Next Generation Nuclear Plant.
A Next Generation Nuclear Plant (NGNP) is a generation IV version of the very-high-temperature reactor (VHTR) that could be coupled to a neighboring hydrogen production facility. It could also produce electricity and supply process heat. The United States Department of Energy issued in 2007 a "request for expressions of interest from prospective industry teams" that want to provide design services for developing the NGNP.
Idaho National Laboratory approved a design similar to Areva's prismatic block Antares reactor as the chosen Next Generation Nuclear Power Plant HTGR to be deployed as a prototype by 2021. It was in competition with General Atomics' Gas turbine modular helium reactor and Westinghouse' Pebble Bed Modular Reactor.