An　operating　model　for　nuclear-hydrogen　integration　(NHI)　is　developed　based　on　an　in-depth　analysis　of　the　future　trajectories　of　the　electricity　and　hydrogen　markets.　A　planning　model　is　proposed　to　determine　the　optimal　capacity　allocation　ratio　between　nuclear　power　and　hydrogen　storage　systems,　while　also　optimizing　the　on-grid　output　of　NHI　within　a　reasonable　range　of　system　load　factors.　The　results　indicate　that　the　optimal　capacity　ratio　of　nuclear　power　to　electrolyzers　and　fuel　cells　is　approximately　1:　0.41:　0.36.　Flexibility　analysis　shows　that　NHI　adjusts　output　from　51.3　%　to　128　%　of　the　rated　power　for　nuclear　power,　enabling　it　to　adapt　effectively　to　load　variations.　Economically,　NHI　achieves　a　total　revenue　of　18.37　billion　CNY,　which　is　approximately　56.0　%　lower　than　that　of　nuclear-pumped　storage　integration　(NPSI).　These　findings　suggest　in　regions　with　favorable　geographical　conditions　for　constructing　pumped　storage　power　plants,　NPSI　may　represent　a　more　economically　viable　operating　strategy.　©　2025　Hydrogen　Energy　Publications　LLC