An energy performance management concept for developing a low-carbon community has been modelled to examine the household energy demands in a tea-making and tourism community of Taipei Water Protected Area. The results of energy demands indicate that households in family-run tea-making and tourism-related economic activities create double the volume of carbon emissions compared with family households. Finally, a scenario was used to show that the projected transformation of low-carbon lifestyle patterns might decrease energy demands and increase existing profits for the residents.