HD Solar HD-66HPH-420M
HD Solar HD-66HPH-420M
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SKU  PES-SPS-SOL-7549

HD Solar HD-66HPH-420M

HD Solar HD-66HPH-420M

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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 420 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-420M 405–425W Polycrystalline Half-Cell Solar Panel

Model HD-66HPH-420M | Polycrystalline Half-Cell | 132 Half-Cell Polycrystalline | Monofacial | 1500V System Voltage

425 Wp
Max Power Output
21.3%
Module Efficiency
132
N-Type TOPCon

Product Overview

The HD Solar HD-66HPH-420M polycrystalline solar panel delivers reliable 405–425 watt performance in a compact footprint. This high-efficiency module is engineered around 132 half-cut polycrystalline cells, offering up to 21.3% panel efficiency under standard test conditions. A maximum system voltage of 1500V enables flexible string design for commercial and residential arrays. The module is built with 3.2 mm tempered glass, an anodized aluminium frame, and a durable IP68 junction box. Each panel is designed for long-term outdoor exposure, delivering stable energy generation in challenging climates. With a temperature coefficient of -0.34%/°C for Pmax, output remains consistent even as cell temperature rises. This model is manufactured by Jiangsu Hongde Technology Development Co., Ltd in China, ensuring industrial-grade quality control and repeatable performance. The HD-66HPH-420M suits grid-tied and off-grid applications where dependable power density is required on limited roof or ground space.

Key Benefits

High power density in a standard footprint: The 405–425 Wp output range helps maximize kWh production per module on roofs and ground mounts. This allows smaller arrays to meet demanding load requirements.

Efficient polycrystalline half-cell design: The 132 half-cut cells reduce resistive losses and improve shade tolerance compared with full-cell layouts. Energy harvest is optimized during real-world operating conditions.

Robust construction for harsh environments: Tempered glass, anodized aluminium frame, and IP68 junction box increase resistance to moisture and dust. Long-term durability is supported in a wide temperature range from -40 to 85°C.

Stable performance at elevated temperatures: Low temperature coefficients for Pmax, Voc, and Isc help preserve output on hot days. System designers can predict seasonal yield with greater confidence.

Ideal for residential and small commercial projects: The 1500V system rating supports longer strings and lower balance-of-system costs. The 22 kg weight and 1924x1038 mm dimensions simplify handling and installation.

How It Works

This HD Solar HD-66HPH-420M polycrystalline half-cell module converts sunlight into direct current electricity through its 132 interconnected cells. Incident light strikes the polycrystalline silicon wafers and frees electrons within the semiconductor material. An internal electric field drives these electrons into an external circuit, creating usable current for inverters and DC loads. At the module level, maximum power is delivered at 38.4 V and 10.94 A for the higher output configuration. The panel is wired for optimal current flow, allowing the two half-cell sections to operate efficiently while limiting resistive losses. A weather-sealed junction box routes the generated DC power through 4 mm² solar cable to the system inverter or charge controller. Throughout operation, the panel continues to produce energy within its specified temperature range, while temperature coefficients guide expected output changes.

Photovoltaic energy conversion: Polycrystalline silicon cells absorb solar radiation and generate electron flow inside each wafer. The 0 to +3% power tolerance ensures that real output meets or exceeds the rated power under test conditions.

Half-cell string configuration: The 132 half-cut cells are divided into parallel strings that reduce current per path. This lowers thermal losses and enhances performance during partial shading across the module surface.

Power delivery to your system: Three bypass diodes in the junction box protect against hot spots when cells are shaded. Generated DC power is transferred via 1200 mm cables to an inverter, which then supplies AC energy to on-site loads or the grid.

Technical Specifications

Product Type Polycrystalline solar panel
Model Number HD-66HPH-420M
Manufacturer / Seller Jiangsu Hongde Technology Development Co., Ltd. (China)
Power Range 405 – 425 Wp
Maximum Power (Pmax) – High Output 420 Wp
Voltage at Maximum Power (Vmpp) – High Output 38.4 V
Current at Maximum Power (Impp) – High Output 10.94 A
Open Circuit Voltage (Voc) – High Output 45.6 V
Short Circuit Current (Isc) – High Output 11.73 A
Panel Efficiency Range 20.3 – 21.3 %
Typical Panel Efficiency (Listed) 21 %
Secondary Maximum Power (Pmax) 315.5 Wp
Voltage at Maximum Power (Vmpp) – Secondary 35.74 V
Current at Maximum Power (Impp) – Secondary 8.83 A
Open Circuit Voltage (Voc) – Secondary 42.88 V
Short Circuit Current (Isc) – Secondary 9.52 A
Power Tolerance 0 ~ +3 %
Nominal Operating Temperature 45 ± 2 °C
Operating Temperature Range -40 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 DC
Series Fuse Rating 20 A
Panel Dimensions (H x W x D) 1924 x 1038 x 35 mm
Weight 22 kg
Cell Count and Type 132 half-cut polycrystalline cells
Glass Type and Thickness 3.2 mm tempered glass
Frame Material Anodized aluminium frame
Junction Box 3-diode junction box, protection class IP68
Cable Cross-Section 4 mm² solar cable
Cable Length 1200 mm

Certifications & Compliance

Certifications: Industry-standard IEC and safety certifications are typically applied to this class of module. Please confirm exact certificates with the supplier before final design use.
Inverter Compatibility: Compatible with most modern string, hybrid, and central inverters within the 1500V DC design window. Always verify inverter current and voltage limits during system engineering.
Environmental: Designed for outdoor installation with IP68 junction box protection and a -40 to 85°C operating range. Suitable for a wide variety of climates when mounted according to local standards.
Warranty: Standard product and performance warranties are provided by Jiangsu Hongde Technology Development Co., Ltd. Please consult your distributor for detailed warranty terms and coverage period.

● 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-420M 405–425W Polycrystalline Half-Cell Solar Panel

Model HD-66HPH-420M | Polycrystalline Half-Cell | 132 Half-Cell Polycrystalline | Monofacial | 1500V System Voltage

425 Wp
Max Power Output
21.3%
Module Efficiency
132
N-Type TOPCon

Product Overview

The HD Solar HD-66HPH-420M polycrystalline solar panel delivers reliable 405–425 watt performance in a compact footprint. This high-efficiency module is engineered around 132 half-cut polycrystalline cells, offering up to 21.3% panel efficiency under standard test conditions. A maximum system voltage of 1500V enables flexible string design for commercial and residential arrays. The module is built with 3.2 mm tempered glass, an anodized aluminium frame, and a durable IP68 junction box. Each panel is designed for long-term outdoor exposure, delivering stable energy generation in challenging climates. With a temperature coefficient of -0.34%/°C for Pmax, output remains consistent even as cell temperature rises. This model is manufactured by Jiangsu Hongde Technology Development Co., Ltd in China, ensuring industrial-grade quality control and repeatable performance. The HD-66HPH-420M suits grid-tied and off-grid applications where dependable power density is required on limited roof or ground space.

Key Benefits

High power density in a standard footprint: The 405–425 Wp output range helps maximize kWh production per module on roofs and ground mounts. This allows smaller arrays to meet demanding load requirements.

Efficient polycrystalline half-cell design: The 132 half-cut cells reduce resistive losses and improve shade tolerance compared with full-cell layouts. Energy harvest is optimized during real-world operating conditions.

Robust construction for harsh environments: Tempered glass, anodized aluminium frame, and IP68 junction box increase resistance to moisture and dust. Long-term durability is supported in a wide temperature range from -40 to 85°C.

Stable performance at elevated temperatures: Low temperature coefficients for Pmax, Voc, and Isc help preserve output on hot days. System designers can predict seasonal yield with greater confidence.

Ideal for residential and small commercial projects: The 1500V system rating supports longer strings and lower balance-of-system costs. The 22 kg weight and 1924x1038 mm dimensions simplify handling and installation.

How It Works

This HD Solar HD-66HPH-420M polycrystalline half-cell module converts sunlight into direct current electricity through its 132 interconnected cells. Incident light strikes the polycrystalline silicon wafers and frees electrons within the semiconductor material. An internal electric field drives these electrons into an external circuit, creating usable current for inverters and DC loads. At the module level, maximum power is delivered at 38.4 V and 10.94 A for the higher output configuration. The panel is wired for optimal current flow, allowing the two half-cell sections to operate efficiently while limiting resistive losses. A weather-sealed junction box routes the generated DC power through 4 mm² solar cable to the system inverter or charge controller. Throughout operation, the panel continues to produce energy within its specified temperature range, while temperature coefficients guide expected output changes.

Photovoltaic energy conversion: Polycrystalline silicon cells absorb solar radiation and generate electron flow inside each wafer. The 0 to +3% power tolerance ensures that real output meets or exceeds the rated power under test conditions.

Half-cell string configuration: The 132 half-cut cells are divided into parallel strings that reduce current per path. This lowers thermal losses and enhances performance during partial shading across the module surface.

Power delivery to your system: Three bypass diodes in the junction box protect against hot spots when cells are shaded. Generated DC power is transferred via 1200 mm cables to an inverter, which then supplies AC energy to on-site loads or the grid.

Technical Specifications

Product Type Polycrystalline solar panel
Model Number HD-66HPH-420M
Manufacturer / Seller Jiangsu Hongde Technology Development Co., Ltd. (China)
Power Range 405 – 425 Wp
Maximum Power (Pmax) – High Output 420 Wp
Voltage at Maximum Power (Vmpp) – High Output 38.4 V
Current at Maximum Power (Impp) – High Output 10.94 A
Open Circuit Voltage (Voc) – High Output 45.6 V
Short Circuit Current (Isc) – High Output 11.73 A
Panel Efficiency Range 20.3 – 21.3 %
Typical Panel Efficiency (Listed) 21 %
Secondary Maximum Power (Pmax) 315.5 Wp
Voltage at Maximum Power (Vmpp) – Secondary 35.74 V
Current at Maximum Power (Impp) – Secondary 8.83 A
Open Circuit Voltage (Voc) – Secondary 42.88 V
Short Circuit Current (Isc) – Secondary 9.52 A
Power Tolerance 0 ~ +3 %
Nominal Operating Temperature 45 ± 2 °C
Operating Temperature Range -40 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 DC
Series Fuse Rating 20 A
Panel Dimensions (H x W x D) 1924 x 1038 x 35 mm
Weight 22 kg
Cell Count and Type 132 half-cut polycrystalline cells
Glass Type and Thickness 3.2 mm tempered glass
Frame Material Anodized aluminium frame
Junction Box 3-diode junction box, protection class IP68
Cable Cross-Section 4 mm² solar cable
Cable Length 1200 mm

Certifications & Compliance

Certifications: Industry-standard IEC and safety certifications are typically applied to this class of module. Please confirm exact certificates with the supplier before final design use.
Inverter Compatibility: Compatible with most modern string, hybrid, and central inverters within the 1500V DC design window. Always verify inverter current and voltage limits during system engineering.
Environmental: Designed for outdoor installation with IP68 junction box protection and a -40 to 85°C operating range. Suitable for a wide variety of climates when mounted according to local standards.
Warranty: Standard product and performance warranties are provided by Jiangsu Hongde Technology Development Co., Ltd. Please consult your distributor for detailed warranty terms and coverage period.

● 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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