Planning process

Planning process

Towards a new future for Spain

How does the transmission grid planning process work?

The planning process is a participatory process conducted by Spain’s General State Administration, its autonomous communities, its National Commission on Markets and Competition, Red Eléctrica and all of the sector actors. Society as a whole is also given a say in information and consultation processes.

It is structured into the following six phases: proposals, preliminary studies, debate, studies, consolidation and approval.

See the role each participant plays in the various planning phases here (Available only in Spanish).


A participatory process


What is the electrical transmission grid plan? (Spanish Law 24/2013, on the Electricity Sector)

It is the instrument that is used to define the series of reinforcements that must be made in the electrical transmission grid in a given period in order to incorporate the energy policy defined on a national and European level, and ensuring the electrical supply throughout Spain in accordance with the criteria of sustainability.

It therefore defines the new facilities that will be added to the transmission grid and how existing facilities will be reinforced, distinguishing between:

  • Facilities that should be developed during the specified planning period. These facilities are mandatory and they must therefore be built.
  • Facilities projected for after the planning period. These facilities are included so that the administrative formalities can be performed that will take longer than the planning period.
What is it for? What are its objectives?

The main objective of the plan is to design the transmission grid in a way that will comply with the national and European energy policies, and that will secure the country's long-term energy supply, taking into account environmental and economic efficiency criteria. In the current process, the primary objective of the future transmission grid will be for it to be a vector for facilitating the energy transition.

It also includes the actions that will be necessary for stakeholders to connect to the transmission grid that meet the requirements for doing so (large consumers, generators, etc.).

Are demand and generation planned?

Demand and generation are not planned, but indicative forecasts are made to plan the transmission grid efficiently and effectively.

Where and how is the plan published?

The plan is published digitally on the website of the Ministry for Ecological Transition (MITECO) once it has been approved by the government in the Council of Ministers.

Who prepares and approves the plan?

The plan is prepared by the General State Administration together with the autonomous communities and the cities of Ceuta and Melilla, and it is approved by the government after passing congress and following a hearing. The Strategic environmental evaluation has to be prepared for it to be approved.

What is Red Eléctrica's role in the plan?

Red Eléctrica provides technical support to the Ministry by conducting the studies that determine where the transmission grid needs to be reinforced and by analysing proposals from the various stakeholders. It uses the results of these studies to prepare the “Initial Transmission grid Development Proposal”, and then it analyses the arguments from the autonomous communities and sends the “Development Proposal” to the Ministry.

How often is a new plan approved?

By law, a plan has to be prepared every four years, and it must cover a six-year period.

Who participates? How do they participate?
  • The government, by issuing final approval of the planning document.
  • The congress, by passing the plan before it is approved.
  • The Ministry of Ecological Transition (MITERD), as the coordinator in charge of preparing transmission grid development plan.
  • The autonomous communities and the cities of Ceuta and Melilla, as main participants in the planning process.
  • The National Commission on Markets and Competition (CNMC), by preparing economic and financial sustainability criteria, and by ensuring the proposal complies with them.
  • Red Eléctrica, as MITERD’s technical adviser in charge of preparing proposals to develop the transmission grid.
  • Sector actors, by submitting development proposals, and providing any information that may be needed in their fields of competence.
  • The environmental office of the Ministry for Ecological Transition (MITERD), with the Strategic environmental evaluation [Evaluación Ambiental Estratégica, EAE].
  • Any entities or individuals during the consultation period.
Can any entity or individual participate directly? What are the mechanisms for participating?

Before it is approved, the electric plan must first go through a strategic environmental evaluation process that includes any queries from affected public administrations and stakeholders.

How are the criteria defined that facilities that will be included in the plan must satisfy?

The development of the transmission grid must allow for the development of the national and European energy policies and it must satisfy the requirements defined by the ministry in this regard.

New facilities must also meet a series of technical criteria stipulated in the following operating procedures:

  • 13.1 “Criteria for developing the transmission grid”.
  • 12.1 “Access applications for connecting new facilities to the transmission grid”.
  • 13.3 “Transmission grid facilities: design criteria, minimum requirements and verification of equipment and commissioning".
Does Red Eléctrica decide which infrastructures will be included in the plan?

No. Red Eléctrica prepares proposals for developing the transmission grid based on energy policy criteria that have been defined depending on the proposals received from stakeholder groups in the process, but Ministry has the final say on which infrastructures will be included in the plan.

Which documents specify how the planning process should be regulated?

The regulatory aspects are included in Spanish Law 24/2013, on the Electricity Sector, Spanish Royal Decree 1955/2000, Spanish Royal Decree 1047/2013, Spanish Law 21/2013, on Environmental Assessment and Spanish Royal Decree Law 1/2019.

How does the process work? What are its phases?

It is a transparent participatory process in which all of the stakeholders from the electricity sector participate, and it also allows for any entities or individuals to participate if they would like.

The process consists of the following phases:

  • Proposal phase (3 months). The Ministry for Ecological Transition publishes the start of the planning process in the Official Gazette of the Spanish State. After that, the autonomous communities and the sector actors prepare transmission grid development proposals that they send to the Ministry and Red Eléctrica. Meanwhile, the CNMC sends out a report with financial/economic sustainability recommendations that should be taken into account when developing the network.
  • Studies phase (6 months). Based on the information it has received and the criteria defined by the Ministry, Red Eléctrica conducts the necessary technical studies and formulates the initial development report and sends it to the MITECO.
  • Debate phase (1 months). The Ministry sends the autonomous communities the initial development proposal to get their considerations.
  • Studies phase (2 months). The Ministry sends these considerations to Red Eléctrica, which assesses and prepares the development proposal and sends it back to the Ministry.
  • Consolidation phase (4 months). After receiving and reviewing the CNMC’s assessment of the compliance with the economic/financial sustainability criteria, the Ministry prepares the electric power transmission grid development plan, which must include the strategic environmental declaration issued by the Ministry's environmental office. Any entity or individual may submit arguments during the EAE public information period.
  • Approval phase. Lastly, the electric power transmission grid development plan is approved by the government once it has been passed in congress.
Are environmental, social, etc. aspects taken into account?

The plan undergoes a strategic environmental evaluation that makes it possible to introduce environmental criteria into the decision making process in an incipient phase, pursuant to Spanish Law 21/2013, December, 9.

Attainment of the plan
Can transport infrastructures be built that are not specified in the planning process?

No, although certain work may be performed to modify existing infrastructures.

Who is in charge of authorising projects after the plan is approved?
  1. The General State Administration for primary transportation and secondary transmission grid infrastructures that affect more than one autonomous community. The primary transmission grid is made up of lines, substations, transformers and other electrical components with nominal voltages of 380 KV or more, and international connection facilities and the electrical systems of the non-mainland territories.
  2. The affected autonomous community, for secondary transmission grid facilities that only run through one autonomous community. The lines, substations, transformers and other elements of the transmission grid that are not included in the primary transmission grid.
What happens if the plan is not attained?

Since the plan is mandatory, the facilities specified in it need to be built. However, there may be reasons that make it impossible to build certain facilities: physical, environmental and economic reasons, or due to the relevant stakeholders quitting. In these cases the plan will need to be adapted using the methods specified by law.

Why are some infrastructures listed in successive planning documents?

This may occur for various reasons: on one hand, the reason for building a facility may be delayed, with this making it economically inefficient to build the facility earlier; on the other hand, since the plan must be approved every four years, it may be impossible to build certain facilities in such a short timeframe.

Modification/adaptation of the plan
Is the plan a static or a dynamic document?

It is a live process that is continuously changing; that is why there are tools for updating it.

What type of mechanisms are there for modifying the plan?

There are two ways to modify the plan:

  • Modifying specific aspects. These changes make it possible it possible to add a new action or eliminate a planned action, if necessary due to specific circumstances (due to unexpected events, due to new supplies, economic efficiency etc.) Since these types of modifications represent a major change in the plan, the process of making them is similar to formulating a new plan.
  • Technical adaptations. These changes make it possible to make the necessary changes to the development plans included in the planning, and processing them is simpler.