Health Care Without Harm Europe held its second European Healthcare Climate Summit in 2020 comprising of two events: a consultation event held virtually to collate the healthcare sector’s feedback on Operation Zero and a presentation at the World Health Organisation's 8th annual meeting of the Working Group on Health in Climate Change. In the event report, we summarise our vision of a global roadmap for the decarbonisation of healthcare, the Operation Zero project, and the feedback we received during the consultation session.