# Electric bus fleet transition and financing > Live situation record from CLSTR: https://clstr.news/situations/electric-bus-fleet-transition-and-financing > Updated: 2026-10-05T04:21:00.000Z. Sources: 6. Developments: 2. A study by the Universitat Politècnica de Catalunya suggests that fully electrifying the Transports Metropolitans de Barcelona (TMB) bus fleet could save 66.5 million euros over 15 years. While replacing 772 hybrid or combustion vehicles with electric models requires higher initial investment, the report notes that lower energy and maintenance costs make the transition sustainable. Additionally, the shift is estimated to provide over 80 million euros in social and environmental benefits through reduced emissions. However, broader challenges regarding the electric bus transition persist. High upfront costs and limited financing capacity remain significant hurdles. Current international climate finance has prioritized private vehicles, with less than 10% of funding directed toward essential decarbonization strategies like buses. New efforts are now focusing on improving the ‘bankability’ of e-bus projects to make them more attractive to investors through various business models and risk-sharing approaches. ## Timeline ### 2026-10-05: Electric bus transition requires private investment and improved bankability Efforts to transition to electric bus systems are hindered by high costs and a lack of dedicated financing, as climate funds have largely prioritized private electric vehicles over public transit. 2 sources. https://clstr.news/cluster/electric-bus-transition-requires-private-investment-and-improved-bankability ### 2026-09-30: TMB electric bus fleet transition could save 66.5 million euros A UPC study suggests that transitioning TMB's entire bus fleet to electric vehicles could save 66.5 million euros over 15 years while providing significant environmental benefits. 4 sources. https://clstr.news/cluster/tmb-electric-bus-fleet-transition-could-save-665-million-euros --- Cite as: Electric bus fleet transition and financing. CLSTR, https://clstr.news/situations/electric-bus-fleet-transition-and-financing