Hoa Hoi Solar Power Plant is the first solar power project in Phu Yen province in 2019 with the largest scale in the Central region. The factory was built on an area of more than 256 hectares in Hoa Hoi commune, Phu Hoa district, Phu Yen province, Vietnam. This project is a joint venture between Truong Thanh Vietnam Group Joint Stock Company and B.Grim Group of Thailand as the investor with a total capital of VND 4,985 billion.

The plant uses photovoltaic technology 752,640 PV panels to directly convert sunlight into electrical energy with a capacity of 257 MWp connected and transmit the power to the 220kV transmission system. After 7 months of construction, on June 10, 2019, Hoa Hoi Solar Power Plant project generated commercial electricity and on June 25, 2019, was officially inaugurated to put into operation.

In October 2021, due to the breakdown of medium voltage cabinet 473 in the 24kV range, the power generation output of Hoa Hoi Solar Power Plant was greatly affected. Therefore, ACEE has coordinated with the investor and construction units to come up with a remedial plan and has completed the replacement, installation, testing, calibration, PTP, successfully energizing a series of 24kV medium voltage cabinets, contributing to ensuring the power output for the Plant.