Tidal in-stream energy potential metric: Calibration and estimation in selected sites in the Philippines

Tidal in-stream energy (TISE) resource assessment can be costly and presuppose that areas have already been identified as having potential before simulations and field surveys are done. Macro-level assessment of TISE potential using an energy potential (EP) metric previously proposed based on tide height differences at the channel boundaries. This EP metric is further studied and tweaked in this work. A combination of simulated currents, using DELFT3D, predicted currents from the National Mapping and Resource Information Authority (NAMRIA) of the Philippines, are used to calibrate the EP metric to and R-squared value of 0.70437 with an average estimation error of 13.577% for monthly energy densities. The EP metric is applied to pre-identified sites of the Department of Energy for tidal energy and estimates of the monthly tidal in-stream energy are presented.