How many nuclear power stations are in Fukushima-Japan?

Question:

And how many are now in meltdown?

Answer:

There are two nuclear plants in Fukushima prefecture.
None of their reactors are melting down.

Fukushima Power Plant #1 has 6 reactors.
Fukushima Power Plant #2 has 4 reactors.
Four reactors of the Plant #1 are in trouble now.