Iran started pouring concrete on Sunday at its second nuclear power plant, a key step in building the facility with Russian help in the southern port of Bushehr, Iran’s state television reported.

“Nuclear power provides reliable electricity... and each power plant saves us 11 million barrels of oil or $660 million per year,” said Ali Akbar Salehi, head of the Atomic Energy Organization of Iran, in a televised ceremony.

On Saturday, A spokesman for the Atomic Energy Organization of Iran (AEOI) said the nation has the capacity to enrich uranium up to 60%, far more than is required for most civilian uses but short of the 90% needed to make nuclear bomb fuel.

“The organization has the possibility to produce 5%, 20% and 60%, and has this capacity,” AEOI spokesman Behrouz Kamalvandi said during a news conference at the underground Fordow nuclear plant, the official IRIB news agency reported.

“At the moment, the need is for 5%,” he added.