This would indeed be ambitious, however when considering that it is possible (the primary sources potential is adequate), that it will solve problems related to fuel reserves, and also a fair part of challenges related to NIMBY, overcentralization, capital intensity, pollution, waste disposal, decommission... it may (overall) be our best approach.

I was writing about a less ambitious plan, which simply aims at storing the energy produced by solar/wind powerplants during peak production periods.