Substation construction

When am I required to build a substation?

You are required to build a substation building if:

• Your connection Maximum Import Capacity (MIC) is in excess of 200kVA (300Amps).
  • N.B. Some loads of 200kVA or less may require a substation in certain locations depending on available capacity.  A final position on substation requirements, will be determined once the appointed ESB Networks Engineering Officer has fully assessed the connection application request.
• The Connection agreement or Quotation letter which you received from us specifies that you must provide a substation building.

 For more details, view  National Code of Practice for the Customer Interface V 6.1 | 106 KB

General specifications

Medium Voltage substation building

• A Medium Voltage (MV) substation building contains the equipment that connects a site to the electricity network. Because this unit will subsequently form part of Ireland's electricity distribution system, it must be constructed in accordance with the specifications of ESB Networks.
• Ownership of substation buildings is transferred to ESB Networks following completion.
  

Construction specifications

The following describes the standards to which you must comply if you are required to construct a substation building.

Specifications for MV substation buildings