connection

The connection to the High Voltage distribution network begins with the opening of the Request for Conditions of Connection to the High Voltage Network, first assessing the technical conditions of the supply. In order to formalise the request, the Customer must at this stage detail the following technical aspects for the connection:

• Fill in the HV Conditions Request Form.
• Indicate the geographical coordinates of your installation/substation.
• Submit a plan showing the exact location of the delivery point and the area where the substation will be located, indicating access and the infrastructure to be built.
• HV and MV single-line diagram with the interlocking system to be implemented.
• Drawing of the substation, with its equipment (plan and elevations).
• Indicate what type of power supply you want: redundant (n-1), one overhead line, two overhead lines on the same supports, two overhead lines on If the installation already has a connection to the MV network, the Customer must indicate whether they want this to remain as a power supply resource and the respective power to be considered (Maximum Requested Power).
• Other technical aspects relevant to the Customer.

During the analysis of the request for connection conditions to the HV network, the customer manager will make prior contact, clarifying the best technical and economic conditions for the connection. 

The construction of the connection elements to the high voltage network is agreed upon between you and E-REDES. In the case of works whose construction takes place in E-REDES facilities, such as the placement of panels in substations, these cannot be carried out by third parties. 

Connection to the grid is made through overhead lines or underground cables, and it will be mandatory to have a high-voltage switching point near your substation.

The land destined for the switching station must have direct access from the public road and the surface use right will always belong to E-REDES if it is not its property.

The auxiliary services of the high-voltage switching station, for its remote control, must have a supply from the public distribution network in medium voltage.
 

The electricity supply starts after:

• Execution of the connection to the network.
• Settlement of network connection charges.
• Delivery of the work for which the applicant is responsible, where applicable;
• Installation of metering equipment;
• Authorisation from the land owners crossed by the power line;
• Transfer to E-REDES of the plot of land where the switching station is located, where applicable;
• Licensing, inspection and authorisation to start operating by the Directorate General for Energy and Geology (DGEG) of:
• the applicant’s premises.
• network connection elements.
• Signing of an operating protocol.
• Inspection of the interconnection protections, if any;
• Electricity supply contract with a energy supplier.
• Presentation of bank guarantees if applicable.