Cities around the world are introducing electric buses, driven by growing concerns over urban air quality, carbon emissions and potential operational cost savings. The timing is now right for cities to start shifting to electrified transport but there are still several barriers to widespread adoption. This report, authored by Bloomberg New Energy Finance on behalf of the C40 Cities Climate Leadership Group, provides an overview of the e-bus sector, including a description of business models, an overview of existing e-bus manufacturers and a detailed analysis of the costs associated with running e-buses. The report also discusses how different types of cities can best deploy electric buses.