The slow growth of acceptance is a major barrier to small-scale renewable energy development. This study examines the determinants of acceptance of small-scale renewable energy in Malaysia. The research model for this study was developed based on the theory of planned behaviour, the technology acceptance model, the diffusion of innovation theory and the existing literature on technology adoption. This study tested five hypotheses based on a survey, of 200 Malaysian urban residents and which used structured questionnaires. Multiple regression analysis results reveal that perceived ease of use, perceived behavioural control, awareness, relative advantage and cost reduction have significant impact on small-scale renewable energy usage intention. This study not only contributes to and extends our understanding of small-scale renewable energy purchasing behaviour, it also identifies the rationales for purchasing small-scale renewable energy. From a managerial viewpoint, the findings not only provide support for investment decisions but also take into consideration the concerns and needs of businesses and Malaysian government agencies. (C) 2014 Elsevier Ltd. All rights reserved.