Solar for new homes in Warragul and Drouin
Building a new home in Warragul or Drouin? Plan solar, a battery-ready inverter and the switchboard with your builder early, and keep the Solar Homes rebate.
If you are building a new home in Warragul or Drouin, plan the solar system with your builder during the design stage, not after handover. Early planning sets the roof layout, switchboard space and cable paths, and it keeps you on the right side of the Solar Homes rules for homes under construction. From 1 January 2027 every new Victorian home must also be built all-electric, which makes the solar and battery decision part of the build itself.
Why plan solar before the frame goes up?
A house plan decides a lot about solar before anyone climbs a ladder. Roof shape and pitch set how many panels fit on the north, east and west faces. The position of the meter box and switchboard decides where the inverter can go and how long the cable runs are. Ceiling and wall cavities are easy to run conduit through while the frame is open and far harder to reach once the plasterboard is on.
Getting this right at the plan stage costs little. Fixing it later can mean a second switchboard, an inverter mounted in an awkward spot, or panels split across poor roof faces because a skylight or a hip landed in the wrong place.
What does Solar Victoria require for homes under construction?
The Solar Homes solar panel rebate is open to owners of a home under construction as well as owner-occupiers, subject to the program’s income, property value and address rules. For a new build, Solar Victoria asks you to:
- Talk to your builder early, preferably during the planning phase.
- Agree on the solar system and get the builder’s consent to install during the build.
- Plan with the installer when they can get onto the site.
- Submit the rebate application at the right construction stage.
- Have the system installed within 270 days of approval.
Two traps catch new-home owners. Installing before your eligibility is approved means no rebate. And homes under construction are not eligible for the Solar Homes hot water rebate, although you may qualify once the build is complete. The full eligibility list and loan details are on the solar rebates guide.
How does the all-electric rule change a new build?
Solar Victoria states that from 1 January 2027 all new homes must be built all-electric. For most new homes in the Warragul area that means electric heating and cooling, an electric or heat pump hot water system, and an induction or electric cooktop instead of gas. Your daytime and evening load will be higher than in a gas-connected home of the same size, and solar sized for an older gas home will be too small.
Give the solar designer the full appliance list from your builder’s specification: the heat pump model, the hot water system, the cooktop and oven, any ducted system and whether you plan an electric vehicle charger. Sizing the system to that list is the main way to keep running costs down in an all-electric home.
Builder package or a separate solar retailer: how do they compare?
Many volume builders offer a solar package in their inclusions or upgrades list. You can also engage a solar retailer directly and have them install during the build, with the builder’s consent.
| Question | Builder package | Separate retailer |
|---|---|---|
| Panel and inverter brands | Often fixed by the builder’s supplier | Your choice from the retailer’s range |
| System size | Often a standard size for every plan | Sized to your appliance list and roof |
| Rebate handling | Ask whether the builder’s installer is a Solar Homes authorised retailer | Ask the same question of the retailer |
| Battery-ready inverter | May not be offered | Can be specified |
| Who answers warranty claims | Builder or its subcontractor | The retailer directly |
| Coordination with the build | Built into the schedule | Needs agreement on access and stage |
Compare the written specification, not the package name. Ask both for the panel and inverter models, the system size in kW, the inverter rating, the warranty terms, and whether the price is before or after the federal STC discount and any Solar Homes rebate.
Should a new home get a battery or a battery-ready inverter?
You do not have to buy a battery on day one, but it is worth deciding before the inverter is chosen. A hybrid inverter can charge a battery added later. A standard string inverter cannot, so adding a battery in a few years would need either a second inverter or a replacement. Energy Matters prices a battery-ready hybrid inverter upgrade on an existing 5 to 6.6 kW system at $2,500 to $4,500, which gives a sense of the cost avoided by choosing the right inverter at build time.
Also ask for:
- Space on the wall, away from bedrooms and living areas, for a future battery that meets AS/NZS 5139 clearances.
- Spare capacity in the switchboard for battery and backup circuits.
- Conduit run from the switchboard to the likely battery spot before the walls are lined.
If you are leaning towards a battery now, the home battery installation page covers sizing and the federal discount.
What does solar on a new home cost?
Installed prices for common system sizes in the Melbourne region, after the STC discount and including GST, from the Solar Choice Price Index:
- 6 kW system: $5,810 to $6,730 per system
- 10 kW system: $8,920 to $10,410 per system
An all-electric home with a heat pump and induction cooking often suits the larger end. New-build installs can run a little differently from retrofits because scaffolding may already be up and the roof is new, but the installer still has to fit around the builder’s program. Ask whether any return visit after handover is included.
What network and electrical approvals apply?
Your installer or retailer applies to AusNet, the distributor across this part of West Gippsland, for pre-approval before installing. AusNet sizes the connection on total inverter capacity and sets the export limit at the time of application, and new inverters must meet its emergency backstop requirements. Confirm your distributor on the builder’s electrical documents or your first power bill. The AusNet connection guide explains the limits.
On the electrical side, solar is prescribed work in Victoria, so an independent Licensed Electrical Inspector must inspect it and you should receive a Certificate of Electrical Safety. Both the designer and the installer need Solar Accreditation Australia accreditation, and every module and inverter used has to appear on the approved product lists kept by the Clean Energy Council.
What is the local picture in Drouin and Warragul?
Drouin has grown quickly since rezoning around 2010, adding several thousand residents between the last two censuses, with new estates north of the town centre. More on the town is on the Drouin area page. If your lot is in one of these newer estates, check the estate’s design guidelines for any rules on roof-mounted equipment before the solar layout is fixed.
Next step: send your build details
Gather your floor plan and roof plan, the builder’s electrical and appliance specification, your expected slab or frame date, your lot address and suburb, and whether you want a battery now or later. Say whether the builder has offered a solar package and attach its specification if so. Then start a new home solar enquiry and an independent local provider can review the plans, design the system and quote it separately from your builder.
Frequently asked questions
- When should I apply for the Solar Homes rebate on a house I am building?
Solar Victoria asks owners to talk to their builder early and submit the application at the right stage of construction. Once approved, the system must be installed within 270 days. Never install before your eligibility is approved, as that forfeits the rebate.
- Do I need my builder's permission to use my own solar installer?
Yes. Solar Victoria asks you to get your builder's consent to install solar during the build and to plan when the installer can access the site. Check your building contract for any clause about third-party trades on site before the handover.
- Will my new home in Drouin be able to connect gas?
Solar Victoria states that from 1 January 2027 all new Victorian homes must be built all-electric. Check with your builder how the rule applies to your contract dates, and plan heating, hot water and cooking as electric.
- Is it cheaper to add solar after the house is finished?
Not usually. During the build, cable runs and conduit go in while walls and ceilings are open, and the switchboard can be planned with space for solar and a future battery. After handover the installer has to work around finished linings, which can add time.
- Can my solar export everything it makes to the grid?
Not always. AusNet sets an export limit when the installer applies for pre-approval, and it depends on network capacity at the time. Your installer applies before installing and should tell you the approved limit in writing.