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HT Solar 425

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HT Solar HT54-18X(N) 425–450W N-Type TOPCon Bifacial Solar Panel

Model HT54-18X(N) | N-Type TOPCon | 108 Half-Cell Mono | Bifacial | 1500V System Voltage

450 W

Max Power Output

23.0 %

Module Efficiency

108

N-Type TOPCon

Product Overview

The HT Solar 425 TOPCon bifacial solar panel range is engineered to deliver high power density and long term reliability for residential, commercial, and light industrial projects. This advanced N Type TOPCon module family, spanning 430 to 450 watts, combines efficient monocrystalline half cut cells with bifacial generation to maximise yield from the same roof area. Panel efficiencies reach up to 23.0 percent, so more energy can be produced even where space is limited. A robust design, optimised electrical performance, and extended warranty structure make this panel a compelling choice for customers seeking dependable low cost solar energy over several decades. Whether used on rooftops or ground mounted arrays, the HT Solar 425 series offers a balanced mix of performance, durability, and value.

Key Benefits

High power density for limited roof space: Module power up to 450 watts and efficiency up to 23.0 percent help maximise energy production where roof or ground space is constrained.

Advanced N Type TOPCon performance: N Type TOPCon cell technology offers lower degradation, strong low light response, and excellent temperature behaviour for stable long term output.

Bifacial energy gain: The bifacial design allows light capture from the rear side on reflective surfaces, increasing total energy yield without enlarging the array footprint.

Built for demanding environments: The module is tested for high mechanical loads, wide operating temperatures from minus 40 to plus 85 degrees Celsius, and harsh outdoor conditions.

Long term warranty protection: A 30 year power warranty with only 0.42 percent annual degradation and extended product cover gives confidence in lifetime energy forecasts.

How It Works

Each HT Solar HT54 18X(N) TOPCon bifacial solar panel converts sunlight into usable DC electricity through high efficiency monocrystalline N Type cells. These precision cut half cells are wired in series and parallel strings to reach the rated power class while controlling resistive losses and heat. Under standard test conditions, the module can deliver up to 450 watts, while under normal operating temperature its working power sits in the low 300 watt range. The integrated junction box and MC4 connectors safely route the DC output to inverters or optimisers, where it is converted to AC for on site loads or export to the grid. Over time, slow and controlled performance degradation ensures predictable generation for energy planning and financial modelling.

N-Type TOPCon cell architecture: N Type TOPCon cells use a passivated contact structure that reduces recombination losses at the rear of the cell. This design supports higher conversion efficiency and improved performance in high irradiance and high temperature conditions compared with many standard PERC cells.

Half cut monocrystalline layout: The module uses 108 half cut monocrystalline cells arranged to limit internal current and lower resistive losses. This configuration enhances shade tolerance across the panel surface and supports better heat dissipation, which helps maintain performance over long operating days.

Bifacial power generation: The bifacial construction enables the rear side of the module to harvest reflected light from bright ground, roof membranes, or nearby surfaces. Additional rear side energy contributes to higher overall kilowatt hour yield per installed kilowatt, especially on light coloured or elevated mounting structures.

Technical Specifications

Brand / Manufacturer	Tangshan Haitai New Energy Technology Co., Ltd. (HT Solar)
Model Series	HT54-18X(N) PANDA
Cell Technology	Monocrystalline N-Type TOPCon, bifacial
Cell Size	182 × 91 mm
Number of Cells	108 half cut cells
Power Range (STC)	430 Wp / 435 Wp / 440 Wp / 445 Wp / 450 Wp
Maximum Power (Pmax) at STC	450 Wp (series maximum), 425 Wp named class reference
Module Efficiency (STC)	From 21.76 % up to 23.0 % depending on power class
Voltage at Pmax (Vmpp, STC)	Around 31.8 V to 32.5 V depending on configuration
Current at Pmax (Impp, STC)	Up to 13.85 A on the highest power variant
Open Circuit Voltage (Voc, STC)	Around 38.3 V to 38.8 V depending on power class
Short Circuit Current (Isc, STC)	Up to 14.55 A depending on power class
Maximum Power (Pmax, NMOT)	Around 320 Wp to 342 Wp depending on rating
Voltage at Pmax (Vmpp, NMOT)	About 29.95 V to 31.2 V depending on model
Current at Pmax (Impp, NMOT)	From 10.69 A to 10.96 A depending on power class
Open Circuit Voltage (Voc, NMOT)	Around 36.4 V to 37.2 V depending on model
Short Circuit Current (Isc, NMOT)	Approximately 11.34 A to 11.73 A depending on rating
Nominal Module Operating Temperature (NMOT)	41 ± 3 °C to 43 ± 2 °C
Operating Temperature Range	-40 °C to +85 °C
Temperature Coefficient of Pmax	-0.30 % / °C to -0.31 % / °C
Temperature Coefficient of Voc	-0.25 % / °C
Temperature Coefficient of Isc	+0.046 % / °C
Maximum System Voltage	1500 V DC (IEC)
Maximum Series Fuse Rating	30 A
Module Dimensions (H × W × D)	1722 × 1134 × 30 mm
Weight per Module	24 kg
Front Glass	Single glass, 2 mm thickness
Frame Type and Colour	Anodized aluminium frame, black finish
Junction Box Protection Class	IP68 rated junction box
Connector Type	MC4 compatible connectors
Cable Cross Section	4 mm² solar cable
Seller Country of Origin	China

Certifications & Compliance

Certifications: IEC 61215 and IEC 61730 compliance, plus ISO 9001, ISO 14001, ISO 45001, and SA8000 quality and sustainability systems as outlined in the manufacturer datasheet.
Inverter Compatibility: Designed for use with modern string and hybrid inverters supporting 1500 V DC systems and MC4 input connectors. Always confirm final design with the inverter manufacturer and installer for voltage window and current limits.
Environmental: High mechanical load resistance up to 5400 Pa positive and 2400 Pa negative, hail impact tested with 25 mm hailstones at 23 m/s, and engineered for outdoor operation from minus 40 to plus 85 degrees Celsius.
Warranty: 12 year to 30 year product warranty structure depending on installation type, plus 30 year power output warranty with a low 0.42 percent annual degradation rate, ending at 87.4 percent of initial power after 30 years under standard conditions.

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?

HT Solar HT54-18X(N) 425–450W N-Type TOPCon Bifacial Solar Panel

Model HT54-18X(N) | N-Type TOPCon | 108 Half-Cell Mono | Bifacial | 1500V System Voltage

450 W

Max Power Output

23.0 %

Module Efficiency

108

N-Type TOPCon

Product Overview

Key Benefits

High power density for limited roof space: Module power up to 450 watts and efficiency up to 23.0 percent help maximise energy production where roof or ground space is constrained.

Advanced N Type TOPCon performance: N Type TOPCon cell technology offers lower degradation, strong low light response, and excellent temperature behaviour for stable long term output.

Bifacial energy gain: The bifacial design allows light capture from the rear side on reflective surfaces, increasing total energy yield without enlarging the array footprint.

Built for demanding environments: The module is tested for high mechanical loads, wide operating temperatures from minus 40 to plus 85 degrees Celsius, and harsh outdoor conditions.

Long term warranty protection: A 30 year power warranty with only 0.42 percent annual degradation and extended product cover gives confidence in lifetime energy forecasts.

How It Works

Technical Specifications

Brand / Manufacturer	Tangshan Haitai New Energy Technology Co., Ltd. (HT Solar)
Model Series	HT54-18X(N) PANDA
Cell Technology	Monocrystalline N-Type TOPCon, bifacial
Cell Size	182 × 91 mm
Number of Cells	108 half cut cells
Power Range (STC)	430 Wp / 435 Wp / 440 Wp / 445 Wp / 450 Wp
Maximum Power (Pmax) at STC	450 Wp (series maximum), 425 Wp named class reference
Module Efficiency (STC)	From 21.76 % up to 23.0 % depending on power class
Voltage at Pmax (Vmpp, STC)	Around 31.8 V to 32.5 V depending on configuration
Current at Pmax (Impp, STC)	Up to 13.85 A on the highest power variant
Open Circuit Voltage (Voc, STC)	Around 38.3 V to 38.8 V depending on power class
Short Circuit Current (Isc, STC)	Up to 14.55 A depending on power class
Maximum Power (Pmax, NMOT)	Around 320 Wp to 342 Wp depending on rating
Voltage at Pmax (Vmpp, NMOT)	About 29.95 V to 31.2 V depending on model
Current at Pmax (Impp, NMOT)	From 10.69 A to 10.96 A depending on power class
Open Circuit Voltage (Voc, NMOT)	Around 36.4 V to 37.2 V depending on model
Short Circuit Current (Isc, NMOT)	Approximately 11.34 A to 11.73 A depending on rating
Nominal Module Operating Temperature (NMOT)	41 ± 3 °C to 43 ± 2 °C
Operating Temperature Range	-40 °C to +85 °C
Temperature Coefficient of Pmax	-0.30 % / °C to -0.31 % / °C
Temperature Coefficient of Voc	-0.25 % / °C
Temperature Coefficient of Isc	+0.046 % / °C
Maximum System Voltage	1500 V DC (IEC)
Maximum Series Fuse Rating	30 A
Module Dimensions (H × W × D)	1722 × 1134 × 30 mm
Weight per Module	24 kg
Front Glass	Single glass, 2 mm thickness
Frame Type and Colour	Anodized aluminium frame, black finish
Junction Box Protection Class	IP68 rated junction box
Connector Type	MC4 compatible connectors
Cable Cross Section	4 mm² solar cable
Seller Country of Origin	China

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

Best Tech Support

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

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.

Troy P

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

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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