This document discusses Ireland's green economy from an environmental economics perspective. It examines Ireland's priorities around issues like water quality and pollution reduction. It also analyzes Ireland's role in climate change mitigation through decarbonizing sectors like agriculture and shifting to services. The author argues that environmental policy should aim to meet objectives at minimum cost and that uncompetitive policies may do more harm than good by killing jobs. Credible, coordinated global solutions are needed to address climate change.