WASHINGTON, D.C.—Russia has converted 500 metric tons of highly enriched uranium—the equivalent of 20,000 nuclear warheads—and the resulting low enriched uranium, or LEU, has been delivered to the United States, fabricated into nuclear fuel, and used in nuclear power plants to generate nearly 10 percent of all U.S. electricity for the past 15 years, federal officials said.

That’s roughly half of all commercial nuclear energy produced domestically during that period, a U.S. Department of Energy press release said.

Energy Secretary Ernest Moniz announced the final LEU shipment on Thursday.

The LEU was derived from Russian weapons-origin highly enriched uranium, or HEU, under the 1993 U.S.-Russia HEU Purchase Agreement, commonly known as the Megatons to Megawatts Program, the press release said. [Read more…]