What you need to know
If you are planning to install generation equipment with a capacity at or above 50kW, three-phase, it is important to follow the correct procedures to ensure compliance with regulations and to a smooth connection process. Below, are the steps and requirements for connecting your generation site to the grid under the ENA G99:
If you are installing a generator:
- Over 17kW single-phase, or
- Over 50kW three-phase, and
- It does not conform to previous standards such as G83/1-1, G83/2-1, or G98, then you must review the guidelines set out in ENA ER G59/2, G59/3, or G99.
A Transmission Impact Assessment (TIA) will also be needed, you can find out more information about it below.
How to apply
To apply for a connection, please complete and submit an application by emailing us at mcc@sse.com. When submitting an application, you will need to provide detailed information about the generation equipment.
Additionally, you must notify us at least 15 days before installing and commissioning any generation equipment greater than 50kW, as our team will need to attend the test and ensure compliance.
Connection Meetings
What is a Transmission Impact Assessment (TIA)?
A Transmission Impact Assessment (TIA) is a required review that checks how adding or changing a power source or electricity demand will affect the high-voltage transmission network. It ensures the system stays stable, reliable, and able to handle the extra electricity without issues.
The electricity grid must always balance how much power is generated and used to keep everything running smoothly. When new sources like wind farms, solar panels, or industrial facilities connect to the grid, they can affect this balance. A TIA helps find any risks or upgrades needed before the connection is approved.
Useful information
Get in touch
Would you like to speak to us before you apply or have a question about an existing application?