Doesn't have to be too cheap to meter. Just has to be cheap enough.

Take France as an example of a Western nation with a mature nuclear technology (having made a smart decision in the early 70s instead of a stupid one)

They are a net exporter of electricity. Cost of production is currently running at about EUR 3 cents/KwH, among the lowest costs in Europe. The spot price in Europe is at about EUR 5 cents/KwH.

They are not spewing pollutants into the air. They are not held hostage to a resource largely located in nations run by head cases. Nor are they pumping billions of dollars into the bank accounts of said head cases, for them to use as they see fit.