Uncertain　financial　and　economic　conditions　are　obstacles　to　achieving　sustainable　consumer　confidence　due　to　their　influence　on　saving　habits.　Currently,　the　role　of　consumer　confidence　in　emerging　economies＇　financial　systems　and　environments　is　undetermined.　While　investments　to　improve　energy　structure　and　environment-related　technologies　are　increasing,　the　effect　of　consumer　confidence　remains　unreported　in　the　literature.　Therefore,　we　investigate　the　nexus　of　the　environment,　energy　structure,　consumer　confidence,　and　environment-related　technologies　in　this　work.　Results　are　estimated　using　the　methods　of　cross-sectional　dependency　(CD),　“cross-sectionally　augmented　Im–Pesaran–Shin　(CIPS),　covariate-augmented　Dickey-Fuller　(CADF)　unit　root,　co-integration,　cross-sectional　autoregressive　distributed　lag　(CS-ARDL),　augmented　mean　group　(AMG),　and　common　correlated　effect　mean　group　(CCEMG)”　estimations.　Data　from,　“Brazil,　Russian　Federation,　India,　China,　and　South　Africa　(BRICS)”　economies　between　1992　and　2020　are　employed　for　the　analysis.　The　findings　reveal　that　consumer　confidence　(CC)　supports　the　reduction　of　ecological　footprints.　Similarly,　energy　structure　(ES)　and　environment-related　technologies　(ERTs)　are　critical　for　reducing　environmental　deterioration　in　BRICS　economies.　Thus,　the　findings　have　clear　policy　implications　that　support　policy　consistency　to　build　consumer　confidence　and　capitalize　on　the　favorable　effects　of　renewable　energy　(RE)　and　ERTs.　©　The　Author(s),　under　exclusive　licence　to　Springer　Nature　B.V.　2025.