Renewable and Embedded Generators

For Information on connecting generators larger than 6kW single phase or 11kW three phase that may be exporting electricity to the Electricity Network for sale or supply.

  • Enduring Connection Policy Stage 2 (ECP-2)
    On 10th June 2020, the Commission for Regulation of Utilities (CRU) published its decision on the Enduring Connection Policy Stage 2 (ECP-2), the current pathway for generators, storage and other system services technology projects to connect to the electricity system. Please click here for further information on ECP-2 Policy, available on the CRU Website. 
  • The application window for ECP-2.2 is open to all generating and storage technologies (greater than 0.5MW) from Wednesday, 1st September 2021 until 5pm Thursday, 30th September 2021.

  • ECP-2 Categories
    Under ECP-2, grid connection applications are categorised as follows:
  • Category A (Batch): Generation, storage and other system services technology projects (MEC >0.5MW)
  • Category B (Non-Batch): Small-scale generation (11kW<MEC ≤0.5MW), autoproducers and DS3 system services trials (MEC ≤0.5MW)

For further information on how to apply for a category A or category B projects please click on the link below.

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  • Category C (Community-led): Community-led renewable energy projects (MEC  ≥ 0.5MW and  ≤5MW). Please note, a subsequent Clarification Note (CRU/21/069) to the ECP-2 Decision (CRU/20/060) was published by the CRU on 1st July 2021, to change the definition of Community-Led Renewable Energy Projects. In Order to be processed under Category C in ECP-2.2 and subsequent ECP batches, Community-Led Projects must be now 100% community-owned.

For further information on how to apply for a community-led project, please click on the link below: 

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Parallel Generators

For information on Connecting a generator that operates in parallel with the electricity network please see here. This information is relevant to businesses that want to reduce their electricity import by having their own source of power, or for peak-lopping or peak-shaving schemes. Such generators cannot be used to supply or sell electricity via the national grid.

Interface Protection Guidelines
These slides (PDF | 171 KB) outlining guidelines for costs and applicability of Embedded Generation Interface Protection (EGIP) were presented at the CRU Gate 3 Liaison Group meeting as a clarification and update of the Conditions Governing document in June 2013.

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Standby Generators

Information about connecting a standby generator is available here. Standby generators are used by businesses that require emergency generation. They cannot be used to export or sell electricity onto the electricity network. In addition, they cannot operate in parallel with the electricity network.
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Micro-generation is the term which applies when a private individual (e.g. a householder) installs a small generator on his/her property for the purpose of producing electricity for his/her own use. See here for more information on connecting a micro-generator
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Generator Statistics

  • Connections Made
    Statistical information on all Generators currently connected or contracted for connection to the Distribution System may be found in our Connected and Contracted Generators Section.

  • Performance Monitoring
    A document, called Windfarm Performance Monitoring Process outlines the process that is adopted by Eirgrid and ESB in monitoring the performance of Wind Farm Power Stations (WFPS) in terms of the categorisation of controllability assigned following regulatory decision SEM-062-11 for priority Dispatch. This document is available for download here (PDF | 547 KB)

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Generator Availability Capacity Map

Interactive map in ESB Networks website that shows DSO controlled HV station information including its location and transformer capacity. Check capacity here.

View Capacity Map

It is your responsibility

To ensure that a generator is installed by a registered electrical contractor to Safe Electric standards, and that it complies with all governing regulations.

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