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Talesun Brand review

TP7G54M/390W

390 Wp PERC Bifacial 70%
ComparePV verdict

Solid all-round for its segment

Rank 11,094 of 14,005
Compare panels Datasheet PDF
Power (Wp)
390
Typical for its class
Efficiency (%)
20.20
Typical · median 19.90%
Density (Wp/m²)
199.7
Typical · median 199.0
Temp (%/°C)
-0.350
Typical · median -0.350
Weight (kg)
21.5
Typical · median 21.4 kg
Warranty (yrs)
25
Typical · median 25 yrs

Talesun TP7G54M Series 108-cell (BIPRO) bifacial modules are designed to maximize energy yield in every square meter. The application of bifacial construction allows for additional energy gain from reflected radiation (albedo), which performs exceptionally well on light roofs, membranes, gravel, or ground installations. Variants with half-cut technology better tolerate partial shading and minimize string performance losses, aiding more stable energy production in typical Polish conditions (chimneys, window frames, trees). The module relies on monocrystalline cells and ensures long-term durability through solutions aimed at minimizing degradation and resistance to phenomena such as PID. An additional advantage is the sealant-filled junction box IP68, crucial for moisture, dust, and intensive operation. This is the premium series for residential, C&I, and utility-scale farms, where performance, reliability, and predictable operation are top priorities.

Ranking

579 panels in the segment PERC 350-400 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.20% 19.90% Typical 11,956
Power density 199.7 199.0 Typical 12,255
Temperature coefficient -0.350 -0.350 Typical 10,419
Weight per kWp 55.1 55.8 Typical 9,554
Performance warranty 25 yrs 25 yrs Typical 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 0 caution
Best for

Residential, commercial and shaded-installations.

Notes from the database
  • 20.2% module efficiency - 0.8pp better than the PERC 0-400W median of 19.4%
  • 199.7 W/m² power density - 5.3 W/m² more than PERC 0-400W median (194.4 W/m²), more power per roof area
  • At -0.35%/°C, hot weather performance is typical for PERC 0-400W panels
  • Weight of 21.5 kg is typical for PERC 0-400W panels
  • Bifacial design (70% factor) captures reflected light - adds 4-10% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 390 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.20 % Typical Segment median 19.90%
Vmpp · Impp 30.65 V · 12.73 A Operating point at max power
Voc · Isc 36.50 V · 13.61 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1722×1134×30 mm · 1.95 m² of roof
Weight 21.5 kg Typical Typical · median 21.4 kg
Cells 108 · PERC Monocrystalline
Bifaciality 70 % Rear output as a share of front
Coefficient Pmax -0.350 %/°C Typical median -0.350 of its segment
Coefficient Voc · Isc -0.260 · 0.048 %/°C
NOCT 43 °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 320 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
-0.350 %/°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.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Talesun TP7G54M/390W 390 W 20.20% -0.350 21.5 kg You are here
LX-440M/182-108+GG 440 W 23.07% -0.240 23.6 kg +50 W, cooler, +2.9 pp
GKA210M340W 340 W 23.00% - 16.2 kg -50 W, lighter, +2.8 pp
GKA210M360W 360 W 23.00% - 16.2 kg Lighter, +2.8 pp, +5 yr warranty
GKA210M380W (1/4*4*38) 380 W 23.00% - 17.1 kg Lighter, +2.8 pp, +5 yr warranty
GKA210M400W (1/2*4*20) 400 W 23.00% - 18.0 kg Lighter, +2.8 pp, +5 yr warranty
GKA210M400W (1/4*4*40) 400 W 23.00% - 18.0 kg Lighter, +2.8 pp, +5 yr warranty
GKA210M380W (1/2*4*19) 380 W 23.00% - 17.1 kg Lighter, +2.8 pp, +5 yr warranty
JT440SYK(B) 440 W 22.90% -0.240 23.0 kg +50 W, cooler, +2.7 pp
TP7F54M-395W 395 W 20.20% -0.350 21.5 kg Very close match
TP7F54M-400W 400 W 20.50% -0.350 21.5 kg +10 W, +0.3 pp
TP7F54M-405W 405 W 20.70% -0.350 21.5 kg +15 W, +0.5 pp
TP7G54M/410W 410 W 21.00% -0.350 21.5 kg +20 W, +0.8 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +120 W, cooler, +4.8 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +105 W, cooler, +4.6 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +115 W, cooler, +4.5 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +100 W, cooler, +4.3 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 Talesun TP7G54M 108-cell (BIPRO) series still available for purchase?
No, this series has been discontinued from Talesun's current production lineup and replaced by newer models. Units may still appear at distributors as remaining stock, but availability is limited and inconsistent. For larger installations, it's worth confirming actual stock levels and production batch consistency with the seller beforehand.
How does the bifacial TP7G54M panel differ from a standard monofacial panel?
The TP7G54M generates power from both sides of the module thanks to a transparent rear layer, capturing light reflected off the ground (albedo). In practice this means extra energy yield, especially on light-colored roofs, membranes, or ground-mount installations over gravel or grass. A monofacial panel only produces electricity from its front side, so at the same 410 Wp nominal rating a bifacial installation can deliver higher real-world annual output.
What warranty comes with the Talesun TP7G54M 108-cell modules?
The series carries a 25-year product warranty and a 25-year power warranty, a premium standard among tier 1 manufacturers. This means Talesun covers both material and workmanship defects and guarantees the module maintains its rated power over a long operating period. It's still worth verifying warranty service terms with the seller, since the series has already been discontinued.
Does half-cut cell technology in the TP7G54M help with partial shading?
Yes, half-cut cells, split down the middle, reduce power losses under partial shading, for example from a chimney, dormer window, or nearby tree. Splitting the cells limits the impact of a shaded section on the entire module string, so the panel loses less energy than a traditional full-cell design in typical Polish roof conditions.
Are Talesun TP7G54M panels suitable for a pitched roof on a single-family home?
Yes, the BIPRO series works well for single-family homes as well as C&I installations and solar farms. On pitched roofs the bifacial gain is smaller than in ground-mount setups, but it still delivers additional yield, especially with light-colored roofing. Half-cut technology further helps in the typical partial-shading conditions common on residential roofs.
What does IP68 junction box rating mean on the TP7G54M module and why does it matter?
IP68 protection means the junction box is fully dust-tight and rated for prolonged submersion in water, a higher standard than the common IP65 or IP67 ratings. This matters for installations exposed to moisture, heavy rainfall, or dust, such as solar farms or agricultural sites, where electrical connections face a greater risk of degradation over time.
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