Gamesa will deliver 20 machines to Gunkul Engineering for the Mittraphap project in Nakhon Ratchasima, southern Thailand.
The project is being built by PowerChina Zhongnan Engineering and is due online in early 2018. Gamesa will service the turbines for ten years.
It is the first time the uprated G126 has been contracted for a project. Gamesa has received a number of orders for the G114-2.625MW turbine, most recently from Iberdrola in Mexico.
The developer said the order was its third in Thailand, and Gunkul is now a repeat customer. In September 2016, Gamesa won a deal from the developer to provide 33 G114 turbines, with 2MW and 2.1MW ouputs, for a project in central Thailand.
Those turbines will be installed with a tip height of 210 metres, making them the tallest in Asia, Gamesa claimed.
Gamesa's debut order in Thailand was awarded by PowerChina in July 2015.