Wind and solar generation together exceeded coal and gas generation during several periods in late 2025, reflecting a major structural transition in the energy sector.
Australia’s renewable energy system has expanded rapidly over the past decade, particularly in solar and wind power. As of early 2026, rooftop solar capacity has reached approximately 28.3 GW, while renewable electricity now supplies more than 40% of generation across the main national electricity market. In some regions, especially South Australia, renewable penetration is significantly higher. Wind and solar generation together exceeded coal and gas generation during several periods in late 2025, reflecting a major structural transition in the energy sector.
The trend line of renewable energy development in Australia shows three distinct phases. Between 2010 and 2020, renewable energy grew steadily but remained secondary to fossil fuels. From 2020 to 2025, growth accelerated rapidly due to falling solar costs, battery investment, state-level renewable targets, and increasing public concern about energy prices and climate risks. Looking forward, the federal government and AEMO aim for renewable electricity to supply 82% of the grid by 2030 and support a net-zero electricity system by 2050. However, this transition is no longer limited by renewable resources themselves, but by infrastructure, coordination, and system stability.
Several barriers continue to slow the expansion of renewable energy in Australia. The country’s geography creates major transmission challenges because many renewable energy zones are located far from major population centers. New transmission infrastructure is expensive and difficult to deliver over long distances, across mountains, through farmland, and in environmentally sensitive areas. Grid congestion and connection delays have become major constraints for new projects. At the same time, large-scale batteries, pumped hydro storage, and flexible backup systems remain insufficient to stabilize high levels of renewable penetration fully. Labor shortages, supply chain costs, planning delays, and local opposition to wind farms and transmission lines also contribute to project uncertainty. In many regional communities, residents remain concerned that renewable projects may benefit investors and large cities more than local people.
Australia currently uses most of its solar and wind energy domestically rather than exporting electricity to other countries. Unlike Europe, Australia does not yet operate large-scale cross-border electricity interconnections. Most renewable electricity is consumed within the national grid for households, businesses, industry, and regional infrastructure. Rooftop solar plays a major role in household energy use, while utility-scale wind and solar farms increasingly support industrial operations and long-term corporate power purchase agreements. Renewable energy is also becoming more important in remote and off-grid areas where solar, wind, batteries, and microgrids can reduce dependence on diesel generation.
The relationship between renewable energy and fossil fuels in Australia remains complex and transitional rather than balanced. Coal and gas still play a major role in maintaining grid reliability, industrial production, and export income. At the same time, renewable energy has become essential for managing long-term energy security, climate pressure, and rising electricity costs. Australia’s renewable transition is therefore occurring under both environmental and economic pressure. The country possesses some of the world’s strongest solar radiation and significant wind resources, giving it considerable long-term potential. However, the success of the transition will depend on whether Australia can coordinate transmission infrastructure, storage systems, regional development, and energy policy quickly enough to support a stable and affordable low-carbon future.
This Post was submitted by Climate Scorecard Australia Country Manager, Mine Shu.
Learn More Resources
- Australian Energy Market Operator (AEMO), 2024 Integrated System Plan
- Clean Energy Council, Bridging the Gap to 82% Renewables
- Australian Department of Climate Change, Energy, the Environment and Water (DCCEEW)
- Infrastructure Australia, Renewable Generation and Net Zero Infrastructure Reports