Key data
| Regulation | Resolution of 16 July 2026, from the General Directorate of Energy Policy and Mines |
|---|---|
| BOE Publication | 6 August 2026 |
| Entry into force | 6 August 2026 |
| Developer | Planta FV 127, SLU |
| Cancelled project | Aquarii Wind Farm — 70 MW (León) |
| Associated hybrid project | Aquarii Solar Photovoltaic Plant — 89,632 MW |
| Reason for cancellation | Incompatibility with the Cantabrian capercaillie recovery plan (unfavourable report from the Junta de Castilla y León) |
| Category | Energy / Renewables |
| Year | 2026 |
A hybrid renewable project totalling 159,632 MW of installed capacity in the province of León has just disappeared from Spain's energy map. Developer Planta FV 127, SLU, formally withdrew the application for prior administrative authorisation for the Aquarii wind farm (70 MW) and its hybridisation with the Aquarii Solar photovoltaic plant (89,632 MW), and the General Directorate of Energy Policy and Mines accepted this withdrawal through a resolution of 16 July 2026, published in the BOE on 6 August 2026.
The reason was not technical or economic: it was environmental. The Junta de Castilla y León issued a report declaring the project environmentally unviable due to its incompatibility with the Cantabrian capercaillie recovery plan, an endangered species whose habitat overlaps with the planned implementation area.
What does this resolution establish?
The resolution formally accepts the withdrawal submitted by Planta FV 127, SLU, regarding three simultaneous applications:
- Prior administrative authorisation for the Aquarii wind farm (70 MW) in the province of León.
- Authorisation for the hybridisation of the wind farm with the Aquarii Solar photovoltaic installation (89,632 MW).
- Authorisation for part of the evacuation infrastructure associated with both installations.
The file had followed a lengthy process since July 2024, which included ordinary environmental impact assessment and consultations with multiple bodies. The determining factor was the report from the Junta de Castilla y León, which declared the project environmentally unviable upon detecting direct incompatibility with the Cantabrian capercaillie recovery plan. Faced with this blockade, the developer chose to withdraw the application rather than continue a process with a predictably negative outcome.
The withdrawal implies the definitive closure of the file and the loss of all accumulated processing rights. There is no possibility of reactivating the project on the same terms.
Economic and operational impact
The cancellation of a project of this scale has direct economic and strategic consequences for the developer and the sector:
- Loss of processing investment: The file was initiated in July 2024 and went through the entire ordinary environmental assessment process. The costs of engineering, environmental studies, consultations and administrative management accumulated during this period result in no return.
- Loss of renewable capacity: The total 159,632 MW of the hybrid project will not be incorporated into the electricity system, representing a lost opportunity for both the developer and the region's decarbonisation objectives.
- Cancelled evacuation infrastructure: The part of the evacuation network associated with the project is also rendered void, which may affect grid planning in that area of León.
- Reputational and strategic risk: For Planta FV 127, SLU, it means reconsidering its project portfolio in areas with wildlife restrictions.
This case illustrates a systemic risk for the renewable sector in Spain: incompatibility with endangered species recovery plans can invalidate projects in advanced phases, generating significant losses of time and capital.
Who does it affect?
- Developers of wind and photovoltaic farms with projects in the distribution area of the Cantabrian capercaillie (Asturias, Cantabria, Basque Country, Castilla y León, Galicia).
- Developers of hybrid projects (wind + photovoltaic) planning installations in areas with active species recovery plans.
- Investors and renewable infrastructure funds with exposure to projects in processing phase in environmentally sensitive areas.
- Legal advisors and environmental consultants accompanying authorisation processes in Castilla y León and other communities with protected habitats.
- Renewable project portfolio managers who need to review the environmental risk of their pipelines.
Practical example
The case of Planta FV 127, SLU, is the real example: a developer company initiates in July 2024 the processing of a 159,632 MW hybrid project in León. Over more than a year, the file progresses through the ordinary environmental assessment process, with consultations to multiple bodies. At some point in this process, the Junta de Castilla y León issues an unfavourable report due to incompatibility with the Cantabrian capercaillie recovery plan.
Faced with the declared environmental unviability, the developer has no margin to correct the project without radical redesign (change of location, drastic reduction of affected area). The rational decision is withdrawal: withdraw the application, assume the costs already incurred and free up resources for projects with better environmental viability.
The result: a project that on paper totalled 70 MW wind and 89,632 MW photovoltaic will never operate. The lesson for other developers is clear — environmental viability in areas with protected wildlife must be assessed before initiating formal processing, not during.
What should companies do now?
- Audit the project pipeline in areas with endangered wildlife: Review whether any project in the portfolio is located in the distribution area of the Cantabrian capercaillie or other species with active recovery plans. Do this before advancing in processing.
- Request preliminary environmental report from the Autonomous Community: Before submitting the formal application for prior administrative authorisation, obtain a preliminary assessment of environmental compatibility with the species recovery plans in force in the area.
- Include environmental-wildlife risk in viability analysis: Incorporate this factor as a go/no-go criterion in the site selection phase, at the same level as wind or solar resource and grid connection.
- Review the associated evacuation infrastructure: If a main project falls through, verify whether the planned evacuation infrastructure can serve other projects or if it is also cancelled.
- Consult the Cantabrian capercaillie recovery plan: Identify the exclusion and restriction zones established by the plan to assess the compatibility of new sites in Castilla y León, Asturias, Cantabria and other affected communities.
Frequently asked questions
Why was the Aquarii wind farm in León cancelled?
Developer Planta FV 127, SLU, submitted a withdrawal after receiving an unfavourable report from the Junta de Castilla y León that declared the project environmentally unviable due to incompatibility with the Cantabrian capercaillie recovery plan. The General Directorate of Energy Policy and Mines accepted this withdrawal through a resolution of 16 July 2026.
What total capacity did the Aquarii project lose with its cancellation?
The hybrid project totalled 159,632 MW: 70 MW from the Aquarii wind farm and 89,632 MW from the Aquarii Solar photovoltaic plant. Both installations, together with part of their evacuation infrastructure, are definitively cancelled.
Can the developer request authorisation again for the same project?
The withdrawal implies the definitive closure of the file. The developer could submit a new application, but would need to resolve the environmental incompatibility with the Cantabrian capercaillie recovery plan, which in practice would require a radical redesign of the project or a change of location.
What areas of Spain are affected by the Cantabrian capercaillie recovery plan?
The Cantabrian capercaillie inhabits mainly the Cantabrian mountain range, with presence in Asturias, Cantabria, Basque Country, Galicia and Castilla y León (especially León and Palencia). Developers with projects in these areas must verify compatibility with the recovery plan before initiating processing.
Since when was the Aquarii project in processing?
The file was initiated in July 2024 and followed an ordinary environmental assessment process with consultations to multiple bodies. The withdrawal resolution was issued on 16 July 2026 and published in the BOE on 6 August 2026, which represents more than two years of processing without result.
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-2026-17175