Going Off-Grid in WA: Modular Homes That Let You Live Further, Better

There’s a certain kind of freedom that comes with building beyond the edge of the grid. A home tucked into the bush outside Margaret River. A retreat overlooking golden fields in the Wheatbelt. A coastal escape where the loudest thing at night is the wind through the trees.

In Western Australia, off-grid living is becoming an increasingly intentional way to live.

For many design-led homeowners, it’s less about “going without” and more about creating a home that feels deeply connected to place. A home that operates independently, treads lightly on the landscape and gives you the flexibility to live where traditional construction often can’t.

And when it comes to building off-grid in WA, modular construction makes it possible.

Why Modular Homes Are Ideal for Off-Grid Living

A well-designed modular home is already built around efficiency and performance, which are essential qualities when your home is generating and managing its own resources.

Because PIQUE modular homes are constructed in a controlled factory environment, every detail is carefully considered before the home reaches your site. Insulation, glazing, sealing and orientation can all be designed to work together from day one, helping reduce energy demand and improve year-round comfort.

At PIQUE, our homes are engineered using Australian-made TRUECORE® steel framing, creating a strong, stable structure suited to WA’s diverse climates and remote locations. A tighter building envelope means less energy loss and ultimately, a more efficient off-grid system.

Modular construction also reduces many of the challenges associated with regional builds. Instead of coordinating trades on-site for months, your home arrives substantially complete, dramatically reducing time on site and improving cost certainty.

For remote or difficult-to-access locations, that matters.

Can You Really Live Off-Grid in WA?

Absolutely. In many cases, it’s the smarter financial decision.

Extending power infrastructure to rural blocks across WA can quickly become extremely expensive, with grid connection costs often ranging from around $30,000 to well over $200,000 depending on location and whether your block is in Western Power or Horizon Power territory.

When compared against a high-quality off-grid setup, many homeowners find the investment stacks up surprisingly well.

Western Australia’s climate also works in your favour. With plenty of sunshine, large landholdings and growing access to renewable technologies, WA is one of the most practical places in the country to build an off-grid home.

That said, true off-grid living requires thoughtful planning. Your home becomes its own ecosystem, generating power, collecting water and managing wastewater independently.

The key is designing the entire system holistically from the beginning.

Some of the biggest efficiency wins come long before the solar panels arrive. Thoughtful orientation, generous eaves, high-performance glazing and a heat-pump hot water system can dramatically reduce the energy and water your home needs in the first place, which means smaller, simpler, less expensive off-grid systems.

The Four Essential Off-Grid Systems

1. Power: Solar, Battery & Backup

Most off-grid homes in WA rely on a combination of solar panels, battery storage and a backup generator for extended cloudy periods, especially needed during winter.

System sizes vary depending on the home, lifestyle and location, but a typical setup may include:

• A solar array between 6kW–15kW
• Lithium battery storage (typically 15–30 kWh) for overnight and multi-day use
• An inverter and control system
• Backup diesel or LPG generation

For design-conscious homeowners, the goal is often seamless living – running air conditioning, appliances, lighting and home offices without compromise.

A quality off-grid energy system generally ranges from approximately $35,000–$70,000 installed, depending on usage requirements.

Making the Most of the Federal Battery Discount

Battery storage is one of the most significant investments in an off-grid home, and it’s now considerably more accessible. Through the Australian Government’s Cheaper Home Batteries Program, eligible battery systems between 5kWh and 100kWh attract a discount of around 30% on the upfront cost of installation, and off-grid homes qualify.

There’s no application to lodge. The discount is delivered through Small-scale Technology Certificates (STCs) and applied by your installer at the point of sale, so it appears simply as a reduction on your quote. Off-grid systems are also exempt from the virtual power plant (VPP) requirement that applies to grid-connected batteries.

Since 1 May 2026, the discount has been tiered by size. The first 14kWh of usable capacity receives the full rate, with support tapering between 14kWh and 28kWh, again from 28kWh to 50kWh, and no discount beyond 50kWh. The rate is set by your installation date and steps down every six months through to 2030, so it’s worth confirming the current figure when you plan your system.

Our view: design your battery around the way you want to live, not around the rebate. An off-grid home needs enough storage to carry you comfortably through a run of grey winter days, and the discount remains generous across the capacity most homes need. For the latest program details, visit the Department of Climate Change, Energy, the Environment and Water’s Cheaper Home Batteries Program page.

2. Water Storage & Filtration

Without access to scheme water, most off-grid homes rely on rainwater harvesting, often supplemented by a bore where conditions allow.

Water systems commonly include:

• Large-capacity rainwater tanks
• Pumps and pressure systems
• Filtration and UV purification
• Optional bore infrastructure

Rainfall varies dramatically across WA, so understanding your site’s climate and annual water yield is important early in the design process.

A coastal South West property functions very differently to a remote inland site and your water strategy needs to reflect that.

3. Wastewater Systems

Every off-grid property requires an approved on-site wastewater solution.

Depending on the site, soil conditions and local Shire requirements, this may include:

• Septic systems
• Aerobic Treatment Units (ATUs)
• Worm farm treatment systems

System selection is heavily influenced by local regulations, land size and environmental conditions, which is another reason why early planning is essential.

4. Connectivity

One of the biggest misconceptions about off-grid living is that it means being disconnected.

In reality, many off-grid homeowners work remotely, stream content and stay fully connected using services like Starlink or fixed wireless internet.

Today’s off-grid homes can feel every bit as refined and functional as their metropolitan counterparts, just with a far better outlook.

The Hidden Costs People Often Miss

The modular home itself is only part of the equation. Remote and regional sites often come with some other considerations that you’ll need to factor into your budget early.

These can include:

• Site clearing and access works
• Transport logistics for modular installation
• Bushfire Attack Level (BAL) requirements
• Shire approvals and compliance
• Ongoing maintenance for batteries and infrastructure

Access is a particularly important consideration for modular homes. Your site needs to accommodate heavy vehicle delivery and potentially crane installation, which can sometimes require upgrades to driveways or entry points.

BAL ratings can also significantly influence your material selections and overall build costs, particularly in heavily vegetated regional areas.

Thinking About Building Off-Grid in WA?

At PIQUE, we design architecturally driven modular homes for regional and lifestyle properties across Western Australia, including off-grid-ready homes for the South West, Wheatbelt, Mid West and beyond.

Whether you’re planning a coastal retreat, rural family home or weekend escape, our team can help you explore what’s possible for your site, budget and lifestyle.

You can also experience our homes in person at the PIQUE display village at 13 Boom Street in Gnangara.

Build differently. Live deliberately.

Contact us today.