The technology by cutting and efficiency of photovoltaic panels

The technology half cut is an innovative process through which each photovoltaic cell is divided into two equal parts. This practice reduces electrical resistance and increases the production of panel energy. This is a solution to some of the major challenges of photovoltaic technology: performance in low light and efficient conditions in conditions of partial shading.

Do you want to find out more about this innovative technology? In the following chapters, you can find out how photovoltaic panels work with technology by cutting technology, how to choose them correctly, what is the impact of this technology on the costs of photovoltaic panels and many others.

How do photovoltaic panels work with technology halfway through cutting?

Photovoltaic panels with mid -cut technology work on the same principle of conversion of solar energy in the electricity of traditional panels, but with an architecture optimized for greater efficiency. This technology divides each solar cell into two equal parts, reducing energy losses and improving general performance.

ACCT:
• Instead of using standard solar cells, the half -cut panels use cells by cutting;
• a traditional cell of 156 × 156 mm is cut in two, resulting in two cells lower than 156 × 78 mm;
• The panel is divided into two separate electrical sections, each with half of the total current compared to a standard panel.

The advantages of technology by cutting in terms of efficiency of photovoltaic panels

Half cut technology (or half cell) influences the efficiency of photovoltaic panels through different mechanisms that improve their performance and reliability:

Reduce power leaks from the Joule effect

Semi-cut technology offers a significant advantage in the efficiency of photovoltaic panels by reducing energy losses caused by the Joule effect. By dividing the solar cells into two halves, the electric current that circulates through them is half, which reduces the generation of heat and implicitly the losses of power. This aspect contributes to maintaining a high performance, especially in large installations in which the efficiency of each module contributes significantly to the total production of energy.

Increase efficiency in partial shading conditions

Another great advantage of the panels by cutting is the increase in performance in partial shading conditions. The special design of the panel divides the electrical circuit into two independent parts, which means that if an area of ​​the panel is covered by the shade, the other half can continue to generate electricity without significant losses. This makes them much more efficient in environments where sun exposure is not constant or in which there may be obstacles that could create shadows areas.

Made higher at high temperatures

In addition, semi-cut technology guarantees improved performance at high temperatures. The smaller thermal losses, due to the low electric current, allow panels to work more efficiently in hot climates, where high temperatures can reduce the yield of standard photovoltaic modules. This is particularly useful in many solar regions, in which solar panels must maintain a stable energy production even in extreme temperature conditions.

Improved durability and greater mechanical resistance

The duration and mechanical resistance are also factors that contribute to the general efficiency of the panels by cutting. Since smaller cells exert a reduced mechanical pressure on the surface of the panel, the risk of microfis decreases. This makes them more reliable and longevive, reducing the need for frequent maintenance and increasing the operational life of the photovoltaic system.

The greatest general efficiency of the photovoltaic system

Since energy losses are reduced to a minimum and energy efficiency is optimized, these panels can produce, on average, with 2-3% more energy than traditional models. This growth may seem modest in terms of a single panel, but in an extensive photovoltaic system, the difference becomes significant and contributes to a faster recovery of the initial investment. [1]

Do you want to know more about technology behind the photovoltaic panels?

How to choose correct photovoltaic panels with technology halfway through cutting

The correct choice of photovoltaic panels with technology halfway through the cut involves the analysis of the technical specifications to ensure high efficiency, duration and performance optimal. Below are the main criteria that you need to consider.

1. Nominal power

The nominal power of the panels by cutting panels usually varies between 350 W and 700 W, depending on the size and technology used. If you have a limited space for installation, you need to opt for panels with a higher power per unit (W/m²), in order to maximize energy production.

2. The efficiency of the conversion

The efficiency of a photovoltaic panel with technology by cutting technology represents the percentage of solar energy converted into electricity. The typical values ​​are between 20% and 22.5%. The greater efficiency, the greater the energy it can produce on a small surface. Choose panels with high efficiency, especially if you have a roof or ground with limited space.

3. The temperature coefficient

Panel performance decrease with the increase in temperature. The temperature coefficient expresses the decrease in the power of the panel for each degree greater than 25 ° C. A lower temperature coefficient (for example -0.35%/° C) indicates better performance in hot climates, which makes the panels more efficient in the high temperature regions.

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An advantage of technology by cutting is to improve shadow resistance, but not all panels have the same optimized design. Check if the panel is divided into two or three independent segments and if it uses the bypass diode to minimize energy losses in partial shading conditions.

5. The type of photovoltaic cells (per per vs topcon vs. hjt)

The panels half cut can use different types of solar cells and their choice affects general performance:
1. Per (rear contact passed) – the most common technology that increases the efficiency of photovoltaic panels, at low cost.
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3. HJT (Eterojunction technology) – The most advanced and efficient, but more expensive.
If the budget allows you, the Topcon or HJT panels offer the best long -term performance.

6 .. Voltage and operational current (VMP and IMP)

For compatibility with inverters and power optimizers, check the specifications:
1. Maximum operating voltage (VMP): it must be compatible with the chosen inverter.
2. Maximum operational current (IMP): influences the sizing of cables and fuses.
For example, a 400 W panel can have VMP ≈ 40 V and IMP ≈ 10a. It is important that the panels are chosen so that they are optimized for the photovoltaic system.

7. Reliability and guarantee

Check the manufacturer's guarantee!
Product guarantee: 10-15 years for materials and the production of panels.
Warranty for performance: 25-30 years, with a degradation of a maximum of 0.5% per year.
Premium manufacturers offer longer guarantees and additional certifications for quality and duration.

8. International certifications and standards

To ensure that the panels comply with international standards, check the following certifications:
• IEC 61215 – tests the duration and performance of the panel in extreme conditions;
• IEC 61730 – guarantees electrical safety;
• ISO 9001 and 14001 – certifies the quality of the production and sustainability of the environment;
• Tüv Rheinland & EC – shows tests by independent bodies.

The impact of technology by cutting on the costs of photovoltaic panels

Half cut technology influences the costs of photovoltaic panels in different ways, both from the point of view of the initial purchase price and long -term operating costs. Although these panels can have a slightly higher price than traditional ones, the benefits regarding efficiency and durability can lead to significant savings during the photovoltaic system.

Initial purchase cost

The panels halfway are generally more expensive than 5-10% than traditional cells, due to the more complex production process. Cut the cells into two requires advanced equipment and additional processes for their group and interconnection. In addition, the use of more resistant materials and the optimization of electrical circuits can increase production costs. However, the increase in efficiency and efficiency justify the largest initial investment, since these panels generate more energy per square meter than conventional models.

Installation costs and auxiliary equipment

Since the panels by cutting are more effective, a lower number of panels may be needed to produce the same amount of energy as a traditional system. This can reduce the costs associated with the assembly structure, cables and work. However, in some cases, the reduced electricity of the panels may require the use of compatible solar and optimizing inverters, which can influence the final price of the system. In general, the panels by cutting are helping to reduce the costs for watts installed, making the entire long -term system more profitable.

Operating and maintenance costs

The technological panels halfway through the cut are more resistant and more resistant to degradation factors such as microfides and losses caused by high temperatures. This means that they require less maintenance and repairs during the system, which reduces operating costs. In addition, due to a slower degradation of the slower performance (less than 0.5% per year), these panels can maintain high energy production, maximizing long -term economies. [2]
Investment profitability (ROI)
Although the initial cost of the panels by cutting can be higher, their improved surrender and the reduction of energy losses lead to a faster recovery of investment. Depending on the position and conditions of use, the systems based on this technology can generate the year to 2-3% more energy, which translates into further savings on electricity invoice. On average, investment recovery for panels by cutting can be faster than 1-2 years compared to conventional panels.

See more on the return on investment: cost-benefit analysis of photovoltaic systems!

Due to these advantages, the panels halfway through the cut are a favorite choice than the traditional ones, offering greater energy efficiency, better mechanical resistance and better performance in conditions of shading and high temperatures.

source

[1] Diallo, Kofi. «Are the long-term solar panels in the long term? -William Kwamba.» William Kwamba, 9 September 2025, Williamkamkwamba.com/half-cell-solar-panels/. Access to January 29, 2025.
[2] A, Lead. «What leads to the degradation of the solar panels (Guide 2023)?» What leads to the degradation of the solar panels (Guide 2023)?, 2023, www.maysunsolar.eu/blog/what-leads-to-degration-of-solar-panels-2023-guide. Access to January 29, 2025.