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Tongwei Solar TWMNH-48HD450W

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SKU PES-SPS-SOL-21058

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Tongwei Solar TWMNH-48HD450W $180.00

Specifications

Power Rating 450W

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You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

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Tongwei TWMNH-48HD450W 450W N-Type Bifacial Dual Glass Solar Panel

Model TWMNH-48HD450W | N-Type TOPCon Half-Cell | 96 Cells Monocrystalline | Bifacial Dual-Glass | 1500V System Voltage

450 Wp

Max Power Output

22.5%

Module Efficiency

N-Type TOPCon

Product Overview

The Tongwei Solar TWMNH-48HD450W N-type bifacial dual glass solar panel delivers high performance in a compact format. This 450 Wp module uses advanced N-type TOPCon monocrystalline half-cells to achieve up to 22.5% efficiency. Its bifacial architecture captures light on both sides, helping increase energy yield on reflective surfaces. The dual-glass construction improves durability and long-term reliability compared with standard backsheet modules. With a maximum system voltage of 1500 V, it integrates easily into modern residential and commercial arrays. The black anodized frame gives clean lines that suit carports, balcony railings, and rooftop systems. A robust 30-year linear power warranty and low degradation rate support long-term energy savings. This panel is designed for installers who need dependable output, strong mechanical strength, and attractive aesthetics.

Key Benefits

High power density in a compact footprint: The 450 Wp rating and 22.5% efficiency provide strong output from a 1762 x 1134 mm module, ideal where roof space is limited.

Bifacial energy gain for higher yields: Rear-side generation, with an 80% bifaciality factor, can add significant energy when mounted over light or reflective surfaces.

Durable dual-glass construction: Front and rear 2.0 mm semi tempered glass protect cells from weather, improving resistance to moisture, UV, and microcracks.

Reliable long-term performance: A 15-year product warranty and 30-year linear power warranty, with only 0.4% annual degradation after year one, support stable output.

Installation-friendly design: Standard 4 mm² cables, 1200 mm length, IP68 junction box, and 30 A series fuse rating simplify integration with mainstream inverters and mounting systems.

How It Works

This module converts sunlight into DC electricity using high-efficiency N-type TOPCon monocrystalline half-cells. Light strikes the front glass, passes through the anti-reflective coating, and is absorbed by the solar cells. Photons excite electrons in the silicon lattice and create an electric current that flows through the cell interconnections. The bifacial structure also allows light to enter from the rear through the transparent glass back. Reflected light from the ground, roofing membranes, or surrounding surfaces contributes additional current. Both front and rear currents combine and are collected by the integrated junction box. From there, the generated DC power travels through the 4 mm² cables to the system inverter. The inverter converts this DC power into AC electricity suitable for household loads or export to the grid, depending on the system design.

N-Type TOPCon half-cell generation: The panel uses 96 N-type TOPCon half-cells arranged in a 6 x 16 layout. The cell design lowers recombination losses, which helps maintain higher efficiency and better performance at elevated temperatures.

Bifacial rear-side contribution: The transparent rear glass lets light reach the back of the cells. With an 80±10% bifaciality factor, rear irradiance can add several percent more output, especially on carports, balcony railings, or light-colored roofs.

Stable performance across conditions: The temperature coefficient of Pmax is -0.28%/°C, which limits power losses during hot periods. The operating range from -40°C to +85°C enables reliable use in diverse climates.

Technical Specifications

Brand	Tongwei Co., Ltd. (TW Solar)
Model Number	TWMNH-48HD450W
Cell Technology and Type	N-type TOPCon monocrystalline half-cell
Cell Count and Orientation	96 cells (6 × 16)
Technology	Bifacial dual-glass module
Nominal Power Range	445 – 465 Wp
Maximum Power (Pmax) at STC	450 Wp
Module Efficiency at 450 Wp	22.5%
Efficiency Range (Series)	22.3 – 23.3%
Power Output Tolerance	0 ~ +3%
Voltage at Maximum Power (Vmpp)	30.19 V
Current at Maximum Power (Impp)	14.91 A
Open Circuit Voltage (Voc)	35.75 V
Short Circuit Current (Isc)	15.95 A
Bifaciality Factor	80 ± 10%
Maximum System Voltage	1500 V DC
Maximum Series Fuse Rating	30 A
Operating Temperature Range	-40°C to +85°C
Temperature Coefficient of Pmax	-0.28%/°C
Temperature Coefficient of Voc	-0.24%/°C
Temperature Coefficient of Isc	+0.046%/°C
Module Dimensions (H × W × D)	1762 × 1134 × 30 mm
Weight	23.7 kg
Front Glass	2.0 mm semi tempered glass with anti-reflection coating
Rear Glass	2.0 mm semi tempered glass, transparent
Frame Type and Color	Black anodized aluminum alloy frame
Junction Box	IP68 rated, 3 bypass diodes
Cable Cross Section and Length	4 mm², 1200 mm ± length, customizable
Mechanical Test Load Capacity	5400 Pa front / 2400 Pa rear (static test)
Packaging Quantity	36 panels per pallet; 936 panels per 40' HC container

Certifications & Compliance

Certifications: IEC 61215, IEC 61730, IEC TS 62804, IEC 61701, IEC 62716, IEC 60068-2-68, EC62941:2019, ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, ISO 50001:2018.
Inverter Compatibility: Compatible with most modern grid-tied and hybrid inverters rated for 1500 V DC systems when string design limits current and voltage within manufacturer guidelines.
Environmental: Designed for harsh outdoor conditions, with resistance to salt mist, ammonia, sand, and dust as tested under relevant IEC standards.
Warranty: 15-year material and workmanship warranty plus 30-year linear power warranty with 1% first-year degradation and 0.4% annual degradation thereafter, guaranteeing 99% output in year one and 87.4% output in year thirty.

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Tongwei TWMNH-48HD450W 450W N-Type Bifacial Dual Glass Solar Panel

Model TWMNH-48HD450W | N-Type TOPCon Half-Cell | 96 Cells Monocrystalline | Bifacial Dual-Glass | 1500V System Voltage

450 Wp

Max Power Output

22.5%

Module Efficiency

N-Type TOPCon

Product Overview

Key Benefits

High power density in a compact footprint: The 450 Wp rating and 22.5% efficiency provide strong output from a 1762 x 1134 mm module, ideal where roof space is limited.

Bifacial energy gain for higher yields: Rear-side generation, with an 80% bifaciality factor, can add significant energy when mounted over light or reflective surfaces.

Durable dual-glass construction: Front and rear 2.0 mm semi tempered glass protect cells from weather, improving resistance to moisture, UV, and microcracks.

Reliable long-term performance: A 15-year product warranty and 30-year linear power warranty, with only 0.4% annual degradation after year one, support stable output.

Installation-friendly design: Standard 4 mm² cables, 1200 mm length, IP68 junction box, and 30 A series fuse rating simplify integration with mainstream inverters and mounting systems.

How It Works

Technical Specifications

Brand	Tongwei Co., Ltd. (TW Solar)
Model Number	TWMNH-48HD450W
Cell Technology and Type	N-type TOPCon monocrystalline half-cell
Cell Count and Orientation	96 cells (6 × 16)
Technology	Bifacial dual-glass module
Nominal Power Range	445 – 465 Wp
Maximum Power (Pmax) at STC	450 Wp
Module Efficiency at 450 Wp	22.5%
Efficiency Range (Series)	22.3 – 23.3%
Power Output Tolerance	0 ~ +3%
Voltage at Maximum Power (Vmpp)	30.19 V
Current at Maximum Power (Impp)	14.91 A
Open Circuit Voltage (Voc)	35.75 V
Short Circuit Current (Isc)	15.95 A
Bifaciality Factor	80 ± 10%
Maximum System Voltage	1500 V DC
Maximum Series Fuse Rating	30 A
Operating Temperature Range	-40°C to +85°C
Temperature Coefficient of Pmax	-0.28%/°C
Temperature Coefficient of Voc	-0.24%/°C
Temperature Coefficient of Isc	+0.046%/°C
Module Dimensions (H × W × D)	1762 × 1134 × 30 mm
Weight	23.7 kg
Front Glass	2.0 mm semi tempered glass with anti-reflection coating
Rear Glass	2.0 mm semi tempered glass, transparent
Frame Type and Color	Black anodized aluminum alloy frame
Junction Box	IP68 rated, 3 bypass diodes
Cable Cross Section and Length	4 mm², 1200 mm ± length, customizable
Mechanical Test Load Capacity	5400 Pa front / 2400 Pa rear (static test)
Packaging Quantity	36 panels per pallet; 936 panels per 40' HC container

Certifications & Compliance

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

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You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

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Great Experience

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