HD Solar HD-66HPH-405M
HD Solar HD-66HPH-405M
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SKU  PES-SPS-SOL-7546

HD Solar HD-66HPH-405M

HD Solar HD-66HPH-405M

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In Stock

Get yours today!

truck
9+ sold

In the last 7 days

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Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

In High Demand! Order Now To Secure Your Items

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Specifications

Length 405 m

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What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

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.

How long will it take to receive my order?

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.

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?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

HD Solar HD-66HPH-405M 405–425W Polycrystalline Monofacial Solar Panel

Model HD-66HPH-405M | Polycrystalline | 132 Half-Cell Polycrystalline Cells | Monofacial | 1500V System Voltage

405–425W
Max Power Output
20.3–21.3%
Module Efficiency
132
N-Type TOPCon

Product Overview

The HD Solar HD-66HPH-405M polycrystalline solar panel delivers reliable power between 405W and 425W for residential and commercial arrays. This high‑performance module is engineered to balance strong output with robust construction for long term outdoor use. With panel efficiency ranging from 20.3% to 21.3%, it helps maximise energy harvest from limited roof or ground space. The 132 half‑cell layout supports better shade tolerance and stable performance across diverse installation conditions. A positive power tolerance of 0 to +3% ensures the panel will meet or exceed its rated output under standard test conditions. The module uses tempered glass, an anodized aluminium frame, and an IP68 junction box to protect critical components from weather and dust. At 22 kg and 1924x1038x35 mm, the panel offers a practical balance between size, weight, and ease of installation. It is well suited for grid‑tied systems, small commercial projects, and distributed generation applications where dependable production is essential. Manufacturing is carried out by Jiangsu Hongde Technology Development Co., Ltd. in China, supporting consistent quality and supply.

Key Benefits

High power density for constrained roofs: Power ratings between 405W and 425W help achieve higher system capacity on limited surfaces. This allows installers to reach project energy targets with fewer modules.

Stable efficiency across the range: Module efficiency from 20.3% to 21.3% supports strong production, even in smaller arrays. This efficiency range reduces levelised energy costs over the system lifetime.

Reliable operation in harsh climates: An operating temperature range from -40°C to 85°C enables use in hot and cold regions. The module is designed to maintain output under standard environmental stress.

Robust mechanical design: Tempered glass, a 3.2 mm front layer, and anodized aluminium framing provide strong impact resistance. The IP68 junction box and 4 mm² cables support secure long term connections.

Flexible integration with modern systems: A 1500V maximum system voltage allows use with current generation inverters and mounting layouts. Designers can configure longer strings and reduce balance of system costs.

How It Works

The HD Solar HD-66HPH-405M panel converts sunlight into usable direct current electricity through its polycrystalline silicon cells. When solar irradiance reaches the 132 half‑cut cells, photons are absorbed and free electrons are generated within the semiconductor material. These electrons flow through the busbars and interconnections, producing current that exits through the junction box and factory fitted cables. At the maximum power point, the module delivers up to 405W with a Vmpp of 37.8V and an Impp of 10.72A under standard test conditions. Careful cell layout and encapsulation help minimise losses from reflection, resistance, and partial shading. Installed in a properly designed system, the panel connects to a compatible inverter, which converts the DC power into AC electricity for onsite use or export to the grid. The 1500V system rating allows longer series strings, which supports efficient system design and reduced cabling. Over time, consistent construction standards and tested temperature coefficients help maintain output stability in real operating environments.

Photovoltaic energy conversion: Polycrystalline silicon cells capture sunlight and generate a flow of electrons within the module. The cell matrix is wired in series and parallel to reach the required voltage and current levels.

Maximum power point performance: The module is designed around a maximum power point of 37.8V and 10.72A at 405W. Inverter maximum power point tracking continuously adjusts operating conditions to keep the panel near this point.

Thermal and environmental resilience: Temperature coefficients of -0.34%/°C for Pmax and -0.265%/°C for Voc limit output losses in heat. The wide operating temperature range and IP68 junction box help maintain safety and reliability outdoors.

Technical Specifications

Module Type HD-66HPH-405M polycrystalline solar panel
Power Range 405 Wp to 425 Wp
Power Tolerance 0 to +3 %
Maximum Power (Pmax) – Main Listing 405 Wp at STC
Voltage at Maximum Power (Vmpp) – Main Listing 37.8 V
Current at Maximum Power (Impp) – Main Listing 10.72 A
Open Circuit Voltage (Voc) – Main Listing 45 V
Short Circuit Current (Isc) – Main Listing 11.5 A
Panel Efficiency Range 20.3 % to 21.3 %
Secondary Pmax Value 304.2 Wp (as listed in source specification)
Secondary Vmpp Value 35.19 V
Secondary Impp Value 8.65 A
Secondary Voc Value 42.32 V
Secondary Isc Value 9.33 A
Nominal Module Temperature 45 ± 2 °C
Operating Temperature Range -40 °C to 85 °C
Temperature Coefficient of Pmax -0.34 % / °C
Temperature Coefficient of Voc -0.265 % / °C
Temperature Coefficient of Isc 0.05 % / °C
Maximum System Voltage 1500 V
Series Fuse Rating 20 A
Panel Dimensions (H × W × D) 1924 × 1038 × 35 mm
Weight 22 kg
Cell Count and Type 132 polycrystalline half cells
Glass Type and Thickness 3.2 mm tempered glass
Frame Material Anodized aluminium frame
Junction Box and Diodes IP68 junction box with 3 bypass diodes
Cable Cross Section and Length 4 mm² cables, 1200 mm length
Manufacturer Jiangsu Hongde Technology Development Co., Ltd. (China)

Certifications & Compliance

Certifications: Certification details are typically provided on the official product datasheet or label.
Inverter Compatibility: Compatible with most modern 1500V string and central inverters when correctly configured in strings.
Environmental: Designed for outdoor installation with IP68 junction box and wide operating temperature range.
Warranty: Warranty terms are defined by the manufacturer and can be confirmed at the time of purchase.

Documentation

The manufacturer’s PDF datasheet is referenced in the original product description and can be requested from the supplier.

● Available | Contact us for lead time and pricing

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

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.

How long will it take to receive my order?

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.

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?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

HD Solar HD-66HPH-405M 405–425W Polycrystalline Monofacial Solar Panel

Model HD-66HPH-405M | Polycrystalline | 132 Half-Cell Polycrystalline Cells | Monofacial | 1500V System Voltage

405–425W
Max Power Output
20.3–21.3%
Module Efficiency
132
N-Type TOPCon

Product Overview

The HD Solar HD-66HPH-405M polycrystalline solar panel delivers reliable power between 405W and 425W for residential and commercial arrays. This high‑performance module is engineered to balance strong output with robust construction for long term outdoor use. With panel efficiency ranging from 20.3% to 21.3%, it helps maximise energy harvest from limited roof or ground space. The 132 half‑cell layout supports better shade tolerance and stable performance across diverse installation conditions. A positive power tolerance of 0 to +3% ensures the panel will meet or exceed its rated output under standard test conditions. The module uses tempered glass, an anodized aluminium frame, and an IP68 junction box to protect critical components from weather and dust. At 22 kg and 1924x1038x35 mm, the panel offers a practical balance between size, weight, and ease of installation. It is well suited for grid‑tied systems, small commercial projects, and distributed generation applications where dependable production is essential. Manufacturing is carried out by Jiangsu Hongde Technology Development Co., Ltd. in China, supporting consistent quality and supply.

Key Benefits

High power density for constrained roofs: Power ratings between 405W and 425W help achieve higher system capacity on limited surfaces. This allows installers to reach project energy targets with fewer modules.

Stable efficiency across the range: Module efficiency from 20.3% to 21.3% supports strong production, even in smaller arrays. This efficiency range reduces levelised energy costs over the system lifetime.

Reliable operation in harsh climates: An operating temperature range from -40°C to 85°C enables use in hot and cold regions. The module is designed to maintain output under standard environmental stress.

Robust mechanical design: Tempered glass, a 3.2 mm front layer, and anodized aluminium framing provide strong impact resistance. The IP68 junction box and 4 mm² cables support secure long term connections.

Flexible integration with modern systems: A 1500V maximum system voltage allows use with current generation inverters and mounting layouts. Designers can configure longer strings and reduce balance of system costs.

How It Works

The HD Solar HD-66HPH-405M panel converts sunlight into usable direct current electricity through its polycrystalline silicon cells. When solar irradiance reaches the 132 half‑cut cells, photons are absorbed and free electrons are generated within the semiconductor material. These electrons flow through the busbars and interconnections, producing current that exits through the junction box and factory fitted cables. At the maximum power point, the module delivers up to 405W with a Vmpp of 37.8V and an Impp of 10.72A under standard test conditions. Careful cell layout and encapsulation help minimise losses from reflection, resistance, and partial shading. Installed in a properly designed system, the panel connects to a compatible inverter, which converts the DC power into AC electricity for onsite use or export to the grid. The 1500V system rating allows longer series strings, which supports efficient system design and reduced cabling. Over time, consistent construction standards and tested temperature coefficients help maintain output stability in real operating environments.

Photovoltaic energy conversion: Polycrystalline silicon cells capture sunlight and generate a flow of electrons within the module. The cell matrix is wired in series and parallel to reach the required voltage and current levels.

Maximum power point performance: The module is designed around a maximum power point of 37.8V and 10.72A at 405W. Inverter maximum power point tracking continuously adjusts operating conditions to keep the panel near this point.

Thermal and environmental resilience: Temperature coefficients of -0.34%/°C for Pmax and -0.265%/°C for Voc limit output losses in heat. The wide operating temperature range and IP68 junction box help maintain safety and reliability outdoors.

Technical Specifications

Module Type HD-66HPH-405M polycrystalline solar panel
Power Range 405 Wp to 425 Wp
Power Tolerance 0 to +3 %
Maximum Power (Pmax) – Main Listing 405 Wp at STC
Voltage at Maximum Power (Vmpp) – Main Listing 37.8 V
Current at Maximum Power (Impp) – Main Listing 10.72 A
Open Circuit Voltage (Voc) – Main Listing 45 V
Short Circuit Current (Isc) – Main Listing 11.5 A
Panel Efficiency Range 20.3 % to 21.3 %
Secondary Pmax Value 304.2 Wp (as listed in source specification)
Secondary Vmpp Value 35.19 V
Secondary Impp Value 8.65 A
Secondary Voc Value 42.32 V
Secondary Isc Value 9.33 A
Nominal Module Temperature 45 ± 2 °C
Operating Temperature Range -40 °C to 85 °C
Temperature Coefficient of Pmax -0.34 % / °C
Temperature Coefficient of Voc -0.265 % / °C
Temperature Coefficient of Isc 0.05 % / °C
Maximum System Voltage 1500 V
Series Fuse Rating 20 A
Panel Dimensions (H × W × D) 1924 × 1038 × 35 mm
Weight 22 kg
Cell Count and Type 132 polycrystalline half cells
Glass Type and Thickness 3.2 mm tempered glass
Frame Material Anodized aluminium frame
Junction Box and Diodes IP68 junction box with 3 bypass diodes
Cable Cross Section and Length 4 mm² cables, 1200 mm length
Manufacturer Jiangsu Hongde Technology Development Co., Ltd. (China)

Certifications & Compliance

Certifications: Certification details are typically provided on the official product datasheet or label.
Inverter Compatibility: Compatible with most modern 1500V string and central inverters when correctly configured in strings.
Environmental: Designed for outdoor installation with IP68 junction box and wide operating temperature range.
Warranty: Warranty terms are defined by the manufacturer and can be confirmed at the time of purchase.

Documentation

The manufacturer’s PDF datasheet is referenced in the original product description and can be requested from the supplier.

● 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!

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.

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!

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.

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Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Be Smart, Buy From an Authorized Dealer

When you choose Portlandia Electric Supply, you’re buying real products from a trusted company with established supplier relationships. Enjoy peace of mind with 100% manufacturer warranty coverage and lifetime customer support. In an age where online shopping is fraught with risks, it’s crucial to avoid fly-by-night websites that skirt regulations. Shop with confidence, knowing you’re getting genuine quality and reliable service.

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