The Ministry for the Ecological Transition and the Demographic Challenge (MITECO) has published in the Official State Gazette a total of 41 energy storage projects —including lithium-ion BESS and pumped hydro— amounting to 2,391.51 MW of capacity in various stages of administrative processing.

This year has been particularly active: 25 of these projects have seen developments in 2025, representing 1,335.62 MW moving forward with favourable environmental impact statements or preliminary and construction permits.

Notable developments this year include the “ST Palmosilla” BESS in Tarifa (Cádiz), with 200 MW planned by Roldwind; Picassent BESS, promoted by Enel Green Power, in Valencia, with 107.9 MW; the Lagerung project, by Our New Energy, in Girona, with 101.8 MW; and BESS Cuevas, with 55 MW in La Vall d’Uixó (Castellón), promoted by Sungrow.

These are joined by large initiatives such as La Farga BESS (Girona, 148.38 MW), driven by Our New Energy; and a set of hybrid installations with renewable plants, including Coria Villetas in Cáceres, adding 13.75 MW of batteries to a 156.2 MW PV plant developed by EDP Renováveis, and the Gecama complex in Cuenca, with a 100 MW storage module alongside PV and wind generation, promoted by Enlight Renewable.

In smaller-scale hybridisation, progress includes La Fernandina in Mérida (Badajoz), adding 24.04 MW of storage to its PV plant; in Talayuela (Cáceres), Statkraft is processing a 23.87 MW system linked to Talayuela II; and in Altarejos (Cuenca) Grenergy is moving ahead with four modules of 21.89 MW each —Aitana, Aspe, Bañuela and Turbón— integrated into solar farms.

The BOE also lists BESS linked to hydroelectric plants, such as the 15 MW system at the Valdecañas plant (Cáceres) and the 5 MW unit at Santiago Sil-Jares (Orense), both from Iberdrola, as well as the reversible hydroelectric plant Dehesa de Ganaderos in Garrapinillos (Zaragoza), aimed at irrigation pumping.

Project locations are spread across much of Spain, with notable concentrations in Castilla-La Mancha, Castilla y León, Extremadura, the Valencian Community, Catalonia and Andalusia, along with isolated projects in Aragón, Galicia and Asturias.

According to data from Red Eléctrica de España (REE), storage has around 9.5 GW of capacity with connection points granted and almost 12 GW pending, totalling nearly 22 GW at various stages of processing. Roughly half of this volume corresponds to stand-alone BESS, with the rest being hybrid projects with renewable generation or awaiting final access.

This large-scale interest, evident in both REE data and MITECO resolutions, strengthens the outlook for meeting the PNIEC 2030 target of 20 GW of installed storage capacity to support renewable integration and grid stability.

The combination of large-scale projects, strategic hybridisations and a diverse range of promoters —from major utilities like Iberdrola, Naturgy and EDP Renováveis to international players like Sungrow and Our New Energy, and domestic developers like Grenergy, Elawan Energy and Ríos Renovables— outlines a highly competitive scenario, pending the capacity market and key regulations needed to ensure profitability.