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GermanSolar 300

GermanSolar 300

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

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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.

GermanSolar 300 300W PERC Monocrystalline Solar Panel

Model 300 | PERC Monocrystalline | 60 Full-Cell 156×156 mm | Monofacial | 1000V System Voltage

300 Wp
Max Power Output
18.4%
Module Efficiency
60 Cells
PERC Monocrystalline

Product Overview

The GermanSolar 300 300W PERC Monocrystalline Solar Panel is designed for reliable power production and long service life in residential, commercial, and small industrial systems. This high quality module combines a 300 Wp maximum power rating with up to 18.4% panel efficiency for strong output from a compact footprint. Advanced PERC cell technology is used to capture more sunlight and improve performance in real world conditions, including high temperatures and partial cloud cover. The panel features 60 monocrystalline cells sized 156×156 mm, optimized within a 1650×997×40 mm frame that fits common racking and rooftop layouts. A robust anodized aluminium frame and anti reflection coated glass are employed to enhance structural strength while improving light transmission. The GermanSolar 300 panel is engineered to deliver consistent energy yield with a low total degradation rate of only 0.8% per year under standard conditions. A 12 year product warranty and extended power warranty provide long term assurance for owners and installers. This module is a strong choice for customers seeking dependable 300 watt performance with modern PERC technology and precise GermanSolar engineering.

Key Benefits

High power density for limited roof space: The 300 Wp output and up to 18.4% efficiency allow more energy from fewer modules on constrained roofs.

Reliable long term performance: A 10 year power warranty to 90% and 25 year warranty to 80% output support dependable lifetime energy yield.

Robust construction and materials: Anodized aluminium frame, EVA encapsulation, and 3.2 mm anti reflection glass improve durability in harsh weather conditions.

Flexible system design: The 1000 V maximum system voltage and 15 A series fuse rating suit a wide range of string inverters and layouts.

Optimized for various climates: A broad operating temperature range from -40 °C to 85 °C supports installations in both hot and cold environments.

Trusted GermanSolar brand: The panel is supplied by GermanSolar USA Inc., providing local expertise and support within the United States market.

How It Works

This GermanSolar 300 300W PERC Monocrystalline Solar Panel converts sunlight into usable DC electricity through high efficiency PERC cells and carefully matched electrical characteristics. Each of the 60 monocrystalline cells generates current when exposed to light, and the combined array delivers up to 300 Wp at standard test conditions. The module operates around 32.88 V at maximum power with a current of 9.33 A, which suits typical residential and commercial string configurations. An anti reflection coated glass surface is used to admit more light to the cells, while EVA encapsulation protects internal circuitry from moisture and mechanical stress. When connected to a compatible inverter, the DC output is converted into AC energy for household loads or grid export. The low temperature coefficients and engineered operating window help maintain stable performance across seasonal temperature swings.

PERC monocrystalline energy conversion: PERC monocrystalline cells use a passivated rear surface to reflect unabsorbed light back into the cell structure. This design increases the chance of photon absorption and boosts overall energy conversion efficiency compared to standard cells. The result is higher output from the same panel area, which is beneficial on space constrained rooftops and carports.

Optimized electrical performance under load: At maximum power, the module delivers 32.88 V and 9.33 A in its 300 Wp configuration, supporting efficient string design with modern inverters. A tight power tolerance of 0 to +1.5% ensures that modules meet or slightly exceed their nameplate power rating in the field. Open circuit voltage reaches 39.82 V, while short circuit current is 9.74 A, providing clear parameters for safe and efficient array sizing.

Thermal management and long term stability: The panel is specified for operation from -40 °C to 85 °C, which allows year round use in diverse climates. Temperature coefficients of -0.414%/°C for Pmax and -0.45%/°C for Voc help define expected output reduction as cell temperatures rise. A low total degradation rate of 0.8% per year is supported by quality encapsulant materials and a rigid anodized aluminium frame. Together, these design choices maintain structural integrity, electrical insulation, and stable performance throughout the warranty period.

Technical Specifications

Manufacturer GermanSolar USA Inc.
Country of Origin United States
Model Number 300
Cell Technology PERC monocrystalline
Cell Type and Size Monocrystalline 156 × 156 mm cells
Number of Cells 60 cells
Technology Type Monofacial crystalline silicon module
Power Range 285 Wp to 300 Wp
Maximum Power (Pmax) - High Rating 300 Wp
Voltage at Pmax (Vmpp) - 300 Wp 32.88 V
Current at Pmax (Impp) - 300 Wp 9.33 A
Open Circuit Voltage (Voc) - 300 Wp 39.82 V
Short Circuit Current (Isc) - 300 Wp 9.74 A
Maximum Power (Pmax) - Lower Rating 223 Wp
Voltage at Pmax (Vmpp) - 223 Wp 31.01 V
Current at Pmax (Impp) - 223 Wp 7.19 A
Open Circuit Voltage (Voc) - 223 Wp 36.39 V
Short Circuit Current (Isc) - 223 Wp 7.89 A
Module Efficiency Range 17.5% to 18.4%
Power Tolerance 0 to +1.5%
Total Degradation Rate 0.8% per year (typical)
Nominal Operating Cell Temperature 45 ± 2 °C
Operating Temperature Range -40 °C to 85 °C
Temperature Coefficient of Pmax -0.414% / °C
Temperature Coefficient of Voc -0.45% / °C
Temperature Coefficient of Isc +0.026% / °C
Maximum System Voltage 1000 V
Series Fuse Rating 15 A
Module Dimensions (H × W × D) 1650 × 997 × 40 mm
Weight 19.4 kg
Front Glass Type Anti reflection coating glass
Front Glass Thickness 3.2 mm
Encapsulant EVA (ethylene vinyl acetate)
Frame Material and Color Anodized aluminium, black
Junction Box Weather resistant junction box with factory assembled connections

Certifications & Compliance

Certifications: Specific certification standards are not listed in the available product data. Modules of this type are typically tested to major IEC and UL safety and performance standards, but installers should confirm compliance with the latest GermanSolar documentation.
Inverter Compatibility: The 1000 V maximum system voltage and 15 A series fuse rating support compatibility with most modern string inverters designed for 1000 Vdc arrays. Always verify final design with inverter manufacturer guidelines and local electrical codes.
Environmental: The module is engineered for outdoor use with a wide operating temperature range and durable materials. Site specific wind, snow, and corrosion requirements should be checked against project specifications and mounting system ratings.
Warranty: A 12 year product warranty covers defects in materials and workmanship under normal use. The power warranty specifies at least 90% of rated output at 10 years and at least 80% of rated output at 25 years, aligned with a total degradation rate of approximately 0.8% per year. Installers should review the detailed GermanSolar warranty terms for conditions and claim procedures.

● Available | Contact us for lead time and project specific 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.

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

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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