My cursory Google says that it’s not impossible. So why?
EDIT: Answer seems to be that (politics aside) practically it’s cost prohibitive and the tech can’t transfer the energy over the distance required.
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We could build them, affordably. Solar thermal with molten salt would probably be the most useful for of peak evening power, if we are talking large scale. This solves the ‘sun doesn’t shine at night’ issue, which will actually become an issue due to more widespread small solar roof paneling, (this means we have enough energy in a mid summer evening but then not enough when the sun goes down).
We haven’t because governments have made it clear that this is not welcome, and they love the coal industry, for reasons not at all connected with big donations.
We may possibly see them being built now, BUT this takes time. Plans and lobbying are currently underway, and until the new government decides which rich mates get what in the way of handouts, it will remain unclear.
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