The Lao government and Hydrochina International Engineering Corporation Limited have signed an agreement to conduct a study on the potential of wind and solar energy in the country. While the government has conducted pre-feasibility studies for the Nong and Xonbuly districts of Savannakhet province, a nationwide study has not yet been carried out due to the lack of accompanying regulations or funding support. According to international data sources, solar irradiance in Lao PDR varies from 3.6 to 5.5 kWh per square metre.