Since each individual form of renewable energy has variable output in each region, it makes sense to have a diversified portfolio of energy types. Both because of that and because of the amount of energy inherent to ocean waves and coastal breezes, offshore wind turbines and wave generators could eventually be important parts of the energy mix.
People living in coastal areas have an unfortunate aversion to offshore wind turbines, asserting that they spoil the view. One possible technological response is floating turbines, located farther offshore where the wind is stronger. Such devices could also be moved into whatever location is optimal across a particular span of time.
Wave power is another promising technology, though the first commercial operation won’t be operating until October 2007, when it comes online in Portugal. Waves are challenging to turn into electricity largely because of the character of their motion: low speed, high force, and in many directions. Nonetheless, some novel designs may help to make it one more valuable addition to the arsenal of renewable energy sources.