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Tongwei TWMNH-48HW475
Tongwei Brand review

TWMNH-48HW475

475 Wp N-type
ComparePV verdict

Efficiency leader, no clear weak spot

Rank 5,862 of 14,005
Compare panels Datasheet PDF
Power (Wp)
475
Typical for its class
Efficiency (%)
23.80
Strong · top 5%
Density (Wp/m²)
237.7
Strong · top 5%
Temp (%/°C)
-0.280
Strong · top 21%
Weight (kg)
23.7
Typical · median 23.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

Tongwei TWMNH-48HW Series are monofacial dual-glass modules featuring a black frame, engineered for stable performance in real rooftop and commercial installations - where durability, aesthetics, and predictable yield matter. The application of N-type cells in a half-cell configuration helps minimize module losses and improves performance under partial shading, effectively simplifying the design of complex roof geometry systems.

The series' key feature is its focus on reliability: the glass-to-glass construction enhances resistance to atmospheric conditions and long-term loads, while Tongwei’s production technologies, such as 0BB (908 Technology) with ultra-multiple connections, boost resistance to micro-cracks and material fatigue. Furthermore, TPE and precise screen printing are optimized for better current conduction and repeatable quality.

This is an excellent choice for investors seeking to combine high manufacturing standards with easy integration into modern PV systems - from residential homes to C&I projects.

Ranking

301 panels in the segment N-type 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.80% 22.52% Strong · top 5% 433
Power density 237.7 225.2 Strong · top 5% 467
Temperature coefficient -0.280 -0.290 Strong · top 21% 1,309
Weight per kWp 49.9 49.5 Typical 3,274
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

Residential, commercial and shaded-installations.

Strengths
23.80% module efficiency

Top 5% of the N-type 450-500 W segment, against a median of 22.52%. Ranked 433rd in the whole database.

237.7 watts per square metre

Top 5% of the N-type 450-500 W segment, against a median of 225.2. Ranked 467th in the whole database.

-0.280 %/°C temperature coefficient

Top 21% of the N-type 450-500 W segment, against a median of -0.290.

Notes from the database
  • 23.8% module efficiency - 1.3pp better than the N-type 450-500W median of 22.5%
  • 237.7 W/m² power density - 12.5 W/m² more than N-type 450-500W median (225.2 W/m²), more power per roof area
  • Temperature coefficient of -0.28%/°C matches the N-type 450-500W median
  • Ranked #433 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 475 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.80 % Strong Segment median 22.52%
Vmpp · Impp 31.05 V · 15.30 A Operating point at max power
Voc · Isc 36.70 V · 15.97 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1762×1134×30 mm · 2.00 m² of roof
Weight 23.7 kg Typical Typical · median 23.7 kg
Cells 96 · N-type Monocrystalline
Coefficient Pmax -0.280 %/°C Strong top 21% of its segment
Coefficient Voc · Isc -0.240 · 0.046 %/°C
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 415 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 475 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

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
-0.280 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Tongwei TWMNH-48HW475 475 W 23.80% -0.280 23.7 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +35 W, cooler, +1.2 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg Cooler, lighter, +1.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +30 W, cooler, +0.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg Cooler, lighter, +0.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +25 W, cooler, +0.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +25 W, lighter, +0.7 pp
TWMNH-48HD430 430 W 21.50% -0.280 20.9 kg -45 W, lighter, -2.3 pp
TWMNH-48HD435 435 W 21.80% -0.280 20.9 kg -40 W, lighter, -2.0 pp
TWMNH-48HD440 440 W 22.00% -0.280 20.9 kg -35 W, lighter, -1.8 pp
TWMNH-48HD445 445 W 22.30% -0.280 20.9 kg -30 W, lighter, -1.5 pp
TWMNH-48HD450 450 W 22.50% -0.280 20.9 kg -25 W, lighter, -1.3 pp

Found 1395 panels of the same or similar size to this one, within ±10 mm. See them here Found 1425 panels of the same or similar size to this one, within ±25 mm. See them here Found 3614 panels of the same or similar size to this one, within ±50 mm. See them here Found 3962 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is the maximum power and efficiency of the Tongwei TWMNH-48HW panel?
The panel reaches up to 475 Wp with an efficiency of 22.8-23.8%, thanks to N-type cells in a half-cut configuration (96 half-cells cut from 48 full cells). A low power temperature coefficient of -0.28%/°C means smaller yield losses on hot days compared to older P-type technology, translating into higher annual energy production.
Are Tongwei TWMNH-48HW panels suitable for a pitched residential roof?
Yes, the 1762×1134×30 mm format and 23.7 kg weight fit standard mounting systems for typical pitched roofs. The half-cut cell design limits power loss from partial shading caused by chimneys or dormers, making it easier to design layouts on roofs with irregular geometry. However, the higher weight of the dual-glass construction should be factored into the mounting structure selection.
What warranty comes with the Tongwei TWMNH-48HW series?
The manufacturer offers a 15-year product warranty and a 30-year linear power warranty - at least 99% of nominal power is guaranteed after the first year, and no less than 87.4% after 30 years. These are among the longer coverage periods on the market, backed by Tongwei's status as a Tier 1 manufacturer with a Chinese manufacturing base.
How does the dual-glass construction of the TWMNH-48HW differ from a standard backsheet panel?
A 2.0+2.0 mm glass layer on both sides of the cells, instead of a polymer backsheet, significantly improves resistance to moisture, PID degradation, and UV exposure, resulting in longer service life and lower power degradation over time. The trade-off is added panel weight, which is why dual-glass modules perform especially well in installations exposed to harsh weather conditions.
What is the 0BB (908 Technology) used in the TWMNH-48HW, and is it worth choosing?
0BB is a zero-busbar technology that replaces traditional soldered busbars with ultra-multiple thin conductive connections. This reduces the risk of microcracks and material fatigue from thermal cycling, improves module aesthetics by minimizing visible lines on the surface, and increases current-collection efficiency from the cell. It's a genuine benefit for long-term installation durability.
Is the Tongwei TWMNH-48HW panel bifacial, and can it be mounted on a facade?
No, the TWMNH-48HW series is a monofacial module - it generates energy only from the front side of the panel. It is not optimized for installations relying on ground or surface albedo reflection, typical of bifacial modules. It performs very well, however, in standard rooftop and ground-mount installations where structural durability and predictable single-sided yield matter most.
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