President Trump will arrive in the United Kingdom this week for a state visit that promises to include the usual pomp and ceremony alongside the signing of a landmark new agreement on U.S.-U.K. nuclear collaboration.

Ammonia is a carbon-free energy carrier that could be produced using thermal energy from nuclear power plants. Terrestrial Energy announced June 9 that it has signed an agreement with engineering firm KBR to explore the use of its Integral Molten Salt Reactor (IMSR) for both hydrogen and ammonia production.