http://phys.org/news/2016-02-plasma-physicist-discusses-wendelstein-x.html

This is pretty d*mn big.  What this is, in essence, is a prototype FUSION reactor.  It’s really, really big.  It’s really really heavy.  It was a b*tch to build. But it WORKS.  And, here is possibly the most important thing of all.

This is it.  This, right here is the starting point of fusion reactors.  Not in 5 years, or even 10, but this successful build means the brakes are off.  It’s been proven, we know how to make it go.  Now we just have to optimize the living h*ll out of it.

And, as humans, we are *really* good at that.