What renewable energy sources does the ocean contain?

The ocean contains an abundance of renewable energy, including tidal energy, wave energy, seawater temperature difference energy, ocean current energy, salinity difference energy, etc. Scientists estimate that the theoretical reserves of these energy sources are about 150 billion kilowatts and that more than 7 billion kilowatts can be developed and used, which is equivalent to more than ten times the current global energy production capacity. 'electricity. in the future energy supply of humanity.