The amount of solar energy transmitted through the national grid is around 10 per cent higher than in the same time last year, and authorities are encouraging more investment in clean and renewable energy, according to the head of the state electric utility. Electricite du Cambodge (EdC) director-general Keo Rottanak told The Post on February 7 that the Ministry of Mines and Energy and EdC have been working to increase the power supply capacity and meet the growing demand inspired by economic growth.