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Talesun TP7F78M-580W
Talesun Brand review

TP7F78M-580W

580 Wp PERC
ComparePV verdict

Middle of its segment, modest efficiency

Rank 7,701 of 14,005
Compare panels Datasheet PDF
Power (Wp)
580
Typical for its class
Efficiency (%)
20.70
Weak · bottom 8%
Density (Wp/m²)
207.5
Weak · bottom 10%
Temp (%/°C)
-0.350
Typical · median -0.350
Weight (kg)
31.5
Typical · median 30.8 kg
Warranty (yrs)
25
Weak · bottom 24%

The Talesun BISTAR TP7F78M / TP7F78M(H) (580-600W) series is designed for high energy output where every square meter of roof or structure counts. The application of heterojunction technology combined with the 10Busbar wiring system improves module performance under partial shading and helps minimize losses in daily operating conditions. The manufacturer also highlights the special circuit construction that reduces the risk of hot spots, ensuring greater safety and stable yields in installations exposed to uneven sunlight.

Another key feature of this series is the enhanced resistance to PID and robust construction with an IP68 junction box, which facilitates designing systems in environments with high humidity and dust. This is an excellent choice for installers working on commercial and industrial systems, as well as investors seeking reliable module performance and lower energy costs throughout the installation's lifecycle.

Ranking

589 panels in the segment PERC 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 20.70% 21.29% Weak · bottom 8% 10,764
Power density 207.5 212.9 Weak · bottom 10% 10,596
Temperature coefficient -0.350 -0.350 Typical 10,419
Weight per kWp 54.3 52.7 Typical 8,548
Performance warranty 25 yrs 27 yrs Weak · bottom 24% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

0 positive · 3 caution
Best for

Commercial, utility-scale and shaded-installations.

Not ideal for

Tight roof space, roofs where every square metre has to count and owners who want a long output guarantee.

Watch-outs
20.70% module efficiency

Bottom 8% of the PERC 550-600 W segment, against a median of 21.29%. Ranked 10,764th in the whole database.

207.5 watts per square metre

Bottom 10% of the PERC 550-600 W segment, against a median of 212.9. Ranked 10,596th in the whole database.

25 year performance warranty

Bottom 24% of the PERC 550-600 W segment, against a median of 27 yrs.

Notes from the database
  • Module efficiency of 20.7% is 0.6pp below average for PERC 550-600W panels (median: 21.3%)
  • At 207.5 W/m², this panel generates 5.4 W/m² less per unit area than PERC 550-600W median (212.9 W/m²)
  • At -0.35%/°C, hot weather performance is typical for PERC 550-600W panels
  • Ranked #10764 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 580 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 20.70 % Weak Segment median 21.29%
Vmpp · Impp 44.97 V · 12.90 A Operating point at max power
Voc · Isc 53.59 V · 13.79 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2465×1134×35 mm · 2.80 m² of roof
Weight 31.5 kg Typical Typical · median 30.8 kg
Cells 156 · PERC Monocrystalline
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 12 years Hardware defects only
Performance warranty 25 years Weak bottom 24% · median 27 yrs
End-of-warranty output 84.8 % Equals 476 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
-

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
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Talesun TP7F78M-580W 580 W 20.70% -0.350 31.5 kg You are here
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg Cooler, lighter, +4.1 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg Cooler, lighter, +3.9 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +50 W, cooler, +3.7 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg Cooler, 15 kg lighter, +3.7 pp
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg Cooler, lighter, +3.7 pp
TP7F78M-585W 585 W 20.90% -0.350 31.5 kg Very close match
TP7F78M-590W 590 W 21.10% -0.350 31.5 kg +10 W, +0.4 pp
TP7F78M-595W 595 W 21.30% -0.350 31.5 kg +15 W, +0.6 pp
TP7F78M-600W 600 W 21.50% -0.350 31.5 kg +20 W, +0.8 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +100 W, cooler, +4.5 pp
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +95 W, cooler, +4.3 pp
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +120 W, cooler, +4.3 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +115 W, cooler, +4.2 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg +90 W, cooler, +4.1 pp
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg +90 W, cooler, +4.1 pp
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +90 W, cooler, +4.1 pp

Found 616 panels of the same or similar size to this one, within ±10 mm. See them here Found 616 panels of the same or similar size to this one, within ±25 mm. See them here Found 616 panels of the same or similar size to this one, within ±50 mm. See them here Found 1813 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Is the Talesun BISTAR TP7F78M / TP7F78M(H) series still available for purchase?
The BISTAR TP7F78M / TP7F78M(H) (580-600W) series has been discontinued by Talesun and replaced by newer models built on TOPCon technology. Panels may still be found through distributors as remaining stock, but with no guarantee of continued supply for expanding existing installations. For larger projects, check current availability with your supplier and consider the manufacturer's current lineup instead.
What warranty applies to Talesun BISTAR TP7F78M panels?
The manufacturer covers the series with a 12-year product warranty and a 25-year linear power output warranty. This means that after 25 years of operation the module should still generate a significant share of its original rated power. As a tier 1 manufacturer, Talesun provides service support in line with the terms of the warranty card, which is standard for commercial and industrial-grade panels.
How does 10BB technology in BISTAR TP7F78M panels differ from standard modules?
The 10BB layout means ten busbars on each half-cut cell, reducing series resistance and current losses inside the module. Combined with half-cut PERC cell technology, this improves module performance under partial shading and helps maintain higher energy conversion efficiency in real-world conditions, for example under soiling or shade cast by chimneys.
Are Talesun BISTAR TP7F78M panels suitable for installations in humid climates?
Yes, the series features enhanced resistance to potential-induced degradation (PID) and a robust junction box rated IP68. This makes the modules well-suited to installations exposed to high humidity, dust, or variable weather conditions, making them a good choice for commercial and industrial projects outside typical temperate climates.
Are BISTAR TP7F78M panels bifacial modules?
No, the TP7F78M / TP7F78M(H) series consists of monofacial panels using PERC cell technology. They generate energy only from irradiance hitting the front side of the module directly, without the additional rear-side gain typical of bifacial panels. This makes them simpler to install and sufficient for most standard rooftop and ground-mount installations.
What kind of installations are best suited to Talesun BISTAR TP7F78M panels rated up to 600W?
With a high unit power of up to 600 Wp, these panels are best suited to large commercial and industrial installations where maximizing energy output on limited roof or ground area matters. Fewer modules needed to reach a given installed capacity lowers mounting structure, cabling, and labor costs per kilowatt installed.
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