European Communities (Greenhouse Gas Emissions Trading) Regulations 2004.

These regulations implement the European Union's Emissions Trading System (EU ETS) within Ireland. The system aims to reduce greenhouse gas emissions cost-effectively by setting a cap on total emissions and allowing companies to trade emission allowances. This affects industrial installations and aviation operators covered by the EU ETS. It establishes rules for monitoring, reporting, and verifying emissions, and for the allocation and trading of emission allowances.