通霄CC

Tongxiao Power Plant is located on the coast of Tongxiao Township, Miaoli County. Its combined-cycle gas turbine units (Tongxiao CC) form one of the plant's core generation assets, serving the central-northern grid. Facing the Taiwan Strait, the site has progressively replaced older units with more efficient combined-cycle technology.

Tongsiao was Taiwan's first combined-cycle power plant, built starting in 1978 and operating commercially from 1983; its original Units 1 to 3 were retired in 2017 after 35 years of service. Today the plant's core capacity comes from three newer units built between 2018 and 2020 with Mitsubishi M501J turbines rated at 892.6MW each, alongside the upgraded 321.2MW Unit 6.

通霄CC (Natural Gas) currently reports a net generation of 2,673.7 MW across 4 unit(s), against an installed capacity of 2,999 MW (89.2% utilization).

Most gas units are combined-cycle (CC) plants that can start up and ramp output quickly, making them well suited to balancing intermittent wind and solar output. Taiwan's gas supply relies almost entirely on imported LNG with limited on-site storage days, so grid stability depends heavily on receiving-terminal capacity and shipping schedules.

Since the 2016 energy transition policy began, natural gas has been positioned as the bridge fuel replacing retiring nuclear and coal capacity, and it is now Taiwan's single largest source of generation. Flagship plants include Datan, Tongxiao, and Xingda. The pace of new LNG receiving-terminal construction (such as the "Third Terminal") is the key bottleneck for further expanding gas-fired capacity.