Electricity distribution network is a prime example of a natural local monopoly. In many countries, electricity distribution is regulated by the government. In Finland, the regulator estimates the efficient cost frontier using the data envelopment analysis (DEA) and stochastic frontier analysis...

This paper aims to estimate the efficiency improvement target or the X factor for regulating the Thai electricity generation state owned enterprise. Efficiency is measured by employing a modern, standard application of parametric and nonparametric approaches, namely Stochastic Frontier Analysis...