Key data
| Regulation | Resolution of August 25, 2026, from the General Directorate of Energy Policy and Mines |
|---|---|
| Publication | September 11, 2026 |
| Entry into force | September 11, 2026 |
| Authorization holder | Redexis Infraestructuras, SL |
| Plant promoter | Tauste Biometano, SL |
| Location | Saso de Mira industrial estate, Tauste (Zaragoza) |
| Affected pipeline | Gallur-Tauste-Ejea de los Caballeros |
| Maximum authorized flow rate | 850 Nm³/h |
| Injection pressure | 80 bar |
| Connection point | Between PK 18 L-45 and PK 18 L-50 |
| CNMC report | Favorable, issued on July 1, 2026 |
| Category | Energy / Renewable Gas |
| Year | 2026 |
The General Directorate of Energy Policy and Mines has formally authorized, through a resolution of August 25, 2026, the construction and operation of a new biomethane injection point on the primary transport pipeline Gallur-Tauste-Ejea de los Caballeros, in the municipality of Tauste (Zaragoza). The authorization directly affects Redexis Infraestructuras, SL as the infrastructure operator and Tauste Biometano, SL as the producer of the renewable gas that will be injected into the network.
The project did not require environmental impact assessment and received no objections during the public information process. The National Commission for Markets and Competition (CNMC) issued a favorable report on July 1, 2026, clearing the way for final authorization.
What does this regulation establish?
The resolution grants two simultaneous authorizations to Redexis Infraestructuras, SL:
- Administrative authorization to construct the facilities of the new injection point.
- Approval of the execution project, which allows work to begin without additional technical approval procedures.
The facilities will consist of a new injection point with isolation valve, located between kilometer points PK 18 L-45 and PK 18 L-50 of the Gallur-Tauste-Ejea de los Caballeros pipeline. This pipeline is a primary natural gas transport infrastructure, meaning it operates at high pressure and connects major regional distribution nodes in Aragon.
| Technical element | Detail |
|---|---|
| Installation type | New injection point with isolation valve |
| Receiving pipeline | Gallur-Tauste-Ejea de los Caballeros (primary transport) |
| Physical location | Saso de Mira industrial estate, Tauste (Zaragoza) |
| Maximum flow rate | 850 Nm³/h (normal cubic meters per hour) |
| Operating pressure | 80 bar |
| Connection section | Between PK 18 L-45 and PK 18 L-50 |
| Environmental assessment | Not required |
| Objections in public information | None received |
Economic and operational impact
This authorization has direct consequences for several actors in the renewable gas market in Spain:
- For Tauste Biometano, SL: Its biomethane production plant in Tauste transitions from being an isolated facility to being connected to the primary natural gas transport network. This allows it to commercialize the biomethane produced at network scale, access wholesale markets, and potentially obtain renewable gas origin certificates.
- For Redexis Infraestructuras, SL: It expands its network with a new renewable gas injection point, strengthening its positioning in the energy transition of the Spanish gas system.
- For the renewable gas market: Each new biomethane connection to the transport network is an operational and regulatory precedent that facilitates similar projects. The absence of objections and the speed of the process (CNMC report in July, authorization in August) is a positive signal for promoters of similar projects.
Spain has commitments for renewable gas penetration in the gas network derived from European regulations, particularly the Regulation (EU) 2023/2413 on renewable energy. Each authorized biomethane injection point directly contributes to those objectives.
Who does it affect?
- Redexis Infraestructuras, SL: Authorization holder and responsible for constructing and operating the new injection point.
- Tauste Biometano, SL: Producer of the biomethane that will be injected into the network; its business model depends directly on this connection.
- Other biomethane plant promoters in Spain: This case sets the procedure and actual timelines for obtaining similar authorizations.
- Gas transport network operators: Must adapt their operational protocols to manage renewable gas injection points at high pressure.
- Gas-consuming companies with decarbonization objectives: The availability of biomethane in the network facilitates the purchase of certified renewable gas to reduce the carbon footprint of their operations.
- Investors and energy infrastructure funds: The agility of the regulatory process (no objections, no environmental assessment) is relevant data for assessing the regulatory risk of similar projects.
Practical example
An industrial company based in Aragon that consumes natural gas and has emission reduction commitments can now negotiate with a gas supplier the supply of certified biomethane from the Tauste plant, which is already physically connected to the primary transport network.
With an authorized flow rate of 850 Nm³/h, the Tauste Biometano, SL plant can inject up to 7,446,000 Nm³ of biomethane per year into the network (operating at full capacity for the 8,760 hours of the year). This volume is sufficient to cover the annual gas consumption of several dozen medium-sized industrial facilities, or to supply renewable gas to thousands of homes connected to the distribution network downstream of the injection point.
For a promoter evaluating a similar biomethane project in another location in Aragon, this case demonstrates that the process can be completed with a favorable CNMC report in approximately two months and without the need for environmental assessment, provided the project meets technical requirements and generates no opposition in the public information process.
What should companies do now?
- Biomethane plant promoters: Review the Tauste case as a procedure reference. The process included a favorable CNMC report (July 1, 2026) and final administrative authorization (August 25, 2026), without environmental assessment or objections. Use it as a roadmap for your own projects.
- Companies with decarbonization objectives: Contact gas suppliers to explore certified biomethane supply contracts from already authorized injection points such as Tauste.
- Distribution network operators downstream: Verify that operational protocols allow proper management of renewable gas injected into the Gallur-Tauste-Ejea de los Caballeros section.
- Investors in energy infrastructure: Incorporate this case as a case study in assessing the regulatory risk of new biomethane projects in Spain. The absence of objections and the speed of the process are positive indicators.
- Legal and technical advisors in the energy sector: Update renewable gas project planning models with the actual timelines observed in this case.
Frequently asked questions
What exactly has the General Directorate of Energy Policy and Mines authorized?
It has granted Redexis Infraestructuras, SL, two simultaneous authorizations: administrative authorization to construct the facilities and approval of the execution project. The facilities consist of a new injection point with isolation valve on the Gallur-Tauste-Ejea de los Caballeros pipeline, located between PK 18 L-45 and PK 18 L-50, in the Saso de Mira industrial estate in Tauste (Zaragoza).
What is the maximum flow rate of biomethane that can be injected at this point?
The maximum authorized flow rate is 850 Nm³/h (normal cubic meters per hour) at a pressure of 80 bar. This is equivalent to a maximum annual capacity of approximately 7.4 million Nm³ if the plant operates at full capacity for the 8,760 hours of the year.
What company produces the biomethane that will be injected into the pipeline?
The biomethane is produced by Tauste Biometano, SL, whose production plant is located in the Saso de Mira industrial estate in Tauste (Zaragoza). Redexis Infraestructuras, SL, is the operator of the pipeline connection infrastructure.
Did this project require environmental impact assessment?
No. According to the resolution published on September 11, 2026, the project did not require environmental assessment. It also received no objections during the public information process. The CNMC issued a favorable report on July 1, 2026.
What are the implications of this authorization for other biomethane promoters in Spain?
This case is a practical reference for the procedure and actual timelines for connecting a biomethane plant to the primary transport network in Spain. It demonstrates that, if the project meets technical requirements and generates no opposition in the public information process, it is possible to obtain a favorable CNMC report and administrative authorization in a relatively short timeframe, without the need for environmental assessment.
Official source
Consult complete regulation in official source
Notice: This article is purely informational in nature 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-2026-19044
