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GSTAR 440W Solar Panel 108 Cell All-Black Bifacial GSD7S54T-440BT Commercial 806 panels per Container (Truckload)

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(30 ratings)

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Customer reviews & Questions

Verified buyer reviews
Customer Reviews
  • Reviews (30)
  • Questions (3)
matthew
05/10/2025
you pay a little more, but you get more. simple
Jordan Brooks
11/14/2024
They take the heat no problem. Still hitting over 400W mid-summer.
joseph-marc Dupont
06/10/2025
Wheres GStar based ?
A1 SolarStore
GStar Solar is an international solar manufacturer — you can check certifications with your local distributor.
ricky
05/15/2025
whats topcon mean
A1 SolarStore
It’s a next-gen tunnel oxide passivated contact tech that boosts efficiency and lowers degradation.
William Evans
01/25/2025
Can I use these near the ocean
A1 SolarStore
Yes, but we recommend proper grounding and anti-corrosion mounting for salty environments.

Specification

Length67.8in
Width44.65in
Rated Power Output 440 W
Voltage (VOC)38.87V
Maximum String Voltage 1500V
Number of cells108
Cell TypeMonocrystalline
Rated Efficiency22.53%
Connector TypeMC4 EVO2
Frame Colorblack
Dimensions LxWxH67.8 x 44.65 x 1.38 in
Weight52.91 lbs
Pallet Qty31
ManufacturerGSTAR
Manufacturer Part #GSD7S54T-440BT
Operating Temperatures −40°F to +185°F
Scope of ApplicationSolar Panels for Buildings
Use
  • Commercial
  • Grid-Tie
  • Off-Grid
  • Residential
Warranty25-year product warranty / 30-year linear power warranty

About product

GSD7S54T-440BT is part of the N-Type Series — one of the most recent made by GSTAR. These panels employ cutting-edge technologies to achieve superior efficiency and reliability. The Topcon N-Type cell technology ensures excellent power output.

Another advantage is the half-cut cell technology. GSD7S54T-440BT has solar cells half the size of those installed in conventional panels. The main benefits are decreased power loss, improved longevity, and better low-light performance. Not surprisingly, the efficiency of this module is quite high – 22.53%. And while conventional panels use only one side to absorb photons, bifacial modules employ both sides at the same time. Thanks to the technology, this model can be up to 30% more efficient. The innovations made the appearance of the panel as impressive as the specs. A mere 1.38" thick, this model is completely black with a smooth surface. This beauty doesn’t compromise the quality or reliability of the panel. GSTAR provides an industry-leading 30-year linear power warranty and a 25-year product warranty.

  • 440 W power output
  • 108 half-cut Topcon N-Type cells
  • 22.53% efficiency
  • 1500 V DC maximum system voltage
  • MC4-EVO2 connectors
  • 25-year product warranty and 30-year linear power warranty

High efficiency of 22.53 percent

GSTAR N-Type panels fully use the firm's innovations, for which GSTAR has received several distinctions. With Topcon N-Type cell technology, more electricity can be produced per square foot of PV modules. As a result, there will be fewer clamps and racks required during installation. All of which lowers your overall expenses and accelerates the payback period.

Heat-resistant performance

The heat is less of a threat with this module: with one of the lowest temperature coefficients in the industry, GSD7S54T-440BT loses just -0.3% of efficiency for every 1.8°F above 77°F.

Quality and reliability

GSD7S54T-440BT is subject to rigorous quality and reliability testing as well as many quality checks throughout the production process. The level of automation in the manufacturing facilities virtually eliminates human error. To guarantee that you receive the finest, GSTAR is committed to quality, safety, and dependability.

Low degradation for a longer lifespan

These panels will lose no more than 1% of their power output in the first year of service. From the 2nd year to the 30th year, the average annual power decline will be no more than 0.4%. The module retains over 87.4% of its original output after 30 years. Guaranteed by GSTAR.

Enhanced frame design

This model's construction makes it perfect for both residential and business rooftops. Durability and strength are increased by using a strong, robust frame built from black anodised aluminium. A significant snow load of up to 5400 Pa may be supported by the model. The panel's back can support 2400 Pa, assuring that even the strongest winds won't damage your system.

Outstanding all-black design

The panel features an all-black design that looks great on any roof. The manufacturer ensures excellent cell color by special treatment and selection processes. GSTAR engineers use thinner wires to connect the cells together, and at a distance, the surface of the modules appears smooth and uninterrupted.

Size

67.8" x 44.65" x 1.38"

Weight

52.91 lb

Authorized GSTAR Distributor

Authorized Distributor Certificate
  • Genuine Products: You’re getting the real deal, backed by the manufacturer’s warranty.
  • Exclusive Offers: You can access promotions, discounts, or bundles that are only available through authorized distributors.
  • Competitive Pricing: We offer the best prices because we source directly from the manufacturer, with no middlemen driving up costs.
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  • Overview
  • FAQ

G-Star Solar Panels for Sale

🌟 High-efficiency N-type and TOPCon solar modules from Singapore's vertically integrated manufacturer

G-Star Pte Ltd, founded in 2019 and headquartered in Singapore, is committed to being a trusted global new energy solution provider with a focus on both PV material manufacturing and PV system services. The company specializes in photovoltaic power generation solutions, realizing vertically integrated R&D, design, production and sales from silicon wafers, cells to modules.

G-Star maintains a global strategy with a "1+N" model, one headquarters in Singapore, with N bases covering the United States, China, India, Mexico, Thailand, Indonesia, Laos, the Philippines, and Egypt. By 2025, G-Star's integrated production capacity in Southeast Asia is expected to reach 3GW, with total capacity reaching 17.5GW.

Why Choose G-Star Solar?

🏭 Manufacturing Excellence

G-Star's PV material manufacturing business primarily focuses on the production and processing of silicon materials, including silicon pulling and N-type silicon wafers, as well as metal materials production, including frames and mounting systems. The company controls every step of production which often means better quality control.

🌏 Global Supply Chain

G-Star Solar has established a "vertically integrated" PV production base with facilities in Thailand, Indonesia, Laos, the Philippines, and Egypt. Since it is a Singaporean brand, extra import tariffs for Chinese solar panels from the American government do not affect them and make the panels more affordable for US citizens.

🔬 Technology Innovation

G-Star offers P-Type modules ranging from 370W-600W with maximum conversion efficiency of 21.5%, and N-Type modules ranging from 390W-630W with maximum conversion efficiency of 22.65%. G-Star solar panels employ p-type cells, n-type cells and NPBC cells.

🏅 Quality Certifications

G-Star solar panels have all the necessary safety certificates for installation, and come with a 25-year product warranty and a 30-year linear power warranty for its modules, with an annual degradation of 0.40% over 30 years.

G-Star Solar Panel Technologies Explained

N-Type vs P-Type Cell Technology

P-type solar cells use boron-doped silicon as their base material and have been the industry standard for decades because they were cheaper to produce and the manufacturing process was well-understood. However, N-type cells offer superior performance with less light-induced degradation and better efficiency retention over time.

TOPCon Bifacial Solar Panels

The gstar 425w topcon bifacial solar panel represents cutting-edge technology in the g star solar lineup. The Gstar GSD7S54T 108 cell panels, 425 bifacials sure look interesting, offering enhanced energy generation from both sides. Users report that the GStar 425W panel is quite good and very light (45 pound).

Advanced Manufacturing Features

At RE+2024 Solar Exhibition, G-Star made a prominent appearance with its full suite of photovoltaic supply chain solutions, showcasing the highly anticipated CleanEdge and LightEdge products, which captured significant attention from attendees.

G-Star vs Competition - Technical Comparison

FeatureG-Star 550WCanadian Solar 550WJinko Solar 575WLONGi Solar 570W
Power Output550W550W575W570W
Cell TechnologyN-Type TOPConPERCTOPConTOPCon
Manufacturing OriginSingapore/SEAAsiaChinaChina
Tariff Risk (US)NoneMediumHighHigh
Product Warranty25 Years12 Years15 Years12 Years
Performance Warranty30 Years25 Years25 Years25 Years

Customer Reviews & Industry Recognition

Real-world gstar solar panel review feedback highlights consistent satisfaction. One customer reported being "extremely happy with installation and performance of my solar" and appreciated that "G star asking if there were any problems and if I was happy with the product".

So far so good. The system pictured is a low stress B&B cottage with basic lighting, ceiling fan, and minifridge. 2kw of east/west panels

4 of these bifacials produce about the same as 6 365 panels

G-Star Group was officially recognized and ranked 467th on the 2024 Global Top 500 New Energy Enterprises list, demonstrating the company's rapid growth and industry recognition.

Frequently Asked Questions

Are G-Star panels affected by US tariffs?

Since G-Star is a Singaporean brand, extra import tariffs for Chinese solar panels from the American government do not affect them, making the panels more affordable for US citizens.

What applications are suitable for gstar solar panels?

G-Star offers solar panels for all kinds of applications: home, business and utility-scale projects. GSTAR panels are versatile and can be used in both residential and commercial systems.

What warranties does G-Star provide?

G-Star Solar offers a 25-year product warranty and a 30-year linear power warranty for its modules, with an annual degradation of 0.40% over 30 years.

What manufacturing capacity does G-Star have?

By 2025, G-Star's integrated production capacity in Southeast Asia is expected to reach 3GW, with total capacity reaching 17.5GW.

Ready to Go Solar with G-Star Panels?

G star solar panels combine Singaporean innovation with Southeast Asian manufacturing efficiency, delivering exceptional value through tariff-free advantages and comprehensive warranties. Whether you're considering the popular gstar 425w topcon bifacial solar panel for commercial applications or exploring residential options, G-Star's vertically integrated approach ensures consistent quality and competitive pricing.

Shop G-Star Panels Today
What is G-STAR Solar?

G-STAR Solar, officially known as G-STAR Pte. Ltd., is a solar photovoltaic (PV) manufacturer founded in 2019 and headquartered in Singapore. The company focuses on providing smart energy solutions globally, specializing in PV material manufacturing and system services.

Where are G-STAR Solar's manufacturing facilities located?

G-STAR Solar has established a "vertically integrated" PV production base with facilities in Thailand, Indonesia, Laos, the Philippines, and Egypt.

What warranties does G-STAR Solar provide for its modules?

G-STAR Solar offers a 25-year product warranty and a 30-year linear power warranty for its modules, with an annual degradation of 0.40% over 30 years.

Are GSTAR Solar panels a good fit for residential or commercial installations?

Yes, GSTAR panels are versatile and can be used in both residential and commercial systems. Their high power density and cost-effectiveness make them popular in utility-scale and industrial projects as well.

Are GSTAR Solar panels compatible with standard inverters and racking systems?

Absolutely. GSTAR panels are built to comply with international standards and work seamlessly with most common inverters, optimizers, and mounting systems.