China sea wave generator set was put into trial operation in Zhuhai, Guangdong. The maximum power generation per day is 24,000 kWh.

Damn, 6kTons and 24MW, that's some chunky machine!!

Frankly, this kind of beefy thing is needed. Wind is great and all, but it's always fully or partially converted - any grid needs a big ol' rotating mass to keep frequency and voltage stability against varying loads.