Tabla de Contenidos: “…Bolik -- Power system requirements for wind power / Hannele Holttinen, Ritva Hirvonen -- The value of wind power / Lennart Söder -- Wind power in the Danish power system / Peter Borre Eriksen, Carl Hilger -- Wind power in the German power system : current status and future challenges of maintaining quality of supply / Matthias Luther, Uwe Radtke, Wilhelm R. …”