The Emissions Trading bill was approved without amendments by the Parliament on 17 December 2004 and entered into force on 1 January 2005. The Norwegian Domestic Emissions Trading Scheme ran from 2005-07, and generally aligned itself with the EU Emissions Trading Scheme, covering only CO2 emissions. Industrial CO2 emitters are allocated a total amount of emissions, and reducing emissions generates credits which can be sold to other emitters needing more. The Scheme covered CO2 emissions from energy use and some industrial processes, and only covered installations not subject to the CO2 Tax (see separate entry) or special agreements on emissions reductions with the State Pollution Control Authority. According to this agreement, existing process industry plants agreed to commit themselves to a 20% reduction in all greenhouse gas (GHG) emissions by 2007, compared to 1990 levels. IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]