Our goal with off-grid solar is simple:

to design systems that can realistically operate without a generator.

Not just in summer.
Not just when everything is new.
And not only for the current occupants.

To achieve this, we design conservatively, based on real energy use, worst-case winter conditions, redundancy, and long-term property value.

Common System Scenarios

To provide a clear starting point, we work from common household scenarios based on bedroom count, not minimum current usage.

We typically design reference systems for:

• 2-bedroom homes
• 3-bedroom homes
• 4-bedroom homes
• 5-bedroom homes

These are not fixed packages. They are design reference points that allow us to model realistic energy demand and ensure systems remain functional long term.

Design Principle 1: Realistic Energy Demand

Our baseline assumption is:

• 5 kWh per day for an empty house, plus
• 5 kWh per day for each person living in the home

For example:

• A 2-bedroom home is typically designed for 2 occupants plus one additional person
• Larger homes are designed with increasing potential occupancy in mind

This avoids under-sizing systems based on short-term living arrangements or unusually low usage.

Why We Design for Full Occupancy

Even if a home is currently occupied by fewer people, we design systems to support full, realistic occupancy.

Living arrangements change. Families grow. And many off-grid properties are eventually sold.

If you build a 3- or 4-bedroom home, the energy system should be capable of supporting a fully occupied household — not just the current occupants.

Under-sized systems are one of the main reasons off-grid homes end up relying on generators later.

Off-Grid Energy and Property Value

For off-grid properties, the energy system is not a secondary feature — it is core infrastructure.

When an off-grid property goes on the market, buyers pay close attention to:

• Power reliability
• Winter performance
• Generator dependence
• Ability to support a full household

A weak or generator-dependent system can reduce buyer confidence and, in many cases, property value.

A properly designed, generator-less off-grid solar system:

• Broadens the pool of potential buyers
• Reduces concerns during inspections
• Avoids costly upgrades before sale
• Protects long-term property value

This is why we design systems for the future owner, not just the current one.

Design Principle 2: Redundancy Through Dual Systems

Redundancy is critical for generator-less operation.

Where practical, we design systems with:

• Dual inverters
• Distributed battery banks

If a component fails, the system can continue operating while repairs are arranged.

While we always aim to resolve faults as quickly as possible, the reality of off-grid systems is that:

• Spare inverters and batteries are not always immediately available
• Replacement equipment can take time to source and deliver

Redundancy reduces the risk of being forced back onto a generator due to a single point of failure.

Design Principle 3: Winter Solar Performance

Winter is the true test of any off-grid system — and the most commonly underestimated.

We design on the assumption that:

• 1 kW of solar may only produce around 0.5 kWh per day in winter
• These conditions can occur for two consecutive days

By designing for worst-case winter production, systems remain stable and predictable, rather than marginal and generator-dependent.

Design Principle 4: Battery Autonomy

Battery storage is sized for approximately:

• 48 hours of autonomy

This allows the system to:

• Ride through consecutive low-production winter days
• Handle extended poor weather
• Maintain power without generator assistance

Battery autonomy is a key factor in achieving genuine off-grid independence.

The Outcome

By combining:

• Full-occupancy demand assumptions
• Redundancy at the inverter and battery level
• Conservative winter solar modelling
• 48-hour battery autonomy

We design systems that are theoretically capable of operating without a generator under normal Australian off-grid conditions.

That’s the benchmark we design to —
not minimum compliance,
not best-case weather,
and not short-term usage.