Mood has nothing to do with investing in nuclear. We are talking something you build that prints money at a guaranteed rate, there's no one to sell to that you need to influence one way or another to make them throw more of their money at you.

The only reason why nuclear power isn't widespread is that shareholders see a 30 year return on investment and run away to juicier returns.

Investors at large aren't phased by things like the environment. There's too many who would invest either way if the profit potential was clear. So far, all nuclear plants have required large subsides, taken over a decade to build and open, and have cost far more than originally anticipated. Investors often look to past performance as a predictor of likely returns. There's no appetite for this kind of investment nowadays.

Probably but Fukushima probably helped too.