%A Claudio Antonio Feijoo Gonzalez %A Rafael Coomonte Belmonte %A Jos? Luis G?mez Barroso %A Sergio Ramos Villaverde %T Economics and forecast of energy consumption in NGN networks: the case of Spain %X Reducing energy consumption is one of the main goals of sustainability planning in most countries. For instance in Europe, the EC established the objectives in the Communication ?20 20 by 2020 Europe's climate change opportunity?. %P 1-15 %B 19th International?Telecommunication?Society?Biennial?Conference %D 2012 %C Bangkok, Thailand %I Telecomunicacion %L upm20980