TL;DR: Australia added a record 9.1 GW of grid capacity in the 2025/26 financial year, but over 5 GW of this total consisted of big utility-scale battery installations. While battery storage and solar-battery hybrids are expanding rapidly, the installation of new wind and solar generation is lagging behind, threatening the country's legislated 2030 renewable energy targets.
The Surge in Utility-Scale Battery Capacity
According to AEMO's latest Connections Scorecard, Australia's green energy transition achieved a historic milestone in the 2025/26 financial year, with a record 9.1 gigawatts (GW) of new generation and storage capacity reaching full output on the main grid. This figure represents more than double the volume recorded during the previous financial year.
However, a closer look at the data shows that this growth was heavily dominated by energy storage. Of the 9.1 GW added, just over 5 gigawatts consisted of big utility-scale battery installations. This surge in battery capacity, alongside the emergence of new solar-battery hybrids, represents a major technical achievement. These installations provide essential grid stability, frequency control, and peak-demand management, helping to support a grid that is currently powered by roughly 50 percent renewable energy and 50 percent fossil fuels.
The Generation Deficit and Wind Energy Hurdles
While the battery boom is a positive development for grid reliability, it highlights a critical shortage in new electricity generation. Less than 4 gigawatts of new wind and solar capacity reached full output during the same 12-month period. This rate of construction falls far short of what is required to meet the federal government's target of 82 percent renewable energy by 2030, and it is insufficient to allow the country's aging coal-fired generators to close on schedule.
There is, however, significant developer interest in expanding wind energy. Wind has historically been a challenging sector in Australia's energy transition, slowed by:
- Rising construction and material costs
- Complex local planning approvals
- Grid transmission capacity constraints
- Local social licence challenges
AEMO's Connections Scorecard showed a positive shift, with a record 12 wind project applications submitted during the year, totaling 5.2 GW of potential capacity. Additionally, the broader project pipeline awaiting connection grew by 42 percent, expanding from 53 GW to 75.4 GW.
Approval Bottlenecks and Commercial Obstacles
Despite the growing pipeline, actual project approvals and registrations fell compared to the previous year, with registrations dropping to 7.4 GW and application approvals to 14.2 GW. These processes continue to be dominated by battery storage rather than generation.
Margarida Pimentel, AEMO’s General Manager of Onboarding and Connections, noted that late-stage project modifications are now a primary cause of delays. Developers frequently introduce design changes and equipment substitutions after starting the approval process, requiring AEMO to conduct additional technical assessments. Project sales, extended financing negotiations, and commercial readiness issues also slow down progress.
Furthermore, developers face a major commercial roadblock: a lack of firm, long-term electricity contracts. Legacy utilities have little incentive to sign these agreements. If a lack of new generation capacity prevents coal plants from closing, these utilities will likely receive government payments to keep their coal-fired generators running. This dynamic leaves green projects heavily dependent on uncertain future demand, such as from commercial data centres.
Key Takeaways
- Storage Outpacing Generation: Over 5 GW of the 9.1 GW of grid additions in 2025/26 were big batteries, while wind and solar accounted for less than 4 GW.
- Targets at Risk: The slow rate of new wind and solar construction threatens the federal target of 82% renewable energy by 2030.
- Wind Pipeline Growth: Despite historical challenges, wind energy showed a strong recovery with a record 12 applications representing 5.2 GW of potential capacity.
- Late-Stage Delays: Project connection delays are increasingly driven by mid-process design changes, equipment substitutions, and financing delays rather than regulatory barriers.
