TOPCon technology helps to minimize losses typical of older solutions and improves performance, especially in low-light conditions - winter, mornings, evenings, and cloudy days. Bifaciality also allows for the additional use of reflected light from the ground, which can significantly increase production in locations where the roof or ground has a brighter finish or snow is present.

Dual glass enhances resistance to moisture, temperature changes, and micro-cracks, making TS-BGT54 well-suited for installations in harsh conditions and where long-term reliability is crucial. It is a good choice for homes, businesses, and C&I projects that prioritize high efficiency, durability, and predictable performance without compromising.

Ranking

321 panels in the segment N-type 400-450 W
Metric This panel Median Position in segment Overall rank
Module efficiency 21.80% 21.91% Typical 7,022
Power density 217.6 218.3 Typical 7,172
Temperature coefficient -0.290 -0.290 Typical 2,165
Weight per kWp 56.9 51.2 Weak · bottom 12% 10,941
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 1 caution
Best for

Residential, commercial and cold-climate.

Not ideal for

Weight-limited structures.

Watch-outs
56.9 kg per kWp

Bottom 12% of the N-type 400-450 W segment, against a median of 51.2.

Notes from the database
  • Efficiency of 21.8% matches the N-type 400-450W median
  • Power density of 217.6 W/m² matches the N-type 400-450W median
  • Temperature coefficient of -0.29%/°C matches the N-type 400-450W median
  • Weight of 24.2 kg is 2.2 kg above N-type 400-450W median (22.0 kg) - verify structural support
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 425 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 21.80 % Typical Segment median 21.91%
Vmpp · Impp 32.67 V · 13.01 A Operating point at max power
Voc · Isc 38.59 V · 13.64 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 24.2 kg Weak Weak · 2.2 kg above median
Cells 108 · N-type Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.290 %/°C Typical median -0.290 of its segment
Coefficient Voc · Isc -0.280 · 0.040 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 371 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Sunova in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 425 Wp appear here. The rest cover the whole series.

Linear Performance Warranty Linear Performance Warranty Whole series Temperature Dependence of Isc, Voc, Pmax Temperature Dependence of Isc, Voc, Pmax Whole series

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
-0.290 %/°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 Sunova panels
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Sunova TS-BGT54(425) 425 W 21.80% -0.290 24.2 kg You are here
SPR-MAX7-475 475 W 24.00% -0.270 21.1 kg +50 W, +2.2 pp, +10 yr warranty
JST-EDMH-(445-465)W-TD (465W class) 465 W 23.81% -0.300 20.5 kg +40 W, lighter, +2.0 pp
JAT54S40-475/LR 475 W 23.80% -0.260 19.3 kg +50 W, lighter, +2.0 pp
TWMNH-48HW475 475 W 23.80% -0.280 23.7 kg +50 W, +2.0 pp
CHSM48RN(DG)/F-BH-475 475 W 23.80% -0.290 24.5 kg +50 W, +2.0 pp
AIKO-A475-MCE54Mw 475 W 23.80% -0.260 21.0 kg +50 W, lighter, +2.0 pp
AIKO-A475-MAH54Mw 475 W 23.80% -0.260 21.5 kg +50 W, cooler, +2.0 pp
TS-BW54(400) 400 W 20.48% -0.330 21.5 kg Hotter, -1.3 pp, -5 yr warranty
TS-BG54(405)-X 405 W 20.74% -0.330 24.2 kg -20 W, hotter, -1.1 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +85 W, cooler, +3.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +70 W, lighter, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +80 W, cooler, +2.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +65 W, lighter, +2.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +75 W, cooler, +2.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +75 W, cooler, +2.7 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
How does the Sunova TS-BGT54 differ from standard monofacial panels?
TS-BGT54 modules are bifacial, meaning they generate power from both the front and rear side. This allows them to capture additional reflected light from the roof, ground, or snow, which under favorable mounting conditions can boost energy yield by up to several percent compared to a classic monofacial panel of the same 425 Wp rating.
What is N-type TOPCon technology in the TS-BGT54, and does it bring real benefits?
TOPCon is an N-type cell technology that reduces energy losses typical of older P-type cells and performs better under low-light conditions such as winter, mornings, or cloudy days. In practice this means higher module efficiency, lower power degradation over time, and more stable annual yields than cheaper panels built on older PERC technology.
What warranty does Sunova offer on the TS-BGT54 series, and what does it cover?
The manufacturer provides a 15-year product warranty against material and workmanship defects, plus a 30-year power output warranty guaranteeing a high level of module performance throughout that period. This is longer than the market standard from a few years ago and reflects the durability of the dual-glass design and the quality of the N-type cells.
Can the dual-glass construction of the TS-BGT54 handle harsh weather conditions?
Yes, dual glass replaces the standard backsheet with a second layer of tempered glass, significantly improving resistance to moisture, temperature swings, and micro-cracking of the cells. This construction handles snow load, strong wind, and large temperature swings well, making it suitable for both residential roofs and larger C&I installations.
How much real-world output can a Sunova TS-BGT54 425 Wp panel deliver on a typical roof in Poland?
The 425 Wp maximum power rating is measured under STC conditions, and actual output depends on irradiance, roof tilt, and azimuth. Thanks to bifaciality and TOPCon technology, the panel maintains relatively high yields even in weaker light, so in practice it can produce more annual energy than a classic monofacial panel of the same nominal power, especially on light-colored roofs or ground-mounted arrays.
Is Sunova a reliable manufacturer given it's not a Tier 1 company?
Sunova (now also operating under the Thornova Solar brand) is not on the Tier 1 list, a classification based mainly on the scale of bank financing rather than product quality. The company is headquartered in China and offers modules with advanced N-type TOPCon technology and dual-glass construction, backed by a long 15/30-year warranty that reflects confidence in the TS-BGT54 series' durability.
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