Even France shut down the Superphénix. It was just built too! A waste of ten billion dollars because the government gave in to these extremist environmental groups. One of them even fired an RPG at it while it was being built.

Strange how there are so many progressive radical groups and somehow the anti-nuclear activists are the only ones that manage to change the energy agenda in favour of the very powerful lobby of the fossil fuels. The animal activists never changed the subsidies to animal agriculture, the activists for international causes like Palestine haven't managed much either.

... it was shut down in 1998, relevant section from German Wikipedia as the English version is lacking details:

In June 1997, Prime Minister Lionel Jospin announced the closure of the power plant as one of his first official acts. He justified this step by pointing to the enormous costs the plant incurred. In the preceding ten years, it had produced no electricity for most of the time due to malfunctions. It even consumed considerable amounts of electricity to keep the sodium in the cooling system above its melting temperature. Each pipe carrying sodium and every tank was equipped with heaters and thermal insulation for this purpose.

... so it used a lot of energy while being shut down because of malfunctions for most of those 10 years. Seems like shutting it down was the best course of action.