Dismantling of oil facilities in Huelva and Seville: environmental obligations 2026

Key data

Hydrocarbon sector companies operating in Huelva and Seville that plan to dismantle their facilities now have the mandatory environmental framework governing that process. The Directorate General for Quality and Environmental Assessment has issued a favorable environmental impact report for the project of dismantling hydrocarbon exploitation facilities and restoration of sites in both provinces, with a formulation date of April 9, 2026 and publication in the BOE on April 18, 2026.

This report is not an optional procedure: it is mandatory before executing any dismantling work. And its content is not advisory: the conditions it establishes are binding for the promoting company throughout the entire process.

What does this regulation establish?

The resolution formulates the environmental impact report of the dismantling and restoration project, which means that the Administration has evaluated the foreseeable environmental effects and has determined the conditions under which the project can be executed. The report is favorable, but that favorability is conditioned on compliance with specific obligations in three areas:

• Waste management: The promoting company must properly manage all waste generated during dismantling operations, in accordance with applicable waste regulations.
• Soil decontamination: Sites affected by hydrocarbon exploitation activity may present subsurface contamination. The resolution imposes specific decontamination obligations before, during and after dismantling.
• Restoration of the natural environment: Once facilities are dismantled, the company must recover the natural environment of the sites, returning the land to a state compatible with the pre-existing ecosystem.

These three obligations are not independent: they form part of a continuous process that the company must execute under administrative supervision throughout the project.

This type of resolution is common in the lifecycle of energy facilities: just as environmental assessment is required for construction, it is required for dismantling. What is relevant here is that non-compliance with conditions not only generates sanctions, but can cause work stoppage, with the operational and reputational cost that implies.

Economic and operational impact

The economic impact of this resolution materializes in two dimensions:

• Direct compliance costs: The promoting company must assume the costs of waste management, soil analysis and decontamination, and environmental restoration work. These costs are not quantified in the published resolution, but are inherent to any hydrocarbon facility dismantling process and can be significant depending on the extent of the sites and the degree of contamination detected.
• Non-compliance costs: Non-compliance with the binding conditions established in the report may result in administrative sanctions or work stoppage. A stoppage implies costs for equipment immobilization, personnel, third-party contracts and possible contractual penalties, in addition to the sanction itself.

From an operational perspective, the promoting company must integrate monitoring of compliance with the report conditions into its project planning. It is not enough to execute the works: compliance with each condition must be documented to prove to the Administration that actions are being taken in accordance with what is established.

Who does it affect?

• Project promoting company: The entity that executes the dismantling of hydrocarbon exploitation facilities in the areas of Huelva and Seville. It is the main party obligated by the report conditions.
• Hydrocarbon sector companies with facilities in Andalusia: Although the resolution is specific to this project, it serves as a reference for any company in the sector that has facilities in the process of closure or dismantling in the region.
• Contractors and subcontractors: Companies that physically execute dismantling, waste management or restoration work must know the binding conditions, as their non-compliance can be attributed to the promoting company.
• Environmental and regulatory compliance managers: Sustainability directors, compliance officers and HSE managers of affected companies must incorporate this report into their management and monitoring systems.

Practical example

An energy sector company has several hydrocarbon extraction facilities in the province of Huelva that have been inactive for years and must be dismantled to free up the land and comply with its concession closure obligations.

Before starting any dismantling work, the company needed to obtain the favorable environmental impact report, which is exactly what this resolution covers. With the report in hand, the company can begin the works, but must do so respecting the binding conditions established: hire authorized waste managers for materials generated in dismantling, conduct soil analysis at the sites to detect and treat possible hydrocarbon contamination, and execute a restoration plan that returns the land to a natural state compatible with the environment.

If during an administrative inspection it is detected that waste is not being managed in accordance with the report conditions, the Administration can order immediate work stoppage until the non-compliance is remedied, in addition to initiating the corresponding sanctioning procedure.

What should companies do now?

1. Verify if your company is the promoting company or subcontractor of the project: If you participate in the dismantling of hydrocarbon facilities in Huelva or Seville, you must know the full content of the environmental impact report and the binding conditions that apply to you.
2. Review the project waste management plan: Ensure that contracted waste managers are authorized and that the management plan is consistent with the environmental report conditions.
3. Plan soil decontamination analyses: Incorporate into the project schedule the planned soil analyses and action protocols in case contamination is detected.
4. Document compliance with each condition: Establish a registration system that allows you to prove to the Administration compliance with binding conditions in each phase of the project.
5. Designate an environmental monitoring manager: Assign internally (or through external consultant) a person responsible for supervising compliance with the environmental report throughout project execution.
6. Consult the complete resolution in the BOE: The full text of the resolution, with all detailed binding conditions, is available at BOE-A-2026-8574.