Australia’s First Gas-Free Steel Mill to Be Built in Newcastle, Production Begins in 2028

Newcastle is set to regain a major role in Australian steelmaking after Greensteel Australia selected Mayfield for the nation’s first gas-free steel mill. The $500 million project will be built on the former BHP Newcastle Steelworks site and is expected to begin production in early 2028, making it Australia’s first new steel mill in more than 30 years.

The plant is designed to produce 600,000 tonnes of finished steel each year while employing around 200 full-time workers. For the Hunter region, the announcement represents more than another industrial investment. It brings steelmaking back to the area where Australia’s steel industry first took shape, but with technology built for a lower-emissions future.

A New Steel Mill Without Gas-Fired Furnaces

The Mayfield project stands apart from older steelmaking models because it will not rely on gas-fired furnaces to generate industrial heat. Greensteel Australia says the mill will run entirely on electricity, meaning there will be no gas used anywhere in the production process.

That distinction matters because steelmaking is one of the hardest industrial activities to decarbonise. Conventional steel production requires extreme heat and is heavily linked to fossil-fuel use. Globally, iron and steelmaking accounts for roughly one-tenth of greenhouse gas emissions, making cleaner production methods a major priority for governments, builders and manufacturers.

At Mayfield, the company plans to combine hydrogen-fuelled direct reduced iron technology, electric arc furnace steelmaking, renewable energy and international industrial partnerships. More details about the company’s planned technology are available on the Greensteel Australia plant information page.

Why Newcastle Was Chosen

The location gives the project both practical and historical value. Mayfield’s former BHP steelworks site is closely tied to Newcastle’s industrial identity, and the region still has heavy-industry experience, port access, transport links and a skilled workforce.

By choosing Newcastle, Greensteel Australia is not simply building a new factory. It is placing modern steel production back in a region that helped define Australian manufacturing for generations. The project also fits with a broader push to rebuild local production capacity instead of relying too heavily on imported materials.

What It Means for Builders and Housing

Greensteel Australia chairman Ross Garnaut said steel produced at Mayfield would reduce the amount Australia needs to import. That local supply could be important for builders, infrastructure developers and manufacturers exposed to overseas shipping delays, currency movements and global price swings.

Garnaut also linked the project to housing. Steel is used across residential construction, commercial building, transport infrastructure and energy projects. A domestic supply of gas-free steel could help improve supply reliability, reduce exposure to volatile gas markets and lower the embodied carbon of homes and infrastructure.

For readers following wider Australian industry and construction trends, related updates can be found in business and economy developments.

First Stage of a Bigger Green Steel Plan

The Newcastle facility is being described as the first stage of a multi-stage project. That means the Mayfield mill could become the foundation for a larger low-emissions steelmaking platform in Australia if the first phase is delivered successfully.

This is important because demand for lower-carbon building materials is expected to grow as governments and companies pay closer attention to emissions across supply chains. Steel made without direct gas use may become more attractive for public infrastructure, housing and major construction projects where carbon reporting is becoming more important.

Government Policy Behind the Investment

Greensteel Australia chief executive Romany Ibrahim said the project was helped by the Commonwealth’s Future Made in Australia strategy, along with state and federal policy settings around housing and manufacturing.

He said support from the NSW and federal governments gave the company confidence to move ahead with the investment and bring manufacturing back to Newcastle. His remarks underline how public policy, energy transition goals and local manufacturing are increasingly connected in Australia’s industrial planning.

Project Details at a Glance

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Challenges Still Ahead

Although the announcement is a major step, the project still needs to move through construction, equipment installation and commissioning before steel production begins. Like any large industrial development, it will need to manage costs, electricity supply, technology integration and market competition.

The commercial test will be whether gas-free steel can be produced at scale while remaining attractive to Australian buyers. Imported steel, global pricing and energy costs will all shape how the Mayfield mill performs once it begins operating.

Why the Project Matters Now

The timing of the project is important. Australia is trying to build more homes, upgrade infrastructure and strengthen local supply chains while also cutting emissions from heavy industry. Steel sits at the centre of all those goals.

If the Mayfield mill opens as planned in 2028, it will mark a major shift for Australian manufacturing: a return of steelmaking to Newcastle, but with a production model designed around electricity, hydrogen-supported technology and lower direct emissions instead of gas-fired industrial heat.