solar power for example is most advanced in china india and japan according to the international renewable energy agency. other countries are focusing on wind energy here to china is in 1st place but it's proven very difficult to harness the energy of waves. immensely powerful forces. huge wind generated waves. of the tides controlled by the moon's gravity. with an area of 360000000 square kilometers about 70 percent of the earth's surface is covered by water. most diverse in the oceans which could be a massive source of climate friendly energy but how can we harness that power tidal amplitudes very dramatically around the globe in parts of western europe they're particularly pronounced. the 1st tide mills were built in the middle ages or even earlier they were driven by the daily changes in water levels. in the 1960 s. this idea was picked up again and engineers built the 1st big title power station in britain and france. turbines inside hardly garage are driven by the ebb and flow of the ocean. but the engineers encountered a problem. i'm only few things are suitable for this type of power plant and t