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It's funny, because everyone was trying to get out of nuclear energy for a while. We all thought it would be replaced with wind power and solar energy. Anyway, as a result of governments suddenly realising for at least the next century we won't be able to get enough energy from natural sources, nuclear will probably have a bit of a revival. So I wouldn't move all your money out of that industry just yet. The one you hear about least is wave power but there are one or two companies that are investing heavily in the technology. I suppose with all the sea it's worth looking into, but overall I wouldn't expect it to do well for the small, short-term investor. Anyone with money here already won't have seen much return at all and I don't predict they're going to see much change in the near future, either, as it's going to be slow to develop.