In our continuing series of videos, whose purpose is to introduce newcomers to the subject of renewable energy, I offer this short piece on hydrokinetics, featuring a discussion of the strengths and weaknesses of the idea of extracting energy from moving water.
Though this sounds simple – and mankind has been harnessing that simplicity for thousands of years, it gets tricky now that there are seven billion energy-starved people on this small planet, and we’re desperately looking for sustainable ways of providing that energy.
Indeed, it’s not as easy as it seems. Anytime we insert a device into moving water, we face immediately a variety of issues, both ecological and logistical. I.e., we’re both changing the natural habitat in some ways that are hard to understand completely, and we’re also setting ourselves up to face huge costs associated with maintenance, as devices rust, and encounter things like biofouling, shifting current patterns, dynamic sea- and riverbeds, etc.
Hope you enjoy.