Muswellbrook Substation is a 330kV substation located in Muswellbrook, New South Wales, Australia.

The works are expected to be commissioned in 2021.


Muswellbrook Substation project, which is an upgrade substation, will be operated by TransGrid.

The designed voltage level of the substation is 330/132kV and the operating voltage level is 330/132kV.

The step-in voltage of the project is 330kV and the step-out voltage is 132kV.

Muswellbrook Substation project development status

The development of the Muswellbrook Substation project was approved by Australian Energy Regulator. The project is expected to be commissioned in 2021. Approximately $6m was financed by the authorities to undertake the construction works of the project.

About TransGrid

TransGrid (TransGrid), is a provider of electricity network and solutions. The company offers infrastructure services which include feasibility and estimation studies, option analysis, grid connection for new generators, asset redevelopment and consultation services; and telecommunication transmission services. It also provides connections and modifications, network planning, demand management and co-location services. The company supplies power through a network of high voltage overhead transmission lines, underground cables, switching stations and transmission structures.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.