The Swiss parliament has lifted a ban on the construction of new nuclear power plants, with the decision now set to be debated in the National Council. The move is part of a broader discussion on energy policy in Switzerland, which includes proposals to increase the use of renewable energy sources and improve energy efficiency. The construction of new nuclear power plants is seen as a way to ensure a reliable and constant supply of electricity. The decision is expected to be put to a referendum, with some groups already announcing their intention to challenge it.