city of 30,000 inhabitants, Ciudad Valdeluz in Yebes, Guadalajara; 13,000 dwellings in Seseña, Toledo and the Reino de Don Quijote complex in the province of Ciudad Real, with 9,000 dwellings and 4,000 hotel beds. As of 2019, the regional defence industry ranks third in Spain after those of Madrid and Andalusia, with a 5.8% share of sales. The bulk of the defence industry lies in cities such as Illescas, Toledo, Cedillo, Valdepeñas, Puertollano, Ciudad Real or Albacete. The Airbus Group is present in Illescas since 1992 and in Albacete (Airbus Helicopters) since 2005. Energy Although wind energy and solar energy have been playing increasingly important roles in Castilla–La Mancha, the majority of the energy generated in the region comes from the region's large thermal power stations: the Elcogas Thermal Power Station (owned by Elcogas) and Puertollano Thermal Power Station (owned by E.ON) in Puertollano as well as the Aceca Thermal Power Station in Villaseca de la Sagra (owned by Iberdrola and Unión Fenosa) Castilla–La Mancha is also the home of the Trillo Nuclear Power Plant near Trillo, Guadalajara. Existing solar thermal power plants (all using a parabolic trough collector) in the region include Manchasol-1 and Manchasol-2 in Alcázar de San Juan (49.9 and 50 MW respectively), Helios 1 and Helios 2 in Puerto Lápice (50 MW each), Ibersol Ciudad Real in Puertollano (50 MW). Regarding photovoltaic power plants, Picón I, Picón II and Picón III (50 MW each), located in Porzuna, were put into operation in 2019. Mining The region is rich in mineral resources, particularly the south, and they have been exploited since Antiquity. As of 2018, with 270 active mining sites (only one of them an underground mine), most of the extractive sector is dedicated to aggregates, clays, plasters and other mineral products, accounting for a 10.15% of active sites in Spain. Recent mining projects brought forward by the regional government in the province of Ciudad Real, rich in a number of strategic minerals, include those of tungsten (in between Almodóvar del Campo and Abenójar), phosphates (in Fontanarejo), and titanium and zirconium (in between Puebla de Don Rodrigo and Arroba de los Montes), but their final authorisations pend on satisfactory environmental impact statements, and they have also met the opposition from environmental organisations. Service sector The majority of the regional workforce—55.5 percent—is employed in the service sector, generating 49.8 percent of regional GDP, according to Economic and Social