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Tongwei Solar TWMNH-48HD445W

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SKU PES-SPS-SOL-21057

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Tongwei Solar TWMNH-48HD445W $180.00

Specifications

Power Rating 445W

What is your return policy?

Returns are accepted within 30 days of delivery and require an RMA number. Returns of non-defective items carry a 40% restocking fee per our Refund Policy; defective, damaged-in-transit, or mis-shipped items are exempt. Special-order items are final sale.

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Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

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All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

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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.

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Tongwei TWMNH-48HD445W 445W N-Type Bifacial Dual Glass Solar Panel

Model TWMNH-48HD445W | N-Type Half-Cell TOPCon | 96 Half-Cell TNC | Bifacial Dual Glass | 1500V System Voltage

445 W

Max Power Output

22.3 %

Module Efficiency

N-Type TOPCon

Product Overview

The Tongwei Solar TWMNH-48HD445W N-type bifacial dual glass solar panel delivers high performance in a compact footprint. This 445W module has 22.3% efficiency and is engineered for residential, commercial, and carport or balcony installations. Advanced N-type half-cell technology is used to reduce degradation and maintain strong output over time. The bifacial dual glass design captures light from both sides, boosting yield on reflective surfaces. A slim 30 mm black frame gives a clean architectural look while keeping weight manageable at 23.7 kg. The panel operates up to 1500 V system voltage and integrates easily with modern inverters. Robust IP68 junction boxes and 2 mm tempered glass are used for durability in harsh climates. With linear power protection and low annual degradation, this module offers reliable long term energy production and attractive returns.

Key Benefits

High power in a compact format: 445 W output is delivered from a 1762 x 1134 mm footprint, allowing more energy per square meter. Roof and carport projects can reach target capacity using fewer modules and simpler mounting layouts.

Bifacial energy gains: The dual glass design can harvest rear side light and increase effective output. This feature is ideal above bright ground, light concrete, white membrane roofs, or reflective balcony finishes.

Durable dual glass construction: Semi tempered glass is used on both sides for strength and fire resistance. Better resistance against moisture, potential induced degradation, and micro cracking is provided compared with backsheet modules.

Low degradation and long term yield: N-type cell technology supports a first year degradation of only 1%. The linear rate is limited to about 0.4% per year, helping energy output remain high through year thirty.

Flexible application and easy integration: 1500 V system voltage and a 30 A series fuse rating suit rooftop and ground systems. Standard 1200 mm cables and 4 mm² cross section make installation straightforward for most mounting and inverter layouts.

How It Works

This module converts sunlight into usable electrical power through high efficiency N-type half cells protected between two glass layers. Light that strikes the front surface is absorbed by the 96 TNC cells and converted into direct current. Additional light reflected onto the rear side is also used, increasing total energy yield under suitable site conditions. The generated current flows through low resistance busbars to the junction box, where it is routed into the DC cabling towards a compatible inverter. The inverter then converts this DC power into alternating current for onsite consumption or export. Carefully matched voltage and current ratings allow safe connection into 1500 V systems while staying within the panel’s series fuse limits.

N-type half-cell conversion: Each N-type TOPCon cell uses advanced passivation to limit recombination losses. The half cell layout reduces resistive losses and lowers operating temperature under load. These design choices help maintain strong efficiency even in high irradiance conditions.

Bifacial dual glass light capture: The front side uses 2.0 mm AR coated semi tempered glass to improve light transmission and reduce reflection. The rear side uses 2.0 mm semi tempered glass, allowing reflected and diffuse light to reach the cells from behind. This bifacial effect can significantly raise real world kWh output per panel.

System integration and protection: An IP68 junction box with three bypass diodes manages current flow around shaded cell strings. Standard 4.0 mm² DC cables are pre installed to simplify string wiring to the inverter. When correctly mounted and fused, the module operates safely up to 1500 V DC and withstands heavy snow and wind loads.

Technical Specifications

Brand / Manufacturer	Tongwei Co., Ltd. (TW Solar)
Model Number	TWMNH-48HD445W
Technology	N-type half-cell TOPCon, bifacial dual glass
Cell Type and Count	96 cells (6 × 16) TNC N-type monocrystalline half cells
Maximum Power (Pmax)	445 Wp
Power Output Tolerance	0 ~ +3 %
Module Efficiency (STC)	22.3 %
Voltage at Maximum Power (Vmpp)	29.93 V
Current at Maximum Power (Impp)	14.87 A
Open Circuit Voltage (Voc)	35.55 V
Short Circuit Current (Isc)	15.92 A
Bifaciality Factor	80 ± 10 %
Rear Side Power Gain (example)	Up to 575 Wp and 28.8 % efficiency at 30 % gain
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
Maximum System Voltage	1500 V DC
Maximum Series Fuse Rating	30 A
Panel Dimensions (H × W × D)	1762 × 1134 × 30 mm
Weight	23.7 kg
Front Glass	2.0 mm AR coating semi tempered glass
Rear Glass	2.0 mm semi tempered glass
Frame Type and Color	Anodized aluminum alloy, black frame
Junction Box Rating	IP68, 3 bypass diodes
Cable Cross Section	4.0 mm²
Cable Length	1200 mm (+/-), customizable length available
Maximum Static Test Load	5400 Pa front / 2400 Pa rear
Packing per Pallet	36 pieces per pallet
Quantity per 40' HC Container	936 pieces

Certifications & Compliance

Certifications: IEC 61215, IEC 61730, IEC TS 62804, IEC 61701, IEC 62716, IEC 60068-2-68, EC62941:2019, ISO9001:2015, ISO14001:2015, ISO45001:2018, ISO50001:2018
Inverter Compatibility: Designed for use with modern 1500 V string and central inverters that support N-type bifacial modules and standard MC4 compatible DC connections.
Environmental: Certified for resistance to salt mist, ammonia, and harsh environmental conditions as defined in IEC 61701 and IEC 62716, supporting coastal and agricultural installations.
Warranty: 15-year material and workmanship warranty with a 30-year linear power output warranty, including 1% first year degradation and a maximum 0.4% annual degradation thereafter, guaranteeing 99% power in year one and at least 87.4% by 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-48HD445W 445W N-Type Bifacial Dual Glass Solar Panel

Model TWMNH-48HD445W | N-Type Half-Cell TOPCon | 96 Half-Cell TNC | Bifacial Dual Glass | 1500V System Voltage

445 W

Max Power Output

22.3 %

Module Efficiency

N-Type TOPCon

Product Overview

Key Benefits

How It Works

Technical Specifications

Brand / Manufacturer	Tongwei Co., Ltd. (TW Solar)
Model Number	TWMNH-48HD445W
Technology	N-type half-cell TOPCon, bifacial dual glass
Cell Type and Count	96 cells (6 × 16) TNC N-type monocrystalline half cells
Maximum Power (Pmax)	445 Wp
Power Output Tolerance	0 ~ +3 %
Module Efficiency (STC)	22.3 %
Voltage at Maximum Power (Vmpp)	29.93 V
Current at Maximum Power (Impp)	14.87 A
Open Circuit Voltage (Voc)	35.55 V
Short Circuit Current (Isc)	15.92 A
Bifaciality Factor	80 ± 10 %
Rear Side Power Gain (example)	Up to 575 Wp and 28.8 % efficiency at 30 % gain
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
Maximum System Voltage	1500 V DC
Maximum Series Fuse Rating	30 A
Panel Dimensions (H × W × D)	1762 × 1134 × 30 mm
Weight	23.7 kg
Front Glass	2.0 mm AR coating semi tempered glass
Rear Glass	2.0 mm semi tempered glass
Frame Type and Color	Anodized aluminum alloy, black frame
Junction Box Rating	IP68, 3 bypass diodes
Cable Cross Section	4.0 mm²
Cable Length	1200 mm (+/-), customizable length available
Maximum Static Test Load	5400 Pa front / 2400 Pa rear
Packing per Pallet	36 pieces per pallet
Quantity per 40' HC Container	936 pieces

Certifications & Compliance

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing

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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!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.