Ever sit by the ocean, and watch a buoy or a seagull bob up and down without end? The energy it
takes to move all that water up and down is massive. Prevailing winds,
temperature differentials, strong weather and even the rotation of the
Earth all contribute to the never-ending crash of waves against the
shore, and viewed from a certain perspective, that’s a lot of energy
going to waste:
The World Energy
Council has estimated that approximately 2 terawatts (2 million
megawatts), about double current world electricity production, could be
produced from the oceans via wave power. It is estimated that 1 million
gigawatt hours of wave energy hits Australian
shores annually and that 25% of the UKÂ’s current power usage could be
supplied by harvesting its wave resource.
The image above shows average yearly wave-power energy in various parts of the world in kilowatts per METER!
The
same ocean currents that fueled the economic growth of the 18th and
19th centuries may now help power the countries that prospered as a
result – with the best sites in the world lying off the shores of
developed countries, look for this alternative energy to (I can’t help
myself) make some waves in the coming years. Scotland, Portugal,
Australia and Hawaii already have installations underway or in place,
and feasibility studies are being undertaken by Spain, Norway, USA and
New Zealand.
via Ceto.com