The　chemical　energy　contained　in　organic　sewage　is　not　fully　utilized.　By　using　organic　sewage　as　a　renewable　energy　source,　a　novel　trigeneration　hybrid　system　consisting　of　a　supercritical　water　oxidation　process　and　an　organic　Rankine　cycle　system　for　power,　freshwater　and　heat　is　proposed.　The　system　is　evaluated　by　multiple　approaches　including　parametric　sensitivity　analysis,　exergy　and　economic　analyses.　It　is　found　that　the　proposed　hybrid　system　with　the　organic　sewage　mass　flow　of　5020　kg/h　(12%　mass　fraction)　has　a　power　capacity　of　286.5　kW　and　heat　capacity　of　1081　kW.　The　electricity　efficiency,　thermal　efficiency,　energy　efficiency　and　exergy　efficiency　could　reach　up　to　9.56%,　44.93%,　53.47%　and　22.45%,　respectively.　The　overall　exergy　flow　destruction　of　the　hybrid　system　is　1706.1　kW.　The　four　components　with　the　highest　exergy　destruction　are　reactor,　valve,　the　first　stage　of　preheater　and　the　evaporator　of　organic　Rankine　cycle　system.　The　calculated　net　annual　income　value　is　739.861　k$.　The　four　components　with　the　highest　equipment　cost　are　two　turbines,　cooling　water　pump　and　reactor,　with　the　equipment　costs　of　571.31　k$,　1554.65　k$,　670.50　k$　and　460.91　k$,　which　account　for　32.09%,　19.40%,　8.37%　and　5.75%,　respectively.　The　dynamic　payback　period　and　the　simple　payback　period　of　the　system　are　16.41　and　11.02　years.　These　results　reveal　that　the　proposed　hybrid　system　is　efficient,　self-sufficient　and　clean　for　both　power,　heat　and　freshwater　generation,　which　could　be　a　promising　candidate　as　advanced　energy　conversion　technology　in　practical　applications.　©　2021　Elsevier　Ltd