
YIYEN ELECTRIC TECHNOLOGY COMPANY LIMITED develops and manufactures energy storage systems, inverters and power quality solutions for residential and commercial applications.
YIYEN ELECTRIC TECHNOLOGY COMPANY LIMITED is a high-tech manufacturer focused on R&D and intelligent manufacturing in electronic and electrical technologies, delivering core power equipment and system solutions for the Internet of Things for Energy.
The company’s product portfolio covers inverters and inverter/chargers, all-in-one energy storage systems (ESS), power conversion systems (PCS), battery management systems (BMS), lithium battery packs, MPPT solar charger controllers, automatic voltage regulators (AVR), and power quality equipment such as active power filters and static var generators.
With dedicated R&D teams in Shenzhen and Nanjing and research cooperation with Tsinghua University and Hohai University, Yiyen continues to advance product reliability, intelligence, and environmental performance. Its solutions are applied across sectors including education, telecommunications, power systems, transportation, government, banking security, scientific research, medical institutions, military, and large industrial and mining enterprises.
The YIY brand is registered in more than 60 countries through the Madrid trademark system, and the company serves customer groups across more than 100 countries and regions worldwide.

The company provides core power equipment and system solutions for the Internet of Things for Energy, supporting greener, more reliable power usage across diverse applications.
The company operates two R&D teams located in Shenzhen and Nanjing, supporting continuous innovation across energy storage and power electronics products.
The business philosophy emphasizes seeking benefits with quality and development with technology, supported by a strict quality management system.
In October 2024, the company participated in the 136th China Import and Export Fair (Canton Fair) in Guangzhou, presenting its energy storage products, solutions, and key technology highlights.
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