Abstract
The Philippines has an untapped potential of ocean renewable energy, and one of the appropriate tidal energy converters for the country is in-stream tidal energy. The archipelagic nature of the country along with its position between the Pacific Ocean and West Philippine Sea results in high tidal currents due to the narrow transitions between the two large bodies of water. This study aims to assess the potential in-stream energy in the Visayas-Mindanao region using numerical simulation. Using the Advanced Circulation Model (ADCIRC) in the modelling of tides, four (4) locations in the study area with the highest simulated depth-averaged current velocities are identified, namely, Liloan Port, Hilutungan Channel, Surigao Strait and Banug Strait. Among the selected stations, Banug Strait between the Islands of Bayagnan and Awasan produces the highest energy density of 253.2 kW-h/m2. Using an 18-m diameter turbine, it is estimated to have a monthly energy output of 64.4 MW-h, which is estimated to support 260 households on average. The annual energy output of the said 18-m diameter turbine is 773.3 MW-h.
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