GoodWe Unveils 50kW C&I String Inverter: Quiet, Compact, Powerful, with a Proven Track Record in China

GoodWe has officially launched its new 50kW commercial and industrial (C&I) string inverter, the latest addition to its SDT series. Specifically designed for small to medium-sized C&I applications, the inverter meets growing market demand for quiet, high-performance, and easy-to-install solar solutions. Already proven in the Chinese market with over 100,000 units shipped since its debut in late 2024, the series is trusted in noise-sensitive environments such as schools, hospitals, and offices.

GoodWe’s C&I SDT series was awarded TÜV Rheinland’s dedicated low-noise certification, the first in the industry for C&I PV inverters. The 50kW model can operate at noise levels below 50dB even at full load, 15 to 20dB lower than comparable products.

“This product was developed based on insights gathered from hundreds of C&I site visits, giving us a clearer and more accurate understanding of real-world application needs,” said Alex Pan, Vice President at GoodWe. “Many small to medium-sized C&I scenarios are near areas of human activity where quiet operation is essential. With the launch of this upgraded string inverter, we continue to lead the industry with innovations that redefine how solar power is generated and used.”

Optimized Performance for C&I Rooftops

With a maximum input current of 20A per string, the SDT G3 50kW inverter is fully compatible with mainstream high-power PV modules. It features four independent MPPTs, ideal for maximizing energy harvest in complex commercial and industrial (C&I) rooftop installations. The inverter also supports up to 180% PV oversizing to ensure optimal performance by maximizing energy harvest during low irradiance periods. Its wide input voltage range of 140 V to 1,000 V offers outstanding system design flexibility to improve overall system efficiency. 

For larger energy needs, up to 10 SDT G3 inverters can be connected in parallel by using GoodWe’s Ezlink3000 communication solution.

Advanced Protection for Safer Operation

In scenarios where the inverter is installed close to people, safety is paramount. The SDT G3 is equipped with integrated string-level monitoring, Type II surge protection on both AC and DC sides, and optional AI-powered AFCI 3.0 technology to detect and mitigate arc faults. It also features remote shutdown capability. With an IP66 protection rating, it ensures long-term durability in demanding outdoor environments.

Compact, Lightweight, and Easy to Install

Weighing only 33kg, the SDT G3 50kW is among the most compact and lightweight inverters in its class. Its slim design enables easy installation, significantly reducing labor requirements and costs across the system’s lifecycle.

Cost-efficiency is further enhanced by support for aluminum cables to lower system LCOE, and by string-level monitoring that allows for faster and more precise troubleshooting during O&M.

With a solid foundation in the domestic market and technical specifications tailored for global demands, the GoodWe SDT G3 50kW inverter is now available to international partners and customers. To further enrich its C&I portfolio, GoodWe will also launch a 60kW string inverter series, including low-voltage models designed to meet the specific grid requirements of markets.