Understanding the characteristics of household electricity consumption and its driving factors under the changing cultural circumstances of society can be useful in designing proper regulations related to energy saving in households. This paper analyses the results of a field survey of the Indonesian households in making decisions about electrical devices use, with aim to understand the consumers’ behavior in consuming electricity in order to give clear understanding of household electricity consumption characteristics to support the better design of energy conservation policy for society. The study focused on two cities with different cultural backgrounds; Yogyakarta and Bandung in Java Island. The viewpoints of decision-making were based on the behavioral economics and technological perception. The results show that monthly electricity expenditure and knowledge in electrical devices use (power consumption and energy efficiency of devices) could be a signal in decision-making in electrical devices in both cities regardless to the payment system, despite of low knowledge of people in electricity prices. However, the change of electricity prices does not indicate as signal in decision-making. Therefore, the effort to increase awareness on energy conservation should for improving the energy efficiency standard on electrical devices and rectifying the prepaid system of electricity payment in order to raise awareness of electricity use.