Grid constraints top Australia's renewables risk list as 70 GW pipeline stalls at the connection queue
A Clean Energy Council survey found grid bottlenecks ranked 23 percentage points ahead of every other risk category, while financial closures slumped 46% in 2025.
Eighty-five percent of respondents in the Clean Energy Council's inaugural Renewable Energy Risk and Insurance Index identified grid constraints, curtailment, and congestion as a growing concern, according to the index published Thursday (2026-09-17). The result placed grid risk 23 percentage points above any other risk category, the widest gap in the survey.6
The survey comes as Australia's pipeline of probable clean energy projects has jumped about 30% to as much as 32.3 GW following federal government tenders, with total accredited, committed, and probable capacity approaching 70 GW, Bloomberg data showed, as reported in June (2026-06-18). Yet financial commitments for new generation slumped 46% in 2025, with only 2.3 GW reaching financial close last year, the Clean Energy Council reported. A project pipeline nearly thirty times that size is accumulating while capital pulls back.4
Grid connection sits at the centre of the blockage. Sixty-eight percent of survey respondents rated the connection and registration process as difficult or very difficult, and 56% said it had become harder over the past three years. Developers are the most pessimistic group: 75% rated connection as difficult, against 50% of engineering, procurement, and construction contractors, equipment manufacturers, and operations and maintenance respondents.6
Sixty-nine percent of respondents said grid constraints are poorly addressed by existing contractual, regulatory, and insurance frameworks, suggesting the industry lacks effective instruments to price or transfer the exposure even where it can identify it.6
Approvals compound the picture. Seventy-one percent said state-based approvals had become harder to obtain over the past three years, while 66% rated Commonwealth environmental approvals as difficult or very difficult. Community opposition adds a further layer: 73% said social licence risk has changed how they engage with communities around project sites.6
Institutional investors have drawn similar conclusions. A separate survey by the Investor Group on Climate Change, covering 55 institutional investors managing a combined A$3.5 trillion in assets, found almost 75% of asset owners reporting no progress removing barriers, with 20% saying investment conditions had worsened, Renew Economy reported in June (2026-06-17).3
The operational data runs in the opposite direction from the investor mood. Renewables supplied 46.5% of National Electricity Market generation in the first quarter of 2026, the highest Q1 share on record, driven by wind, solar, and battery output. Queensland hit a new peak of 79.5% renewables-plus-storage share of consumption at 11:20 on Sunday May 31, 2026, up from 76.6% at 11:15 on Sunday October 20, 2024. Battery storage reached a record 16.9% instantaneous share of Queensland demand that same morning; a year earlier the comparable record stood at just 6.4%.2,4
That divergence between what existing assets are delivering and what new investment is producing is visible in the pricing data too. Renewables supplied more than 50% of NEM electricity over a full quarter for the first time in late 2025, and AEMO reported that average wholesale prices fell 44% to A$50 per megawatt hour for that quarter compared with 2024. Lower wholesale prices narrow the revenue assumptions needed to take projects to financial close.5,1
Australia's government has set an 82% renewable electricity target for 2030. The federal Capacity Investment Scheme's Tender 7, awarded in June (2026-06-18), covers 19 projects targeting 7.8 GW of generation and 7.9 GWh of battery storage. But awarded tenders and commissioned gigawatts are different things. With grid connection rated difficult by more than two-thirds of the industry and financial closures running far below pipeline additions, the rate at which transmission capacity expands will dictate how much of that 70 GW backlog becomes operating generation before the decade closes.4,5