Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Nearshore Wave Energy Resource Assessment for Off-grid Islands: A Case Study in Cuyo Island, Palawan, Philippines

Version 1 : Received: 12 October 2022 / Approved: 19 October 2022 / Online: 19 October 2022 (14:30:04 CEST)

A peer-reviewed article of this Preprint also exists.

Pacaldo, J.C.; Bilgera, P.H.T.; Abundo, M.L.S. Nearshore Wave Energy Resource Assessment for Off-Grid Islands: A Case Study in Cuyo Island, Palawan, Philippines. Energies 2022, 15, 8637. Pacaldo, J.C.; Bilgera, P.H.T.; Abundo, M.L.S. Nearshore Wave Energy Resource Assessment for Off-Grid Islands: A Case Study in Cuyo Island, Palawan, Philippines. Energies 2022, 15, 8637.

Abstract

Electrifying off-grid and isolated islands in the Philippines remains one of the challenges that hinders community development. One of the solutions seen to ensure energy security, expand energy access and promote a low carbon future in this isolated islands is the use of renewable energy sources. This study wishes to determine the nearshore wave energy resource during monsoon seasons in Cuyo Island using a 40-year wave hindcast and 9-year on-site wind speed data to develop high resolution wave energy model using SWAN wave model, and assessed its annual energy production through matching with wave energy devices. Results shows that average significant wave height (Hs), peak period (Tp) and wave power density (Pd) during northeast monsoon are Hs = 1.35 m, Tp = 4.79 s and Pd = 4.05 kW/m respectively, while southwest monsoon which is sheltered by the mainland resulted to a lesser outcome, Hs = 0.52 m, Tp = 3.37 s and Pd = 0.34 kW/m. While the simulated model was observed to overestimate the wave energy resource (Bias = 0.398, RMSE = 0.54 and SI = 1.34), it has a strong relationship with the observed values (average r = 0.9). Its annual energy production is highest at Station 5, with AEPWaveBouy = 43.761 MWh, AEP-Pelamis = 216.786 MWh and AEPWave Dragon = 2462.66 MWh. At present, the minimum requirement for a wave energy development to be feasible is 5 kW/m, which in this case, Cuyo Island falls short, but with the continuous evolution of wave energy converters, applications on milder re-sources will soon materialized.

Keywords

SWAN wave model; Nearshore wave energy resource assessment; Ocean renewable energy; Wave energy model simulation; Off-grid island electrification; Cuyo Island; Palawan

Subject

Engineering, Marine Engineering

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