The Technical Working Group on Nuclear Power Infrastructure (TWG-NPI) is a group of experts constituted to provide advice to the IAEA in support of the development and implementation of national nuclear power programmes.

The members of TWG-NPI come from Member States with operating or expanding nuclear power programmes and those considering or starting such programmes. They are appointed by the IAEA Deputy Director General, Head of Department of Nuclear Energy, following consultation with the respective national authorities and relevant organizations in these Member States.

The TWG-NPI meets at regular annual meetings with each meeting lasting up to four workings days.