Contribution of transhemispheric swells to the wave energy potential in the Canary Islands

Numerous studies have explored the impact of extreme fetch swells from the Southern Hemisphere on the canary coasts, with most focusing on oceanographic and coastal engineering aspects. In this study, the arrival of these swells in the Canary Islands is examined. They are characterised by long periods and low height compared with its wavelength. Their smoother and more predictable nature makes them well suited for certain wave energy converters and hybrid offshore energy systems. To estimate the wave energy, the characteristic wave parameters from buoy records anchored in deep waters south of Tenerife were analysed. In addition, the data collected by this buoy were contrasted to that from the nearest virtual buoy (SIMAR hindcast point). The energy period ratio obtained from the spectral moments over the peak period is 0.87 in the study area. Although their small height reduces individual power output, their long wave periods make them particularly well suited for co-location alongside offshore wind farms. This hybrid approach could maximise energy yield from the same marine space, combining the strengths of both technologies for more efficient and consistent renewable power generation.