INAGA authorizes a poultry macro-farm with 410,000 spaces in Siétamo

The Aragonese Institute of Environmental Management (INAGA) has formulated the environmental impact statement and granted the Integrated Environmental Authorization to the poultry rearing farm for laying hens promoted by Interovo Avícola Huesca, SL in Siétamo (Huesca), with a final capacity of 410,000 places, equivalent to 410 LSU. The decision is contained in the Resolution of October 19, 2026, of the aforementioned institute, which the Official Gazette of Aragon publishes this Monday, November 9, 2026, in issue number 216, with the official reference BOA20261109026. The administrative file is INAGA 500305/02/2026/05617.

INAGA, attached to the Department of Environment and Tourism of the Government of Aragon, is the competent body to process and resolve this type of procedure in the autonomous community. The announcement is inserted in section V (Announcements), subsection b) Other announcements, and its publication is ordered in accordance with article 64.3 of Law 11/2014, of December 4, on Environmental Prevention and Protection of Aragon, a regulation that establishes the environmental impact statement and the integrated environmental authorization as preventive control instruments.

The authorization arrives during an autumn of intense activity by the agency in the Aragonese poultry sector. In recent weeks, INAGA has published equivalent resolutions for farm expansions in Berbegal (up to 97,200 places, resolution of September 29, 2026), Zuera (105,000 places, from September 4) and Sádaba (108,000 places, modification of August 12). The municipality of Siétamo is also the setting for another environmental file in process, the organic waste recovery plant for biomethane production by Biored Hoya de Huesca, SL, whose environmental impact study was submitted for public information on November 6, 2026, with a thirty-day period for allegations.

What the resolution authorizes

The official announcement summarizes the basic data of the resolved file:

• Holder: Interovo Avícola Huesca, SL.
• Activity: poultry rearing farm for laying hens.
• Authorized final capacity: 410,000 places (410 LSU).
• Location: polygon 507, plot 104, according to the cadastre, of the municipality of Siétamo (Huesca).
• Affected municipalities: Siétamo.
• Instructing and resolving body: Aragonese Institute of Environmental Management.
• Date of resolution: October 19, 2026.

The administrative act has dual content: on one hand, it formulates the environmental impact statement of the project and, on the other, grants the Integrated Environmental Authorization, which is the decisive environmental permit for the facility to operate in accordance with the regulations for integrated pollution prevention and control.

Two capacity formulations in the same announcement

The heading of the resolution refers to the “expansion” of the operation “up to a final capacity of 410,000 places (410 LSU)”. However, the descriptive sheet accompanying the announcement describes the project as “02E- Existing hen rearing farm 350,000 places 350 LSU” on the same plot, with the objective to “update water consumption and reduce capacity”.

Both formulations coexist in the published text without further explanation, such that the exact scope of the intervention—expansion, update, or downward adjustment—can only be specified by referring to the full content of the resolution. The announcement does not detail technical conditions, water consumption, waste management plans, or corrective measures, details which appear in the complete document of the file.

Where to consult the full text

The Official Gazette of Aragon does not reproduce the full content of the resolution, but rather orders its publicity and refers to the administrative file. The full information can be consulted at the electronic office https://aplicaciones.aragon.es/inachkdoc/ using the Secure Verification Code CSV8Y-1JQZ0-4VZB8-KBREG.

The announcement appears signed in Zaragoza on October 26, 2026, by Diana Remón Galindo, Head of Technical Area III of Industrial Environment of the Department of Environment and Tourism.

Impact on the territory

The resolution closes the environmental path for a large-scale facility in the surroundings of the Hoya de Huesca, a region that already concentrates several intensive poultry and livestock operations. With 410,000 rearing places, the project by Interovo Avícola Huesca, SL is on the scale of the largest authorizations published this year in Aragon and makes Siétamo a point of attention for both the sector and the residents and conservation groups following the INAGA procedures. Furthermore, the official publication opens the door to the public consultation of the environmental conditions and the eventual challenge of the authorization before the contentious-administrative jurisdiction.

Source: Official Gazette of Aragon, no. 216, of November 9, 2026, section V (Announcements), b) Other announcements (official reference: BOA20261109026).