July 25 Energy Storage Update: How Long Will Australia’s $2.3 Billion Battery Subsidy Last?
July 25, 2025
Since we published our post on July 19 about the Australian Government’s $2.3 billion home battery subsidy, it’s been widely shared across media channels. So here’s a fresh update based on this week’s installation data and STC application activity.
📊 STC Volume and Installations Update
On July 19, 1.44 million STCs were submitted — covering 8,918 installations. Some readers asked whether the monthly total might reach 3 million STCs, based on the daily rate. Now, we can answer that with confidence.
As of the night of July 25, the total has reached 2.248 million STCs, across 13,877 jobs. With 4 days remaining in July, we’re on track to hit the 3 million mark — confirming our projection from last week.
⚡️ System Size Trends and What’s Limiting Them
- Average STCs per installation: 162
- This suggests the average system size remains around 20kWh
- The current constraint is not demand, but battery inventory and inverter limitations — particularly in systems that don’t support flexible series/parallel expansion.
We expect this to shift. Based on upcoming stock arrivals, the average system size should increase to 25kWh or more in August.
📅 How Long Will the $2.3 Billion Last?
Let’s do the math.
- If the average system size stays at 25kWh, the $2.3 billion subsidy can support around 236,000 installations.
- Based on manufacturer shipment forecasts, we expect 5 million or more STCs to be claimed across August and September.
- By October, demand will likely remain strong, but inventory will start catching up to demand.
At the government’s fixed acquisition price of $40 per STC, and a total allowance of 57.5 million STCs, the full $2.3 billion in funding will likely be exhausted by April 1, 2026.
⚠️ In short: this isn’t a forever subsidy. It’s limited, and the clock is ticking.
🧰 Installer Capacity Is Not a Bottleneck
The current number of licensed battery installers across Australia appears to be sufficient to meet installation demand — capacity, not labour, is the limiting factor for now.
🔄 “Aren’t Batteries Just Going to Get Cheaper?”
We’ve heard this a few times: “Solar panels got cheaper over time — batteries will too.”
But here’s where the battery subsidy differs fundamentally from the solar one:
🌞 Solar STC Scheme
- Still active
- STCs are purchased by electricity retailers, who must surrender them to offset non-renewable sales
- Based on quarterly market rules, with no fixed end
- Works more like a carbon trading system
🔋 Battery Rebate Scheme
- Funded directly by the federal government (not energy retailers)
- Capped at $2.3 billion AUD
- Once that budget is used, it’s over — no extension, no ongoing market pricing
✅ Key Takeaways:
- Battery rebates are real, generous — and limited
- We're tracking toward 3 million STCs this July alone
- Based on current trends, the scheme may run until early 2026, but strong demand could shorten that
- Now is the best time to install a larger system (30–50kWh) to maximise your rebate before supply stabilises and subsidy demand outpaces funding
If you're still sitting on the fence, now you have the facts. Use the rebate while it lasts — because when it’s gone, it’s gone.
Discover how AI-driven solar and battery systems are transforming energy in Australia, lowering costs and improving efficiency for homes and businesses.
Massive Energy Storage at an Unusually Low Price A new large-capacity solar battery has arrived in Australia and it’s changing expectations for what homeowners can get from battery storage. Aussie Solar Batteries would like to introduce the HGNESS 51kWh modular battery system , paired with a three-phase hybrid inverter , delivering commercial-grade storage capacity for modern Australian homes. Even more surprising is the price. Complete HGNESS battery systems are now available from $5,500 , making it one of the most compelling price-to-capacity battery solutions currently available in the market. With government rebates and battery incentives changing from 1 May 2026 , homeowners considering battery storage may want to act soon before new rules take effect. Why Larger Solar Batteries Are Becoming More Popular Australia’s solar adoption has been incredibly successful, but many homes still export large amounts of unused solar energy back to the grid during the day. At the same time, electricity prices continue to rise while feed-in tariffs decline. This is why many households are now looking at larger battery systems that can store more solar energy for evening use. A typical Australian home can easily use 30–50kWh of electricity per day , particularly if it has: air conditioning electric hot water electric vehicle charging pool pumps larger households Traditional batteries in the 10–15kWh range often cannot cover an entire evening of usage. This is where large-capacity batteries like HGNESS become attractive . Meet the HGNESS 51kWh Modular Battery The HGNESS battery is a high-capacity lithium storage system designed to deliver serious energy storage for homes and small commercial applications. The system uses a modular stack design , allowing multiple lithium battery modules to be combined into a single tower capable of delivering over 51kWh of usable storage . That’s more than three times the capacity of many standard home batteries . Key highlights include: Massive Storage Capacity The HGNESS system delivers 51.2kWh of energy storage , enabling households to store far more solar energy for night-time usage. Safe LiFePO₄ Battery Chemistry The system uses Lithium Iron Phosphate (LFP) cells, widely recognised as one of the safest and most stable lithium battery technologies. Benefits include: long cycle life excellent thermal stability reliable performance over many years Modular Expandable Design HGNESS batteries use stacked modules, making them easy to scale and maintain while keeping a clean, compact tower design. Built for Australian Conditions The system features IP-rated protection , allowing indoor or outdoor installation and ensuring reliable performance across a range of environments. Paired With a Three-Phase Hybrid Inverter To maximise performance, the HGNESS battery is paired with a three-phase hybrid inverter , enabling seamless integration with modern solar systems. This allows the system to: store excess solar energy during the day power the home during the evening provide backup support during outages intelligently manage energy flows The hybrid design means the system can work with new solar installations or existing solar systems . Available HGNESS System Packages Aussie Solar Batteries currently offers three HGNESS system configurations: Ultra System: 51kWh HGNESS battery + 3-phase 10kW inverter - $5,500 Ultra Plus System: 51kWh HGNESS battery + 3-phase 15kW inverter - $7,700 Ultimate System: 51kWh HGNESS battery + 3-phase 20kW inverter - $9,900 Ultimate Plus System: 51kWh HGNESS battery + 3-phase 29.9kW inverter - $12,000 These packages are designed for larger homes, high-energy households and properties with significant solar generation . Installed by Australia’s Largest Solar Battery Installer When choosing a battery system, installation experience matters. Aussie Solar Batteries (Solar Systems Pty Ltd) is again Australia’s largest solar battery installer in 2026 , based on national installation data published by the Australian Government’s Clean Energy Regulator (CER). This means homeowners benefit from: extensive installation experience system design expertise proven battery deployment at scale ongoing technical support Important: Battery Rebates Change 1 May 2026 Battery incentive structures and rebate programs are expected to change from 1 May 2026 , which will affect system pricing and eligibility. We encourage homeowners considering battery storage to lock in installation before rebate rules change . As battery demand increases across Australia, installation schedules can also fill quickly during major policy transitions. Is the HGNESS Battery Right for Your Home? The HGNESS system is particularly well suited to households that: have large solar systems want significant backup storage use large amounts of electricity plan to install EV charging want maximum solar self-consumption With 51kWh of storage capacity , the HGNESS battery represents one of the largest residential battery options currently available in Australia . Learn more about HGNESS battery systems
Over the past few weeks, we’ve had detailed discussions with Whirlpool members and customers about system design, tariffs, product direction and installation timelines.
