Guorun Energy 520
Guorun Energy 520
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Guorun Energy 520

Guorun Energy 520

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery

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In Stock

Get yours today!

truck
9+ sold

In the last 7 days

truck
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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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.

Guorun Energy 520 HJT Bifacial Monocrystalline Solar Panel

Model 520 | Bifacial HJT Monocrystalline | 108 Cells | Bifacial | 1500 V System Voltage

520 Wp
Max Power Output
23.4 %
Module Efficiency
108
HJT Bifacial Cells

Product Overview

The Guorun Energy 520 HJT Bifacial Monocrystalline Solar Panel is designed for high power density and long term reliability. This advanced module uses heterojunction bifacial technology to capture sunlight from both the front and rear sides. Its rated maximum power of 520 Wp makes it ideal for commercial rooftops, ground mount systems and high performance residential arrays. Panel efficiency reaches up to 23.4 percent, so more energy is produced from every square meter of roof or land. The module operates within a wide temperature range from minus 40 to 85 degrees Celsius. A durable anodized aluminium frame and anti reflection coated glass improve strength and light capture. The Guorun Energy 520 panel is suited to modern 1500 volt systems and is engineered for low annual degradation. With a 15 year product warranty and 30 year power warranty, this panel supports stable long term energy yield. It offers an attractive balance of efficiency, reliability and lifecycle energy production for demanding projects.

Key Benefits

High power density: A maximum output of 520 Wp allows more generation from limited roof or ground area.

Excellent module efficiency: Efficiency up to 23.4 percent reduces balance of system costs and increases project yield.

Bifacial HJT technology: Bifacial heterojunction cells harvest light from both sides, boosting energy in high albedo sites.

Robust thermal performance: A low temperature coefficient of Pmax at -0.24 percent per degree maintains power on hot days.

Long life warranty coverage: A 15 year product warranty and 30 year power warranty support long term investment confidence.

Durable construction: Anti reflection coated glass and an anodized aluminium frame provide mechanical strength and protection.

How It Works

This Guorun Energy 520 HJT Bifacial Monocrystalline Solar Panel converts sunlight into usable direct current power. Its monocrystalline heterojunction cells are arranged in a 108 cell layout that optimises current flow and voltage. When sunlight strikes the front glass, photons are absorbed by the silicon layers in each cell. This energy frees electrons and creates an electric field that drives current through the conductors. Bifacial construction also allows the rear side to capture reflected and diffuse light from the environment. The combined effect increases total daily energy yield, especially above bright surfaces such as concrete or light gravel. Generated current flows through the junction box and MC4 connectors to the system wiring. From there, a compatible inverter converts the direct current into grid ready alternating current for site loads or export. The panel operates safely within its rated voltage and temperature range when installed to industry best practices.

Bifacial light harvesting: Front and rear cell surfaces collect direct, reflected and scattered light during the day. This dual side collection increases kilowatt hour output compared with similar monofacial modules.

High efficiency HJT cell design: Heterojunction cells combine crystalline silicon with thin amorphous layers to reduce recombination losses. Lower losses help the panel maintain strong performance under high temperatures and low light conditions.

Optimised electrical performance: At maximum power, the module delivers 34.88 volts and 14.91 amps for a 520 Wp output. Its low power tolerance of 0 to plus 1 percent ensures reliable nameplate performance in the field.

Technical Specifications

Brand Guorun Energy Group Co., Ltd.
Country of Origin China
Cell Technology Bifacial HJT monocrystalline
Cell Count 108 cells
Technology Type Bifacial monocrystalline module
Power Range 505 to 525 Wp
Maximum Power (Pmax) 520 Wp
Module Efficiency 23.4 %
Panel Efficiency Range 22.72 to 23.62 %
Power Tolerance 0 to +1 %
Voltage at Maximum Power (Vmpp) 34.88 V
Current at Maximum Power (Impp) 14.91 A
Open Circuit Voltage (Voc) 42.17 V
Short Circuit Current (Isc) 16.01 A
Maximum System Voltage 1500 V
Series Fuse Rating 30 A
Total Degradation Rate 90.3 % power after 30 years (≈0.32 % per year)
Nominal Operating Temperature 45 ± 2 °C
Operating Temperature Range -40 to 85 °C
Temperature Coefficient of Pmax -0.24 % / °C
Temperature Coefficient of Voc -0.24 % / °C
Temperature Coefficient of Isc 0.04 % / °C
Panel Dimensions (H × W × D) 1960 × 1134 × 30 mm
Weight 27.6 kg
Glass Type Anti reflection coating glass
Glass Thickness 2 mm
Frame Type Anodized aluminium frame
Junction Box Protection Class IP68 rated junction box
Connector Type MC4 compatible connectors
Cable Cross Section 4 mm²
Cable Length 300 mm

Certifications & Compliance

Certifications: Certification details are typically aligned with major IEC and performance standards. Please confirm exact certificates with Guorun Energy.
Inverter Compatibility: Designed for modern string and central inverters that support 1500 V DC systems and MC4 terminations.
Environmental: IP68 junction box and robust frame construction are suited to harsh outdoor conditions and wide climates.
Warranty: 15 year product warranty and 30 year power warranty with power output of 90.3 percent retained at year 30.

Documentation

Product Datasheet (PDF)

● 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.

Guorun Energy 520 HJT Bifacial Monocrystalline Solar Panel

Model 520 | Bifacial HJT Monocrystalline | 108 Cells | Bifacial | 1500 V System Voltage

520 Wp
Max Power Output
23.4 %
Module Efficiency
108
HJT Bifacial Cells

Product Overview

The Guorun Energy 520 HJT Bifacial Monocrystalline Solar Panel is designed for high power density and long term reliability. This advanced module uses heterojunction bifacial technology to capture sunlight from both the front and rear sides. Its rated maximum power of 520 Wp makes it ideal for commercial rooftops, ground mount systems and high performance residential arrays. Panel efficiency reaches up to 23.4 percent, so more energy is produced from every square meter of roof or land. The module operates within a wide temperature range from minus 40 to 85 degrees Celsius. A durable anodized aluminium frame and anti reflection coated glass improve strength and light capture. The Guorun Energy 520 panel is suited to modern 1500 volt systems and is engineered for low annual degradation. With a 15 year product warranty and 30 year power warranty, this panel supports stable long term energy yield. It offers an attractive balance of efficiency, reliability and lifecycle energy production for demanding projects.

Key Benefits

High power density: A maximum output of 520 Wp allows more generation from limited roof or ground area.

Excellent module efficiency: Efficiency up to 23.4 percent reduces balance of system costs and increases project yield.

Bifacial HJT technology: Bifacial heterojunction cells harvest light from both sides, boosting energy in high albedo sites.

Robust thermal performance: A low temperature coefficient of Pmax at -0.24 percent per degree maintains power on hot days.

Long life warranty coverage: A 15 year product warranty and 30 year power warranty support long term investment confidence.

Durable construction: Anti reflection coated glass and an anodized aluminium frame provide mechanical strength and protection.

How It Works

This Guorun Energy 520 HJT Bifacial Monocrystalline Solar Panel converts sunlight into usable direct current power. Its monocrystalline heterojunction cells are arranged in a 108 cell layout that optimises current flow and voltage. When sunlight strikes the front glass, photons are absorbed by the silicon layers in each cell. This energy frees electrons and creates an electric field that drives current through the conductors. Bifacial construction also allows the rear side to capture reflected and diffuse light from the environment. The combined effect increases total daily energy yield, especially above bright surfaces such as concrete or light gravel. Generated current flows through the junction box and MC4 connectors to the system wiring. From there, a compatible inverter converts the direct current into grid ready alternating current for site loads or export. The panel operates safely within its rated voltage and temperature range when installed to industry best practices.

Bifacial light harvesting: Front and rear cell surfaces collect direct, reflected and scattered light during the day. This dual side collection increases kilowatt hour output compared with similar monofacial modules.

High efficiency HJT cell design: Heterojunction cells combine crystalline silicon with thin amorphous layers to reduce recombination losses. Lower losses help the panel maintain strong performance under high temperatures and low light conditions.

Optimised electrical performance: At maximum power, the module delivers 34.88 volts and 14.91 amps for a 520 Wp output. Its low power tolerance of 0 to plus 1 percent ensures reliable nameplate performance in the field.

Technical Specifications

Brand Guorun Energy Group Co., Ltd.
Country of Origin China
Cell Technology Bifacial HJT monocrystalline
Cell Count 108 cells
Technology Type Bifacial monocrystalline module
Power Range 505 to 525 Wp
Maximum Power (Pmax) 520 Wp
Module Efficiency 23.4 %
Panel Efficiency Range 22.72 to 23.62 %
Power Tolerance 0 to +1 %
Voltage at Maximum Power (Vmpp) 34.88 V
Current at Maximum Power (Impp) 14.91 A
Open Circuit Voltage (Voc) 42.17 V
Short Circuit Current (Isc) 16.01 A
Maximum System Voltage 1500 V
Series Fuse Rating 30 A
Total Degradation Rate 90.3 % power after 30 years (≈0.32 % per year)
Nominal Operating Temperature 45 ± 2 °C
Operating Temperature Range -40 to 85 °C
Temperature Coefficient of Pmax -0.24 % / °C
Temperature Coefficient of Voc -0.24 % / °C
Temperature Coefficient of Isc 0.04 % / °C
Panel Dimensions (H × W × D) 1960 × 1134 × 30 mm
Weight 27.6 kg
Glass Type Anti reflection coating glass
Glass Thickness 2 mm
Frame Type Anodized aluminium frame
Junction Box Protection Class IP68 rated junction box
Connector Type MC4 compatible connectors
Cable Cross Section 4 mm²
Cable Length 300 mm

Certifications & Compliance

Certifications: Certification details are typically aligned with major IEC and performance standards. Please confirm exact certificates with Guorun Energy.
Inverter Compatibility: Designed for modern string and central inverters that support 1500 V DC systems and MC4 terminations.
Environmental: IP68 junction box and robust frame construction are suited to harsh outdoor conditions and wide climates.
Warranty: 15 year product warranty and 30 year power warranty with power output of 90.3 percent retained at year 30.

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!

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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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

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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