Key data
| Regulation | Resolution of April 16, 2026, from the General Directorate of Energy Policy and Mines |
|---|---|
| BOE Publication | May 4, 2026 |
| Entry into force | April 16, 2026 |
| Authorization holder | Red Eléctrica de España, SAU |
| Affected installation | Velilla 400 kV Substation, Velilla del Río Carrión (Palencia) |
| Authorized action | Expansion with incorporation of a new position |
| Authorizations granted | Prior administrative authorization + Administrative construction authorization |
| Category | Energy — Electricity transmission network |
| BOE Reference | BOE-A-2026-9685 |
The Velilla 400 kV substation in Velilla del Río Carrión (Palencia) gains capacity: the General Directorate of Energy Policy and Mines has authorized Red Eléctrica de España, SAU for both the construction and prior execution of the expansion, which consists of incorporating a new position to the existing installation. The resolution is dated April 16, 2026 and was published in the BOE on May 4, 2026 with reference BOE-A-2026-9685.
For electricity operators and project developers in the northern zone of Castilla and León, this action has direct implications: more capacity in the transmission network means more possibilities for connection for new projects, both for generation and industrial consumption.
What does this regulation establish?
The resolution grants simultaneously two authorizations that are necessary to execute any expansion in electricity transmission network installations:
- Prior administrative authorization: enables Red Eléctrica to initiate the project and necessary procedures before construction.
- Administrative construction authorization: allows physical execution of expansion works.
The specific action consists of incorporating a new position to the existing Velilla 400 kV substation. In the technical language of electrical substations, a position is the set of equipment (switches, disconnectors, measurement transformers) that allows connecting a new element to the substation bus, whether a transmission line, transformer, or generator.
The procedure followed is the regulatory one for transmission network installations, which means that the action has passed the administrative procedures required by the electricity energy sector regulations before obtaining final approval.
Economic and operational impact
This expansion has concrete operational and business consequences for several actors in the electricity market in the area:
| Impact | Detail |
|---|---|
| Greater maneuvering capacity in the network | The new position allows managing more energy flows in the Velilla 400 kV substation, improving the operational flexibility of the transmission network in Palencia. |
| Reinforcement of reliability and security | Expanding the available positions in a substation reduces dependence on single elements and improves the resilience of the national electricity system in that area. |
| New possible connections | The expansion potentially facilitates the integration of new renewable generation or industrial demand that needs access to the 400 kV network in northern Castilla and León. |
| Unblocking of projects in queue | Developers of wind farms, solar plants, or large-consumption industrial facilities that were waiting for access capacity in this area could see their connection procedures accelerated. |
Who does it affect?
- Red Eléctrica de España, SAU: holder of the authorizations and responsible for executing the expansion.
- Renewable energy developers in northern Castilla and León: wind farms and solar plants that need a connection point to the 400 kV network in the Palencia area.
- Large electricity consumption industries: companies with high industrial demand seeking connection to the transmission network in Palencia province or neighboring areas.
- Electricity operators and traders: any agent operating or planning assets in the area of influence of the Velilla substation.
- Local and regional administrations: the expansion reinforces the electrical infrastructure of the area, with implications for the economic and industrial development of the region.
Practical example
A developer of a wind farm in the northern Palencia area that has been waiting for months for access capacity in the 400 kV transmission network may find in this expansion a concrete opportunity. The new position enabled in the Velilla 400 kV substation opens an additional connection point in the transmission network of that area.
This means that, if the wind project meets the technical and administrative access and connection requirements established by Red Eléctrica de España as the transmission network manager, the Velilla expansion can be the node to which its evacuation line connects, unlocking the technical viability of the project.
The same reasoning applies to a large-consumption industry—for example, a green hydrogen production plant or a large-scale agri-food processing facility—that needs direct supply from the 400 kV network in Palencia province.
What should companies do now?
- Renewable developers with projects in the area: review whether their access and connection requests to the transmission network in Palencia can benefit from the new position enabled in Velilla 400 kV. Contact Red Eléctrica to update the status of their files.
- Large electricity consumption industries in northern Castilla and León: evaluate whether the expansion of the Velilla substation opens a direct connection route to the 400 kV network for their facilities or expansion projects.
- Operators and consultants in the electricity sector: incorporate this expansion into capacity availability analyses in the northern zone of Castilla and León to correctly advise clients with projects in process.
- All affected parties: consult the complete resolution in the BOE (reference BOE-A-2026-9685) to know the exact technical and administrative conditions of the authorizations granted.
Frequently asked questions
What exactly does the resolution authorize regarding the Velilla 400 kV substation?
The General Directorate of Energy Policy and Mines grants Red Eléctrica de España, SAU, both prior administrative authorization and administrative construction authorization to expand the Velilla 400 kV substation in Velilla del Río Carrión (Palencia), incorporating a new position to the existing installation.
When does the authorization for expansion of the Velilla substation enter into force?
The resolution was issued on April 16, 2026, the date corresponding to the entry into force of the authorizations granted. Its publication in the BOE occurred on May 4, 2026.
What operational benefits does the new position in the Velilla 400 kV substation provide?
The incorporation of a new position increases the maneuvering and connection capacity of the electricity transmission network in the area, reinforcing the reliability and security of the national electricity system and potentially facilitating the integration of new renewable generation or industrial demand in northern Castilla and León.