Sweden's state-owned energy giant Vattenfall is planning to take the German government to the Washington-based International Centre for Settlement of Investment Disputes over the closure of its nuclear power plants...Vattenfall did not comment on the report, though it said it was expecting “compensation for the phase out from nuclear energy.”...[R]eactors were shut down permanently earlier this year after Angela Merkel’s government performed a dramatic U-turn in its energy policy in the wake of the Fukushima nuclear disaster in Japan.