A greenhouse gas emission projection is an estimate of what emission levels are likely to be in the future based on key assumptions such as economic growth forecasts, and Government climate change mitigation policies and measures. Greenhouse gas emission projections are a valuable analytical tool to assess Ireland’s progress towards achieving its 2020emission reduction targets set down under the EU Effort Sharing Decision (Decision 406/2009/EC). The EPA develops national emission projections on an annual basis, in collaboration with relevant State and other bodies. This collaboration ensures consistency with economic forecasts and with projected activity in sectors including energy, agriculture, and industry.