Ocean thermal energy conversion (OTEC) is the oldest renewable energy technology you’ve never heard of. The idea for the technology, which exploits the differing temperatures in different layers ...

In theory, OTEC has the potential to produce at least 2,000GW globally, rivalling the combined capacity of all the world’s coal power plants. And unlike many renewables, it is a baseload source ...

As covered in a recent video by [Ryan Inis], a more recent alternative to using water is supercritical carbon dioxide (CO 2), which could boost the thermal efficiency even further.