Serving　as　a　promising　solution　to　manage　municipal　solid　waste　(MSW),　the　waste-to-energy　(WTE)　system　has　recently　received　increasing　attention.　The　first　and　critical　step　of　constructing　a　WTE　system　is　selecting　a　sustainable　plant　site.　To　support　the　site　selection　of　the　WTE　system,　this　paper　proposes　a　novel　interval　type-2　fuzzy　decision-making　framework.　First,　a　sustainable　evaluation　index　system　is　established　by　considering　multiple　criteria　from　several　dimensions.　Second,　to　deal　with　the　heterogeneous　information　formats　under　different　criteria,　two　information　transformation　mechanisms　are　developed.　Through　the　proposed　information　transformation　mechanisms,　the　heterogeneous　information　formats　are　unified　into　interval　type-2　fuzzy　sets.　Then,　a　new　interval　type-2　fuzzy　distance　model　is　proposed　to　enhance　Besson＇s　mean　ranks　in　ORESTE　method.　Based　on　the　proposed　distance　model,　an　interval　type-2　fuzzy　ORESTE　method　is　developed　to　analyze　the　conflicts　between　the　alternative　sites　and　select　the　most　desirable　one.　Finally,　an　example　about　the　site　selection　of　the　WTE　system　is　provided　to　illustrate　the　implementation　process　of　our　proposal,　meanwhile,　the　comparative　analysis　and　discussions　are　conducted　to　verify　its　superiority　and　flexibility.(c)　2023　Elsevier　B.V.　All　rights　reserved.