For Victoria homeowners considering solar or solar + battery installation, the coming months offer a unique — and time-sensitive — opportunity. The 2026 solar rebate drop under the federal Small-scale Renewable Energy Scheme (SRES) means that after 31 December 2025, the upfront discount you receive on solar panels or battery installations will shrink significantly. For many, this raises the question: Should you act now — or wait? This guide explains what’s changing, how much you could lose by waiting, and when it still makes sense to invest later.
What’s Changing in 2026: Fewer Rebates, Bigger Cost Rebate mechanics:
What are STCs and the “deeming period”
Under SRES, the incentive for rooftop solar (and — from 2025 — home batteries) comes from tradable certificates called Small-scale Technology Certificates (STCs). The number of STCs — and thus the rebate amount — depends on a “deeming period,” representing how many years are left until SRES ends (currently set for 2030).
Each year the deeming period drops by one year. For 2025 the deeming period is 6 years; from 1 January 2026 it becomes 5 years. That means the same solar system installed in 2026 will generate fewer STCs — and therefore a smaller discount — compared with a system installed in 2025.
Impact on battery rebates
Home batteries became eligible under SRES from 1 July 2025 under what’s often referred to as the Cheaper Home Batteries Program.
However — like solar panels — the rebate for batteries also reduces over time. From 2025 to 2026, battery rebate calculations drop (for instance, from ~9.3 STCs per usable kWh in 2025 to ~8.4 STCs per kWh in 2026 for new installs).
How Much Could You Lose by Waiting?
Because both solar-panel and battery rebates shrink starting 1 January 2026, homeowners delaying their install could pay hundreds to over a thousand dollars more up front for the same system.
- For a typical 6.6 kW solar system, estimates suggest that rebate value may drop by AUD $500–$800 compared with 2025 value.
- For battery-enabled systems, fewer STCs per kWh translates to smaller battery discounts — making batteries relatively more expensive if installed after the drop.
Because these rebates directly reduce upfront cost, losing them means you’ll need a bigger out-of-pocket payment — and your payback period will lengthen accordingly.
Why It Might Still Be Worth Buying — Even After the Drop
- Long-term savings & rising electricity costs: As electricity prices trend upward over time, the savings from generating your own power grow — improving the long-term return even if upfront costs are higher.
- Energy independence and resilience: For households that value stability, self-reliance or want backup during outages, batteries remain valuable — beyond just cost savings.
- Quality system components and longevity: A well-designed solar + battery system using high-quality equipment can deliver reliable performance over 15+ years, making the long-run value worthwhile even with reduced rebates.
- Better energy management: With smart use — e.g. shifting power consumption to daylight, EV charging, managing loads — homeowners can still realise strong savings on bills.
In other words: while timing matters, buying later doesn’t necessarily mean a bad decision — just that the math changes.
Should You Act Now? What to Consider Before Deciding
Here are key factors to weigh if you’re deciding whether to move before the rebate drop — or wait and invest later.
✅ When you should strongly consider acting now
- You already plan to install solar (or solar + battery) — and your home is ready (roof or site assessment done, installer lined up).
- You want to maximise net savings and shorten payback period.
- You aim to install a battery storage system — acting before 2026 drops ensures stronger upfront rebate and better value.
- You expect to stay in the home long-term, making long-run savings more impactful.
⚠️ When it may be acceptable to wait
- You’re still evaluating system size or energy usage — delaying may allow better planning, even if rebate drops.
- Your household usage is low or energy needs are modest — the difference in rebate might not drastically affect payback.
- You prioritise system quality, correct installation, and warranty over marginal rebate savings.
- You expect significant upgrades soon (e.g. adding EV charging, home renovation) — in such cases flexibility may matter more than rebate timing.
Important caveats
- To secure the higher rebate, your system must be installed and commissioned before 31 December 2025. Delays or backlog with installers may push the sign-off into 2026 — reducing rebate eligibility.
- Installer availability may become limited as demand for installations increases before the rebate reduction — scheduling early is advisable.
- The rebate phase-down is systematic and expected each year until SRES ends circa 2030 — so waiting further means even smaller rebates.
What Homeowners Should Do — Smart Steps to Take
If you’re considering solar or solar + battery now:
- Get quotes and book installation as soon as possible — to allow enough time for installation before the 31 December 2025 rebate cut-off.
- Review invoice details carefully — ensure the expected number of STCs (and rebate value) are clearly stated for transparency.
- SAA accredited installers and approved equipment — for compliance under SRES and correct STC eligibility.
- Consider future energy needs and battery storage — installing before the cut gives better rebates for batteries, which may improve long-term value if you expect rising electricity use or plan EV charging.
- Balance rebate value with long-term system quality and lifestyle needs — a cheaper system isn’t always the best option if it compromises performance or longevity.
Conclusion
The federal Small-scale Renewable Energy Scheme (SRES) marks a critical turning point for homeowners considering rooftop solar or battery storage. For many, the final months of 2025 represent a last chance to secure the highest available federal incentives, which directly affect upfront cost, payback timeline, and long-term savings.
If you’re ready — and especially if you plan to add battery storage — acting now can lock in significant benefits and make your solar investment more cost-effective. But for those prioritising careful planning, long-term quality, or modest energy needs, waiting remains an option — just with a clearer understanding that rebate value will decline over time.
At the end of the day, timing matters — but so does getting the right system for your home. If you’d like help assessing your potential savings, exploring system options, or scheduling a timely installation, the team at Amazing Solar is ready to assist.
