4. Challenges and comparison
Electricity demand is projected to increase steadily worldwide,
particularly for Asian countries [16]. Therefore, Asian countries
are expected to put more efforts into generating electricity from
renewable sources. Malaysia has committed to promote the
renewable energy but ocean energies have been ignored or are
not being emphasised in the current policy. Therefore, seven key
challenges facing the feasibility studies have been investigated for
ocean renewable energies in Malaysia [60]. These factors are as
follows: