A large nuclear facility is well positioned to dispatch large quantities of both electrical and thermal power. This study considers the supply of thermal energy to a large desalination facility to examine heat balance impact on the nuclear steam cycle and to evaluate the economic issues associated with various coupling configurations. The Korean designed reactor plant (APR1400) is selected as prototypical from both a capacity and turbine cycle heat balance perspective to examine steam supply and the impact on electrical output, and is modeled here as the energy production facility.