The oceans are a massive resource to address our challenges. Covering seventy percent of our globe, the oceans are by far the largest solar collectors on Earth. Almost all of the sunlight that falls on the oceans is captured as heat in the surface layers.
The deep ocean forms a huge reservoir of cold, nutrient rich water, continuously replenished by the global thermohaline circulation, bringing cold water from the arctic regions in massive amounts. The oceans can thus provide an enormous amount of clean and renewable energy. The cold water can be used for cooling systems and to drive a process to generate electricity.
Because of the stable temperatures of the water, this so-called baseload source requires no backup to cope with fluctuations, as is the case with for instance solar and wind power.