40 MW Solar Photovoltaic Plant in Segovia Approved: What It Means for the Renewable Sector in 2026

Key data

Corporación Eólica de Valdivia SL has received environmental approval to build the Piedras del Alto photovoltaic plant in Segovia province. The Directorate General for Quality and Environmental Assessment issued the favorable environmental impact statement on May 29, 2026, published in the BOE on June 18, 2026 (reference BOE-A-2026-13276). The approval is not unconditional: the developer must comply with a set of corrective measures required by bodies such as the Duero River Basin Authority and the Castilla y León Regional Government.

What does this regulation establish?

The resolution issues the favorable environmental impact statement (EIS) for the Piedras del Alto photovoltaic plant. This means that the project has passed the environmental assessment process and can advance to the next phases of authorization and construction, provided that the imposed conditions are respected.

The key technical and environmental elements of the project are as follows:

The selection of the location was decisive: among the evaluated alternatives, the one that minimizes impact on steppe birds and habitats of community interest was chosen, two of the most sensitive environmental factors in the Castilian plateau.

Economic and operational impact

For Corporación Eólica de Valdivia SL, the favorable EIS unlocks investment associated with building a plant of over 40 MW. Hybridization with the existing wind farm (34 MW operational since 2006) allows reuse of the 132 kV evacuation infrastructure already installed, which significantly reduces grid connection costs and electrical processing timelines.

From an operational perspective, the most relevant impacts are:

• Connection point optimization: by sharing evacuation at 132 kV towards Aranda de Duero, the developer avoids processing a new grid access from scratch.
• Cost of corrective measures: compliance with conditions imposed by the Duero River Basin Authority and the Castilla y León Regional Government will generate additional costs for engineering, environmental monitoring, and possible compensation regarding fauna and hydrology.
• Useful life period of 25 years: the investment return horizon is limited to this period, which conditions the project's financial models.
• Risk of suspension: non-compliance with required corrective measures may result in project suspension or the imposition of additional conditions by supervisory bodies.

Who does it affect?

• Corporación Eólica de Valdivia SL: direct developer, responsible for compliance with all EIS conditions.
• Municipalities in the project area in Segovia: affected by the occupation of 89.5 hectares and installation of 71,604 photovoltaic modules.
• Renewable energy sector: this project is a benchmark for solar-wind hybridization in Spain, especially in Castilla y León, where numerous wind farms exist with evacuation infrastructure that can be shared with new photovoltaic generation.
• Developers of photovoltaic projects in processing: the resolution establishes criteria and conditions that may serve as precedent for other EIS in similar environments.
• Duero River Basin Authority and Castilla y León Regional Government: bodies with supervisory competencies and responsibility for monitoring compliance with corrective measures.

Practical example

A developer of a 30 MW wind farm in Castilla y León, operational for over 15 years, with 132 kV evacuation infrastructure underutilized, can consider a model similar to Piedras del Alto: adding a photovoltaic plant of equivalent or greater capacity using the same grid connection point.

In the case of Piedras del Alto, hybridization allows the 40,814 MW photovoltaic to share the evacuation line of the 34 MW wind farm already in existence. This avoids processing a new grid access—a process that in Spain can take between 2 and 4 years—and reduces electrical infrastructure costs. In exchange, the developer assumes the corrective measures required by the EIS, which in projects of this scale typically include bird monitoring plans, hydrological measures, and archaeological surveys prior to construction.

What should companies do now?

1. If you are Corporación Eólica de Valdivia SL: review in detail all corrective measures imposed by the EIS (fauna, hydrology, archaeological heritage) and incorporate their compliance into the project plan and construction budget before starting work.
2. If you are a wind farm developer with available evacuation infrastructure: analyze the viability of photovoltaic hybridization at your location. The Piedras del Alto model demonstrates that the EIS is obtainable if the location with the lowest environmental impact is selected and conditions from consulting bodies are met.
3. If you are an advisor or consultant for renewable projects: identify in your client portfolio which existing wind farms have unused evacuation capacity and evaluate the processing of an EIS for solar hybridization.
4. If you are a municipality or local entity in the area of influence: consult the conditions of the resolution to understand the developer's obligations regarding environmental restoration and archaeological heritage in your municipality.
5. For all sector actors: monitor the conditions established by the Duero River Basin Authority and the Castilla y León Regional Government, as they set the standard of environmental requirements for similar projects in the Duero basin.

Official source

Consult complete regulation at official source (BOE-A-2026-13276)

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-2026-13276