In the tropics, the deep sea is cold and the sea surface is very warm. That temperature difference can be harnessed and turned into electricity. If we can improve the technology, this method of producing power could be a godsend for island nations reliant on expensive and polluting diesel for their power.
For more than a century, researchers have explored the idea of ocean thermal energy conversion. There’s nothing fundamentally new to the idea of extracting power from temperature differences. In fact, the underlying technology is similar to the way coal, gas and geothermal power plants create electricity, by using vapour to spin a turbine.
