Connecting Mini-Generation

Mini-Generation is the term which applies when an electricity customer installs inverter connected generation, within the range covered in the definition below, at a premises for the purpose of producing electricity. These generators are generally installed to locally produce clean electricity  primarily for self-consumption, thus reducing the need and cost of purchasing electricity. Mini-Generation allows customers to take action to address the issues of climate change, rising electricity prices and reliance on fossil fuels on our journey to a clean electric future together. The Irish Government will soon introduce a scheme to enable excess electricity produced by this type of generator to be sold back to electricity suppliers.   

Mini-Generation is designed to operate in parallel with the electricity network and is defined as a source of inverter connected electrical energy, and all associated electrical equipment, in the range as follows:

  • 25 amperes (6kVA) to 72 amperes (17kVA), when the connection is single-phase 

  • 16 amperes (11kVA) to 72 amperes (50kVA), when the connection is three-phase

ESB Networks will be opening a pilot scheme from 17th December 2021 for Mini-Generation applications to the distribution network. This pilot will run for six months and will enable up to 150 Mini-Generation applications to be processed via a new streamlined application process. 

To familiarise yourself with the technical requirements, please refer to the document, Conditions Governing the Connection and Operation of Mini-Generation (Download PDF | 502 KB).  Also see Step by Step Guide and Frequently Asked Questions (FAQ) section at the end of this page. Please note, that the FAQ section will be monitored and updated on a regular basis. If there are further queries on the application process, please email dsominigeneration@esb.ie.

Note:

If you wish to connect a generator with an output greater or less than that for Mini-Generation, go to ​Connect a Renewable and Embedded Generator or Connect a Micro-Generator, respectively.   

Types of Mini-Generators

  • The most common generators utilised in this capacity range are Solar-power (PV panels).
  • These are generally installed in large domestic, farm and other commercial connections.
  • A range of other generator technology types are possible once they are inverter connected.

Step by Step Guide

Important:

Do not install Mini-Generation unless you have executed the associated Connection Agreement. No works shall progress until the conditions in the Connection Agreement have been met and any ESB Networks construction work has been completed. 

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