Question 1

What is an off-grid solar system?

Accepted Answer

An off-grid solar system runs a property with no connection to the electricity network at all. Solar panels generate power during the day, batteries store it for use at night and through cloudy stretches, and a backup generator tops the batteries up automatically when generation can’t keep up. A generator isn’t an optional extra bolted on for emergencies — it’s a planned, core part of every properly designed off-grid system, sized and installed alongside the solar and batteries from day one.

Question 2

What is a hybrid solar system?

Accepted Answer

A hybrid system keeps your grid connection but adds solar panels and a battery. During the day, solar runs the house and charges the battery; in the evening, or during a blackout, the battery takes over — so you’re drawing far less, sometimes almost nothing, from the grid. Grid as a safety net, your own power doing most of the work.

Question 3

Why do people install off-grid or hybrid solar?

Accepted Answer

The reasons cluster into a few groups. For a lot of rural clients it’s necessity — connecting a new block to the grid can run into tens of thousands of dollars, so solar isn’t a lifestyle choice, it’s the sensible way to power land that needs power anyway. For others it’s reliability — protection from blackouts caused by storms, bushfire risk or an ageing network. And for most people it comes down to bills: once the system’s paid off, there’s no ongoing power bill for most of the year.

Question 4

Will I run out of power in winter?

Accepted Answer

No, because we don’t design as though the sun will cooperate. No solar system in this country runs a house through July on sunlight alone, and anyone who tells you otherwise is selling. We size the battery against your real winter load, put a generator in as part of the design rather than as an afterthought, and tell you upfront roughly how often you’ll hear it run. Usually less than you’d think.

Question 5

What happens if we get a run of cloudy days?

Accepted Answer

The battery carries you, and the generator covers the rest. We size an off-grid array about 30% larger than the average day needs, so a run of grey days still puts something in. Behind it sits a battery sized at roughly three times the size of the array, and a generator that starts on its own when the battery needs it. You don’t stand at a window watching the weather and doing sums.

For a hybrid system, the grid carries you.

Question 6

Do I need a generator?

Accepted Answer

On an off-grid system, yes — and its real job isn’t the one people expect. A generator keeps the lights on, but what it’s actually there for is the battery: a battery that doesn’t get charged properly dies years before it should. That’s why we specify a remote-start generator that runs when the battery needs it, not when you notice the lights have gone. On a hybrid system you already have a generator. It’s the grid.

Question 7

How do you work out what size system I need?

Accepted Answer

It starts with how well the house itself is built — passive solar design, insulation, and how much the building “looks after itself” all affect how much load falls on the system, alongside your own comfort expectations and daily usage patterns. From there we size the solar array and battery bank to cover your worst week of the year, not just a sunny day. Because panels are relatively cheap compared to batteries, we deliberately oversupply generation capacity to counteract winter shortfalls, and orient panels northeast and northwest rather than true north — northeast catches winter sunrise, northwest catches winter sunset, extending the useful generation window through the shorter, lower-angle days of winter while still delivering strong summer generation.

Question 8

Can I add to the system later?

Accepted Answer

Yes, and we design for it — but it’s cheaper to do it in one go. We build the cabinet and the wiring with room in them, so adding panels or storage later doesn’t mean starting again. What we’d tell you honestly is that every return visit costs money, so if you know the shed, the pool or the EV is coming, it’s worth putting it in the load calculation now rather than in three years.

Question 9

How long does an installation take?

Accepted Answer

Most off-grid installs take 2-3 days on site, once the gear has arrived. The longer part is usually before that — the site assessment, the design, and the lead time on batteries and inverters. We’ll give you a projected instal date when we quote. Pay your deposit quickly and that date will be yours. Otherwise we’ll tell you if anything moves.

Question 10

Is off-grid cheaper than connecting to the grid?

Accepted Answer

Often, yes — and for properties any real distance from the existing line, it isn’t close. A grid connection for a rural property can run to tens of thousands of dollars once you factor in trenching, poles, network upgrades and connection fees — and that’s before a single bill arrives. Off-grid, most of the spending stops once the system’s installed. Pay once, not forever.

There’s no standard connection cost. It depends on distance, what’s in the way, and whether the existing lines can carry any more. Your distributor can quote the real number for your property — worth getting before you decide anything.

The honest caveat: if the grid already reaches your boundary, connecting is usually the cheaper option, and we’ll tell you that straight.

Question 11

How much does an off-grid system cost?

Accepted Answer

It depends on your load, and any installer who gives you a number before asking what you run is guessing. What drives the price is how much power you use, when you use it, and how much storage it takes to carry you through the worst week of your year — a two-person house with gas cooking and a five-bedroom house with an induction cooktop, hydronic heating and an EV are different jobs. We work out your load first, then price the system that meets it. Tell us about your place and we’ll give you a real figure.

Question 12

What size system do I need?

Accepted Answer

We work that out from your load profile, not from the size of your roof or your house. That means going through how and when you actually use power — what appliances, at what time of day, and what changes when family visit or the weather turns.

For off-grid, the arithmetic then follows: the array goes in about 30% larger than an average day needs, and the battery is sized at roughly three times the array.

For hybrid it’s different — the battery is sized to your average daily load, because a hybrid battery cycles far harder and a bigger one costs more than it ever returns. We’ll tell you if you’re being sold storage you don’t need.

Systems we’ve built range from a couple of kilowatts for one person up to setups running a family of five.

Question 13

Will an off-grid system run everything, or do I have to be careful?

Accepted Answer

At the size we build, you live normally — and the size is the reason. Some off-grid owners do think about when they run the dishwasher; others run an induction cooktop, ducted air and an EV without a second thought. The difference isn’t the technology, it’s whether the system was sized for the life you actually live. That’s the conversation we have before we design anything.

Question 14

Can an off-grid system run ducted air conditioning through summer and winter peaks?

Accepted Answer

Yes — provided the system is engineered for it from the outset. That means an inverter and battery bank sized for the high inrush current and sustained load of ducted heating and cooling, factored into the design alongside everything else the household runs.

Question 15

How many days of backup power do your systems provide in bad weather?

Accepted Answer

There’s no single “days of autonomy” figure that applies to every system — it depends on how the system is sized against the household’s actual usage. The real driver isn’t storage, it’s the balance between generation and consumption, which shifts hard with the seasons. In summer, a well-sited system might get 15–16 hours of usable sunlight and charge over roughly 8 hours of that, with generation comfortably outpacing use. In winter that ratio flips — batteries can be discharging for up to 16 hours a day against a much smaller generation window. That’s what the backup generator is there for: not as an emergency fallback, but as the planned tool that carries the household through the two or three months of the year when generation genuinely can’t keep up. As Garry Williams puts it: “If we get a good outcome, you’re not going to get a power bill for nine months of the year — and in winter, you will. That’s it.”

Question 16

Can I just install more batteries instead of having a generator?

Accepted Answer

No. No matter how large the battery bank is, more batteries can’t manufacture power that the solar array isn’t generating — it’s a generation-versus-consumption problem, not a storage problem. Batteries also need to stay within a healthy state-of-charge range for the cells to remain balanced long-term; running them hard at very low charge levels for extended periods isn’t a sustainable way to stretch stored summer power into winter. Every off-grid system we install builds in redundancy through a remote-start backup generator as a core, planned component — not an optional add-on.

Question 17

Should I supply my own generator, or use the one Empowered Offgrid provides?

Accepted Answer

We recommend the generator be supplied as part of the full system design. Customer-sourced generators have repeatedly caused problems on other jobs — the wrong generator type or phase, unreliable starting, or units too cheap to handle repeated overload trips reliably, which tends to make the trip protection progressively more sensitive over time. Supplying the whole system, generator included, means everything is matched and commissioned to work together properly.

Question 18

Can the point where the generator kicks in be adjusted after installation?

Accepted Answer

The battery discharge threshold — the point at which the system starts drawing on the generator — is set at installation based on your system design and expected usage. It can be changed later, but only with an on-site visit; there’s no remote adjustment. Setting it unrealistically low to squeeze more use out of the batteries tends to backfire, risking the power cutting out overnight with the batteries exhausted, so getting this balance right is part of the upfront design conversation.

Question 19

Do you service, repair or upgrade off-grid systems installed by other companies?

Accepted Answer

Yes. We regularly diagnose, service and upgrade off-grid and battery systems built by other installers — full health checks, inverter recalibration, battery testing, and system upgrades to bring underperforming systems back to where they should be.

Question 20

Can an off-grid system power a workshop, water pump or machinery, not just the house?

Accepted Answer

Yes — plenty of our systems run a home and a working property side by side: workshops, deep-well pumps, machinery sheds and heavier equipment included. It’s about sizing the array and battery bank to the actual combined load, not just the house — which is why household loads on our jobs can range anywhere from around 3kWh a night up to 100–200kWh a day.

Question 21

Can I charge an EV from an off-grid or hybrid solar system?

Accepted Answer

Yes. Once a system is running well, most off-grid and hybrid households have significant excess generation for a large part of the year, and a growing number of our clients now charge their EVs directly from that surplus at no ongoing fuel cost, rather than exporting it. It needs to be factored into the system design and load profile from the outset, or built in as room to expand later.

Question 22

Can an off-grid system be expanded later if I need more power?

Accepted Answer

Yes, and it’s common. Most of our systems are built with room to grow — extra panels, more battery capacity, a bigger inverter — so as your needs change the system can grow with you rather than needing to be replaced.

Question 23

Is off-grid solar actually cheaper than connecting to the grid?

Accepted Answer

Often, yes. Connecting a new rural property to the grid can run well into the tens of thousands of dollars in poles, trenching and connection fees, and you keep paying bills forever after that. For farm-style properties in particular, a fully engineered off-grid system can come in at roughly half the cost of a network extension in some cases. Once an off-grid system is paid off, there’s no ongoing power bill for most of the year.

Question 24

What's the difference between off-grid and hybrid?

Accepted Answer

Off-grid means you generate and store all your own power with no connection at all; hybrid means you keep the connection but stop depending on it. A hybrid system runs the house on your own solar and battery, uses the grid to cover the shortfall, and keeps the power on when the street goes dark. Off-grid suits properties the grid doesn’t reach affordably. Hybrid suits properties where the line is already there and the problem is reliability and cost, not access.

Question 25

Can I go fully off-grid later if I start hybrid?

Accepted Answer

Yes, if the system is designed with that in mind from the beginning. A hybrid system that backs up the whole house, rather than a few circuits, is the one that can become stand-alone later. Tell us at the design stage if going fully off-grid is a possibility and we’ll build the path in — retrofitting it afterwards costs considerably more.

Question 26

What actually stays on when the grid goes down?

Accepted Answer

That’s a design decision you make with us, and we tell you exactly which circuits before you sign. A hybrid system can back up essential circuits — lights, fridge, water, communications (and usually our recommendation)— or the whole house. Either way the changeover is automatic: nothing to switch, nothing to start. Most of our hybrid customers find out there was an outage when a neighbour mentions it.

Question 27

Will my hybrid system keep the power on during an AusGrid or Essential Energy blackout?

Accepted Answer

Yes, if it’s designed with smart-switching battery backup, which is how we build them. Standard grid-tied solar without a battery automatically shuts off in a blackout for safety reasons — a lot of people don’t realise this until the power actually goes out. A properly configured hybrid system isolates your home from the grid fault and keeps essentials running — fridge, lights, water pump, Wi-Fi — through the outage.

Question 28

How much can a hybrid system realistically save on power bills?

Accepted Answer

Empowered Offgrid’s own published figures put typical hybrid savings at up to 65c per kWh, since you’re using power you’ve already generated instead of buying grid power at 60–70c per kWh during peak periods. The exact outcome still depends on household usage and system size, so we’d rather talk you through a realistic estimate for your own home than quote a blanket percentage.

Question 29

Can I upgrade my hybrid system to a full off-grid system later?

Accepted Answer

In many cases, yes — it’s one of the advantages of starting hybrid. If off-grid might be the eventual goal, we can design the system’s cabling, inverter capacity and roof space with that expansion in mind, so a future upgrade doesn’t mean starting again from scratch.

Question 30

Does a hybrid system still work if the grid goes down for an extended period?

Accepted Answer

Yes, provided it’s sized with enough battery capacity and, where needed, generator backup — the same principles used for off-grid systems. The grid connection is simply an extra safety net, not something your day-to-day power depends on.

Question 31

Can I charge an EV for free using my hybrid solar system?

Accepted Answer

Yes — this is one of the fastest-growing reasons people add a hybrid system. Roughly every second hybrid system we install now includes an EV or car charger, using the same surplus-solar logic as off-grid: charge the car for free from power you’d otherwise be exporting. A common approach is keeping a larger 4WD or work vehicle for towing and long trips, and running a smaller EV or plug-in hybrid as the daily runaround, charged off the property’s own solar.

Question 32

Why do off-grid systems cost what they do?

Accepted Answer

You’re not just buying solar panels — you’re buying a self-contained power station sized to run your entire property reliably, every day of the year, including through a stretch of bad weather. That means a properly sized battery bank, an inverter built for continuous heavy loads, a backup generator, and design work to make sure nothing is undersized. It costs more upfront than a simple grid-tied system, but there’s no ongoing power bill for most of the year afterwards.

Question 33

Is there a rebate for off-grid solar and batteries?

Accepted Answer

Yes. Your panels and your battery each earn certificates under a federal scheme, and we apply their value as an upfront discount on your quote — you don’t do any paperwork.

Here’s how the discount actually works.

Question 34

Does the discount shrink over time?

Accepted Answer

Yes — it’s built to reduce every year for panels, until the scheme ends in 2030, and on its own faster schedule for batteries. The rate you get is set by the day the system is installed, not the day you enquire.

Question 35

Do I get the full rate on a big off-grid battery?

Accepted Answer

Not usually. And this is the part most installers leave for you to discover at quote stage.

The rate drops once a battery passes 14kWh and drops again past 28kWh — and most off-grid batteries are bigger than that. We’ll show you exactly where yours lands.

Question 36

What does an annual service involve?

Accepted Answer

We come back every year, check how the system has actually performed, and fix what needs fixing before it becomes an outage. That means looking at the real numbers rather than the ones in the brochure — what the panels produced, how hard the battery has worked, whether anything has underperformed. We also look at how your usage has changed, and what your future power needs might be, because households change.

Question 37

Do I have to do anything day to day?

Accepted Answer

No. A properly sized system runs itself, including starting the generator when it needs to. Most of our customers check the app occasionally out of interest rather than necessity. And we monitor all connected systems we’ve installed regularly.

Question 38

What happens if something fails in five years?

Accepted Answer

We come out.

We look after your system for as long as you own it. We recommend an annual service so that most failures get caught before you notice them. That way the power never goes out.

Panels, batteries and inverters each carry their own manufacturer’s warranty, and we handle those claims rather than handing you a phone number.

Question 39

What happens to the servicing if I sell the house?

Accepted Answer

We keep looking after the system, whoever’s living there. Every installation comes with 12 months of free servicing, and if you sell inside that first year the balance of it goes with the house.

After that there’s no contract to inherit — we simply get in touch each year and offer a maintenance check, and the new owner gets the same offer you did. We’d rather keep the system running well than lose track of it.

Question 40

How often should an off-grid battery system be professionally serviced?

Accepted Answer

We recommend annual servicing as a baseline — checking battery health, inverter performance, cabling and connections, and generator function, plus reviewing actual usage against what the system was designed for.

Question 41

What happens if I skip regular maintenance?

Accepted Answer

Nothing dramatic happens overnight, but small issues — a battery cell drifting out of balance, a connection loosening, a generator that hasn’t been test-run — tend to compound quietly until they show up as a real problem, usually at the worst possible time, like the middle of a bad-weather week. Annual servicing catches these early.

Question 42

What's covered under warranty, and for how long?

Accepted Answer

We offer a 12 month warranty on each installation. The main components (panels, inverters, batteries, generators) come with their own manufacturer warranty.

Question 43

Who actually installs the system?

Accepted Answer

We do — design, installation and servicing are all ours, not subcontracted to whoever is available that week. Empowered Offgrid is a licensed electrical contractor and is SAA-accredited specifically for stand-alone power systems, which is a separate accreditation from rooftop solar and a harder one to hold. The same standard applies whether we’re building a shed system or running a farm.

Question 44

How long have you been doing this?

Accepted Answer

Since 1991. Garry Williams started installing off-grid power with Australia’s first generation of solar panels, lived off-grid on his own property for twenty-three years testing every battery, regulator and inverter that came onto the market, and built what he learned into a design standard. That standard is how we design, install and service every system now.

Question 45

Why wouldn't I just use a suburban solar installer?

Accepted Answer

Because off-grid is a different discipline, held to different standards, and the failure mode is different.

If a rooftop solar system underperforms, your bill goes up. If an off-grid system underperforms, your house goes dark. Stand-alone power systems have their own Australian standards and their own accreditation, and sizing. One is a load-matching problem rather than a roof-area problem.

Question 46

What areas does Empowered Offgrid service?

Accepted Answer

We work from the Central Coast to the Greater Hunter and Lower Mid North Coast Regions, including Newcastle, Lake Macquarie, Port Stephens, Maitland, Cessnock, Singleton, Gloucester, Stroud, the Great Lakes, Manning Valley up to Port Macquarie.

Off-Grid & Hybrid Solar FAQs

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