When investing in solar, panel choice is one of the biggest decisions you’ll make. Over the past few years, bifacial solar panel technology has emerged as one of the most exciting innovations in the industry. Unlike traditional monofacial panels that only capture sunlight from the front, bifacial panels are designed to harness energy from both sides—meaning they can convert not only direct sunlight but also reflected light from surfaces like your roof, driveway, or the ground below.

For Queenslanders, where sunshine is abundant and energy prices are soaring, bifacial panels are proving to be a smart investment that delivers greater efficiency, longer-lasting performance, and a faster return on investment.

But not all bifacial panels are created equal. At the heart of these panels are solar cells, and there are three main technologies competing for market share: PERC (Passivated Emitter Rear Contact), TopCon (Tunnel Oxide Passivated Contact), and HJT (Heterojunction). Let’s break down what sets them apart, and why HJT—used in the Fusion R panels—is the premium choice for homeowners and businesses in Queensland.

PERC Technology: The First Step in Bifacial

PERC has been the workhorse of the solar industry for several years. It improved upon earlier cell designs by adding a passivation layer at the rear of the cell, which helps reflect some of the light that passes through, giving the cell a small efficiency boost.

Strengths of PERC

• Affordable upfront cost
  
  
• Widely available in the market
  
  
• Familiar technology with proven results
  
  

Limitations of PERC

• Lower efficiency compared to newer technologies
  
  
• Performance degradation over time
  
  
• Less suited for buyers seeking long-term energy optimisation
  While this was a breakthrough a decade ago, PERC technology has largely peaked. For buyers chasing the lowest upfront cost, PERC may still look attractive—but for serious long-term energy savings, better options now exist.
  
  

TopCon Technology: A Stronger Contender

TopCon emerged as the next step up from PERC. These cells use a tunnel oxide layer and passivated contacts, which improve electron flow and reduce energy loss. In real-world terms, TopCon bifacial panels achieve higher efficiencies than PERC and offer better performance in Queensland’s high temperatures.

Advantages of TopCon

• Higher efficiency than PERC
  
  
• Improved durability
  
  
• Better performance in hot weather conditions
  
  

Limitations of TopCon

• Still based on older crystalline silicon designs
  
  
• Susceptible to issues like PID (Potential-Induced Degradation) and LID (Light-Induced Degradation)
  
  
• Good but not game-changing
  TopCon is a strong mid-range option, but it doesn’t fully overcome the weaknesses of older solar cell designs.
  
  

HJT Technology: The Premium Choice

This is where HJT—Heterojunction Technology—sets itself apart. HJT cells combine two different types of solar cell materials: crystalline silicon and thin-film amorphous silicon. This hybrid design delivers superior efficiency, stability, and long-term durability. Unlike PERC or TopCon, HJT cells are naturally bifacial, with both sides of the panel optimised for capturing sunlight and reflected light.

Why HJT Outperforms PERC and TopCon

• Higher efficiency per square metre: Generates more energy in a limited space.
  
  
• Superior hot-weather performance: Low temperature coefficient ensures consistent output in Queensland summers.
  
  
• Minimal degradation: Retains more of its original capacity over 25+ years.
  
  
• Naturally bifacial: Optimised for dual-sided energy capture.
  For Queensland’s climate—where extreme heat and high solar exposure are everyday realities—HJT offers unmatched reliability and performance. Over the lifespan of your system, this means thousands of extra kilowatt-hours, directly reducing your reliance on the grid.

Why Fusion R with HJT is a Game Changer

The Fusion R solar panel leverages HJT to deliver maximum performance and peace of mind. With industry-leading efficiency and dual-sided energy capture, Fusion R isn’t just about producing more energy—it’s about producing more value from every ray of Queensland sunshine.

Benefits for Businesses

• Lower operating costs
  
  
• Stronger sustainability credentials
  
  
• Protection against rising energy prices
  
  

Benefits for Homeowners

• Lower power bills
  
  
• Increased property value
  
  
• Long-lasting solar investment with minimal degradation
  Fusion R makes premium solar technology accessible, ensuring your system works harder for you every day.

Why Trust REA Solar in Queensland?

Choosing the right solar panels is important, but choosing the right installer is just as critical. At REA Solar, we don’t just sell panels—we design and install tailored solar solutions that are built to perform in Queensland’s unique conditions.

Why Queenslanders Choose REA Solar

• Expert advice from a trusted local team
  
  
• Professional installation backed by years of experience
  
  
• Premium technologies like Fusion R with HJT
  
  
• Ongoing support for long-term system performance
  With a reputation for honesty, quality, and innovation, REA Solar has helped thousands of homes and businesses take control of their energy future.
  
  

Make the Switch Today

If you’re considering solar, now is the time to explore bifacial technology—and if you want the very best, HJT panels like Fusion R should be at the top of your list. Don’t settle for yesterday’s technology when you can future-proof your energy with the most advanced panels available.

Call 1300 360 047 today or contact REA Solar online to find out how Fusion R with HJT can transform your home or business. With REA Solar, you’re not just investing in solar—you’re investing in a brighter, more efficient future.