Perth solar system planning

Solar Design for Perth homes and businesses

Solar Design is the process of matching solar panels, an inverter, battery storage and optional backup or EV charging to your electricity use, roof, shading, switchboard and future plans. Australis Solar models these factors before recommending a system, helping Perth property owners improve solar self-consumption, reduce grid reliance and avoid poorly matched equipment.

  • Perth-based and WA-owned
  • Operating since 2008
  • Accredited in-house installers

Example design assessment

Designed around the property

Site specific
Energy use Synergy bills and consumption patterns
Roof conditions Orientation, pitch, space and shading
Electrical scope Supply, switchboard and equipment locations
Future planning Battery, backup and EV charging options

A practical design before equipment is selected

Who our Solar Design service is for

Australis Solar designs systems for Perth properties where the right outcome depends on more than fitting the largest possible number of panels. The recommendation is developed around the customer, the building and the way energy is actually used.

Homes and new builds

For homeowners planning new solar, battery storage, future EV charging or a system that can support selected circuits during an outage.

Businesses and strata properties

For offices, warehouses, retail sites, community facilities and strata buildings seeking to offset daytime loads and improve long-term energy performance.

Existing solar system owners

For properties considering extra panels, a replacement inverter, battery storage, backup hardware, EV charging or a broader solar system upgrade.

Inputs that shape the recommendation

What our Solar Design assessment covers

System size alone does not determine whether a proposal is suitable. We assess when energy is used, where equipment can be installed, how the roof performs throughout the year and which technical constraints may affect the final configuration.

Electricity use

We review available Synergy bills, average daily consumption, seasonal changes and interval data where it is available.

Roof and panel layout

Roof dimensions, pitch, orientation, roof material, access, obstructions and compliant panel clearances influence the achievable layout.

Shade and production

Trees, neighbouring buildings, parapets, chimneys and other structures are considered when forecasting likely solar generation.

Electrical infrastructure

We consider the property supply, main switchboard, sub-boards, meter, inverter location, cable routes and potential upgrade requirements.

Tariffs and network settings

The design considers the applicable Synergy tariff, self-consumption, possible export settings and the relevant Western Power connection pathway.

Future energy needs

Batteries, EV charging, additional air conditioning, electric hot water, pool equipment and business growth can materially change the preferred design.

From first enquiry to a workable proposal

Our Solar Design process

The process is designed to identify practical constraints before installation and give you clear options to review rather than a single unexplained package.

Discuss your goals

We establish whether your priority is lower grid imports, improved daytime self-consumption, evening battery use, outage support, EV charging or future expansion.

Review energy information

Electricity bills and available interval data help identify consumption, seasonal variation, daytime loads and the energy that may need to be shifted into the evening.

Assess the property

We use available aerial imagery, plans, photographs and site information. A physical site assessment may be required where the roof, access, switchboard or electrical scope is complex.

Model the layout and generation

A 2D or 3D layout can be prepared to test panel positioning, roof utilisation, shading and expected energy production across the year.

Check technical compatibility

Panel strings, inverter inputs, battery compatibility, supply phase, equipment locations, cable routes, backup requirements and network settings are considered before the proposal is finalised.

Present and refine your options

You receive a clear proposal showing the recommended configuration, expected production, pricing, relevant assumptions and optional upgrades. The design can then be adjusted before acceptance.

Start with your electricity use and property details

Send us your enquiry, recent Synergy bill and any useful roof or switchboard photographs. We will confirm the next information required.

Book a System Assessment

Clear information before you decide

What you receive from the Solar Design

The proposal is intended to show how the system fits, what it is expected to produce and which assumptions affect the recommendation.

  • Proposed panel count, wattage and total solar capacity
  • Roof layout showing panel orientation and placement
  • Inverter type, capacity and relevant input configuration
  • Battery capacity and power rating where storage is included
  • Estimated annual and monthly solar production
  • Estimated energy offset and self-consumption outcomes
  • Shade considerations and material modelling assumptions
  • Backup inclusions and exclusions where requested
  • Final pricing, applicable incentives and proposal terms

Understand the forecast

Production and savings are modelled estimates

Forecasts are based on available property information, historical weather data, equipment characteristics, electricity use and the assumptions shown in the proposal. They are not a guarantee of future production, electricity prices, feed-in credits or savings.

Roof model Panel placement, pitch, orientation and usable space.
Shade model Material obstructions and their likely seasonal effect.
Energy model Forecast generation compared with available consumption data.
Financial model Indicative savings and payback based on stated tariff assumptions.
Actual results can vary because of weather, future shading, equipment operation, changes in electricity use, tariff changes, network curtailment and maintenance.

Plan the complete energy system

Solar Design can account for batteries, backup and EV charging

Not every property needs every component. The purpose of the design is to identify what provides practical value now and what should simply be prepared for later.

Solar panels

Panel size, quantity and orientation are selected to suit roof space, inverter requirements and the customer’s daytime and future energy demand.

Battery storage

Storage can shift excess solar into the evening, improve self-consumption and reduce grid imports. Capacity is matched to realistic charging and overnight use.

Blackout backup

Backup is optional and requires the correct hardware, such as a Sigenergy Gateway or Fronius GEN24 Plus with a Backup Controller. Supported loads depend on the system configuration, battery state and available power.

EV charging

Charger capacity, supply phase, cable routes, solar surplus charging and dynamic load management can be considered before an EV arrives.

System upgrades

Existing panels, inverters, meters and switchboards are reviewed to determine whether equipment can be retained, expanded or should be replaced.

Monitoring and maintenance

Consumption monitoring, performance visibility and ongoing service access help the owner understand how the completed system is operating.

Designed for the Perth electricity network

Solar Design for Western Australian connection requirements

A suitable roof layout still needs a compliant electrical and network design. Requirements can differ according to supply phase, inverter capacity, existing equipment, customer category and the proposed export configuration.

Western Power

The network connection pathway, aggregate inverter capacity, export controls and equipment settings must align with the requirements applying when the application is submitted.

Synergy

Tariffs, eligibility and buyback arrangements vary by customer and may change. The Distributed Energy Buyback Scheme is not available to every commercial customer.

Electrical compliance

Inverters, protection, switchboards, wiring and commissioning must meet applicable Western Australian electrical requirements and relevant standards, including AS/NZS 4777.2 where applicable.

From 1 May 2026, updated WA technical requirements apply to relevant new and upgraded household and small-business rooftop solar and battery systems up to 30 kVA. Approval, export capacity, rebates and buyback eligibility are not guaranteed and must be confirmed for the individual application.

Local design, installation and support

Why choose Australis Solar for Solar Design

Australis Solar is a Perth-based, Western Australian-owned solar company operating since 2008. We provide custom solar, battery storage, optional blackout backup, EV charging, maintenance and upgrade solutions for homes and businesses.

  • Systems designed around electricity use rather than generic packages
  • 2D or 3D roof layouts and shade-aware production modelling
  • Accredited solar designers and installers
  • Installation completed by in-house installers and licensed electricians
  • Residential, commercial, strata and upgrade experience
  • Battery, backup and EV planning where these options are relevant
  • Clear assumptions, options, exclusions and technical limitations
  • Ongoing monitoring, maintenance and system support

Solar Design questions

Frequently asked questions

These answers explain what the design process covers and where additional assessment may be required.

What does solar design include?

Solar design includes reviewing electricity use, roof space, orientation, shading, panel layout, inverter configuration, switchboard requirements, equipment locations, battery suitability, optional backup, EV charging and relevant network requirements.

What information do you need to prepare a solar design?

We generally need a recent Synergy bill, the property address, information about future electricity use and clear photographs of the meter, switchboard and preferred equipment locations. Interval data, building plans and roof drawings can improve the assessment where they are available.

Do you always need a site visit before quoting?

Not always. Many properties can be assessed initially using electricity bills, interval data, aerial imagery and clear photographs. A site visit may be required for complex roofs, commercial sites, switchboard uncertainty, access constraints or before finalising technical details.

How accurate are solar production and savings estimates?

Production and savings forecasts are estimates based on the available property information, historical weather data, system specifications, electricity use and stated tariff assumptions. Actual results can vary because of weather, shading, consumption changes, equipment operation, network settings and future electricity prices.

Does every solar battery provide blackout backup?

No. Backup is optional and requires compatible battery, inverter and switching hardware. Sigenergy whole-home backup requires the correct Gateway hardware. Fronius backup requires a compatible GEN24 Plus system and the correct Backup Controller configuration. The circuits and loads that can be supported depend on the final design.

Can the design prepare for a future battery or EV charger?

Yes. The design can consider hybrid inverter options, spare inverter inputs, equipment space, switchboard capacity, cable routes, energy monitoring and likely future electricity demand. Future compatibility still depends on the products and technical requirements available when the upgrade occurs.

Who handles network approval and electrical compliance?

Australis Solar can prepare and coordinate the relevant retailer and network applications for the agreed installation. Final approval remains subject to Synergy, Western Power and any other authority involved. Installation and commissioning are completed to the requirements applying to the approved system.

Start with the right design

Request a Solar Design tailored to your Perth property

Tell us about your electricity use, roof, existing equipment and future plans. Australis Solar will review the information and recommend the appropriate next step for your solar, battery, backup or EV charging project.

Residential and commercial enquiries Solar, battery, backup and EV options Perth metropolitan service

Unsure what information to provide? Call Australis Solar and we will explain what is needed.