Grankia GMH430W
Grankia GMH430W
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Grankia GMH430W

Grankia GMH430W

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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.

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Specifications

Power Rating 430W

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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.

Grankia GMH430W 430W Monocrystalline P-Type Solar Panel

Model GMH430W | Monocrystalline P-Type | 120 Half-Cell | Monofacial | 1500V System Voltage

430 Wp
Max Power Output
19.9%
Module Efficiency
120
Monocrystalline Cells

Product Overview

The Grankia GMH430W 430W monocrystalline solar panel delivers reliable power for residential and commercial systems. This high efficiency module uses advanced monocrystalline cells to achieve up to 19.9 percent panel efficiency. A rated maximum power of 430 Wp is provided, with a tight power tolerance from 0 to +1 percent for consistent output. The module sits within a broader power range of 430 to 455 Wp, which supports flexible string design. With a robust anodized aluminium frame and 3.2 mm glass, the panel is built for long term outdoor exposure. Its 1500 V maximum system voltage enables use in modern high voltage arrays. Compact dimensions of 1909 by 1134 by 30 mm help installers optimize roof space on smaller projects. A 12 year product warranty provides confidence for investors and system owners. Manufacturing is carried out by Grankia Electric in Guangdong, China, ensuring industrial scale quality control. This panel suits grid tied and off grid projects where strong performance and durable construction are required.

Key Benefits

High power density: A maximum output of 430 Wp is delivered from a compact footprint. This allows more installed power per square meter on rooftops and ground mounts.

Reliable monocrystalline cells: Premium monocrystalline cells are used for strong performance and stable long term yields. Their consistent structure supports better low light behavior than many polycrystalline options.

Optimized electrical performance: Tight 0 to +1 percent power tolerance reduces underperformance risk in the field. Carefully matched voltage and current support efficient inverter operation.

Durable construction: An anodized aluminium frame, EVA encapsulant, and 3.2 mm glass protect the cells against weather and mechanical stress. The IP68 junction box helps secure long term cable and connection integrity.

Flexible system design: The 1500 V maximum system voltage and 25 A series fuse rating enable use in larger strings. This supports efficient wiring layouts for modern residential and commercial arrays.

How It Works

The Grankia GMH430W solar panel converts sunlight into usable electrical energy through its monocrystalline cells. Each cell is made from high purity silicon designed to capture photons and release electrons. When sunlight hits the 182 by 91 millimeter cells, an electric field is formed and a direct current is produced. These cells are configured as 120 half cells to reduce resistive losses and improve overall module efficiency. The generated current flows through internal busbars and is carried to the IP68 junction box. From there, pre attached 4 mm² cables transmit power to the rest of the solar system. An inverter is typically used to transform the direct current into alternating current for onsite loads or export. The panel operates safely within a wide temperature range from minus 40 to 85 degrees Celsius. Performance variations from temperature are moderated by carefully controlled temperature coefficients. This design enables stable energy production across different climates and seasons.

Monocrystalline cell generation: Sunlight enters through the 3.2 mm glass and reaches the monocrystalline cells. An internal electric field is created, which drives electrons and generates direct current. The half cell layout helps lower internal resistance and improves power output at 430 Wp rating.

Energy transfer and cabling: Current from each cell string is routed to the junction box, which contains three integrated diodes. These bypass diodes help protect the module during partial shading and maintain power flow. The 4 mm² cables and 300 mm length simplify series and parallel string connections.

System integration and operation: The module is connected into a string designed around the 40.65 V open circuit voltage and 33.89 V operating voltage. The 12.69 A current at maximum power is matched with inverter input requirements. Arrays are engineered within the 1500 V system limit and 25 A series fuse rating for safe long term operation.

Technical Specifications

Manufacturer Grankia Electric (Guangdong) Co., Ltd.
Country of Origin China
Module Type Monocrystalline P-Type solar panel, monofacial
Model Number GMH430W
Power Range 430 to 455 Wp
Maximum Power (Pmax) 430 Wp
Power Tolerance 0 to +1 %
Panel Efficiency 19.9 % (range 19.9 to 21.1 % across series)
Voltage at Maximum Power (Vmpp) 33.89 V
Current at Maximum Power (Impp) 12.69 A
Open Circuit Voltage (Voc) 40.65 V
Short Circuit Current (Isc) 13.59 A
Nominal Operating Temperature 45 ± 2 °C
Operating Temperature Range -40 to +85 °C
Temperature Coefficient of Pmax -0.35 % / °C
Temperature Coefficient of Voc -0.276 % / °C
Temperature Coefficient of Isc +0.046 % / °C
Maximum System Voltage 1500 V
Series Fuse Rating 25 A
Panel Dimensions (H x W x D) 1909 x 1134 x 30 mm
Weight 23.9 kg
Cell Size 182 × 91 mm
Cell Count and Layout 120 half cells, monocrystalline
Front Glass Thickness 3.2 mm
Encapsulant Type EVA (ethylene vinyl acetate)
Frame Material Anodized aluminium alloy
Junction Box Diodes 3 bypass diodes integrated
Junction Box Protection Rating IP68 protection class
Cable Cross Section 4 mm² solar cable
Cable Length 300 mm

Certifications & Compliance

Certifications: Standard international IEC and safety certifications are typically supported by Grankia modules. Please check the official datasheet or label for the exact certification list for this model.
Inverter Compatibility: Compatible with most modern string and hybrid inverters designed for 1500 V systems. Always verify Voc, current, and string length against the inverter input specifications and local design standards.
Environmental: Designed for outdoor installation with IP68 junction box and durable frame. Suitable for a wide range of climates within the rated temperature range and common wind and snow loading conditions as specified by the manufacturer.
Warranty: 12 year product warranty is provided on materials and workmanship. Performance warranty terms should be confirmed with Grankia Electric or your distributor before purchase.

● 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.

Grankia GMH430W 430W Monocrystalline P-Type Solar Panel

Model GMH430W | Monocrystalline P-Type | 120 Half-Cell | Monofacial | 1500V System Voltage

430 Wp
Max Power Output
19.9%
Module Efficiency
120
Monocrystalline Cells

Product Overview

The Grankia GMH430W 430W monocrystalline solar panel delivers reliable power for residential and commercial systems. This high efficiency module uses advanced monocrystalline cells to achieve up to 19.9 percent panel efficiency. A rated maximum power of 430 Wp is provided, with a tight power tolerance from 0 to +1 percent for consistent output. The module sits within a broader power range of 430 to 455 Wp, which supports flexible string design. With a robust anodized aluminium frame and 3.2 mm glass, the panel is built for long term outdoor exposure. Its 1500 V maximum system voltage enables use in modern high voltage arrays. Compact dimensions of 1909 by 1134 by 30 mm help installers optimize roof space on smaller projects. A 12 year product warranty provides confidence for investors and system owners. Manufacturing is carried out by Grankia Electric in Guangdong, China, ensuring industrial scale quality control. This panel suits grid tied and off grid projects where strong performance and durable construction are required.

Key Benefits

High power density: A maximum output of 430 Wp is delivered from a compact footprint. This allows more installed power per square meter on rooftops and ground mounts.

Reliable monocrystalline cells: Premium monocrystalline cells are used for strong performance and stable long term yields. Their consistent structure supports better low light behavior than many polycrystalline options.

Optimized electrical performance: Tight 0 to +1 percent power tolerance reduces underperformance risk in the field. Carefully matched voltage and current support efficient inverter operation.

Durable construction: An anodized aluminium frame, EVA encapsulant, and 3.2 mm glass protect the cells against weather and mechanical stress. The IP68 junction box helps secure long term cable and connection integrity.

Flexible system design: The 1500 V maximum system voltage and 25 A series fuse rating enable use in larger strings. This supports efficient wiring layouts for modern residential and commercial arrays.

How It Works

The Grankia GMH430W solar panel converts sunlight into usable electrical energy through its monocrystalline cells. Each cell is made from high purity silicon designed to capture photons and release electrons. When sunlight hits the 182 by 91 millimeter cells, an electric field is formed and a direct current is produced. These cells are configured as 120 half cells to reduce resistive losses and improve overall module efficiency. The generated current flows through internal busbars and is carried to the IP68 junction box. From there, pre attached 4 mm² cables transmit power to the rest of the solar system. An inverter is typically used to transform the direct current into alternating current for onsite loads or export. The panel operates safely within a wide temperature range from minus 40 to 85 degrees Celsius. Performance variations from temperature are moderated by carefully controlled temperature coefficients. This design enables stable energy production across different climates and seasons.

Monocrystalline cell generation: Sunlight enters through the 3.2 mm glass and reaches the monocrystalline cells. An internal electric field is created, which drives electrons and generates direct current. The half cell layout helps lower internal resistance and improves power output at 430 Wp rating.

Energy transfer and cabling: Current from each cell string is routed to the junction box, which contains three integrated diodes. These bypass diodes help protect the module during partial shading and maintain power flow. The 4 mm² cables and 300 mm length simplify series and parallel string connections.

System integration and operation: The module is connected into a string designed around the 40.65 V open circuit voltage and 33.89 V operating voltage. The 12.69 A current at maximum power is matched with inverter input requirements. Arrays are engineered within the 1500 V system limit and 25 A series fuse rating for safe long term operation.

Technical Specifications

Manufacturer Grankia Electric (Guangdong) Co., Ltd.
Country of Origin China
Module Type Monocrystalline P-Type solar panel, monofacial
Model Number GMH430W
Power Range 430 to 455 Wp
Maximum Power (Pmax) 430 Wp
Power Tolerance 0 to +1 %
Panel Efficiency 19.9 % (range 19.9 to 21.1 % across series)
Voltage at Maximum Power (Vmpp) 33.89 V
Current at Maximum Power (Impp) 12.69 A
Open Circuit Voltage (Voc) 40.65 V
Short Circuit Current (Isc) 13.59 A
Nominal Operating Temperature 45 ± 2 °C
Operating Temperature Range -40 to +85 °C
Temperature Coefficient of Pmax -0.35 % / °C
Temperature Coefficient of Voc -0.276 % / °C
Temperature Coefficient of Isc +0.046 % / °C
Maximum System Voltage 1500 V
Series Fuse Rating 25 A
Panel Dimensions (H x W x D) 1909 x 1134 x 30 mm
Weight 23.9 kg
Cell Size 182 × 91 mm
Cell Count and Layout 120 half cells, monocrystalline
Front Glass Thickness 3.2 mm
Encapsulant Type EVA (ethylene vinyl acetate)
Frame Material Anodized aluminium alloy
Junction Box Diodes 3 bypass diodes integrated
Junction Box Protection Rating IP68 protection class
Cable Cross Section 4 mm² solar cable
Cable Length 300 mm

Certifications & Compliance

Certifications: Standard international IEC and safety certifications are typically supported by Grankia modules. Please check the official datasheet or label for the exact certification list for this model.
Inverter Compatibility: Compatible with most modern string and hybrid inverters designed for 1500 V systems. Always verify Voc, current, and string length against the inverter input specifications and local design standards.
Environmental: Designed for outdoor installation with IP68 junction box and durable frame. Suitable for a wide range of climates within the rated temperature range and common wind and snow loading conditions as specified by the manufacturer.
Warranty: 12 year product warranty is provided on materials and workmanship. Performance warranty terms should be confirmed with Grankia Electric or your distributor before purchase.

● 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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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

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