PERC technology is an abbreviation for passivated emitter and backside cell or passivated emitter and backside contact. That makes PERC solar cells more efficient compared to other cell types; this means that solar panels manufactured with PERC cells can convert sunlight into usable electricity at an effective rate. Solar panels made using PERC technology usually perform better in low-light and high-temperature conditions compared to conventional panels.

How do PERC solar panels work?

PERC solar panels, representing improved silicon cells since their inception in 1989, have an extra layer on the back that reflects unabsorbed light back into the n- and p-type regions of the cell to generate more electricity. This layer also reduces the loss of light energy at the rear of the cell and inhibits the conversion of long-wavelength light into heat, further improving cell performance.

With its toughly challenging photo-degradation since early commercialization, after years of advancement in PERC technology, PERC cells have emerged with 12% more efficiencies in generating electricity than that generated from conventional silicon cells. This allows installers to save time and costs when using PERC panels because fewer panels are needed to achieve the same amount of solar output. When installers use fewer panels, less racking, wiring, and other electronic connections are needed.

For example, in the case of rooftop installation, if a project requires either 40 standard panels or 38 PERC panels to meet the annual power generation requirements, then the use of PERC solar panels will save time and costs due to reduced associated installation materials and equipment.

Comparison of PERC solar panels with other advanced panel technologies (IBC and BSC):

Advantages and disadvantages of PERC solar panels:

Pros:

Reduced requirement for roof space

With their higher efficiency, PERC solar panels require fewer units to design and install, making them fit on smaller areas of the roof.

Improved low-light and high-temperature performance

The PERC technology in solar panels allows it to perform well in high temperatures and low light conditions. This increases the efficiency by around 3%.

Increased energy yield

PERC solar panels are, on average, about 1% more efficient than conventional models. What seems like a small increase in efficiency can yield up to a 5% increase in energy production in the overall PV system.

Reduced balance of system and soft costs

PERC solar panels reduce the number of panels required, which reduces labor and balance-of-system component costs such as inverters, circuit breakers, etc., therefore realizing soft cost reductions.

Cost-effective manufacturing process

The manufacturing cost of PERC panels is the same as that for conventional panels, which explains their popularity and continued growth in the market.

Disadvantages:

High manufacturing costs

The manufacturing process of PERC cells is more complicated and needs some investment in technology and equipment, so the manufacturing cost is relatively high.

Complicated Structure

The structure of the PERC cells is comparatively complicated, involving several processes and a combination of materials, which raises the difficulty and cost of manufacturing to some extent.

Shadow Sensitivity

Compared to conventional solar panels, PERC panels are more vulnerable to shading problems.

Uncertainty of New Technology

Long-term durability and performance might be a little questionable since PERC is a relatively new technology.

How much would investing in PERC panels cost compared to the traditional panels?

Benefits of PERC Technology to Solar Users

Solar panels made using PERC technology offer a higher energy output; thus, the same energy output that you achieve with normal panels can be availed with fewer panels. This will not only reduce your overall costs but also give you more leeway during installation on limited roof space. Additionally, fewer panels reduce the balance of system costs, which includes the inverter, racking, and cabling other than the panels. In short, the high efficiency of PERC panels helps you get more solar energy for less investment.

PERC panels are thought to be more efficient than conventional solar panels, meaning for the same surface area, they will be able to generate more electricity. If you want to maximize your power generation potential, PERC solar panels are something that you may want to use. For more details, contact us for a free consultation!