Capacity access at network nodes
Find out about power availability for generation facilities at our network nodes.
In compliance with RD 1183/2020 of 29 December, on access and connection to the electricity transmission and distribution networks, in article 5, and CNMC Circular 1/2021, of 20 January, which establishes the methodology and conditions for access and connection to the transmission and distribution networks of electricity production facilities, in article 12, the access capacities are published for each of the voltage levels > 1 kV of the HV/HV and HV/MV substations operated by e-distribución Redes Digitales SLU. These capacities are reported and calculated as defined in the Detailed Specifications for the determination of generation access capacity to the transmission grid and distribution networks approved in the resolution of 27 June 2024 of the CNMC. All information relating to occupied, available, and unresolved admitted access capacity is included, as well as the identification of the nodes limited by short-circuit power (Scc).
The available access capacity for each node has been determined as the maximum additional active power that can be injected at that node, taking into account only the "occupied" capacity reported at all network nodes and the planned installation scenario without considering additional reinforcements, in accordance with the criteria of CNMC Circular 1/2021 and the Detailed Specifications for the determination of access capacity. This information, of an indicative nature, does not obviate the need to carry out a specific study for each individual request that takes into account any variation in the scenario, such as the consideration of the requests in the pipeline with the best order of priority, both in the node under study and in other nodes of the network that may have an influence on it.
The limitations that may exist in other distributors' grids, in the transmission grid or in the substation itself, due to aspects of its configuration or operation and those relating to the viability of connection, are not taken into consideration. Said limitations would be evidenced in the corresponding acceptability and access and connection feasibility reports that must be carried out for each individual request.
The reported Available Access Capacity values should not be interpreted as simultaneous or summable capacity values. The connection of a generator at a node not only decreases the available access capacity at that node but also at the nodes of its neighboring network.
The reported values of occupied and admitted and unsettled capacity refer exclusively to generators connected or with access and connection permits granted or requested exclusively at these nodes, but not on lines or nodes of the underlying distribution network of these nodes.
Because the publications are usually made on a monthly basis, it is possible that they reflect available capacity in a node that may already be exhausted by “Admitted and Unresolved” requests, both in the node itself and in others in the network with influence on it or in their underlying networks.
Except in exceptional and duly justified cases, requests for access and connection that do not comply with the range of maximum and minimum power per voltage level established in the Detailed Specifications will be refused.
Requests made on nodes where the published capacity is 0 MW will be rejected, according to art 8.1 section d) of RD1183/2020.
NOTICE FOR STORAGE APPLICATIONS: Concerning the entry into force of the Resolution of 27 June 2024, of the National Markets and Competition Commission, which establishes the Detailed Specifications for the determination of generation access capacity to the transmission grid and distribution networks, specific operating patterns for storage may not be taken into account until these are approved by resolution of the National Markets and Competition Commission and published on this platform. Until this resolution is approved, storage facilities will continue to be studied according to the firm capacity existing in the grid, both in terms of their operation as generation and demand.
As stated in DA2ª of CNMC Circular 1/2021, requests for installed capacity greater than 5 MW in mainland Spain and 500 kW in non-mainland systems may require an acceptability report to assess the influence on the transmission grid of the connection to the distribution grid.
Capacity map
In this map, you will find indicated, with a geographical approximation, the nodes of the e-distribution network with the access capacity available for generation in each of them.
The capabilities map should be considered a merely informative replica of the capabilities published in the PDF capabilities list. In case of discrepancies, the official values are those that appear in the PDF.