Installing Distributed Generation rated at 3.68kW or higher

See below for steps connect large scale Distributed Generation equipment
How to install
Steps to follow
Which application to complete
Application forms
Contact us
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How to install

To install large scale Distributed Generation (DG) equipment rated at 3.68kW or higher, you will need to apply in advance. We'll assess your application to understand the work involved before sending you a quotation. On the day of the installation we may need to be there to complete some tests.

Before you apply

  • Check our DG heat map tool to get an idea of the capacity of our electricity network in your local area.
  • You can book a one-to-one surgery to discuss your project with one of our experts.

DG heat mapBook a session

Steps to follow

Step 1
Complete the relevant application form below or apply using Smart Connect if eligible.  
Step 2
We assess your application form. 
Step 3
We provide you with a quote to connect based on the work involved.
Step 4
Your installer can connect your generation to our network. We may need to be there on the day.

Which application to complete

Some installations can use Smart Connect, a tool which allows installers to apply for single domestic installations. Smart Connect will automatically assess applications and either issue approval or refer the application to the relevant team. Check if your installation is eligible to be raised on Smart Connect.

If your installation does not meet Smart Connect criteria follow the steps below:

  • To connect generation equipment rated at 3.68kW up to 50kW, complete the G99 - A1.1 Application Form. 
  • For all generation equipment rated at 50kW or higher, complete both the (ENA) G99 Generator Standard Application Form and also the relevant supplementary form on the ENA website. 
  • The supplementary form you need to complete will depend on the generation equipment you are installing. To check which one, download the  Engineering Recommendation (EREC) G99 below. 
  • Once you have completed the required forms, send it back to us at connections.gateway@ukpowernetworks.co.uk
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Application forms

  • Smart Connect

    Check to see if you can apply or notify us of your single domestic installation by using Smart Connect.

    Find out more

  • Generation from 3.68kW to 50kW: G99 - A1.1 Application Form

    Please download and complete form G99 A1.1 from the Energy Networks Association's (ENA's) website if you are installing Distributed Generation equipment rated at 3.68kW up to 50kW. You can also use our Distributed Generation Mapping Tool to check the capacity of our network in your area.    

    Download formUse  Mapping Tool

  • Generation 50kW or higher: ENA G99 Generator Standard Application Form

    Please download and complete form Standard Application Form (SAF) from the ENA's website if you are installing Distributed Generation equipment rated at 50kW or higher. You will also need to visit the ENA website to complete a supplementary form. You can also use our Distributed Generation Mapping Tool to check the capacity of our network in your area. 

    Download formUse Mapping Tool

  • Supplementary forms and guides

    Visit the ENA's website to access the relevant supplementary form for your project. You can find out which supplementary form is correct for you using EREC G99 below. For help with using EREC G99, you can also view the ENA's guides for all types of generators: 'Type A' and 'Types B-D'.

    Find formsType A guideTypes B-D guide

  • Engineering Recommendation (EREC) G99

    Download the Engineering Recommendation (EREC) G99 for more information on how generation equipment rated at 3.68kW or higher is governed and which supplementary forms to complete.

    Download

  • Need help? 

    Download our Frequently Asked Questions or have a browse of our Connections guides for more information. You can also email us your G98/G99 questions and our team will contact you back. 

    Download FAQsBrowse our guidesEmail us

Contact us

Call us

Lines are open Monday - Friday 8.30 - 5.00pm

0203 324 1460