Abstract
Tidal energy has the opportunity to bring reliable electricity to remote regions in the world. A resource assessment, including the response of the tidal stream resource to fluctuations in the Indonesian Through Flow (ITF) is performed using the Regional Ocean Modelling System (ROMS) to simulate four different scenarios for flow through the Lombok Strait in Indonesia. Tidal currents simulated with a variable ITF are compared against a tide-only (TO) simulation to identify how the ITF spatially changes the resource across the Lombok Strait. We find that the uncertainty in the tidal currents from the TO simulation is 50% greater than the variable ITF simulation. To identify change to resource, surface velocities from Strong ITF and Weak ITF scenarios are considered. As a result of the fluctuations in the ITF, certain characteristics, such as the asymmetry and magnitude, of the tidal current vary greatly. However, the magnitude of change is variable, with regions to the west of the strait experiencing greater modulation than in the east, suggesting that resource uncertainty can be minimised with selective site positioning.
Highlights
IntroductionAs the tidal-stream industry progresses, tidal stream developers are looking to export their proven technology to the global market
A number of spatial and time series diagnostics have been derived from the hydrodynamic models, to inform and support the engineering analysis
Spatial maps of maximum flow speed, generated from the Regional Ocean Modelling System (ROMS) variable Indonesian Through Flow (ITF) model, show the persistence of strong flows and identify the Lombok Strait-where it narrows between the island of Penida and Lombok-as having the most potential for tidal stream energy extraction (Figure 8a)
Summary
As the tidal-stream industry progresses, tidal stream developers are looking to export their proven technology to the global market. In 2013, the amount of electricity produced was less than the total energy demand, which is set to increase exponentially-in what could be termed a doubling sequence, from 52 GW in 2013 to 115 GW by 2020 and 430 GW in 2050 [3]. To help tackle this deficit, the Indonesian government have committed to increase the contribution of renewable technologies to 17% of the energy mix by 2050 [4]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
