Connecting Synchronised Generators larger than 6kW single phase or 11kW three phase

This section explains how to connect generators larger than 6kW single phase or 11kW three phase that may be exporting electricity to the Electricity Network for sale or supply.

Note: For connections made after September 2018 some Distribution Code conditions may change, arising from the need to be aligned with European Network Codes. For more information on this see our European Network Codes page.  

Enduring Connection Policy Stage 2 (ECP-2)

On 10th June 2020, the Commission of Regulation for Utilities (CRU) published its decision on the Enduring Connection Policy Stage 2 (ECP-2). 

The ECP-2.1 application window is now closed. The application window for ECP-2.2 is scheduled to open to all generating and storage technologies (greater than 0.5MW) from  1st September 2021 with a closing date of 30th September 2021. Please refer to the CRU website: Enduring Connection Policy Stage 2 (ECP-2) CRU/20/060 for further information.

All generating and storage technologies (less than or equal to 0.5MW) can apply on an ongoing basis, please see section 4.5 of the ECP-2 ruleset. The current Generator Application Forms NC5 Form | Download PDF 603 KB and NC5A Form | Download PDF 527 KB are available for download from the ESB Networks website for all applications.

EirGrid and ESB Networks (the System Operators or “SOs”) have taken this opportunity to review and publish an updated joint ruleset of how applications are assigned to nodes for offer processing. This update is based on feedback received from industry and the SOs’ own processing work since the original node assignment ruleset was published in 2009. The ruleset will remain under review, particularly as we complete annual batches, and updates will be published as required. Link to the ECP-2 Node Assignment Rules can be found here.

Generator Standard Charges 
The CRU published a decision paper (CRU/21/035) on ESB Networks 2020 proposals for changes to Generator Standard Charges (GSCs). The new 2021 ESB Networks “Standard Prices for Generator Connections 2021” document is published alongside this decision (CRU/21/035a). See link to CRU Decision here.

This decision is the outcome of a three year review process for these charges including two consultations and a number of independent advisor reviews. The GSCs approved by this decision will be used by ESB Networks from this point forward and, allowing for inflation, will apply until at least after Enduring Connection Policy – Stage 2, Batch 3 (ECP-2.3) offers.

Obtain a 1:50,000 'Discovery Series' Ordnance Survey map with both the location of your new generator and the site boundary clearly marked with a red pen.

You will also need a detailed site plan in the appropriate scale with both the location of your new generator and the site boundary clearly marked with a red pen

The Generator application forms have been updated in line with Enduring Connection Policy Stage 2, CRU/20/060. To apply for the 2020 Batch of ECP-2 please complete the appropriate ECP-2 application form: 

Existing applicants that received deemed complete status may apply to be considered for the 2020 batch of ECP-2 while retaining their received complete date and without requiring payment of a new initial application fee deposit / application fee (where MEC ≤ 0.5MW). For information around what details/information can be amended/updated from the original application form, please click here.


If your request is possibly eligible for processing as non-batch (for eligibility criteria please see CRU/20/060 and the ECP-2 Ruleset | 457 KB please complete the appropriate ECP-2 application form:


Community-led Energy Projects 

Community-led Energy applicants must include a completed Declaration form with their application. Should you require a Word version of this form please email

ECP-2 Declaration of Community Led Energy Project Form | 174 KB

The application form (NC5 / NC5A) must be submitted in electronic format. Electronic files must be submitted or via email to (all electronic files should be a cumulative maximum of 5MB or less).

Payment Amounts


Customers applying to connect an embedded generator are required to pay an application fee or a non-refundable deposit for processing the application. The fee amount depends on the proposed Maximum Export Capacity (MEC) or the proposed increase in MEC (where there is an existing connection agreement in place). A full listing of application fees is contained in Section 5.1 of ECP-2 ruleset.


Points to Note:

  • If an application fee is up to a value of €2,000 (incl. VAT), the full application fee should be submitted with all NC5 or NC5A generator application forms, if applicable.
  • If an application fee is greater than €2,000 (incl. VAT) then a non-refundable deposit of €2,000 (incl. VAT) should be submitted with all NC5 or NC5A generator application forms, if applicable. 
  • Your application will not be deemed complete until the minimum required payment is received and  incomplete applications will not begin to be processed until payment has been received. 
  • Pay a Networks' Invoice Should you wish to pay by EFT please include the project name as a reference. Your application should advise the reference of the EFT payment for receipting purposes. 
  • Once an application has been accepted into the 2020 Batch for ECP-2 and all clarifications have been completed, the balance of the application fee will be invoiced, see the appropriate fees listed below

The ECP-2 Ruleset is annexed to the CRU’s decision on the Enduring Connection Policy – Stage 2 (ECP-2 decision – CRU/20/060) and should be read in conjunction with this decision

ECP-2 Ruleset | 457 KB

MIC and MEC Capacity Ranges  A
Capacity (MIC)
Capacity (MEC)

Shallow Works
0 ≤ 11kW €0 €0 €0
> 11kW ≤ 50kW €0 €773 €0
> 50kW ≤ 500kW €0 €1,577 €0
> 500kW ≤ 1 MW €0 €8,956 €0
> 1 MW ≤ 4 MW €12,631 €18,347 €0
> 4 MW ≤ 10 MW €21,839 €18,566 €18,566
> 10 MW ≤ 20 MW €21,839 €33,491 €34,947
> 20 MW ≤ 100 MW €35,900 €48,104 €40,043
> 100 MW €49,160 €51,521 €45,557

Table 1 - ECP-2 Connection Application Fees (ex-VAT)
    Demand only: Fee = AMIC + CMIC - D
    Generation Only: Fee = BMEC + CMEC - D
    Demand and Generation: Fee = AMIC + BMEC + MAX [CMEC, CMIC] - D
    Where D is the sum of the credits for the pre-feasibility and advanced works studies still relevant.     
    Determination of D will be calculated by the relevant System Operator

Level Initial non-refundable
deposit (excl. VAT)
Balance of fee
(excl. VAT)

Total Fee
(excl. VAT)

Level 1 €874 €0 €874
Level 1.5 €874 €4,394 €5,268
Level 2 €874 €8,789 €9,662
Level 2.5 €874 €13,335 €14,209
Level 3 €874 €17,882 €18,755
Level 3.5 €874 €21,576 €22,450
Level 4 €874 €25,270 €26,144

Table 2 - Modification Fees (ex-VAT @ 23%)


For any other ECP-2 queries not covered on our website please refer to Enduring Connection Policy Stage 2 (ECP-2) CRU/20/060. For all other queries please email