Key data
| Regulation | Resolution of July 14, 2026, DGCEA — Environmental Impact Assessment Cristo Bailones Photovoltaic Solar Park |
|---|---|
| BOE Publication | August 1, 2026 |
| Effective date | August 1, 2026 |
| Developer | Parques Eólicos Ciudad Real SL |
| Installed solar capacity | 35.125 MW |
| Hybridized wind capacity | 42 MW (existing Cristo Bailones wind farm) |
| Total hybridized capacity | 77.125 MW |
| Location | Membrilla, Ciudad Real (province) |
| Final approved surface area | 37.40 ha |
| Initial requested surface area | 75.62 ha |
| Approved modules | 45,569 units |
| Initially planned modules | 78,708 units |
| Planned useful life | 30 years |
| Evacuation point | SET Alhambra 132 kV |
| Category | Energy / Environment |
The Cristo Bailones solar park receives environmental approval, but not on the terms originally proposed. The Resolution of July 14, 2026 from the General Directorate for Quality and Environmental Assessment formulates the environmental impact assessment (EIA) for this photovoltaic project of 35.125 MW in Membrilla (Ciudad Real), promoted by Parques Eólicos Ciudad Real SL.
The project was substantially modified during processing—initiated in 2023—following objections from the General Directorate for Natural Environment and Biodiversity of Castilla-La Mancha, which raised concerns about impacts on protected bird species, specifically the imperial eagle and black vulture. The result: an approved project but with half the original surface area.
What does this regulation establish?
The EIA is the administrative act that authorizes—with conditions—the execution of a project from an environmental perspective. Without it, the project cannot proceed. In this case, the resolution establishes:
- Conditional approval of the 35.125 MW photovoltaic solar park in Membrilla (Ciudad Real).
- Hybridization with the already operational Cristo Bailones wind farm (42 MW), sharing evacuation infrastructure to the SET Alhambra 132 kV.
- Mandatory project reduction: from 75.62 ha to 37.40 ha of surface area and from 78,708 to 45,569 photovoltaic modules.
- Specific mandatory environmental conditions for bird protection (imperial eagle and black vulture) and vegetation, which the developer must comply with during construction and operation.
- Useful life of 30 years, after which the developer must proceed with decommissioning and ecological restoration of the land.
Processing began in 2023 and the process included a substantial project modification in direct response to objections from the competent regional biodiversity authority. This type of modification—common in renewable projects in sensitive areas—extends timelines and reduces final installed capacity, with consequent impact on project profitability.
| Parameter | Initial project | Approved project |
|---|---|---|
| Surface area | 75.62 ha | 37.40 ha |
| Photovoltaic modules | 78,708 units | 45,569 units |
| Solar capacity | 35.125 MW (unchanged) | 35.125 MW |
Economic and operational impact
For the developer, Parques Eólicos Ciudad Real SL, EIA approval unlocks the next project phase, but with relevant operational implications:
- Surface area reduction by half: moving from 75.62 ha to 37.40 ha requires redesigning the park layout and optimizing module density. The 45,569 approved modules represent 57.9% of the 78,708 initially planned.
- Environmental compliance costs: EIA conditions on bird and vegetation protection generate additional monitoring costs, preventive measures, and possible operational restrictions during breeding or migration periods.
- Shared evacuation infrastructure: hybridization with the existing wind farm (42 MW) allows sharing the connection to SET Alhambra 132 kV, reducing evacuation infrastructure investment compared to an independent project.
- Decommissioning and restoration: the 30-year useful life requires provisioning decommissioning and ecological restoration costs from project inception.
For other renewable sector developers, this case is a direct reference: projects in areas with protected bird species in Castilla-La Mancha may suffer reductions exceeding 50% of requested surface area during environmental processing.
Who does it affect?
- Parques Eólicos Ciudad Real SL: direct developer, obligated to comply with all EIA conditions.
- Local administrations of Membrilla and San Carlos del Valle: municipalities in the project's area of influence, with implications for land use planning and municipal permits.
- Renewable energy developers in Castilla-La Mancha: the precedent of surface reduction for protected bird species applies to similar projects in the region.
- Project investors and financiers: the capacity reduction compared to the original project affects financial models and expected returns.
- Engineering and construction companies contracted for solar park development.
- Renewable energy sector in general: as a reference for environmental criteria applied by DGCEA in photovoltaic projects.
Practical example
Suppose a solar park developer in Castilla-La Mancha requests authorization for an 80 ha installation in an area with documented imperial eagle presence. Based on the Cristo Bailones precedent, they should anticipate that:
- The General Directorate for Natural Environment and Biodiversity of Castilla-La Mancha may require a reduction of up to 50% of requested surface area (in Cristo Bailones, from 75.62 ha to 37.40 ha, a 50.5% reduction).
- The number of modules may be reduced in similar proportions: in this case, from 78,708 to 45,569 units, a 42.1% reduction.
- Processing may extend several years (in Cristo Bailones, the process began in 2023 and the EIA was formulated in July 2026).
- EIA conditions will include bird monitoring measures and specific operational restrictions that generate ongoing costs during the 30-year useful life of the project.
Hybridization with existing infrastructure—as occurs with the 42 MW Cristo Bailones wind farm—is a factor that can facilitate approval by reducing the impact of new evacuation infrastructure.
What should companies do now?
- Parques Eólicos Ciudad Real SL: review in detail the environmental conditions imposed in the EIA and integrate them into the project plan, construction schedule, and operational budget.
- Developers with projects in processing in Castilla-La Mancha: assess whether their projects are located in areas with imperial eagle or black vulture presence and anticipate possible surface reductions in the financial model.
- Investors and financiers: update return models considering the risk of capacity reduction during environmental processing, especially in bird-sensitive areas.
- Engineering teams: design projects with flexibility to absorb surface reductions without compromising technical and economic viability of the whole.
- All developers: consult the complete resolution published in the BOE to know the exact detail of environmental conditions imposed, which will serve as reference for similar projects.
Frequently asked questions
Why was the Cristo Bailones solar park surface area reduced by half?
The General Directorate for Natural Environment and Biodiversity of Castilla-La Mancha presented objections to the original project due to impacts on protected bird species, specifically the imperial eagle and black vulture. As a result, the surface area was reduced from 75.62 ha to 37.40 ha and modules from 78,708 to 45,569 units. This modification was a necessary condition to obtain a favorable EIA.
What is solar-wind hybridization in Cristo Bailones and what advantages does it have?
Hybridization consists of combining the new photovoltaic solar park (35.125 MW) with the already existing Cristo Bailones wind farm (42 MW), sharing evacuation infrastructure to SET Alhambra 132 kV. The main advantage is reduced evacuation costs and lower environmental impact by not requiring independent connection infrastructure.
How long does the project last and what happens at the end of its useful life?
The planned useful life of Cristo Bailones solar park is 30 years. At the end of that period, the developer—Parques Eólicos Ciudad Real SL—is obligated to proceed with decommissioning of installations and ecological restoration of the land, in accordance with conditions established in the EIA.
What environmental conditions must the developer comply with?
The EIA imposes specific conditions for bird protection (focused on imperial eagle and black vulture) and vegetation. Although the exact detail of each measure appears in the complete resolution published in the BOE (BOE-A-2026-16824), compliance is mandatory and non-compliance could result in project suspension or administrative liability.
When did the Cristo Bailones solar park EIA become effective?
The Resolution of July 14, 2026 was published in the BOE on August 1, 2026, the date it also became effective. Project processing had begun in 2023, representing a process of more than three years until obtaining the favorable EIA.
Official source
Consult complete regulation at official source
Disclaimer: 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-2026-16824