Transmission and distribution in the NEM - process overview
These pages provide a general description of the process of establishing or modifying an existing connection, including alterations to connected generating plant. The process applies to both transmission and distribution connections. Some details depend on the relevant connecting NSP’s processes, and will differ between regions of the NEM.
See the websites of relevant NSPs for more details on their processes.
Pre-feasibility
Explore the feasibility of your project and begin discussions with the connecting NSP, landowners, and relevant government authorities.
AEMO’s role: provide transmission network data if requested.
Early assessment framework
An optional stage that allows Original Equipment Manufacturers (OEMs) to independently validate their models with AEMO before entering a project-specific contract with a Connections Applicant. The service aims to reduce repeated studies, lower project costs, and accelerate connections.
AEMO’s role: work with OEMs to validate models, provide guidance, and identify issues early to streamline connections and alterations.
Enquiry
Submit a connection enquiry to the connecting NSP to determine the information required to submit an application to connect.
AEMO’s role: provide transmission network data if requested.
Pre-application
Consider optional pre-application support services to gain early insights, detailed analysis and assistance with modelling before lodging a formal application.
AEMO’s role: collaborate with the connecting NSP and the applicant to scope optional service packages and provide early engagement to support efficient project planning.
Application
Submit application to connect to the connecting NSP to initiate key activities for a new/modified transmission or distribution connection.
AEMO’s role: review and respond to the connecting NSP regarding any proposed negotiated standards that are AEMO advisory matters.
Contracts
Having received a complete application to connect, the connecting NSP prepares an offer to connect.
AEMO’s role: receive 5.7.3(g) notification from the connecting NSP within 20 business days from execution of the connection agreement.
Construction
The construction stage begins after all contracts have been executed. The Connection Applicant completes and implements designs, prepares commissioning programs, and finalises supporting information.
AEMO’s role: receive commissioning plans, and energy conversion model data (semi-scheduled plant), etc.
Completion
Finalise registration application requirements, provide commissioning plans, and test results.
AEMO’s role: review and approve commissioning plans, process applications for registration, review performance at successive hold points.