Hungarian opposition parties on Friday demanded further information on the impact of the planned investment in the Paks nuclear power plant. The main opposition Socialist Party said it was turning to the economy minister with a question about how the plant’s expansion would impact the budget, as well as seeking the opinion of the state debt manager about the deal’s likely long-term effects. István Józsa, the party’s deputy parliamentary group leader, said he had written to Mihály Varga for information about how the related 3 trillion forint loan would affect the budget.