S-Energy SL65-78BGJ-585S
S-Energy SL65-78BGJ-585S
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SKU  PES-SPS-SOL-16305

S-Energy SL65-78BGJ-585S

S-Energy SL65-78BGJ-585S

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Unlimited lifetime support, always available.

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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.

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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.

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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.

S-Energy SL65-78BGJ-585S 585W Bifacial Monocrystalline Solar Panel

Model SL65-78BGJ-585S | Monocrystalline Bifacial | 156 Half-Cell 182 × 91 mm | Bifacial | 1500V System Voltage

585 W
Max Power Output
20.9%
Module Efficiency
156
Monocrystalline Cells

Product Overview

The S-Energy SL65-78BGJ-585S bifacial monocrystalline solar panel delivers 585 watts of high-efficiency output for demanding commercial and utility projects. This advanced module combines a robust 156-cell layout with bifacial technology to capture light from both sides of the panel. A module efficiency of 20.9% helps maximize power density where roof or ground space is limited. The panel is engineered around a 1500V system voltage, which supports modern large-scale string designs and optimized BOS costs. Its durable tempered glass, anodized aluminium frame and transparent backsheet are designed to withstand harsh weather and high mechanical loads. With strong performance in a wide operating temperature range from -40°C to 85°C, the SL65-78BGJ-585S offers stable production across varied climates. A low power degradation rate and extended power warranty help protect long term energy yields for asset owners. This S-Energy module is an excellent choice for investors and installers seeking reliable, bankable solar performance with bifacial gain potential.

Key Benefits

High 585 W power class: Each module delivers up to 585 Wp, enabling powerful arrays with fewer panels needed.

Bifacial energy gain: Rear side generation boosts total output when light reflects from bright surfaces or ground coverings.

Excellent module efficiency: With 20.9% efficiency, the module achieves strong energy density on rooftops, carports and utility sites.

Robust mechanical design: Tempered anti reflection glass, anodized aluminium frame and 3.2 mm front glass enhance strength and reliability.

Bankable long term performance: A 12 year product warranty and 25 year power warranty support dependable lifecycle energy production.

1500V system compatibility: High system voltage rating allows longer strings, fewer combiner boxes and lower installation costs.

How It Works

The S-Energy SL65-78BGJ-585S solar panel converts sunlight into DC electricity using high efficiency monocrystalline bifacial cells. When the front surface faces the sun, incoming photons are absorbed by the 156 cells and converted into electrical energy. At the same time, the transparent rear side allows additional light reflected from the ground or nearby surfaces to reach the cell rear. This rear side exposure increases total current, enhancing the overall module output under suitable site conditions. The panel operates at a maximum power voltage of 45.5 V and a current of 12.87 A under standard test conditions. Generated DC power then flows through the MC4 compatible connectors and 4 mm² cables into the system DC circuitry and inverter. The module is designed to perform reliably across an operating temperature range from -40°C to 85°C, with carefully controlled temperature coefficients. These coefficients limit performance loss as cell temperature rises, protecting yield in hot climates and on high irradiance days. With a maximum system voltage of 1500 V and a 30 A series fuse rating, the panel integrates smoothly into modern string inverter architectures. This design supports flexible configuration for commercial rooftops, trackers, carports or ground mount arrays where bifacial gain can be utilized.

Front side monocrystalline generation: The front glass side receives direct sunlight, and the monocrystalline cells convert this energy into DC power efficiently. Each cell is optimized for high photon absorption and low resistive losses to maximize output per square meter.

Rear side bifacial gain: The transparent backsheet lets reflected and diffuse light reach the rear of the cells, adding extra current. When the module is installed above bright, reflective surfaces, the rear contribution can significantly improve annual energy yield.

Thermal and electrical stability: Temperature coefficients of -0.35%/°C for Pmax and -0.27%/°C for Voc help limit losses during hot operation. The panel maintains reliable performance within its -40°C to 85°C operating range, supporting consistent output across seasonal extremes.

Technical Specifications

Module Type Monocrystalline bifacial PV module
Model Number SL65-78BGJ-585S
Nominal Power Output (Pmax) 585 Wp
Power Range Series 580 Wp to 600 Wp (SL65-78BGJ-580S to SL65-78BGJ-600S)
Module Efficiency 20.9%
Power Tolerance 0 W to +5 W (0% to +1% typical in product text)
Voltage at Maximum Power (Vmpp) 45.5 V
Current at Maximum Power (Impp) 12.87 A
Open Circuit Voltage (Voc) 53.7 V
Short Circuit Current (Isc) 13.63 A
Bifacial Rear Side Pmax (example) Approximately 614 W under BSTC with rear gain conditions
Nominal Operating Cell Temperature (NOCT) 45 ± 2 °C
Operating Temperature Range -40 °C to +85 °C
Temperature Coefficient of Pmax -0.35 % / °C
Temperature Coefficient of Voc -0.27 % / °C
Temperature Coefficient of Isc +0.04 % / °C
Maximum System Voltage 1500 V DC
Maximum Series Fuse Rating 30 A
Cell Size 182 × 91 mm monocrystalline cells
Cell Count and Layout 156 cells (6 × 26 matrix)
Panel Dimensions (H × W × D) 2465 × 1134 × 40 mm
Panel Weight 31 kg
Front Glass Type Tempered glass with anti reflection coating
Front Glass Thickness 3.2 mm
Backsheet Type Transparent mesh backsheet for bifacial operation
Frame Material Anodized aluminium frame, silver finish
Junction Box Rating IP68 with 3 bypass diodes
Connector Type MC4 compatible connectors
Cable Cross Section 4 mm² (12 AWG) solar cable
Cable Length (+): 1000 mm, (-): 500 mm typical
Design Loads (Snow / Wind) Snow load up to 5400 Pa, wind load up to 2400 Pa

Certifications & Compliance

Certifications: KS C 8561 crystalline silicon photovoltaic module, ISO 9001 quality management, ISO 14001 environmental management, ISO 45001 occupational health and safety.
Inverter Compatibility: Designed for 1500 V DC string and central inverter systems using MC4 compatible connectors and standard DC wiring practices.
Environmental: Tested for high humidity and high temperature conditions, including 85°C and 85% RH, with PID resistance and robust hail and mechanical load performance.
Warranty: 12 year product warranty and 25 year linear power warranty with approximately 85% rated power retained at year 25 under standard conditions.

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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