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Tongwei Brand review

TWMND-72HD590

590 Wp N-type Bifacial 80%
ComparePV verdict

Strong in heat, no clear weak spot

Rank 3,786 of 14,005
Compare panels Datasheet PDF
Power (Wp)
590
Strong · top 15%
Efficiency (%)
22.80
Strong · top 20%
Density (Wp/m²)
228.4
Strong · top 17%
Temp (%/°C)
-0.280
Strong · top 9%
Weight (kg)
31.5
Typical · median 29.5 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Tongwei TWMND N-type Half-cell Bifacial Module (72) 72HD580-600W is designed for maximizing energy yield where every percentage point of generation matters - from utility-scale PV farms to large commercial rooftops. Its key advantage is the glass-glass bifacial structure, which effectively utilizes reflected light from the ground, roof membranes, or snow, improving the energy balance of the installation without increasing its surface area. The application of N-type cells in TOPCon technology translates to high efficiency across various conditions and better parameter stability over time, helping mitigate the risk of underestimating production. The half-cut with multi-busbar metallization enhances resistance to microcracking and improves performance under partial shading, which is crucial for rooftops with technical obstructions. In practice, the series addresses rising BOS costs, as the high power per module enables more efficient string construction. For investors, the linear long warranty is also significant, valuable for projects with financing and a long payback period.

Ranking

259 panels in the segment N-type 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.80% 22.45% Strong · top 20% 2,714
Power density 228.4 224.5 Strong · top 17% 2,598
Temperature coefficient -0.280 -0.290 Strong · top 9% 1,309
Weight per kWp 53.4 52.3 Typical 7,293
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

3 positive · 0 caution
Best for

Commercial, utility-scale and shaded-installations.

Strengths
-0.280 %/°C temperature coefficient

Top 9% of the N-type 550-600 W segment, against a median of -0.290. Ranked 1,309th in the whole database.

228.4 watts per square metre

Top 17% of the N-type 550-600 W segment, against a median of 224.5.

22.80% module efficiency

Top 20% of the N-type 550-600 W segment, against a median of 22.45%.

Notes from the database
  • At 22.8% efficiency, this panel is on par with typical N-type 550-600W modules
  • 228.4 W/m² power density - 3.9 W/m² more than N-type 550-600W median (224.5 W/m²), more power per roof area
  • At -0.28%/°C, hot weather performance is typical for N-type 550-600W panels
  • At 31.5 kg, this panel is 2.0 kg heavier than the N-type 550-600W median (29.5 kg) - more demanding for installation crews
  • Bifacial design (80% factor) captures reflected light - adds 4-12% yield on ground-mount or white roof

Specifications

Open datasheet PDF
Nominal power (Pmax) 590 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.80 % Strong Segment median 22.45%
Vmpp · Impp 44.27 V · 13.33 A Operating point at max power
Voc · Isc 52.70 V · 13.95 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2278×1134×30 mm · 2.58 m² of roof
Weight 31.5 kg Typical Typical · median 29.5 kg
Cells 144 · N-type Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.280 %/°C Strong top 9% of its segment
Coefficient Voc · Isc -0.240 · 0.046 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 12 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 516 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Tongwei in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 590 Wp appear here. The rest cover the whole series.

Linear Power Output Warranty Linear Power Output Warranty Whole series Cell temperature 25°C Cell temperature 25°C Whole series P-V Curve (Power vs Voltage) P-V Curve (Power vs Voltage) 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
-0.280 %/°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.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Tongwei TWMND-72HD590 590 W 22.80% -0.280 31.5 kg You are here
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg -30 W, lighter, +2.0 pp
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +50 W, lighter, +2.0 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg -35 W, lighter, +1.8 pp
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +45 W, lighter, +1.8 pp
AIKO-A630-MAH72Dw 630 W 24.40% -0.260 32.5 kg +40 W, cooler, +1.6 pp
LR7-60HVHL-550M 550 W 24.40% -0.260 16.3 kg -40 W, 15 kg lighter, +1.6 pp
TWMND-72 HD575 575 W 22.30% -0.280 31.5 kg -15 W, -0.5 pp
TWMND-72HD580 580 W 22.50% -0.280 31.5 kg -10 W, -0.3 pp
TWMND-72HD585 585 W 22.60% -0.280 31.5 kg Very close match
TWMND-72HD595 595 W 23.00% -0.280 31.5 kg Very close match
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +60 W, lighter, +2.4 pp
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +55 W, lighter, +2.2 pp

Found 2326 panels of the same or similar size to this one, within ±10 mm. See them here Found 2368 panels of the same or similar size to this one, within ±25 mm. See them here Found 2382 panels of the same or similar size to this one, within ±50 mm. See them here Found 2547 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
Are Tongwei TWMND 72HD580-600W panels still available for purchase?
The TWMND 72HD580-600W series has been discontinued from current production and replaced by newer Tongwei models. Availability depends on distributor stock - it's worth asking about remaining batches from recent shipments. For new projects, the manufacturer recommends current N-type TOPCon modules from the same technology line, with comparable or higher power output.
How much extra energy does the bifacial glass-glass design of this panel actually generate?
The glass-glass bifacial construction captures light reflected from the ground, roof surface, or snow, typically adding several to over ten percent extra yield compared to a monofacial module - depending on ground albedo, mounting angle, and module height above the surface. Best results occur on light-colored roofs, gravel, or ground-mount installations with airflow beneath the panels.
What is N-type TOPCon technology in Tongwei panels, and is it better than PERC?
TOPCon is an N-type cell technology with an additional passivation layer that reduces energy losses and parameter degradation over time compared to older P-type PERC cells. This results in higher efficiency, better performance at high temperatures, and slower power decline over the years of operation, which matters for long-term investment projects.
What warranty comes with Tongwei TWMND 72HD modules and what does it cover?
The manufacturer provides a 12-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. This means a guaranteed, gradually declining energy production level over three decades, an important factor when financing an installation through a loan or lease with a long payback horizon.
Does the half-cut, multi-busbar format in these panels reduce losses from partial shading?
Yes, splitting cells into halves and using a higher number of busbars limits the power drop of the whole string when only part of the panel is shaded - for example by a chimney, antenna, or leaf. This design also lowers the risk of microcracks and local cell overheating, extending the module's lifespan.
Are the 580-600W TWMND modules suitable for large commercial installations and PV farms?
Yes, the high power of a single module and the full-size 72-cell format are aimed mainly at large commercial rooftops and ground-mount installations, where optimizing BOS costs - cabling, mounting structures, and inverters - matters most. Fewer modules needed to reach a target power output shortens installation time and lowers the per-kW cost of the system.
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