With　the　ever-increasing　demand　for　high　quality　video,　mobile　video　transmission　optimization　over　a　limited　wireless　network　capacity　has　attracted　extensive　attention.　Scalable　Video　Coding　(SVC)　is　a　main　solution　to　provide　better　Quality　of　Experience　(QoE)　by　encoding　each　video　into　one　mandatory　base　layer　and　several　optional　enhancement　layers.　Deployment　of　caching　in　wireless　networks　has　been　considered　as　another　effective　method　to　mitigate　redundant　data　transmission　over　backhaul　links　and　to　reduce　the　end-to-end　video　transmission　delay.　Although　some　works　have　been　done　for　layered　video　content　over　cellular　networks　with　caching,　most　of　them　focus　on　video　quality　selection　or　video　caching　to　optimize　the　users＇　QoE.　The　problem　of　energy-efficient　content　placement　is　largely　ignored.　To　fill　this　gap,　we　focus　on　the　problem　of　energy-efficient　content　placement　for　layered　video　content　delivery　over　cellular　networks　in　this　paper.　Our　design　objective　is　to　maximize　the　energy　cost　savings.　We　formulate　the　energyefficient　content　placement　problem　as　a　convex　optimization　problem.　Then,　by　solving　the　optimization　problem,　we　can　obtain　the　optimal　set　of　content　placement　parameters　for　the　Mobile　Network　Operator　(MNO)　to　design　an　optimal　caching　policy　for　layered　video　contents.　Finally,　simulation　results　are　presented　to　show　the　performance　of　the　proposed　content　placement　scheme.