Iran's first nuclear power station has been connected to the country's electricity grid. Officials said the power station was supplying 60 megawatts of its 1,000 megawatt capacity to the national grid. The reactor's generating unit began operating at a low level in May prompting Israel and other nations to express fears the reactor could help Iran develop nuclear weapons. Tehran says its intentions are purely peaceful. But the International Atomic Energy Agency has said it is increasingly concerned that Iran is also secretly working on components for a nuclear weapons programme.