External revenue generated by RWE npower dropped by 6 % to € 5,702 million. Electricity revenue was down 8 % to € 4.1 billion, while gas revenue remained unchanged at € 1.3 billion. Net of currency effects, figures for the two products posted growth, rising by 4 % and 13 %, respectively, resulting from price increases implemented a year earlier. RWE npower had lifted its electricity and gas tariffs for household customers by an average of 14 % and 26 % at the end of August 2008. This was followed by a competition-induced cut in electricity tariffs by 8 % as of March 31, 2009.