Australia Thermal Power Market Size, Share and Outlook - Growth Analysis Report and Forecast Trends 2026-2030

Australia's thermal power sector remains a cornerstone of the national electricity system, supplying a substantial share of the country's generation despite the rapid expansion of wind and solar capacity. The market encompasses coal-fired stations, gas-fired peaking plants, and cogeneration facilities spread across the eastern and western seaboards. Government data published in the Australian Energy Update 2025 confirms that fossil fuel generation continues to play a stabilising role amid increasing variable renewable energy penetration.

• •Market size: USD 12.5 billion (2025 estimate)
• •Projected CAGR: 2.5% through 2031
• •Sector role: baseload and grid reliability support

Sustained growth in overall electricity demand across commercial, industrial, and residential segments underpins market expansion. Government investments in energy infrastructure, including transmission upgrades and emissions-reduction technology, provide further momentum. Advances in plant efficiency and carbon capture readiness are enabling existing thermal generators to remain competitive in a decarbonising economy.

• •Rising national electricity consumption across key sectors
• •Public and private investment in generation and grid infrastructure
• •Technological improvements in efficiency and emissions management

The market is typically segmented by fuel type, with coal, natural gas, and liquid fuels each representing distinct sub-markets with differing trajectories. Geographically, the National Electricity Market covering eastern and southern states dominates thermal generation activity, while Western Australia operates under a separate grid with its own thermal fleet composition. Regional differences in resource endowment, regulatory frameworks, and renewable penetration rates shape investment patterns across jurisdictions.

• •Primary segmentation: coal, natural gas, and oil-fired generation
• •Eastern states (NEM) represent the largest concentration of thermal capacity
• •Western Australia maintains independent grid and generation mix

What are the recent trends and outlook?

The market is expected to see a gradual shift from coal to gas-fired generation as Australia's coal fleet ages and environmental regulations tighten. Investment in hybrid solutions that pair thermal generation with battery storage and renewable inputs is an emerging trend among major operators. Long-term outlook through 2035 will depend heavily on the pace of renewable energy deployment, government policy direction on emissions, and developments in low-emissions thermal technology.

• •Coal-to-gas transition as older coal stations exit the fleet
• •Increasing integration of thermal plants with battery and renewable assets
• •Policy and emissions regulations will be key determinants of long-term trajectory