In the case of the United Kingdom Climate Change Levy, climate change agreements with industry were met well ahead of schedule - possibly indicating that the agreements were not sufficiently ambitious. However, research has also indicated that the agreements generated additional emissions savings over and above those expected to result from the Climate Change Levy alone, due to increased awareness of energy efficiency and GHG emissions resulting from the Agreements (Ekins and Etheridge, 2006). Requirements of this nature can be considered a no-regret option, because, apart from administrative costs, they do not put a real burden on companies and indeed support companies in establishing a data information system on energy flows and GHG emissions, increasing transparency. On this basis, it is much easier to identify concrete investment options for improving energy efficiency and the use of renewable energies.