I believe oil industry (and other industries exploiting the fossil fuels) is still much holding down the progress for other options. The techonology for solar power is already there, but there is not yet enough competition for the markets to bring the costs down for the common consumers.
They say Finland is behind the other world in exploiting wind power, but they were jubilating over the fact that we have know-how to make wind power units for arctic use in particular.
Our rivers are pretty much in use already.
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