Navabuena Solar Plant (449 MW): expropriations in Valladolid already authorized

Key data

Landowners of properties in the Valladolid municipalities of Villalba de los Alcores, La Mudarra and Valladolid city must urgently review whether their plots appear in the annex of the Resolution of July 6, 2026. The public utility declaration granted to Navabuena Solar, SL enables the promoter to occupy those lands without prior agreement with their owners, activating the forced expropriation or easement mechanism.

This step was the last major administrative obstacle for the project. The plant already had prior administrative authorization (April 2023) and construction authorization (July 2024). The public utility declaration is, therefore, the step that makes the project executable on the ground.

What does this regulation establish?

The General Directorate of Energy Policy and Mines grants Navabuena Solar, SL the declaration, specifically, of public utility for the photovoltaic installation called "Navabuena Solar". This legal figure has a direct and very specific consequence: the promoter is enabled to occupy land for which it does not have prior legal title.

This means that Navabuena Solar, SL can initiate two types of procedures on the plots included in the resolution annex:

• Forced expropriation: coercive transfer of ownership in exchange for assessed compensation.
• Easement of passage: imposition of a permanent right of use over the property, without transferring ownership, also with compensation.

The evacuation infrastructure affects lines of three different voltage levels:

The administrative history of the project is as follows:

Economic and operational impact

For affected landowners, the impact is immediate and of significant patrimonial consequence. The public utility declaration is not a future threat: it is an already effective legal title that allows the promoter to initiate the expropriation proceedings from the same day of its publication in the BOE, July 31, 2026.

The key economic aspects for landowners are:

• Compensation valuation: it is set according to the Forced Expropriation Law. If the landowner does not accept the fair value offered by the promoter, they can challenge it before the Provincial Expropriation Jury.
• Easement vs. full expropriation: in the case of evacuation lines (30, 132 and 400 kV), the usual practice is the imposition of easement of passage, which generates lower compensation but maintains ownership of the property.
• Cost of inaction: if the landowner does not appeal within one month and does not negotiate the fair value, the process advances without their active participation, with less ability to influence the final valuation.

For the promoter and the energy sector, the declaration represents the definitive unblocking of one of the largest photovoltaic plants in Castilla y León, with an installed capacity of 424.710 MW, sufficient to supply hundreds of thousands of homes.

Who does it affect?

• Owners of rural properties in Villalba de los Alcores, La Mudarra and Valladolid included in the resolution annex.
• Holders of public domain land affected by the routing of evacuation lines at 30 kV, 132 kV and 400 kV.
• Tenants and holders of real rights over plots included in the annex (may also be affected by the expropriation procedure).
• Communities of owners or local entities with communal assets in the affected municipalities.
• Promoters and advisors in the photovoltaic sector who follow the regulatory progress of major projects in Castilla y León.

Practical example

A farmer who owns a rural property in the municipality of Villalba de los Alcores verifies that their plot appears in the resolution annex as affected by the routing of the 132 kV evacuation line.

In this specific case:

1. Navabuena Solar, SL can initiate an easement of passage proceeding from July 31, 2026, without needing their prior consent.
2. The landowner will receive a fair value offer. If they do not accept it, they have 15 business days to submit their own appraisal sheet before the Provincial Expropriation Jury of Valladolid.
3. If they believe that the public utility declaration should not affect their property (for example, due to an error in the annex), they have exactly one month from July 31, 2026 to file an appeal with the State Secretariat for Energy.
4. If they do not act within that deadline, the resolution becomes final and room for maneuver is drastically reduced.

What should landowners do now?

1. Consult the resolution annex: access the full text in the BOE-A-2026-16734 and verify if your plot (cadastral reference or polygon/plot) appears in the list of affected assets and rights.
2. Act before August 31, 2026: the deadline to file an appeal with the State Secretariat for Energy is one month from publication (July 31, 2026). After that date, the resolution is final in administrative proceedings.
3. Consult a lawyer specialized in expropriations: if your property is affected, a specialist can help you challenge the inclusion, negotiate the fair value or appeal the valuation before the Provincial Expropriation Jury.
4. Do not ignore notifications from the promoter: once the expropriation proceeding is initiated, deadlines for responding are short. Not responding is equivalent to accepting the promoter's offer.
5. Document the current state of the property: photographs, agronomic reports or prior valuations before the start of works will serve as evidence in case of disagreement over the fair value.

Official source

Consult complete regulation in official source

Notice: This article is for informational purposes only and does not constitute legal advice. For specific decisions, consult a qualified professional. Source: https://www.boe.es/diario_boe/txt.php?id=BOE-A-2026-16734