Asia Power Week 2017

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Salinity Gradient Power Generation - An Overview of Prospects (Room Silk 3)

20 Sep 17
9:00 AM - 10:30 AM

Tracks: Track G - Renewable Energy Technology

Renewable power generation through the use of salinity gradients between salt and fresh water was first investigated during the 1970s. However, research and development of the technology has been relatively slow until recently. This paper will first provide a basic outline of the technology options that are being researched including the reverse electrodialysis (RED) method, pressure retarded osmosis (PRO) and hydrocratic generator technology. The design principles, engineering and locational requirements will also be discussed. The current status of salinity gradient power generation projects will be summarized together with an analysis of the technical and commercial factors that are currently limiting the further uptake of the technology and how these may be overcome. As the main barrier to the increased uptake of the membrane technology options is the cost of ion-specific membranes, the current progress and breakthroughs in terms of cost reducing measures for membranes will be described. Finally, the paper will propose the potential place of the technology within the overall mix of renewable energy technologies in the future with a particular focus on SE Asia and its potential impact in the region.