Irish local government has been criticised in the past for ad hoc implementation of climate action measures and for struggling to successfully balance the longterm challenges of climate change with everyday politics and administration. This research examines the implementation of the 2019 – 2024 Climate Change Action Plans (CCAPs) in three Dublin local authorities to understand what factors characterise their implementation. The contribution of local government officials to policymaking has been neglected in previous studies of climate policy in Ireland. This thesis uses a bottom-up framework developed by Lipsky to examine the role played by local government officials in shaping the CCAPs during implementation. Using interview data and inductive thematic analysis, the research demonstrates how the implementation of the CCAPs is shaped by a “whole-of-council” approach to climate action, resource allocation and organisational capacity, and engagement with the public. Interest in the role of local government in responding to climate change has remained high over recent years. As municipalities across the world adopt similar climate change action plans, analysis of how the Dublin CCAPs are implemented in practice is timely. The findings inform empirical understandings of climate policy implementation at the local level and the ensuing recommendations for policymakers offer practical learnings.