Bali Island and Lombok Island are amongst the most famous tourist locations in Indonesia. The straits in this area have high velocity tidal streams and are already being considered by major turbine manufacturers as potential sites for tidal stream turbines. Three islands (Nusa Penida, Nusa Lembongan and Nusa Ceningan) separate the Lombok straits into three straits: Badung, Toyopakeh Strait and Lombok Strait. All of these sites have the potential for tidal energy extraction. As for other location, resource assessment at individual sites also requires consideration of interaction with other locations. This paper aims to establish and validate a robust numerical model for tides in this region using DG ADCIRC. Methods of incorporating the Indonesian Throughflow in the model and the selection of input data are described. We also present a preliminary estimate of tidal resources in the three straits using linear momentum actuator disc theory incorporated in the DGADCIRC model.
