Located in the central and southern part of Into-China Peninsula, Thailand borders with Cambodia, Laos, Myanmar and Malaysia. It is divided into four natural zones in terms of terrain: The north is mountainous area with forest, the middle is a plain with open rice fields, the northeastern part is a plateau with semi-dry farmland, and the south is a peninsular with long coastlines. Most of the border areas are of low mountains and plateaus.
         

Thailand belongs to the tropical monsoon zone, with each year divided into three season, hot, rainy and dry. With an annual average temperature of 24～30℃, its temperature usually is above 18℃ and its annual average rainfall is about 1,000mm. It is dry from November to February due to the influence of the cool monsoons from the northeast, while the period from March to May usually sees higher temperatures, some of which are as high as 40-42℃. From October to December, it is in its rainy season due to monsoons from the southwest. Occasionally, tropical cyclones from South China Sea can blow to the east of Thailand via Indo-China Peninsula from October to December. 

The 20MW project is at Tak, whose geographical coordinates are: east longitude: 100°22′33’’; north latitude: 14°4′51’’. The annual average temperature is 27.1℃, with the average temperature in January reaching 25.4℃ and that in July recorded at 27.2℃. This area is four meters above seal level, and land is suitable for farming. The annual average sunshine time is about 1,900 hours and annual average wind speed is 2.64m. All these make this place ideal for setting up PV power stations.