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La actual crisis económica forzará a plantear una reflexión sobre la matriz energética actual, su sostenibilidad y la necesidad de cambio de modelo para notener que alterar en demasía el nivel de confort, variando muy poco los hábitos de vida. Esta obra aborda dicho problema en tres bloques claramente diferenciados, pero unidos por un mismo hilo conductor: la energía. En el primer bloque se analizan las causas del consumo energético. No se pone en cuestión si losactuales consumos de los españoles son necesarios o no, o si resultan elevados, pero sí que pueden y deben optimizarse. Este bloque se compone de: El modelo energético español. Aspectos ambientales y demográficos relacionados con laenergía. Energía y transporte. La vivienda y el confort. El segundo bloque intenta aportar soluciones a corto/medio plazo, de manera que en nuestra sociedadsea capaz de pasar de la incertidumbre a una sociedad que emplea la energía que precisa de manera limpia y sostenible. El bloque se compone de: Las energías renovables, y Biomasa y Bioenergía. En el último bloque se postulan y justifican las soluciones: Conclusiones. Energías renovables versus convencionales.Para establecer el nuevo modelo, se parte de un consumo eléctrico, para 2040,de 424,9 TWh/año, cifra que se justifica por el aumento demográfico, el incremento específico energético y un coeficiente reductor por eficiencia. El nuevomodelo energético postula que se puede llegar al 73,2% de generación a partirde fuentes renovables a un costo de generación muy inferior al actual. Al principio de cada capítulo aparecen unas conclusiones o puntos más destacados, demanera que se pueda llevar a cabo una lectura rápida del libro tan solo con los resúmenes iniciales.