2012:  NS - OG Energy Solutions (Thailand) Ltd. (NSET) was established by Nippon Steel Engineering.

2014:  Osaka Gas took a stake in NSET.

2015:  Energy supply for Honda Automobile (Thailand) Co., Ltd. was started.

2016:  Energy supply for Toray Textiles (Thailand) Public Company Limited was started.

2017:  Energy supply for Yokohama Tire Manufacturing (Thailand) Co., Ltd. was started.

2018:  Energy supply for Thai Honda Manufacturing Co., Ltd. was started.

2020: Utility supply for Spiber (Thailand) Ltd. was started.