We need to start building now, with a target of having at least 80% of our electricity be nuke within 10 years, and at least a doubling of our electric capacity (to accommodate electric cars, and a switchover from oil heat to electric heat in the Northeast)
A lot of homes up here were built with electric heat but oil or gas heat was added later as electric became too expensive. This winter lots of folks turned on their electric heat for the first time in ages.
Better yet, we need to let the free market decide. When “we” decide what needs to be done in advance, in a rush to solve the problem with the solution that appears to be the best one this week, “we” rush into things using other people’s money and the armed agents of government to enforce what “we” have decided. Almost always we later regret our decision, such as converting food grains to ethanol, and find we have thus wasted precious time and money.