On 5 February 2013 the lower house of the Dutch Parliament adopted amendments to the Heating Supply Act (Warmtewet). The Heating Supply Act was passed by both houses of Parliament during the period July 2008 - February 2009, but never entered into force because the Minister of Economic Affairs, Agriculture and Innovation (the "Minister"), in consultation with the lower house, decided that amendments were necessary. This decision was based on a study conducted by the Netherlands Competition Authority (now part of the Authority for Consumers and Markets, the "ACM") on the impact of the new law, particularly on suppliers' profits. The bill submitted by the Minister to amend the Heating Supply Act was aimed at simplifying the Act and improving its workability, keeping in mind its basic principles.