The five main integrated utilities operating in the Spanish electricity sector (EDP, Endesa, Iberdrola, Naturgy and Viesgo) invested over 11 billion euros in their activities in this market between 2016 and 2018, according to a report prepared by Deloitte. Of this total investment figure, €1.15 Bn corresponded to R&D&I in those three years, of which almost a third was allocated to electricity in Spain over the period.