BYD MSBK-33 660
BYD MSBK-33 660
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BYD MSBK-33 660

BYD MSBK-33 660

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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.

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.

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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.

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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.

BYD MSBK-33 660W Mono Bifacial Dual Glass Monocrystalline Solar Panel

Model MSBK-33 660 | Mono Bifacial Dual Glass | 132 Monocrystalline Cells | Bifacial | 1500V System Voltage

660 W
Max Power Output
21.26%
Module Efficiency
132
Monocrystalline Cells

Product Overview

The BYD MSBK-33 660W mono bifacial dual glass monocrystalline solar panel delivers high power density for modern commercial and utility scale systems. Designed around advanced 210 mm cells and bifacial technology, it offers a front side rated output of 660 W under standard test conditions and a module efficiency up to 21.26%. The dual glass structure increases durability, while bifacial generation boosts overall energy yield on reflective surfaces. This panel belongs to BYD’s MSBK-33 645–675 W family and is engineered to balance high output, reliability, and long term performance. With a 1500 V system rating, robust mechanical design, and optimized low light behavior, it suits ground mount, tracker, and large rooftop projects where every watt matters.

Key Benefits

High power density for large arrays: Rated at 660 W, this module reduces required string counts and balance of system hardware for many layouts. Higher power per module supports more compact designs and can simplify installation on constrained sites.

Bifacial energy gain on reflective surfaces: The bifacial dual glass design allows light capture from both sides, delivering additional energy yield where ground or roof surfaces provide albedo. System owners can benefit from power gains of roughly 5–25% in well optimized installations, lowering long term energy costs.

Durable dual glass construction: A dual glass module structure enhances mechanical strength and environmental resistance across varied climates. It supports high front and rear mechanical load capacity, making it suitable for exposed, high wind or snowy sites where reliability is essential.

Stable performance in real world climates: With a low temperature coefficient of power at around -0.328% per degree Celsius, output is maintained more effectively in hotter conditions. The operating temperature range from -40 °C to 85 °C supports projects in both cold and hot regions worldwide.

Bankable long term warranties: A 12 year product warranty and 30 year linear power warranty back the long life design of this panel. The guaranteed performance curve limits total degradation to 83.5% of initial output at year thirty, helping project owners forecast revenue with confidence.

How It Works

This BYD MSBK-33 660W mono bifacial dual glass module converts sunlight into usable DC electricity using high efficiency monocrystalline cells. Each cell uses the photovoltaic effect to create current when photons strike the silicon junction. The panel’s bifacial architecture captures irradiance from both the front and rear surfaces, so both direct sunlight and reflected light from the ground contribute to the output. Under standard test conditions, the module delivers a maximum power of 660 W with a voltage at maximum power near 38.04 V and current at maximum power around 17.36 A. In real world operating conditions defined by NMOT, the module still maintains strong output with a rated power of about 493.8 W. The generated DC power is then routed through string cabling to a suitable inverter, which converts it into AC power for on site loads or export to the grid.

Monocrystalline cell conversion: High purity monocrystalline silicon cells form the core energy conversion layer within the module. When sunlight hits these cells, charge carriers are generated and directed to produce a steady DC current with high efficiency and strong low light behavior.

Bifacial dual glass architecture: The panel features transparent glass on both sides, enabling the rear side to harvest reflected light from the surroundings. This bifacial effect increases total energy yield compared with similar monofacial modules, especially on bright, reflective ground or optimized mounting structures.

System integration and performance: With a 1500 V DC maximum system voltage and a 35 A series fuse rating, the module integrates easily into modern high voltage strings. Its stable temperature coefficients and broad operating temperature range help maintain predictable performance when linked to mainstream inverters and single axis trackers.

Technical Specifications

Module Brand / Manufacturer BYD Company Limited
Model Name MSBK-33 660
Technology Type Mono bifacial dual glass monocrystalline
Power Range Series 645 W to 675 W module family
Maximum Power (Pmax, STC) 660 W
Power Tolerance 0 to +0.5% (0 to +5 W)
Module Efficiency (STC) 21.26%
Voltage at Maximum Power (Vmpp, STC) 38.04 V
Current at Maximum Power (Impp, STC) 17.36 A
Open Circuit Voltage (Voc, STC) 45.72 V
Short Circuit Current (Isc, STC) 18.24 A
Rated Power at NMOT (Pmax) 493.8 W
Voltage at Maximum Power (Vmpp, NMOT) 35.40 V
Current at Maximum Power (Impp, NMOT) 13.95 A
Open Circuit Voltage (Voc, NMOT) 42.90 V
Short Circuit Current (Isc, NMOT) 14.71 A
Nominal Module Operating Temperature (NMOT) 45 °C ± 2 °C
Operating Temperature Range -40 °C to +85 °C
Temperature Coefficient of Pmax -0.328% / °C
Temperature Coefficient of Voc -0.254% / °C
Temperature Coefficient of Isc +0.041% / °C
Maximum System Voltage 1500 V DC
Series Fuse Rating 35 A
Bifacial Factor (Typical) 70% ± 5%
Cell Type and Size 210 mm monocrystalline silicon cells
Number of Cells 132 cells
Module Dimensions (H × W × D) 2384 mm × 1303 mm × 35 mm
Weight per Module 38.7 kg
Front Glass Type Anti reflection coating glass
Glass Thickness 2 mm
Frame Material Anodized aluminium alloy frame
Junction Box Diodes 3 diodes integrated
Junction Box Protection Class IP rated weather protection

Certifications & Compliance

Certifications: IEC 61215-1, IEC 61215-1-1, IEC 61215-2, IEC 61730-1, IEC 61730-2, UL 61730-1, UL 61730-2, Fire Safety Class C.
Inverter Compatibility: Designed for high voltage 1500 V DC systems and compatible with mainstream string inverters and single axis trackers used in commercial and utility scale plants.
Environmental: Suitable for harsh environments including ammonia exposure, high mechanical loads up to utility grade standards, and a wide ambient temperature range from -40 °C to 85 °C.
Warranty: 12 year product workmanship warranty plus 30 year linear power warranty, with maximum annual degradation of 0.55% and a guaranteed minimum of 83.5% of initial power at year 30.

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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