No, it isn't. Building up the needed capacity will take decades and cost an enormous amount of money that is better spend elsewhere. Fuel supply is limited, wit

No, it isn't. Building up the needed capacity will take decades and cost an enormous amount of money that is better spend elsewhere. Fuel supply is limited, with cost for exploration quadrupled over the last 15 years, and a doubling cost for uranium fuel over the same period. Commercially viable known uranium reserves are used up by roughly 1/3 since 1950, depleting ever faster with more reactors. Even if we had the reactors already, even if we wouldn't need to spend trillions, the fuel simply isn't there for cost effective usage until the end of the century. Alternative reactors, thorium or fusion are experimental at best. So no, nuclear won't change anything soon.