The Hunter Transmission project is the 110-kilometre northern section of the Sydney Ring. It involves building a new above-ground 500 kilovolt (kV) transmission line between Bayswater and Eraring in the Hunter region to connect the State’s existing 500 kV transmission lines.

The HTP will close the northern loop between existing transmission lines: 

• two 500-kV transmission lines in the east, which connect the power stations on the Central Coast (Eraring and Vales Point) via Eraring to the Kemps Creek substation in Western Sydney, and 
• two 500 kV transmission lines in the west, which connect Bayswater Power Station in the Upper Hunter to Mt Piper Power Station near Lithgow, and Bannaby substation in the Southern Tablelands.

The Hunter Transmission Project's preliminary corridor is divided into three sections: 

• HTP North – Bayswater to Broke. Most of the northern section of the preliminary corridor runs through the Hunter Valley Operations Mining Complex, industrial land and Department of Defence land. 
• HTP Central – Pokolbin to Corrabare. Much of the central section of the preliminary corridor runs through the Pokolbin and Corrabare State forests.
• HTP South – Olney to Eraring. The southern section of the preliminary corridor runs mostly through the Olney State Forest and includes a substation in the forest.

The project includes delivery of two new substations at Bayswater and Olney and upgrades to the existing Bayswater and Eraring Substations.

Design and construction of this project will be procured via a competitive, open market tender process.

The Federal Government, through the High Speed Rail Authority, is progressing the delivery of a high-speed rail network between Melbourne and Brisbane via Sydney.

The first stage of the network connects Newcastle with Western Sydney Airport via Sydney Central. The preferred route includes stations at Newcastle, Lake Macquarie, Central Coast, Sydney Central, Parramatta, and Western Sydney Airport. Stage 1 will be delivered across three phases:

• Stage 1A – Newcastle to the Central Coast: construction proposed to commence 2027, operational by 2037
• Stage 1B – Central Coast to Sydney Central: construction proposed to commence 2027, operational by 2039
• Stage 1C – Sydney Central to Western Sydney Airport: construction proposed to commence 2034, operational by 2043

The estimated P90 project cost is $61.2 billion for Stages 1A and 1B, and $32.4 billion for Stage 1C. 

The project scope includes:

• a dedicated high-speed rail alignment between Newcastle and Western Sydney Airport
• new stations at Newcastle, Lake Macquarie, Central Coast, Sydney Central, Parramatta, and Western Sydney Airport
• improvements to integrated transport networks
• trains capable of speeds greater than 250 km/h
• stabling, maintenance, rail systems and power upgrades, and
• corridor protection for future connections to Brisbane and Melbourne

The Gippsland Offshore Wind Transmission Project will support the connection of offshore wind infrastructure in the Gippsland Offshore Wind Zone to the mainland grid. The project will run from a new connection hub on the mainland near the Gippsland coast, which will service offshore wind farm connections, to a grid connection point near Loy Yang Power Station. 

The proposed project comprises the development, construction and operation of approximately:

• 55 kilometres of 500-kilovolt transmission lines
• an onshore connection hub, including high-voltage substation plant and equipment, and
• a grid connection substation near the Loy Yang Power Station.

The project was formerly known as the Greater Gippsland Transmission Project.

The first stage of the Suburban Rail Loop – SRL East – is a fully-tunnelled 26-kilometre metro corridor between Cheltenham in the South and Box Hill in the North. The line will include six stations, including new interchanges with existing heavy rail stations at Cheltenham, Clayton, Glen Waverley and Box Hill, with new stations at Monash and Burwood.

The Suburban Rail Loop Authority has separated SRL East into seven packages. Included in the scope of Works Package D is:

• 10 kilometres of twin tunnelling and cross passages between Glen Waverley and Box Hill
• Burwood and Glen Waverley station box excavations, including temporary retaining structures, and 
• an intervention shaft structure.

The Orana Battery Energy Storage System, developed by Akaysha Energy, involved the construction and operation of a 415-megawatt (MW) / 1,660-megawatt hour (MWh) lithium-ion battery energy storage system (BESS) and ancillary infrastructure.

The Project is located within the Central-West Orana Renewable Energy Zone, approximately two kilometres north-east of Wellington within the Dubbo Local Government Area.

The Mortlake Battery project is a proposed 300 megawatt (MW) / 650 megawatt hour (MWh) battery energy storage project being developed by Origin Energy. The battery is to be co-located at the Mortlake Power Station in Victoria, where Origin operates a 566 MW gas-fired generator.

This project is located within the Victorian South-West REZ V4 region. The battery will be connected to the 500 kilovolt network that runs through the power station.

Construction of the Mortlake battery will take place in three phases:

• site preparation and civil works
• component delivery and installation, and
• commissioning and demobilisation.

The WWSP will deliver a number of upgrades to Auckland's water supply. The full scope of the programme comprises: 

• a new 150-MLD water treatment plant
• a new 50-megalitre reservoir at Pukekohe West
• a 50-kilometre pipeline, including the crossing of the Manukau Harbour, and
• three additional pumps and sand separators for the raw water intake.

The North West Transmission Developments project (NWTD) will see the development of new and upgraded overhead high voltage alternating current transmission lines, linking substations at Palmerston, Sheffield, Burnie, Hampshire and Staverton.

The full scope of works for the project is:

• 238 kilometres of double circuit transmission lines, with 172 kilometres being upgrades to existing transmission, and 66 kilometres of new transmission to be built
• approximately 390 new towers
• upgrades to three substations (Burnie, Sheffield and Palmerston), and
• one new switching station at Hampshire Hills

The project is being delivered over two stages:

• Stage One: NWTD transmission upgrades between Palmerston-Sheffield-Heybridge, Stowport to Burnie ($921 million), and
• Stage Two: NWTD transmission upgrades from Staverton to Hampshire Hills ($550 million).

Following the announcement that Marinus Link Stage One would be the priority delivery of the Marinus Link, the project and timing staging was revised for the NWTD to deliver on focusing Stage One (approximately 60 per cent of the NWTD project) to align with Marinus Link Stage One. Delivery of Stage Two will await a final decision on the second Marinus Link cable.