CSF Anguita Solar Plant (85.80 MW): Authorization to Modify Electrical Line in Soria

Key data

CSF Continua Anguita SL has the green light to modify the evacuation infrastructure of its 85.80 MW photovoltaic plant in Soria. The Dirección General de Política Energética y Minas has granted, through a resolution dated 25 February 2026 (BOE-A-2026-7540), the prior administrative authorization and the construction administrative authorization required to carry out the works on the 30 kV underground electrical line.

The resolution also includes the declaration of public utility of the installation, a legal instrument that streamlines the processing of right-of-way easements and, where applicable, expropriations over the land through which the new route of the line runs in the municipalities of Arcos de Jalón and Medinaceli.

What does this regulation establish?

The resolution grants two distinct authorizations to CSF Continua Anguita SL:

• Prior administrative authorization: enables the project from the standpoint of energy planning and installation viability.
• Construction administrative authorization: allows the physical execution of the modification works on the 30 kV underground line.

Both authorizations are mandatory steps in the regulated procedure for electricity generation and transmission installations in Spain. Without them, the works cannot legally begin.

The most relevant element for third parties is the declaration of public utility. This declaration is not automatic in all projects: its granting implies that the Administration recognizes that the infrastructure serves a general interest, which gives the titleholder company the power to request the imposition of right-of-way easements over private land and, if necessary, to initiate compulsory expropriation proceedings.

Economic and operational impact

For CSF Continua Anguita SL, this resolution is a critical milestone in the plant's roadmap: without the construction authorization, the modification of the evacuation line cannot be executed, which blocks the full operability of an 85.80 MW installation. At that scale, every day of delay in commissioning represents a significant volume of energy not generated and not billed.

For landowners in Arcos de Jalón and Medinaceli, the impact is different: the declaration of public utility activates a process that may result in the imposition of a right-of-way easement over their properties. This restricts land use within the affected strip and may generate compensation, the amount of which is determined in the corresponding administrative procedure.

For the renewable energy sector in general, this resolution is an example of the standard procedure that large solar plants must follow when they need to modify their evacuation infrastructure — a process that can take months if not properly managed from the outset.

Who is affected?

• CSF Continua Anguita SL: titleholder of the photovoltaic plant and the evacuation line. May begin the modification works.
• Landowners in Arcos de Jalón (Soria): their properties may be affected by the route of the underground line and subject to right-of-way easements.
• Landowners in Medinaceli (Soria): same situation as the above.
• Photovoltaic sector companies with plants under processing: this resolution is a precedent for the procedure and timelines they can expect for modifications to evacuation infrastructure.
• Advisors and consultants for renewable energy projects: must be aware of the prior and construction authorization requirements, as well as the implications of the declaration of public utility.

Practical example

A farmer who owns land in the municipality of Arcos de Jalón receives a notification from CSF Continua Anguita SL informing them that the new route of the 30 kV underground line runs through their plot.

Thanks to the declaration of public utility included in this resolution, the company can request the Administration to impose a right-of-way easement over that property. The owner has the right to participate in the administrative procedure, submit any arguments they deem appropriate, and receive compensation for the restriction on land use within the affected strip. If no agreement is reached with the company, the procedure may result in compulsory expropriation with an administrative valuation.

This scenario applies to any landowner along the route of the line in Arcos de Jalón and Medinaceli. The key is to act from the moment the notification is received, not to wait until the procedure is well advanced.

What should companies do now?

1. Landowners in Arcos de Jalón and Medinaceli: consult the file BOE-A-2026-7540 and verify whether their plots are included in the route of the 30 kV underground line. The sooner the impact is identified, the more room there is to act in the procedure.
2. Owners affected by easements: seek specialized legal advice in expropriation and energy law before signing any agreement with the titleholder company. Compensation is negotiable during the mutual agreement phase.
3. CSF Continua Anguita SL: initiate the notification process for affected landowners and the easement imposition procedure in accordance with the granted declaration of public utility.
4. Renewable energy companies with similar projects: review whether their evacuation infrastructures require modifications and anticipate the processing of prior authorizations to avoid delays in plant operability.
5. Photovoltaic project advisors: document this file as a procedural reference for future modifications to evacuation lines in large-capacity installations.

Official source

Disclaimer: This article is for informational purposes only and does not constitute legal advice. For specific decisions, please consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-7540