A 30 MW battery hybridized with the Trévago photovoltaic plant has been authorized

The General Directorate of Energy Policy and Mines, under the Ministry for the Ecological Transition and the Demographic Challenge, has granted Planta Solar OPDE 42, S.L.U. the prior administrative authorization and the administrative construction authorization for the battery energy storage module OPDE Trévago 1 Hibridación, with an installed capacity of 30 MW. The decision is formalized in resolution SEE/DGPEM/Resolución PFot-ALM-184 (AAP_AAC), signed in Madrid on October 23, 2026, by the general director Manuel García Hernández, and published in the Official Gazette of the Province of Soria no. 129, dated November 11, 2026 (reference BOPSO-129-11112026), in section I, State Administration.

Hybridization with a plant already in operation

The new module is coupled to the existing photovoltaic park OPDE Trévago 1, with an installed capacity of 34.8 MW, definitively registered in the Administrative Registry of Electric Power Production Facilities under number RE-115150 and with an operating authorization issued by the Territorial Service of Industry, Trade and Economy of the Junta de Castilla y León in Soria on November 20, 2024 (file IE/FV/12-2021). The promoter submitted the application on November 4, 2025.

The installation will evacuate at the Trévago 220 kV substation, owned by Red Eléctrica de España, S.A.U., which on November 14, 2025, updated the access and connection permits to incorporate the storage. The recognized access capacity is 30 MW.

The technical characteristics detailed in the resolution are:

• Storage type: lithium iron phosphate (LFP).
• Installed storage capacity: 30 MW, according to article 5 of Royal Decree 997/2025.
• Envision ENS-LC20120 system: six systems of four containers and six racks per container.
• Storage capacity: 120.72 MWh, with a duration of four hours.
• Installed battery power: 30.18 MW.
• Inverters: six transformation centers with two Envision TWINSKID 5500 inverters of 2.5 MW each.
• Maximum active power of the HV/MV transformer: 33 MVA.
• Affected municipal districts: Fuentestrún, Trévago, and Matalebreras.

Environmental exemption via Royal Decree 997/2025

Royal Decree 997/2025, of November 5, on urgent measures to reinforce the electrical system, introduced an exemption from environmental assessment for the hybridization of storage modules in the cases it specifies. Under this regulation, the promoter requested on January 27, 2026, the exemption from the simplified procedure and the application of article 6, for abbreviated processing; after reviewing the file, the General Directorate concludes that the project meets the provided conditions.

The file was initiated in the Industry and Energy Area of the Government Sub-delegation in Soria, which issued a report on July 21, 2026, and was processed in accordance with articles 127 and 131 of Royal Decree 1955/2000. The public information process was published on May 18, 2026, in the Official State Gazette and on May 29, 2026, in the Official Gazette of the Province of Soria, with no objections raised.

Among the consulted bodies, the Ebro Hydrographic Confederation opened file 2026-OI-369 and issued a report without opposition; the State Roads Demarcation in Castilla y León, the Civil Protection and Emergencies Agency, and the General Directorate of Roads and Infrastructure of the Junta also responded without reservations, the latter with technical conditions. The city councils of the three towns, the Provincial Council of Soria, and several regional general directorates did not respond, which is understood as their conformity.

Deadlines, works, and appeal

The construction authorization requires the works to be executed according to the submitted project and the conditions of the annex, and sets the deadline for the operation authorization based on Royal Decree-law 23/2020. The promoter may request an extension of this deadline within three months following the granting of the construction authorization, in no case exceeding December 31, 2030, pursuant to article 25 of Royal Decree-law 7/2026. An administrative appeal (recurso de alzada) may be filed against the resolution, which does not exhaust the administrative route, before the Secretary of State for Energy within one month.

The authorized infrastructure comprises 30 kV underground lines up to a sectioning center and the actions on the existing circuits connecting the photovoltaic plant with the Trévago Promotores 30/220 kV substation; the remainder of the evacuation to the transmission grid is outside the scope of this resolution.

The state approval consolidates hybridization as a formula to expand renewable projects already in service in the rural Soria region, by allowing the storage of energy from the plant or the grid without subjecting the entire complex to a new environmental process. For the municipalities of Fuentestrún, Trévago, and Matalebreras, the file confirms the installation of lithium batteries alongside existing wind and photovoltaic infrastructures, within a provincial context of growing debate over the concentration of energy projects and their effects on the territory.

Source: Official Gazette of the Province of Soria, no. 129, November 11, 2026, section I. State Administration, pp. 4044-4051 (official reference: BOPSO-129-11112026 / Resolution PFot-ALM-184).