Self-consumption

MODALITIES OF SELF-CONSUMPTION

There can be two types of self-consumption:

1. Modalities of supply with self-consumption without surplus. When there is an anti-discharge mechanism that prevents the injection of surplus energy into the transmission or distribution grid.
   
2. Modes of supply with self-consumption with surpluses. When the generation facilities can, in addition to supplying energy for self-consumption, inject surplus energy generated into the transmission and distribution grid.

Likewise, the generation facility/s destined to generate energy for any of the self-consumption modalities may be associated with the participating consumers:

1. Connecting through the internal network of the associated consumers or through direct lines, which is why they will be called self-consumption in installations close to the internal network.
2. By connecting through the distribution network, provided that they belong to the same low voltage network as the transformation center or that, being connected at low voltage, the distance between generation and consumption is less than 2,000/500m (depending on the technology) or that they are located within the same cadastral reference. In these cases, they will be called self-consumption in nearby installations through the grid.

The details of the modalities and requirements are defined in RD 244/2019, which is summarised in the following table:

(Source: Guía de Tramitación del Autoconsumo IDAE) 

What procedures do you have to carry out with us for this type of self-consumption installation?

In the case of self-consumers with surpluses, the procedures with e-distribución are the following:

1. Application for access and connection to the e-distribución grid: formalization of a request for generation connection to us, as a Distributor. The self-consumption with surpluses whose generation power is ≤15 kW and are located in urbanized land (with the endowments and services required by the urban legislation) and with internal network connection, will be exempt from this process. You can request access and connection through the private area of our website.

2. Answer connection point (only applies if the self-consumer has requested access and connection): We will reply to you by reporting the point of consent to the red of distribution and of the Technical and Economic Conditions about the actions that will be necessary in the power grid distribution.

3. Issuance of the technical-economic conditions: After acceptance of the connection point by the self-consumer, we send you the Technical and Economic Conditions about the actions that may be necessary in the electricity distribution network.

4. Technical Access Contract (TAC): this is the document that gathers the technical relations between e-distribución and the self-consumer from the moment of the connection. You can do this through the TAC Request service in the private area (see attached guide). For those self-consumption that do not require access and connection procedures, the signing of a TAC.

5. Verification of the measurement configuration according to RD 1110/2007: once the self-consumption installation has been finalized and legalized by you, we must verify the measurement configuration before connecting it to the network. You will have to request this verification through the email address: Inspeccionautoconsumo@enel.com.

6. Certificates of the reading manager and network manager: in case you need to register your installation as a producer, the certificates are included in article 39.1.d) "Network Manager" and "Reading Manager" of RD 413/2014 you must request them through the email address: Conexiones.edistribucion@enel.com

Finally, for the supply contract you have through your supplier to include the self-consumption modality you have chosen, it needs to be updated, for which you should contact your supplier. After adapting your supply contract, the installation will already be in service. If you have surpluses, the installation will be ready to compensate them in your bill (installations with power <=100 kW) or to sell them to the market, depending on the chosen modality.  

Autoconsumptions in nearby facilities through the distribution network,  which require a new connection point in the distribution network, with a production power equal to or less than 15 kW that are placed on built-up land and have the required allotments and services required by urban legislation, do require the management of an request to e-distribución to assess and manage the distribution network connection jobs reserved for the distributor and/or the supply of its auxiliary services.