Tidal energy is an alternative form of power under development--the tides as powered by the moon are predictable. If we can harness the power of the tides, we could have cheap green energy. More Research & Development is needed!
Researchers state that by 2030, all new energy generation could come from wind, water and solar, and by 2050, all pre-existing energy production could be converted as well. "It is a question of whether we have the societal and political will."
This is very exciting! BioEnergy Domes use aquatic PLANTS to create energy, completely independent of the energy grid. Co2 is captured and fed back to the plants, as is waste water, creating a "truly sustainable energy" system.