▁the ▁ 1 9 7 3 ▁energy ▁crisis . ▁It ▁has ▁found ations ▁in ▁the ▁former ▁ag encies ▁Federal ▁Energy ▁Administration , ▁the ▁Energy ▁Research ▁and ▁Development ▁Administration , ▁the ▁Energy ▁Resource ▁Council , ▁and ▁the ▁At omic ▁Energy ▁Commission , ▁all ▁established ▁prior ▁to ▁the ▁establishment ▁of ▁Department ▁of ▁Energy ▁( DO E ) ▁in ▁ 1 9 7 7 ▁( ). ▁The ▁ 1 9 7 8 ▁National ▁Energy ▁Act ▁cons olid ated ▁several ▁of ▁the ▁former ▁ag encies ▁into ▁the ▁DO E , ▁and ▁created ▁an ▁office ▁that ▁focused ▁on ▁energy ▁efficiency ▁and ▁renew able ▁fu els . ▁The ▁ag ency ▁had ▁under g one ▁several ▁different ▁names ▁since ▁ 1 9 7 8 ▁to ▁reflect ▁its ▁changing ▁scope , ▁including ▁the ▁Office ▁of ▁Conserv ation ▁and ▁Sol ar ▁App lications ▁( C SA ), ▁the ▁Office ▁of ▁Conserv ation ▁and ▁Sol ar ▁Energy ▁( C SE ), ▁and ▁the ▁Office ▁of ▁Conserv ation ▁and ▁Ren ew able ▁Energy ▁( CRE ). ▁The ▁ag ency ▁gained ▁its ▁current ▁name , ▁the ▁Office ▁of ▁Energy ▁E ffic iency ▁and ▁Ren ew able ▁Energy , ▁in ▁ 1 9 9 3 . ▁ ▁Management ▁and ▁organization ▁The ▁E ERE ' s ▁mission ▁is ▁defined ▁as ▁" to ▁create ▁and ▁sust ain ▁American ▁leadership ▁in ▁the ▁transition ▁to ▁a ▁global ▁clean ▁energy ▁economy ." ▁ ▁The ▁office ▁also ▁develop s ▁initi atives ▁to ▁advance ▁specific ▁techn ologies . ▁ ▁The ▁Office ▁of ▁E ERE ▁is ▁led ▁by ▁the ▁Ass istant ▁Secretary ▁of ▁Energy