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Abstract: Currently, around 90% of Malaysia's electricity generation depends on fossil fuels. This reliance, in a long run, is not a secure option. However, renewable energy sources can contribute to a sustainable electricity generation system; but diversifying fuel supply chain is a complex process. Therefore, the aim of this paper is two folds. Firstly, various renewable resources potential are reviewed, and secondly an assessment model is developed for prioritizing renewable options. Four major resources, hydropower, solar, wind, biomass (including biogas and municipal solid waste) are considered. Their electricity generation potential, along with any likely shortcoming is also discussed. Moreover, using a multi-perspective approach based on analytic hierarchy process (AHP), an assessment model is developed. AHP model employs four main criteria, technical, economical, social and environmental aspects, and twelve sub-criteria. From the review it was found that renewable resources seem to have a sufficient potential to develop a sustainable electricity system. Furthermore, AHP model prioritize those resources, revealing that solar is the most favorable resource followed by biomass. Hydropower and wind however, are ranked third and fourth, respectively. The model also shows that each resource is inclined towards a particular criterion; solar towards economical, biomass towards social, hydropower towards technical, and wind towards environmental aspect. Besides reporting AHP model for the first time in Malaysian context, the assessment performed in this study, can serve decision makers to formulate long-term energy policy aiming for sustainability. [Copyright &y& Elsevier]

Abstract: Rural electrification to help rural communities improve their quality of life needs to be designed in a sustainable manner with the intention of keeping village culture and environment from eroding. Micro-hydropower systems (MHS), especially run-of river schemes, are examples of renewable energy projects that, if managed well, can be socially and environmentally sustainable. This paper presents the results of a field survey conducted in Ba'Kelalan, in Sarawak, Malaysia, where several MHS have been implemented by various funding agencies using different planning mechanisms as well as different design and operational procedures. Quantitative and qualitative analyses were used in a case study comparison of two MHS in Ba'Kelalan based on criteria such as system loads, electricity tariff, the level of community involvement in the project, and the arrangements put in place for maintenance. Several barriers to sustainability were found in the operation and maintenance of the MHS due to a lack of knowledge by unskilled operators. The key lessons learnt from the case study are that sustainable development of MHS requires financial and load distribution management at the beginning of the project, as well as capacity building for both operation and maintenance personnel, as well as the community. [Copyright &y& Elsevier]