Will String Inverters be Replaced in the Future?

With the rapid development of the photovoltaic market, microinverters are gradually becoming the mainstream choice. In the past, string inverters were the primary option for residential and commercial PV systems, but in recent years, microinverters have emerged as a more attractive solution due to their unique advantages, especially as the cost per watt continues to decrease. The trend of replacing string inverters with microinverters is becoming more apparent.

The Advantages of Microinverters

Compared to string inverters, microinverters offer multiple clear advantages, making them an ideal solution for replacing traditional string inverters:

Ideal for Irregular and Complex Roofs: Microinverters perform exceptionally well on irregular and complex roof structures because they are not constrained by the roof layout. While string inverters require uniform module arrangement, microinverters allow the installation of modules at various angles and orientations. TSUN’s microinverter solutions offer multiple options to accommodate complex roof installations, significantly enhancing installation flexibility and maximizing system energy output.

High Safety: Microinverters operate at low voltages (typically below 60V), making them much safer to handle compared to the high-voltage DC used by string inverters, particularly during maintenance or system upgrades.

Multiple MPPTs, 15% More Power Output: Each solar module equipped with an independent Maximum Power Point Tracking (MPPT) ensures that the entire system operates at maximum efficiency, even when some modules are shaded or dirty. Studies show that microinverter systems can generate up to 15% more energy compared to string inverters.

No Need for Additional Accessaries: Microinverter systems do not require extra equipment such as AFCI (Arc Fault Circuit Interrupters), RSD (Rapid Shutdown Devices), or DC protection boxes, greatly reducing installation costs and system complexity.

Quick Installation and Easy Maintenance: Due to their modular design, microinverters are relatively easy to install, saving significant labor costs. In addition, microinverters allow individual module monitoring, enabling maintenance personnel to quickly detect and resolve issues, thus reducing maintenance time and costs.

Different solutions for different scenarios with microinverters

In response to the mainstream solar modules in different countries, TSUN offers microinverters with various power rates, which can be combined to create larger power stations. Let’s take a look at the different combinations.

System combinations when using 430W and lower solar panels:

System combinations when using 440~480W solar panels:

System combinations when using 490~540W solar panels:

System combinations when using 550W and higher solar panels:

The following technical data are available for the recommended products:

Connections: All of our products now come with two connection options.

• Trunk Cable: Microinverters with a single short AC cable (input and output) with a T-connector for bus cable connection.
• Daisy-chain: Microinverters with two long AC cables (input and output) up to 2.52 meters in length for series connection.

Advanced Monitoring with Tsun Smart: Each DC input is individually monitored in Tsun Smart, providing detailed insights into the system's performance.

Extended Warranty: TSUN microinverters come with a 15-year factory warranty, demonstrating the company's confidence in the durability and quality of its products.

Advanced Communication: TSUN microinverters offer the option of communication via Wi-Fi and RS485, a particularly valuable feature for commercial or industrial installations.

TSUN’s microinverter series is the most comprehensive, offering a wide range of power options to suit various applications. With more solutions to replace traditional string inverters, TSUN enhances both system safety and energy efficiency. Our slogan, “MORE SAFETY, MORE POWER”, reflects our commitment to delivering top-tier solutions for every project.