TOPCon Vs PERC Solar Panels: Which is better in 2026?
Of late, TOPCon Vs PERC solar technologies are most discussed topic in the solar industry. Tunnel Oxide Passivated Contact (TOPCon) is higher-performing solar cell technology, while Passivated Emitter and Rear Cell (PERC) is a less expensive solar module. When it comes to choosing the best one between TOPCon Vs PERC solar technology, one must go deep into their merits and disadvantages. ance electrical conductivity.
TOPCon Vs PERC solar technology
TOPCon technology uses an advanced oxide layer to minimize energy loss while PERC uses a reflective layer to the back of a standard cell. TOPCon uses superior efficiency, better heat tolerance, and less degradation, though it typically costs slightly more, whereas PERC has a layer that minimizes electron loss and reflects unused sunlight back through the silicon, increasing overall energy generation and efficiency.
When it comes to choosing one between TOPCon Vs PERC solar, generally industry is weighing more on TOPCon technology than PERC. PERC technology has been used by the solar industry for years, while TOPCon technology has been emerging as the latest next-generation solution with higher efficiency and improved performance.
PERC Technology: What is it?
By adding a passivation layer to the back of the cell, PERC (Passivated Emitter and Rear Cell) technology enhances traditional solar cells. This increases energy absorption and boosts efficiency by reflecting unused sunlight back into the cell.
PERC Solar Cells' Benefits
· Reputable and extensively used technology
· Economical production
· Higher efficiency when compared to traditional cells
· Fit for both business and residential uses
PERC's limitations
· Increased energy loss at higher temperatures
· There is a substantially greater decline in performance over time.
· Limited room for more efficiency gains
What is TOPCon Technology?
It is a cutting-edge solar
Tunnel Oxide Passivated Contact, or TOPCon, is a cutting-edge solar cell technique intended to increase efficiency and lower energy losses. To enhance electron mobility and reduce recombination losses, it employs a doped polysilicon layer and an ultra-thin oxide layer.
TOPCon Solar Cells' Benefits
· Increased efficiency of conversion
· Improved performance in low light
· In hotter areas, a lower temperature coefficient improves output.
· Longer operational life and improved durability
· Degradation rates are lower than those of PERC.
Why TOPCon is Becoming More Well-Known
Due to their superior long-term performance and increased power output, TOPCon modules are growing in popularity. They work particularly well in areas with high temperatures, commercial rooftops, and utility-scale installations.
TOPCon vs PERC: Key Comparison
Feature | PERC | TOPCon |
Efficiency | High | Higher |
Temperature Performance | Good | Excellent |
Degradation Rate | Moderate | Lower |
Low-Light Performance | Good | Better |
Lifespan | Standard | Longer |
Cost | Lower Initial Cost | Higher Initial Cost but Better Long-Term Value |
Which Technology Is Best for You?
PERC modules are still a great option if you’re searching for a dependable and affordable solution. However, TOPCon technology is becoming the go-to choose for solar energy in the future due to its increased efficiency, greater long-term performance, and enhanced energy generation.
TOPCon is anticipated to play a significant part in promoting greater energy efficiency and sustainability globally as the solar sector advances toward cutting-edge technologies.
Indosol Solar Uses TOPCon Technology
Indosol Solar in its integrated facility located at Ramayapatnam in Andhra Pradesh uses TOPCon Technology for producing Solar modules. Indosol Solar uses G12R N-Type TOPCon Bifacial Solar Cells for efficient power output. G12R solar cells are advanced rectangular-format photovoltaic cells based on the 210 mm wafer platform. These cells are widely used in high-efficiency N-Type TOPCon solar modules for utility-scale and rooftop applications.
About Indosol Solar
Indosol Solar Pvt. Ltd. is the solar PV Manufacturing arm of Shirdi Sai Electricals Limited (SSEL). It is spearheading India’s Renewable Energy mission by developing fully vertically integrated giga-scale solar PV manufacturing ecosystem, spanning the entire value chain from quartz to high efficiency solar photovoltaics modules. It has commenced operations with a 500MW module manufacturing facility at Ramayapatnam in Andhra Pradesh. It is rapidly scaling up and aims to achieve 10GW of integrated solar PV manufacturing capacity by 2027.