Variety of energy crops for biofuel production: Potential in Lao PDR Nammayod Sitthideth, Kanjanapon Borisoot, Tawan Paphapote and Tanakorn Wongwuttanasatian E3S Web Conf., 629 (2025) 05003 Published online: 05 June 2025 DOI: 10.1051/e3sconf/202562905003