SENEC 445
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SENEC 445

SENEC 445

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9+ sold

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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.

SENEC SENEC 445 445W N-Type TOPCon Bifacial Solar Panel

Model SENEC 445 | N-Type TOPCon | 144 Half-Cell | Bifacial | 1500V System Voltage

445 W
Max Power Output
22.3%
Module Efficiency
144
N-Type TOPCon

Product Overview

The SENEC 445W N-Type TOPCon bifacial solar panel has been engineered for high performance in demanding European conditions. This module uses advanced N-type TOPCon half-cell technology to deliver up to 445 W rated output and a strong 22.3 percent efficiency. The bifacial design uses both the front and rear glass surfaces to harvest additional light and raise total energy yield. With a robust 30 year product warranty and a linear power warranty down to 87.4 percent at year 30, long term reliability is supported. The module is built around 144 half cut monocrystalline cells, low degradation materials, and an anodized black aluminium frame for a premium appearance. This combination makes the panel ideal for residential rooftops, commercial arrays, and design conscious projects where output, durability, and aesthetics must align.

Key Benefits

High power density for limited roof space: With 445 W rated output and 22.3 percent efficiency, strong production is delivered from a compact footprint. This helps systems reach target capacity even on small residential or commercial roofs.

Bifacial design for extra yield: The transparent back glass allows light reflecting from bright surfaces to be converted into electricity. This rear side contribution can increase total kilowatt hour output over the module lifetime.

Long term performance security: A 30 year product warranty is combined with a power warranty of 99 percent after year one and 87.4 percent after 30 years. The low annual degradation rate of around 0.42 percent supports stable generation forecasts.

Robust mechanical construction: The panel uses 2 mm tempered glass with anti reflection coating on the front and 2 mm hardened glass on the rear. The black anodized aluminium frame and IP68 junction box support long service life in harsh outdoor environments.

Flexible system design options: A maximum system voltage of 1500 V and 30 A series fuse rating allow longer strings and efficient cabling layouts. Standard MC4 Evo2 compatible connectors and 1100 mm leads simplify integration with common inverters and racking systems.

How It Works

The SENEC 445 bifacial N-type TOPCon solar panel converts sunlight into clean direct current electricity using monocrystalline half cells. When sunlight hits the front glass, photons are absorbed by the N-type silicon cells and free electrons are generated. These electrons flow through the cell structure, creating a stable current that exits through the factory installed MC4 connectors. The bifacial construction also captures light from the rear side, so energy is harvested from both direct sunlight and reflected light from the ground or nearby surfaces. Strings of these modules are typically wired in series to reach the desired DC voltage, then connected to a compatible inverter that converts DC to AC for on site consumption or export. The panel operates reliably across a wide temperature range, and its low degradation profile supports consistent performance over several decades.

N-Type TOPCon half-cell conversion: Each module uses 144 monocrystalline half cells based on N-type TOPCon architecture. This cell structure reduces recombination losses and supports higher efficiency compared with conventional P-type cells. The half cut layout also reduces resistive losses and improves shade tolerance across the strings.

Bifacial glass glass construction: A dual glass design is used, with 2 mm anti reflection coated tempered glass on the front and 2 mm transparent tempered glass on the rear. Light entering from the back is absorbed by the rear side cell surface, boosting effective energy yield, especially over bright surfaces like light gravel or white membranes. The glass glass build also enhances moisture resistance and fire performance.

System integration and protection: Three bypass diodes inside the IP68 rated junction box protect the string against localised shading and reduce mismatch losses. The module supports system voltages up to 1500 V and a return current of 30 A, allowing long strings and efficient array design. When combined with a suitably rated inverter and mounting system, the panel forms the core of a reliable rooftop or ground mounted solar installation.

Technical Specifications

Brand / Manufacturer SENEC GmbH, Germany
Model Number SENEC.Solar 445N DGT G4 (SENEC 445 series)
Cell Technology N-type TOPCon monocrystalline, half-cell configuration
Cell Size 182 x 187 mm full cell, 144 half cells per module
Module Type Bifacial, dual glass, monocrystalline N-type
Nominal Power Range (STC) 440 W to 460 W, 445 W nominal configuration
Maximum Power (Pmax) at STC 445 Wp
Module Efficiency (STC) 22.3 % for 445 W configuration (up to 23.0 % for 460 W)
Power Tolerance -3 % to +3 % stated; sorting 0 to +5 W according to datasheet
Voltage at Maximum Power (Vmpp, STC) 33.71 V (445 W configuration)
Current at Maximum Power (Impp, STC) 13.20 A (445 W configuration)
Open Circuit Voltage (Voc, STC) 40.05 V (tolerance ± 3 %)
Short Circuit Current (Isc, STC) 14.10 A (tolerance ± 4 %)
Maximum Power (Pmax) at NMOT 335 Wp (445 W configuration at NMOT)
Voltage at Maximum Power (Vmpp, NMOT) 31.49 V (445 W configuration)
Current at Maximum Power (Impp, NMOT) 10.68 A (445 W configuration)
Open Circuit Voltage (Voc, NMOT) 37.94 V (445 W configuration)
Short Circuit Current (Isc, NMOT) 11.36 A (445 W configuration)
Nominal Module Operating Temperature (NMOT) 42 ± 2 °C
Operating Temperature Range -40 °C to +85 °C
Maximum System Voltage 1500 V DC (IEC)
Maximum Series Fuse Rating / Return Current 30 A
Module Dimensions (L × W × H) 1762 x 1134 x 30 mm
Weight 24.5 kg per module
Front Glass 2 mm high transparency tempered glass with anti reflection coating
Back Glass 2 mm transparent tempered glass, bifacial design
Frame Black anodized aluminium alloy frame
Junction Box IP68 rated junction box with three bypass diodes
Connector Type MC4 Evo2A compatible (Stäubli type)
Cable Cross Section 4.0 mm² solar cable
Cable Length 1100 mm
Protection Class / Safety Class Protection class II, fire class A (module)

Certifications & Compliance

Certifications: Designed to comply with core IEC photovoltaic standards for safety, performance, and quality. Modules are tested for hail impact resistance up to 40 mm ice ball diameter according to the manufacturer datasheet.
Inverter Compatibility: Suitable for modern string and central inverters rated for 1500 V DC systems. Standard MC4 compatible connectors and current ratings allow easy integration with leading brands when designed within voltage and current limits.
Environmental: Dual glass construction enhances resistance to moisture, UV, and ammonia rich air. The panel is suitable for typical European outdoor environments when mounted on approved racking systems.
Warranty: 30 year product warranty covering defects in materials and workmanship, plus long term power output warranty. Output is warranted to 99 % after the first year and at least 87.4 % after 30 years, reflecting an average annual degradation rate of about 0.42 %.

Documentation

Product Datasheet (PDF)

● Available | Contact us for lead time and pricing

Customer Reviews

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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.

SENEC SENEC 445 445W N-Type TOPCon Bifacial Solar Panel

Model SENEC 445 | N-Type TOPCon | 144 Half-Cell | Bifacial | 1500V System Voltage

445 W
Max Power Output
22.3%
Module Efficiency
144
N-Type TOPCon

Product Overview

The SENEC 445W N-Type TOPCon bifacial solar panel has been engineered for high performance in demanding European conditions. This module uses advanced N-type TOPCon half-cell technology to deliver up to 445 W rated output and a strong 22.3 percent efficiency. The bifacial design uses both the front and rear glass surfaces to harvest additional light and raise total energy yield. With a robust 30 year product warranty and a linear power warranty down to 87.4 percent at year 30, long term reliability is supported. The module is built around 144 half cut monocrystalline cells, low degradation materials, and an anodized black aluminium frame for a premium appearance. This combination makes the panel ideal for residential rooftops, commercial arrays, and design conscious projects where output, durability, and aesthetics must align.

Key Benefits

High power density for limited roof space: With 445 W rated output and 22.3 percent efficiency, strong production is delivered from a compact footprint. This helps systems reach target capacity even on small residential or commercial roofs.

Bifacial design for extra yield: The transparent back glass allows light reflecting from bright surfaces to be converted into electricity. This rear side contribution can increase total kilowatt hour output over the module lifetime.

Long term performance security: A 30 year product warranty is combined with a power warranty of 99 percent after year one and 87.4 percent after 30 years. The low annual degradation rate of around 0.42 percent supports stable generation forecasts.

Robust mechanical construction: The panel uses 2 mm tempered glass with anti reflection coating on the front and 2 mm hardened glass on the rear. The black anodized aluminium frame and IP68 junction box support long service life in harsh outdoor environments.

Flexible system design options: A maximum system voltage of 1500 V and 30 A series fuse rating allow longer strings and efficient cabling layouts. Standard MC4 Evo2 compatible connectors and 1100 mm leads simplify integration with common inverters and racking systems.

How It Works

The SENEC 445 bifacial N-type TOPCon solar panel converts sunlight into clean direct current electricity using monocrystalline half cells. When sunlight hits the front glass, photons are absorbed by the N-type silicon cells and free electrons are generated. These electrons flow through the cell structure, creating a stable current that exits through the factory installed MC4 connectors. The bifacial construction also captures light from the rear side, so energy is harvested from both direct sunlight and reflected light from the ground or nearby surfaces. Strings of these modules are typically wired in series to reach the desired DC voltage, then connected to a compatible inverter that converts DC to AC for on site consumption or export. The panel operates reliably across a wide temperature range, and its low degradation profile supports consistent performance over several decades.

N-Type TOPCon half-cell conversion: Each module uses 144 monocrystalline half cells based on N-type TOPCon architecture. This cell structure reduces recombination losses and supports higher efficiency compared with conventional P-type cells. The half cut layout also reduces resistive losses and improves shade tolerance across the strings.

Bifacial glass glass construction: A dual glass design is used, with 2 mm anti reflection coated tempered glass on the front and 2 mm transparent tempered glass on the rear. Light entering from the back is absorbed by the rear side cell surface, boosting effective energy yield, especially over bright surfaces like light gravel or white membranes. The glass glass build also enhances moisture resistance and fire performance.

System integration and protection: Three bypass diodes inside the IP68 rated junction box protect the string against localised shading and reduce mismatch losses. The module supports system voltages up to 1500 V and a return current of 30 A, allowing long strings and efficient array design. When combined with a suitably rated inverter and mounting system, the panel forms the core of a reliable rooftop or ground mounted solar installation.

Technical Specifications

Brand / Manufacturer SENEC GmbH, Germany
Model Number SENEC.Solar 445N DGT G4 (SENEC 445 series)
Cell Technology N-type TOPCon monocrystalline, half-cell configuration
Cell Size 182 x 187 mm full cell, 144 half cells per module
Module Type Bifacial, dual glass, monocrystalline N-type
Nominal Power Range (STC) 440 W to 460 W, 445 W nominal configuration
Maximum Power (Pmax) at STC 445 Wp
Module Efficiency (STC) 22.3 % for 445 W configuration (up to 23.0 % for 460 W)
Power Tolerance -3 % to +3 % stated; sorting 0 to +5 W according to datasheet
Voltage at Maximum Power (Vmpp, STC) 33.71 V (445 W configuration)
Current at Maximum Power (Impp, STC) 13.20 A (445 W configuration)
Open Circuit Voltage (Voc, STC) 40.05 V (tolerance ± 3 %)
Short Circuit Current (Isc, STC) 14.10 A (tolerance ± 4 %)
Maximum Power (Pmax) at NMOT 335 Wp (445 W configuration at NMOT)
Voltage at Maximum Power (Vmpp, NMOT) 31.49 V (445 W configuration)
Current at Maximum Power (Impp, NMOT) 10.68 A (445 W configuration)
Open Circuit Voltage (Voc, NMOT) 37.94 V (445 W configuration)
Short Circuit Current (Isc, NMOT) 11.36 A (445 W configuration)
Nominal Module Operating Temperature (NMOT) 42 ± 2 °C
Operating Temperature Range -40 °C to +85 °C
Maximum System Voltage 1500 V DC (IEC)
Maximum Series Fuse Rating / Return Current 30 A
Module Dimensions (L × W × H) 1762 x 1134 x 30 mm
Weight 24.5 kg per module
Front Glass 2 mm high transparency tempered glass with anti reflection coating
Back Glass 2 mm transparent tempered glass, bifacial design
Frame Black anodized aluminium alloy frame
Junction Box IP68 rated junction box with three bypass diodes
Connector Type MC4 Evo2A compatible (Stäubli type)
Cable Cross Section 4.0 mm² solar cable
Cable Length 1100 mm
Protection Class / Safety Class Protection class II, fire class A (module)

Certifications & Compliance

Certifications: Designed to comply with core IEC photovoltaic standards for safety, performance, and quality. Modules are tested for hail impact resistance up to 40 mm ice ball diameter according to the manufacturer datasheet.
Inverter Compatibility: Suitable for modern string and central inverters rated for 1500 V DC systems. Standard MC4 compatible connectors and current ratings allow easy integration with leading brands when designed within voltage and current limits.
Environmental: Dual glass construction enhances resistance to moisture, UV, and ammonia rich air. The panel is suitable for typical European outdoor environments when mounted on approved racking systems.
Warranty: 30 year product warranty covering defects in materials and workmanship, plus long term power output warranty. Output is warranted to 99 % after the first year and at least 87.4 % after 30 years, reflecting an average annual degradation rate of about 0.42 %.

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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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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