Australia launches AUD 100 million program for hybrid solar and battery retrofits

Australia’s power industry is seeing growing activity in both retrofits and fresh solar installations that integrate battery storage. In August 2026, the federal government unveiled the Distribution Connected Acceleration Program, known as DCAP.

This initiative specifically calls for the participation of 16 eligible projects. The available opportunities span retrofit, standalone, and hybrid battery energy storage systems, or BESS.

Program Mechanics and Administration

Infradebt manages the Distribution Connected Acceleration Program, offering AUD 100 million ($71.4 million) in debt financing. The Clean Energy Finance Corp., Australia’s green bank, funds this initiative.

Distinctly, the New South Wales state government is advancing long-duration storage via Electricity Infrastructure Roadmap Tender 9. This tender aims for up to 12 GWh of capacity and permits eligibility for expansions or retrofits at current generation assets.

Market Pipeline and Trends

RenewMap tracks more than 1,200 utility-scale battery energy storage system projects across Australia, representing over 224 GW and 744 GWh of capacity under development. Alex Thompson, RenewMap’s Director, notes that the development pipeline includes 938 BESS projects split almost evenly between standalone installations and those co-located with solar or wind assets. Thompson observes that most utility-scale solar entering the planning system now features accompanying co-located battery storage.

Operational Examples and Technical Approaches

• Alex Thompson, RenewMap’s Director, observed that solar assets equipped with retrofitted battery storage in congested grid areas face substantial network curtailment.
• X-ELIO runs the 200 MW Blue Grass Solar Farm in Queensland, European Energy manages the 58 MW Mokoan Solar Farm in Victoria, and RWE operates the 249 MW Limondale solar farm in New South Wales, each featuring operational or under-construction battery systems.
• Daniel Belton, CEO of RWE Renewables Australia, explained that co-locating Australia’s inaugural eight-hour 50+ MW/400 MWh Limondale BESS enabled the reuse of established infrastructure and current grid connections.
• Belton further noted that applying existing operations team knowledge and community ties lowered development expenses and sped up project completion.
• Belton cited the complex regulatory and technical hurdles involved in integrating battery storage into current renewable facilities as a primary difficulty.
• The Limondale BESS secured the first Long Duration Storage Long-Term Energy Service Agreement (LDS LTESA) awarded in the initial tender by ASL, the subsidiary of the Australian Energy Market Operator (AEMO).
• The 4.1 MW Warnertown Solar Farm, situated 215 km north of Adelaide, implemented a DC-coupled hybrid retrofit to bypass the transformer changes mandated by South Australia’s rigorous grid compliance standards for AC-coupled batteries.
• The Warnertown enhancement utilized Sungrow’s technology, swapping six current SG110CX PV inverters for SH110CX hybrid inverters, each connected to a 200 kWh PowerKeeper battery unit, thereby increasing storage by 1.2 MWh.
• Rock Liu, Technical Service Engineer at Sungrow Australia, described how DC-coupled designs eliminate the need for transformer upgrades, harvest solar power before AC constraints to mitigate clipping losses, and facilitate drop-in retrofits with little civil construction.

By adopting a DC-coupled strategy, the project sidestepped the protracted approvals and transformer enhancements usually required for AC-coupled setups. Liu points out that this design captures energy prior to AC limits, boosting charging efficiency and cutting clipping losses. The limited civil work needed to swap existing inverters for hybrid models enabled a single engineer to commission the entire upgrade, highlighting the efficiency of drop-in retrofit solutions.

Regulatory Frameworks and Commercial Structures

Daniel Belton, CEO of RWE Renewables Australia, noted that updating obsolete regulatory hurdles would stimulate fresh capital inflows, speed up project completion, and maintain affordable energy prices for end-users. He highlighted that the Limondale initiative demanded managing complex approval procedures and revising interconnection contracts to leverage current grid assets. AEMO’s subsidiary, the independent government services firm ASL, conducted the inaugural tender resulting in the award of the Long Duration Storage Long-Term Energy Service Agreement. Rock Liu, a Technical Service Engineer at Sungrow Australia, observed that the modular design of PowerKeeper units enables identical retrofit strategies to be deployed globally across commercial roofs, small-scale utility installations, and multi-megawatt solar farms.

What to watch

With 16 eligible projects now invited to participate, attention turns to how Infradebt’s financing will accelerate these specific hybrid and retrofit deployments.