Topco Solar 445
Topco Solar 445
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Topco Solar 445

Topco Solar 445

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Unlimited lifetime support, always available.

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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.

Topco Solar 445 Monocrystalline PERC Monofacial Solar Panel

Model Topco Solar 445 | Monocrystalline PERC | 320 Cells Full-Cell | Monofacial | 1500V System Voltage

445 W
Max Power Output
Up to 21.4%
Module Efficiency
320
N-Type TOPCon

Product Overview

The Topco Solar 445 Monocrystalline PERC Monofacial Solar Panel delivers dependable power for residential and commercial arrays. This high efficiency module offers a power range from 420 to 445 watts, giving designers strong flexibility. Premium monocrystalline cells help turn more sunlight into usable energy in limited roof space. A maximum module efficiency of up to 21.4 percent supports excellent production in real world conditions. This panel has been engineered to operate reliably from minus 40 to 85 degrees Celsius. For long term performance confidence, a product warranty of 15 years is combined with a 25 year power warranty. By year twenty five, at least 84.8 percent of the initial power is expected to remain in service. This makes the Topco Solar 445 a compelling option for long lasting solar projects in the United States and beyond.

Key Benefits

High power density for limited space: With up to 445 watts output and efficiency up to 21.4 percent, this module delivers strong energy yield on compact roofs and ground arrays.

Reliable long term performance: The 25 year power warranty with only 0.61 percent annual degradation helps maintain stable production through the system lifetime.

Strong thermal behavior: A low temperature coefficient of power at minus 0.34 percent per degree Celsius supports better output on hot roofs and sunny sites.

Robust mechanical design: Tempered 3.2 millimeter glass and an anodized aluminium frame provide durability in harsh weather, from snow loads to strong wind.

Versatile system integration: A 1500 volt maximum system voltage and 25 amp series fuse rating enable efficient string design with a wide range of modern inverters.

How It Works

This monocrystalline solar module captures sunlight and converts it into direct current electricity through high quality silicon cells. When sunlight hits the 320 cells, electrons are set in motion and a DC current is created. The panel’s electrical design, with optimized voltage and current levels, makes it easy to connect multiple modules in series strings. These strings feed a compatible inverter that converts the DC power to AC electricity for homes or businesses. The tempered glass, weather resistant frame, and IP68 rated junction box work together to protect the cells and cabling. Over decades of operation, the controlled degradation rate helps maintain predictable power output. This allows system owners to accurately plan production, savings, and return on investment over the full warranty period.

Premium monocrystalline cell conversion: Each monocrystalline cell is manufactured to provide strong light absorption and efficient carrier collection. The cells convert solar irradiance into direct current with reduced resistive losses, supporting the high module efficiency rating.

Optimized electrical output and stringing: At standard operating conditions, the panel delivers 36.4 volts and 12.23 amps at maximum power. These values allow installers to design balanced strings on 1500 volt systems while staying within inverter input limits and fuse ratings.

Durable weather sealed construction: The 3.2 millimeter tempered glass and anodized aluminium frame shield the cells from mechanical stress and impact. An IP68 junction box with integrated diodes protects the electrical connections from moisture and dust while supporting safe, stable operation.

Technical Specifications

Brand Topco Solar Inc.
Model Topco Solar 445
Cell Technology Monocrystalline PERC
Cell Number 320 cells
Power Range 420 Wp to 445 Wp
Maximum Power (Pmax) 445 Wp
Panel Efficiency Range 20.2% to 21.4%
Voltage at Maximum Power (Vmpp) - 445 W 36.4 V
Current at Maximum Power (Impp) - 445 W 12.23 A
Open Circuit Voltage (Voc) - 445 W 43.8 V
Short Circuit Current (Isc) - 445 W 13.01 A
Alternate Maximum Power (Pmax) 335 Wp
Voltage at Maximum Power (Vmpp) - 335 W 34.7 V
Current at Maximum Power (Impp) - 335 W 9.66 A
Open Circuit Voltage (Voc) - 335 W 41.8 V
Short Circuit Current (Isc) - 335 W 10.5 A
Nominal Operating Cell Temperature 42.3 ± 2 °C
Operating Temperature Range -40 °C to 85 °C
Temperature Coefficient of Pmax -0.34 % / °C
Temperature Coefficient of Voc -0.27 % / °C
Temperature Coefficient of Isc +0.04 % / °C
Maximum System Voltage 1500 V
Series Fuse Rating 25 A
Panel Dimensions (H x W x D) 1899 x 1096 x 30 mm
Weight 21.8 kg
Glass Type and Thickness 3.2 mm tempered glass
Frame Type Anodized aluminium frame
Junction Box Diodes 2 bypass diodes
Junction Box Protection Class IP68 rated
Cable Cross Section 4 mm²
Total Degradation at Year 25 84.8% of initial power retained

Certifications & Compliance

Certifications: Industry standard IEC and UL certifications are typically supported for this class of module; please confirm current certificates with Topco Solar Inc. before final design approval.
Inverter Compatibility: Suitable for use with most modern string and central inverters that accept 1500 V DC systems and standard MC compatible connectors.
Environmental: Designed for outdoor rooftop and ground mount use, with IP68 junction box protection and components selected for wide temperature ranges and varied climates.
Warranty: 15 year limited product warranty combined with a 25 year power warranty, with an expected remaining output of 84.8% of initial power at the end of the performance term.

Documentation

The detailed manufacturer datasheet for the Topco Solar 445 panel can be requested directly from Topco Solar Inc. or from your distributor. Installation manuals and full warranty terms are available upon request to support engineering review and permitting.

● 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.

Topco Solar 445 Monocrystalline PERC Monofacial Solar Panel

Model Topco Solar 445 | Monocrystalline PERC | 320 Cells Full-Cell | Monofacial | 1500V System Voltage

445 W
Max Power Output
Up to 21.4%
Module Efficiency
320
N-Type TOPCon

Product Overview

The Topco Solar 445 Monocrystalline PERC Monofacial Solar Panel delivers dependable power for residential and commercial arrays. This high efficiency module offers a power range from 420 to 445 watts, giving designers strong flexibility. Premium monocrystalline cells help turn more sunlight into usable energy in limited roof space. A maximum module efficiency of up to 21.4 percent supports excellent production in real world conditions. This panel has been engineered to operate reliably from minus 40 to 85 degrees Celsius. For long term performance confidence, a product warranty of 15 years is combined with a 25 year power warranty. By year twenty five, at least 84.8 percent of the initial power is expected to remain in service. This makes the Topco Solar 445 a compelling option for long lasting solar projects in the United States and beyond.

Key Benefits

High power density for limited space: With up to 445 watts output and efficiency up to 21.4 percent, this module delivers strong energy yield on compact roofs and ground arrays.

Reliable long term performance: The 25 year power warranty with only 0.61 percent annual degradation helps maintain stable production through the system lifetime.

Strong thermal behavior: A low temperature coefficient of power at minus 0.34 percent per degree Celsius supports better output on hot roofs and sunny sites.

Robust mechanical design: Tempered 3.2 millimeter glass and an anodized aluminium frame provide durability in harsh weather, from snow loads to strong wind.

Versatile system integration: A 1500 volt maximum system voltage and 25 amp series fuse rating enable efficient string design with a wide range of modern inverters.

How It Works

This monocrystalline solar module captures sunlight and converts it into direct current electricity through high quality silicon cells. When sunlight hits the 320 cells, electrons are set in motion and a DC current is created. The panel’s electrical design, with optimized voltage and current levels, makes it easy to connect multiple modules in series strings. These strings feed a compatible inverter that converts the DC power to AC electricity for homes or businesses. The tempered glass, weather resistant frame, and IP68 rated junction box work together to protect the cells and cabling. Over decades of operation, the controlled degradation rate helps maintain predictable power output. This allows system owners to accurately plan production, savings, and return on investment over the full warranty period.

Premium monocrystalline cell conversion: Each monocrystalline cell is manufactured to provide strong light absorption and efficient carrier collection. The cells convert solar irradiance into direct current with reduced resistive losses, supporting the high module efficiency rating.

Optimized electrical output and stringing: At standard operating conditions, the panel delivers 36.4 volts and 12.23 amps at maximum power. These values allow installers to design balanced strings on 1500 volt systems while staying within inverter input limits and fuse ratings.

Durable weather sealed construction: The 3.2 millimeter tempered glass and anodized aluminium frame shield the cells from mechanical stress and impact. An IP68 junction box with integrated diodes protects the electrical connections from moisture and dust while supporting safe, stable operation.

Technical Specifications

Brand Topco Solar Inc.
Model Topco Solar 445
Cell Technology Monocrystalline PERC
Cell Number 320 cells
Power Range 420 Wp to 445 Wp
Maximum Power (Pmax) 445 Wp
Panel Efficiency Range 20.2% to 21.4%
Voltage at Maximum Power (Vmpp) - 445 W 36.4 V
Current at Maximum Power (Impp) - 445 W 12.23 A
Open Circuit Voltage (Voc) - 445 W 43.8 V
Short Circuit Current (Isc) - 445 W 13.01 A
Alternate Maximum Power (Pmax) 335 Wp
Voltage at Maximum Power (Vmpp) - 335 W 34.7 V
Current at Maximum Power (Impp) - 335 W 9.66 A
Open Circuit Voltage (Voc) - 335 W 41.8 V
Short Circuit Current (Isc) - 335 W 10.5 A
Nominal Operating Cell Temperature 42.3 ± 2 °C
Operating Temperature Range -40 °C to 85 °C
Temperature Coefficient of Pmax -0.34 % / °C
Temperature Coefficient of Voc -0.27 % / °C
Temperature Coefficient of Isc +0.04 % / °C
Maximum System Voltage 1500 V
Series Fuse Rating 25 A
Panel Dimensions (H x W x D) 1899 x 1096 x 30 mm
Weight 21.8 kg
Glass Type and Thickness 3.2 mm tempered glass
Frame Type Anodized aluminium frame
Junction Box Diodes 2 bypass diodes
Junction Box Protection Class IP68 rated
Cable Cross Section 4 mm²
Total Degradation at Year 25 84.8% of initial power retained

Certifications & Compliance

Certifications: Industry standard IEC and UL certifications are typically supported for this class of module; please confirm current certificates with Topco Solar Inc. before final design approval.
Inverter Compatibility: Suitable for use with most modern string and central inverters that accept 1500 V DC systems and standard MC compatible connectors.
Environmental: Designed for outdoor rooftop and ground mount use, with IP68 junction box protection and components selected for wide temperature ranges and varied climates.
Warranty: 15 year limited product warranty combined with a 25 year power warranty, with an expected remaining output of 84.8% of initial power at the end of the performance term.

Documentation

The detailed manufacturer datasheet for the Topco Solar 445 panel can be requested directly from Topco Solar Inc. or from your distributor. Installation manuals and full warranty terms are available upon request to support engineering review and permitting.

● 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

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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