What changes for Australian solar in 2027?
Rooftop solar STCs: Under the federal Small-scale Renewable Energy Scheme (SRES), eligible solar photovoltaic systems can create Small-scale Technology Certificates (STCs), often assigned to a retailer or registered agent in return for an upfront discount. The published deeming period is four years for systems installed in 2027, compared with five years in 2026. The actual value depends on the system, installation location, certificate market and eligibility. Do not assume the same rebate amount shown in a 2026 quote will apply to a 2027 installation. Check the Clean Energy Regulator timetable.
Battery discount: The federal Cheaper Home Batteries Program applies to qualifying batteries connected to new or existing eligible solar systems. The scheduled STC factor is 5.7 from January–June 2027 and 5.2 from July–December 2027, with different support tiers according to usable battery capacity. These are certificate factors, not dollar rebates or guaranteed percentage discounts. Final entitlements depend on the installation and rules in force at the time. See the official program.
Other incentives: State and territory rebates, finance programs, electricity tariffs and network settings differ by location and can change. Check official program terms for your address before budgeting.
Understand how much electricity you use
Review 12 months of electricity bills, including seasonal air-conditioning or heating demand. Note daily kWh usage, time-of-use tariffs, existing feed-in tariffs and whether someone is home during daylight. Using solar power as you generate it often improves its financial value.
Check roof suitability, shade and future plans
Assess roof orientation, usable area, pitch, condition, shading from trees or neighbouring buildings, and any anticipated roof replacement. If you expect to add an EV, heat pump, electric hot water or battery, tell the designer now. A preliminary aerial rooftop model helps shortlist options, but does not replace a physical survey, structural checks or electrical design.
Choose system size for the household—not the headline
Compare estimated annual generation and expected self-consumption for several panel sizes. A larger array may produce more electricity but may not deliver the strongest financial return if exports are limited or paid at a low rate. Request assumptions for equipment, losses, shade and future consumption changes.
Ask about grid connection and export limits
Your distribution network service provider may impose inverter or export conditions, including export restrictions. Connection applications, possible switchboard upgrades and smart-meter configuration are part of the installation process. Confirm who handles approvals, estimated timing and any extra costs. Read the Australian Government connection guide.
Understand the full installed cost and incentives
Ask for a written itemised quotation showing panels, inverter, mounting, monitoring, installation labour, switchboard work, metering costs and the STC discount separately. The rebate is normally reflected as an upfront discount, not an automatic cash payment. Check any state eligibility conditions and avoid offers that guarantee a grant before assessing your circumstances. View STC calculations.
Decide whether a battery actually suits you
A battery can shift midday solar electricity into evening use, but extra hardware is not automatically the best financial choice. Compare the installed incremental battery cost, usable capacity, expected daily cycling, warranty, round-trip losses, electricity tariff and the forecast savings with and without storage. Check the requirements of the Cheaper Home Batteries Program before including an incentive in your budget.
Do not confuse battery storage with blackout protection
Not every battery can power your house during a grid outage. If backup matters, ask for written confirmation of supported backup circuits, usable emergency capacity, inverter output, transfer equipment and whether solar can recharge the battery during an outage. Air-conditioning and other large loads may require more power than a basic backup configuration supports. Read our related guide on Australian blackouts and battery backup.
Verify your installer and products
For federal SRES eligibility, use an appropriately Solar Accreditation Australia-accredited installer and confirm electrical licensing obligations in your jurisdiction. Check product eligibility where relevant, Australian warranties, after-sales support, workmanship coverage and the entity responsible for your contract. Accreditation of the installer is not the same as optional retailer approval under the New Energy Tech Consumer Code.
Compare quotes on the same assumptions
Seek multiple written quotes and compare solar capacity, estimated yearly output, inverter and panel brands, itemised discounts, proposed export assumptions, warranty terms and total price. Ask each provider to model the same household usage and energy tariff, then explain differences in forecasts rather than relying on the lowest headline price.
Know what happens after installation
Agree who obtains connection approval, arranges meter work, commissions the system and gives you monitoring access, certificates and manuals. Solar is not necessarily ready to switch on as soon as panels are fitted. See what happens on installation day.
2027 pre-installation checklist
- Gather a year of electricity bills and your current tariff
- Check roof condition, shade, usable area and any heritage or local requirements
- Compare multiple system sizes and solar-only versus solar-plus-battery
- Confirm distribution network export and connection conditions
- Verify SAA accreditation and relevant electrical licence
- Check STC eligibility and the date-dependent 2027 factors
- Obtain itemised written quotes, warranties and installation timelines
- Confirm whether battery blackout backup is included if needed
- Assign responsibility for meter configuration and post-install support
Frequently asked questions
Is the federal solar rebate ending in 2027?
No. The current SRES deeming schedule continues through 2030, with a four-year deeming period listed for qualifying rooftop solar installed in 2027. Its value reduces over time and eligibility conditions apply.
Will the 2027 battery discount be the same as 2026?
Not necessarily. Official program factors are scheduled to decline in January and July 2027. The discount also depends on usable battery capacity and rules applicable at installation.
Do I need council approval for rooftop solar?
Not always. Local planning and heritage rules differ, and electrical and network approvals may still be needed. Ask your installer to confirm the rules for your property.
Do I need a new smart meter?
Your meter may need replacement or reconfiguration before solar exports and billing work properly. Requirements and scheduling vary by electricity network and retailer.
Should I install a battery at the same time as solar?
It can be convenient, but compare the economics and future compatibility with a solar-only system first. Consider your evening demand, tariffs and backup needs.
Can EnergyBrain approve my rebate or installation?
No. EnergyBrain can help explore modelled rooftop solar potential. Formal eligibility, installation design, connection and pricing must be confirmed through official programs, the network and qualified professionals.
Start with your own rooftop
Before comparing proposals, explore your roof’s solar potential with Emily, powered by GreenSketch rooftop analysis. This preliminary model is not a site survey, government incentive approval, a guaranteed financial outcome or an installer quote.
Keep reading
Official Australian sources
- Australian Government — Solar PV and batteries
- Clean Energy Regulator — STC calculations and deeming periods
- DCCEEW — Cheaper Home Batteries Program and 2027 schedule
- DCCEEW — Battery eligibility
- Australian Government — Choosing a solar installer
- Australian Government — Grid connection
- Australian Government — Installation day and after
Last reviewed: 9 October 2026. This guide addresses rules and published schedules known at that date. Program terms, tariffs and installation requirements may change before or during 2027. Confirm current details with the relevant official authority and accredited installer.