for some definition of the word 'best' - we have plenty of places that would be perfectly suitable other than all the pesky people it would displace. If we really cared about carbon-free energy that would be a solvable problem.
But the only reason we care about carbon-free energy is because of the pesky people. If displacing people isn't a big deal, then climate change isn't a problem and we don't need to care about carbon-free energy at all. We'd just move populations as the climate changes.