An Industrial Revolution Powered by Renewables
South Australia’s peak electricity demand is forecast to double over the next 15 years, from 3.3 gigawatts currently to more than 6.5 GW, according to ElectraNet’s latest transmission planning report. This dramatic surge represents one of the most significant grid transformations in Australian energy history.
“South Australia is facing a jobs boom as industries seek to access the State’s unique combination of valuable minerals and world-class wind and solar renewable energy,” ElectraNet CEO Simon Emms said. “As industries such as mining, steelmaking, defence and AI expand, the demand for electricity in the state is set to grow significantly.”
The Numbers Behind the Boom
Over 75 prospective projects across 41 proponents are currently in discussions to connect to the South Australian transmission network, representing multiple times the state’s current peak demand in potential new load. This marks a stark contrast to the previous decade when only one major industrial connection was made.
Under high-growth scenarios, the state’s annual energy consumption could triple to 50TWh by 2040, driven by energy-intensive industries flocking to take advantage of South Australia’s renewable energy resources.
“We have the opportunity to set the new global standard for a modern economy, where rapidly growing business and industry are supported by clean energy.” — Simon Emms, ElectraNet CEO
What’s Driving This Unprecedented Demand?
Several sectors are powering this industrial renaissance:
Mining and Critical Minerals: Copper extraction and refining operations typically consume 15-25 megawatt-hours per tonne of refined copper, making these facilities among the most electricity-intensive industrial operations. With South Australia’s rich copper deposits becoming increasingly valuable for electrification, multiple mining projects are seeking grid connections.
Data Centres and AI: The surge in connection enquiries spans data centres, critical minerals processing, green steel production, defence manufacturing, hydrogen production facilities and large-scale desalination infrastructure. Adelaide is now hosting data centres designed for artificial intelligence workloads serving government and defence sectors.
Green Steel and Hydrogen: The state’s transmission network must accommodate large-scale mineral processing facilities requiring consistent, high-voltage power supply and green steel production operations with intensive energy requirements.
Grid Infrastructure Challenges
“Transmission infrastructure will be vital to create an electricity superhighway, taking energy from the source to where it is needed,” Emms said. “So while South Australia has an exciting economic opportunity ahead, we must have the ability to take it.”
ElectraNet has identified three critical transmission projects to support this growth:
| Project | Purpose | Impact |
|---|---|---|
| Northern Transmission Project | High-capacity north-south line | Significantly increase transfer capability |
| Eyre Peninsula Upgrade | 275kV line upgrade | Support energy-intensive industries |
| South East Expansion | Corridor reinforcement | Better utilise renewable energy flows |
The Data Centre Challenge Nationwide
While South Australia leads in renewable-powered industrial growth, the entire country faces pressure from data centres. Connection requests from new data centres in the past 18 months have totalled more than 10 gigawatts (GW) – equivalent to over half of New South Wales’ peak electricity demand.
“Without appropriate policy settings, this growth could place pressure on electricity infrastructure planning, system reliability and ultimately consumer costs,” Transgrid executive Jason Krstanoski warned.
For households concerned about rising energy costs, understanding these grid pressures becomes crucial. Energy Bill Relief is Ending: How to Prepare for Higher Power Bills in Australia in 2026 provides essential guidance on managing electricity expenses during this transition.
SA’s Renewable Energy Advantage
South Australia currently sources around 75 per cent of its annual electricity demand from wind and solar, with a target of reaching 100 per cent “net” renewables by the end of next year. Over the course of the year, wind and solar will have generated the equivalent of all the state’s electricity needs.
This renewable energy dominance makes SA uniquely attractive to energy-intensive industries seeking to reduce their carbon footprint. The state transmission company ElectraNet says the state is on the verge of a “once-in-a-generation” economic growth opportunity, underpinned by low cost, reliable and green grid.
What This Means for Australian Energy
South Australia’s transformation reflects broader trends across the National Electricity Market. As industries increasingly prioritise renewable energy access, states with strong wind and solar resources are becoming industrial magnets.
However, the grid must evolve rapidly to accommodate this growth. The challenge lies in ensuring infrastructure keeps pace with the scale and timing of new industrial developments, many of which are geographically dispersed and energy intensive.
For homeowners considering energy independence during this grid transformation, Solar Battery vs. Exporting to the Grid: Which Saves You More Money in Australia in 2026? examines the financial implications of different solar strategies.
As Australia’s energy landscape rapidly evolves, South Australia stands as a test case for whether the grid can successfully support both decarbonisation and industrial growth simultaneously. The answer will shape energy policy nationwide.