Djoni Hartono is a Professor at the Department of Economics, Faculty of Economics and Business, Universitas Indonesia. He received his B.S. degree in mathematics from Bogor Agricultural University, while his Master and Ph.D. degrees in economics were obtained from Universitas Indonesia. He teaches several subjects such as mathematical economics, econometrics, energy economics, regional economics, and economic modelling. His research interests cover the economy-wide impact of energy policies as well as regional and economic development. His another specialty is on the computable general equilibrium modelling. Currently, He is the Vice President of Indonesian Regional Science Association and also as of Head of Research Cluster on Energy Modelling and Regional Economic Analysis.