ELECTRIC SYSTEM IN SPAIN: GENERATION CAPACITY, ELECTRICITY PRODUCTION AND MARKET SHARES

Spanish market was typically constituted by regions, where a monopolizer company had all electric roles: generation, transportation and distribution. As a result of the merger and acquisition transactions carried out in the nineties, the electric energy production market in Spain started to function with four large electricity groups. In the rest of the retail market, concentration remains high: the market shares of the three biggest companies add up to 75% in energy and 90% in customers.