I thought a thread on Alternative/Renewable Energy would fit well in the nest of topics like Climate Change, Carbon Tax, Nuclear Energy etc. There is so much noise out there about Solar, Wind, Geothermal, Hydro, Tidal/Ocean, Biomass, Biofuel etc. Can it provide Baseload, is it economically viable, is it technologically feasible, how far is it away from useful application, what percentage of total power requirements can it supply, who's leading various areas, what are the drawbacks or issues with each type of technology, which are relevant for us in Australia etc etc At the risk of looking like a Wikipedia Junkie, this link provides good unbiased basic information http://en.wikipedia.org/wiki/Renewable_energy My gut feel is that Solar Thermal and PV, Geothermal, Wind and Tide/Ocean are naturals for us. Solar is undergoing rapid technologocal development it seems, with Spain as the epicenter, which I found interesting. Solar Thermal Plants and Solar PV generation is popping up everywhere. We have The Outback. Seems like we should be making better use of it.