Sun Earth East Solar 405W
Sun Earth East Solar 405W
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SKU  PES-SPS-SOL-18727

Sun Earth East Solar 405W

Sun Earth East Solar 405W

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Unlimited lifetime support, always available.

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Power Rating 405W

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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.

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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.

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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.

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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.

Sun Earth East Solar 405W Monocrystalline 108-Cell Monofacial Solar Panel

Model 405W | Monocrystalline Silicon | 108 Half-Cell Layout | Monofacial | 1500V System Voltage

405 W
Max Power Output
20.7%
Module Efficiency
108
Monocrystalline Cells

Product Overview

The Sun Earth East Solar 405W monocrystalline solar panel is engineered for reliable high output in modern residential and commercial systems. With a rated maximum power of 405 watts and module efficiency up to 20.7 percent, this panel delivers strong performance even where roof space is limited. Its refined cell layout with 108 monocrystalline cells supports stable energy production across a wide power range from 400 to 415 watts. A robust 25 year and 30 year power warranty structure, combined with a low annual degradation rate of around 0.63 percent, helps secure predictable long term yields. The module is built around a durable anodized aluminium frame, 3.2 millimetre tempered glass, and IP68 junction box protection to withstand demanding outdoor environments. With a maximum system voltage of 1500 volts and a compact 1722 by 1134 millimetre footprint, the Sun Earth East Solar 405W panel integrates easily with modern inverters and mounting systems. Designed and manufactured in China by Ningbo Sun Earth East Solar Co., Ltd., it offers a dependable balance of performance, durability, and value for grid tied and off grid projects.

Key Benefits

High power in a compact footprint: The 405 watt output and 20.7 percent efficiency allow more energy production per square metre, ideal for roofs with limited area.

Reliable long term performance: A 25 year power warranty at 83.3 percent and 30 year warranty at 81.0 percent support dependable lifetime yields with a controlled degradation profile.

Robust construction for harsh climates: Tempered glass, EVA encapsulation, and an anodized aluminium frame combine with an IP68 junction box for strong resistance to dust, moisture, and mechanical stress.

Wide operating temperature range: The panel operates between minus 40 and 85 degrees Celsius, with optimized temperature coefficients for Voc, Isc, and Pmax to protect performance in hot or cold weather.

Versatile system integration: A maximum system voltage of 1500 volts and 4 square millimetre cables support longer strings and efficient connection to a wide range of inverters and balance of system components.

Proven manufacturer: Produced by Ningbo Sun Earth East Solar Co., Ltd. in China, the module benefits from established manufacturing experience and quality focused processes.

How It Works

This monocrystalline module converts sunlight into usable electrical energy through high efficiency photovoltaic cells. When sunlight hits the 108 monocrystalline cells, photons are absorbed and an electric field is created across each cell. Direct current then flows through the internal cell interconnections and busbars, before leaving the panel through the factory fitted cables and junction box. The rated maximum power of 405 watts is reached under standard test conditions with the module operating at its Vmpp and Impp values. In a complete system, the generated direct current is routed to an inverter, which converts it into alternating current suitable for household loads or grid export. The optimized voltage window and current characteristics help in building longer strings that match inverter inputs while keeping electrical losses under control. The durable mechanical design and wide temperature range maintain this energy conversion process reliably over decades of outdoor exposure.

Monocrystalline energy conversion: Each cell uses high purity monocrystalline silicon to create a consistent crystal structure that supports efficient electron flow. This structure improves conversion efficiency compared with older multicrystalline technologies and helps the panel reach up to 21.3 percent efficiency within the stated power range.

Optimized electrical operating point: Under standard conditions, the module delivers its rated 405 watts at around 31.2 volts and 12.97 amps. System designers use these Vmpp and Impp values to size strings and inverters so that energy harvest is maximized across typical daily and seasonal irradiance patterns.

Temperature and degradation management: Power output naturally changes with cell temperature, so the module uses controlled temperature coefficients to limit performance loss at higher temperatures. A low total degradation rate, supported by long warranty terms, ensures that the power curve declines gradually over time rather than dropping sharply during early years.

Technical Specifications

Brand / Seller Ningbo Sun Earth East Solar Co., Ltd.
Country of Origin China
Module Type Monocrystalline, monofacial photovoltaic module
Power Range 400 Wp to 415 Wp
Nominal Maximum Power (Pmax) 405 Wp at STC
Voltage at Maximum Power (Vmpp) 31.2 V (405 W version)
Current at Maximum Power (Impp) 12.97 A (405 W version)
Open Circuit Voltage (Voc) 37.2 V (405 W version)
Short Circuit Current (Isc) 13.85 A (405 W version)
Panel Efficiency Range 20.5 % to 21.3 % (20.7 % typical)
Additional Pmax Variant 306.38 Wp, Vmpp 28.81 V, Impp 10.63 A, Voc 34.85 V, Isc 11.26 A
Power Tolerance 0 to +1 % positive tolerance only
Total Degradation Rate Approximately 0.63 % per year over warranty period
Nominal Operating Cell Temperature 45 ± 2 °C
Operating Temperature Range −40 °C to +85 °C
Temperature Coefficient of Pmax −0.35 % per °C
Temperature Coefficient of Voc −0.275 % per °C
Temperature Coefficient of Isc +0.045 % per °C
Maximum System Voltage 1500 V DC
Panel Dimensions (H × W × D) 1722 × 1134 × 30 mm
Weight 21 kg per module
Cell Count and Type 108 monocrystalline silicon cells
Glass Type and Thickness 3.2 mm tempered glass
Encapsulant Material EVA (ethylene vinyl acetate)
Frame Material Anodized aluminium frame
Junction Box Protection Class IP68 rated junction box
Cable Cross Section 4 mm² solar cable

Certifications & Compliance

Certifications: Module certification details are typically aligned with mainstream IEC and safety standards; please confirm the exact certification set with the latest manufacturer documentation.
Inverter Compatibility: Suitable for most modern string and central inverters that accept 1500 V DC systems and are sized correctly for the panel voltage and current ratings.
Environmental: Designed for outdoor installation with IP68 junction box protection and materials selected for resistance to UV exposure, moisture, and mechanical loads.
Warranty: Power warranty of 25 years at 83.3 percent output and 30 years at 81.0 percent output, supported by a low annual degradation rate around 0.63 percent; product warranty terms may vary by region and distributor.

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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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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