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Tongwei TWMNH-48HE455
Tongwei Brand review

TWMNH-48HE455

455 Wp N-type
ComparePV verdict

Strong in heat, no clear weak spot

Rank 7,953 of 14,129
Compare panels Datasheet PDF
Power (Wp)
455
Weak · bottom 22%
Efficiency (%)
22.80
Typical · median 22.52%
Density (Wp/m²)
227.7
Typical · median 225.3
Temp (%/°C)
-0.280
Strong · top 21%
Weight (kg)
23.7
Typical · median 23.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Tongwei TWMNH-48HE (TNC 2.0) series was designed to maximize energy yield in real-world operating conditions - beyond the laboratory. Its key advantage is 0BB (908) technology, a solution that reinforces cell interconnections and helps mitigate the effects of microcracks that can occur during transportation, on rooftops, or when operating under varying temperatures. This translates to greater parameter stability and more reliable performance year after year.

The module utilizes TPE, which supports the repair of edge defects on damaged cells and minimizes recombination losses - enabling the panel to better utilize light even in less-than-ideal conditions. Meanwhile, precise screen printing enhances current conduction and reduces losses, contributing to improved daily power generation.

Another benefit is enhanced bifacial capability (Poly Tech), ideal for locations where reflected energy matters: light-colored roofs, carports, facade-mounted systems, or ground installations. This is the series for investors and installers who want to combine high efficiency with durability and predictable energy output.

Ranking

302 panels in the segment N-type 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.80% 22.52% Typical 2,769
Power density 227.7 225.3 Typical 2,943
Temperature coefficient -0.280 -0.290 Strong · top 21% 1,347
Weight per kWp 52.1 49.7 Typical 5,573
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Price offers

2 from shops we track
Shop Country Price Per kWp Stock Offer updated
www.photovoltaik-shop.com Germany 71 € incl. VAT 156.04 €/kWp In stock 23h ago Visit shop
solarvic.at Austria 79 € net 173.63 €/kWp In stock 23h ago Visit shop

Signals from the data

1 positive · 0 caution
Best for

Residential and commercial.

Strengths
-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
  • At 22.8% efficiency, this panel is on par with typical N-type 450-500W modules
  • At 227.7 W/m² power density, roof space requirements are typical for N-type 450-500W panels
  • At -0.28%/°C, hot weather performance is typical for N-type 450-500W panels
  • Ranked #2769 out of 14129 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 455 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.80 % Typical Segment median 22.52%
Vmpp · Impp 30.06 V · 15.14 A Operating point at max power
Voc · Isc 36.10 V · 15.85 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 398 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 455 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 Power-Voltage (P-V) Curve Power-Voltage (P-V) Curve 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-48HE455 455 W 22.80% -0.280 23.7 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +40 W, lighter, +2.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +50 W, cooler, +1.9 pp
WST-505BKX54-A2 505 W 24.70% -0.260 25.0 kg +50 W, cooler, +1.9 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +35 W, lighter, +1.7 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +45 W, cooler, +1.7 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +45 W, lighter, +1.7 pp
TWMNH-48HD430 430 W 21.50% -0.280 20.9 kg -25 W, lighter, -1.3 pp
TWMNH-48HD435 435 W 21.80% -0.280 20.9 kg -20 W, lighter, -1.0 pp
TWMNH-48HD440 440 W 22.00% -0.280 20.9 kg -15 W, lighter, -0.8 pp
TWMNH-48HD445 445 W 22.30% -0.280 20.9 kg -10 W, lighter, -0.5 pp
TWMNH-48HD450 450 W 22.50% -0.280 20.9 kg Lighter, -0.3 pp
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +55 W, cooler, +2.2 pp

Found 1402 panels of the same or similar size to this one, within ±10 mm. See them here Found 1432 panels of the same or similar size to this one, within ±25 mm. See them here Found 3651 panels of the same or similar size to this one, within ±50 mm. See them here Found 3999 panels of the same or similar size to this one, within ±100 mm. See them here

About the TWMNH-48HE (TNC 2.0) series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

What is 0BB (908) cell-connection technology in the Tongwei TWMNH-48HE panels, and does it actually help?
0BB (908) is a busbar-less cell interconnection method that uses thin soldered wires distributed across the entire cell surface instead of traditional busbars. This gives current more alternative paths to flow, so a single microcrack (from transport, rooftop handling, or thermal cycling) doesn't cut off an entire cell segment from the circuit. In practice, this lowers the risk of sudden power drops and delivers more stable output over the panel's service life.
What is the maximum power output and efficiency of the Tongwei TWMNH-48HE TNC 2.0 panel?
The top variant in this series reaches up to 470 Wp of maximum power, with module efficiency in the 22.5-23.5% range. This is achieved through N-type cells, precise stencil printing for the conductive grid, and TPE technology that reduces recombination losses. For roofs with limited surface area, this means more installed capacity without adding extra panels.
What warranty applies to the Tongwei TWMNH-48HE (TNC 2.0) panels?
The manufacturer provides a 15-year product warranty covering material and workmanship defects, plus a 30-year power output warranty guaranteeing a minimum retained power percentage over the system's lifetime. This is a strong benchmark for modern N-type modules and an important factor when comparing offers, especially given a system's payback period.
Do Tongwei TWMNH-48HE panels perform well in summer heat on the roof?
Yes, N-type modules in this series have a better power temperature coefficient than conventional P-type panels, meaning less output loss at high module temperatures (which can exceed 60°C on a roof in summer). Combined with TPE technology that reduces recombination losses, the panel maintains rated power better on hot, sunny days - precisely when conventional panels lose the most.
How does N-type TNC 2.0 technology differ from common PERC panels?
N-type cells use purer silicon and show slower first-year degradation compared to conventional P-type PERC cells. The TNC 2.0 series further combines N-type with 0BB and TPE technology, cutting energy losses and improving long-term parameter stability. The result is higher, more predictable energy yield throughout the 30-year power warranty period.
Is Tongwei a reliable, safe manufacturer choice for solar panels?
Tongwei is classified as a Tier 1 manufacturer, indicating financial stability, in-house production capacity (including cells), and inclusion in BloombergNEF bankability rankings. Headquartered in China, the company is one of the world's largest suppliers of PV cells and modules, which supports part availability, warranty service, and financing approval by banks and leasing companies.
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