The pair was awarded the contracts by Thailand’s Office of the Energy Regulatory Commission (ERC) in a tender.
Four of the projects will be built in the north-east of the country, in Ubon Ratchatani and Amnat Charoen provinces. A fifth is located in Chaiyaphum province north of Bangkok.
Acciona believes the five wind farms will produce 1.141GW/h of electricity every year on completion.
Under the terms of the contract all the energy produced will be purchased by the Electricity Generating Authority of Thailand (EGAT), a state-owned utility managed by Thailand’s Ministry of Energy.
The Blue Circle, which penned the agreement to develop the projects with Acciona last year, is based in Singapore and holds a nearly 50% stake in the special purpose vehicle behind the projects.
Acciona aims to complete the five wind farms between 2026 and 2030.
Thailand currently has an operational wind fleet of 1.5GW according to Windpower Intelligence, the research and data division of Windpower Monthly.
The Thai government has committed to generating up to 30% of the country’s energy from renewable sources by 2037, and slashing carbon emissions 40% by 2030 from 2005 levels.