GreenWatts 450W Bifacial Solar Panel — 144-Cell High-Efficiency PV Module.
GreenWatts 450W Bifacial Solar Panel — 144-Cell High-Efficiency PV Module.
GreenWatts 450W Bifacial Solar Panel — 144-Cell High-Efficiency PV Module.
GreenWatts 450W Bifacial Solar Panel — 144-Cell High-Efficiency PV Module.
GreenWatts 450W Bifacial Solar Panel — 144-Cell High-Efficiency PV Module.
GreenWatts 450W Bifacial Solar Panel — 144-Cell High-Efficiency PV Module.
GreenWatts 450W Bifacial Solar Panel — 144-Cell High-Efficiency PV Module.
GreenWatts 450W Bifacial Solar Panel — 144-Cell High-Efficiency PV Module.
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GreenWatts 450W Bifacial Solar Panel — 144-Cell High-Efficiency PV Module

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Description

High-Efficiency Bifacial Solar Panel for Maximum Energy Generation

Maximize your solar energy production with the GreenWatts 450W Solar Panel (Model HT72-166M-450W) — a high-efficiency bifacial photovoltaic module designed for residential, commercial, and off-grid solar installations. Featuring cutting-edge PERC technology, half-cut cells, and a bifacial design, this panel delivers excellent performance, durability, and long-term energy output. 

Key Features & Benefits

450 Watts of Rated Power
Generates up to 450W of clean solar power, offering a strong balance of output and panel size for a wide range of solar system applications. 

Bifacial Energy Boost
The bifacial design allows the panel to absorb sunlight from both front and rear sides, capturing reflected light for increased total energy yield especially when installed over high-albedo surfaces. 

144 Half-Cut Monocrystalline Cells
Built with high-efficiency 144 half-cut cells and advanced PERC technology, this module reduces resistive losses and enhances performance under low-light and partial shade conditions. 

Impressive Efficiency (~20.7%)
High module efficiency helps you produce more power per square meter, making this panel a great choice for space-optimized installations. 

Rugged, Weather-Resistant Construction
Designed to withstand challenging environments with:

  • 5400 Pa snow load resistance

  • 2400 Pa wind load resistance
    It’s built for years of reliable outdoor performance.

Long-Term Warranty Coverage
Backed by a 25–30-year product warranty and a 30-year linear power output warranty, ensuring sustained performance and peace of mind. 

Wide System Compatibility
Engineered for systems up to 1500 V DC, this panel works with most modern grid-tie, hybrid, and battery-backed solar inverters. 

Typical Specifications

Specification Details
Model HT72-166M-450W
Rated Power (Pmax) 450 W
Cell Type Monocrystalline (half-cut PERC cells)
Number of Cells 144
Module Efficiency ~20.7%
Open Circuit Voltage (Voc) ~50 V
Maximum System Voltage 1500 V DC
Connector Type MC4-EVO2 / MC4-compatible
Frame Color Silver
Dimensions ~82.44 × 40.87 × 1.38 in
Weight ~51.81 lb
Warranty 25–30 year product & power output warranty


Ideal For

✔ Residential rooftop solar systems
✔ Commercial and industrial installations
✔ Ground-mounted solar arrays
✔ Solar + battery hybrid systems
✔ Projects leveraging bifacial gain

Why Choose the GreenWatts 450W Bifacial Panel?

This GreenWatts panel delivers excellent performance at a competitive price with strong energy production, enhanced efficiency from its bifacial design, and long-term durability backed by an industry-standard warranty. Its high power rating and reliable construction make it a smart choice for both installers and DIY solar system builders.

Document: Specification Sheet

What is a Bifacial Solar Panel?

The Bifacial Solar Panel is a cutting-edge solar technology designed to capture sunlight from both sides. This means it can utilize indirect sunlight reflecting off surfaces like the ground, significantly increasing energy output. The GreenWatts 450W model features 144 cells that maximize efficiency, making it one of the top choices for both residential and commercial applications. Because of this unique design, these panels can produce up to 30% more energy compared to traditional monofacial panels.

Durability and Longevity

Durability is essential in solar panel selection. The GreenWatts Bifacial Solar Panel is built to withstand harsh weather conditions, including hail and high winds. It meets rigorous standards for durability, ensuring a lifespan that can exceed 25 years. Because longevity reduces the need for replacements, installing these panels is a practical investment in your energy independence. Solar panels like this are not only robust but also cost-effective over time.

Environmental Benefits of Solar Energy

Utilizing the GreenWatts Bifacial Solar Panel contributes to a cleaner and greener planet. Renewable energy sources like solar power reduce reliance on fossil fuels, decreasing harmful emissions. Furthermore, the increased efficiency of bifacial technology allows for more energy generation on smaller footprints. Therefore, investing in solar technology helps save the environment while also saving on energy bills. By choosing these panels, you're making a significant commitment to sustainable energy solutions.


Care

Caring for your clothes is also caring for the environment.

To keep your clothes fresh and clean, simply refresh them and gently wipe with a cloth or clothing brush. This is a more delicate process for fabrics and helps avoid water and energy consumption from washing.

  • Hand wash at a temperature not exceeding 30ºC / 86ºF
  • Do not use bleach or brighteners
  • Iron at a temperature not exceeding 110ºC / 230ºF
  • Do not dry clean
  • Do not tumble dry
Shipping & Returns
  • Free shipping on orders over $50
  • Standard delivery within 2–5 business days
  • Easy 30-day returns
  • Return items in original condition for a full refund
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Easy 30-day Returns

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Standard delivery within 2–5 business days

Return items in original condition for a full refund

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We had a fantastic experience with Solar Cellz USA. Their team provided outstanding service, ensuring our products were delivered in a timely manner. Communication was clear throughout the process, and we appreciated their commitment to keeping everything on schedule. It’s refreshing to work with a company that values both quality products and great customer service. Highly recommend!

— Nate Benitez

ABC Supply

Top-Notch Sourcing for Hard-to-Find Panels! Solar Cellz USA went above and beyond to help us source American-made solar panels that were incredibly difficult to find. Their team worked diligently to track down exactly what we needed, and their commitment to finding quality products really stood out. It’s rare to find a company with both great service and strong industry connections — Solar Cellz USA delivered on both. Highly recommend them for anyone needing specialty or hard-to-find solar products.

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Pisgah Energy

Exceptional Product Knowledge and Expertise! Our experience with Solar Cellz USA has been outstanding, particularly when it comes to their deep knowledge of SMA inverter products. Their team demonstrated impressive expertise, answering all our questions and providing valuable insights to help us choose the right solutions for our needs. It’s clear they understand the products inside and out, which gave us confidence in our purchase. If you’re looking for a supplier that truly knows their equipment, Solar Cellz USA is the way to go.

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Lockheed Martin