The third edition of the European Zero Emission Bus Conference took place in Paris, France, last week on 17th & 18th November 2021. Over 300 stakeholders from all across Europe attended the event. Representatives from local authorities, public transport operators, industry, and international regulatory and financing agencies discussed the routes to accelerating the rollout commercialisation and technological readiness of zero emission buses. The conclusion: zero emission bus deployment must be accelerated. Dedicated programmes are needed to make zero emission technologies affordable and accessible to all European countries.