15 years of experience
Local to Newcastle
Face to face
$0 upfront
CEC Accredited
20-Year Warranty

Why Go Off-Grid

Stop Paying for Electricity You Could Generate Yourself

NSW electricity prices rose up to 9.7% in a single year, according to the Australian Energy Regulator. For homeowners and rural property owners tired of that trajectory, off-grid solar in Newcastle offers a direct alternative.

You generate your own power, store it in a battery bank, and stop relying on a grid that keeps getting more expensive.

Get a free estimate

Eliminate Electricity Bills

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Full Blackout Protection

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Skip Grid Connection Costs

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Increase Property Value

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Our Process

From Assessment to Installation in 5 Steps

Choosing off-grid solar for your Newcastle property doesn't need to be complicated.
Here's exactly how we manage it:
Step 1
Free Site Assessment
We review your property, usage patterns, and any existing electrical setup to size your system accurately.
Step 2
Custom System Design
We design a system around your actual load, not a generic template. Battery capacity, panel array, and backup generation are all specified to your needs.
Step 3
Quote & Approvals
You receive a clear, itemised quote with all rebates applied. We handle any required approvals and documentation.
Step 4
Installation Day
Our in-house team manages the full installation, including panels, batteries, inverter, switchboard, and generator integration where required.
Step 5
Inspection & Sign-Off
Every system is tested, signed off by a CEC-accredited installer, and set up with 10-year remote monitoring so you can track performance from day one.
Get a free estimate
Our Services

What we provide

Design-Supply-Install

We design, supply, and install off-grid solar systems, building solutions that are tailored to how each client actually lives and uses power, with their needs and long-term goals in mind.

Quality Guaranteed

We take pride in the quality of our work, which is why all our solar installations come with a 20-year warranty. To keep things running smoothly, we also include off-site monitoring so we can quickly identify and address any potential issues.

Payment Plans

We offer 0% interest-free finance through Brighte to make going solar more accessible. Get in touch for a free estimate and find out how quickly your energy savings could help cover the cost of your system.
Our Product Brands

High-Performance Solar Products for Off-grid System

All of our products are carefully selected for their proven track record of high performance and reliability in the Australian market.

SOLAR PANELS

Find out more

INVERTERS

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Batteries

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We only Install products that we trust to go the distance
System Sizing

Off-Grid Systems Designed for Your Property

No two off-grid properties are the same.
System size depends on your daily energy use, available roof or ground space, and whether you need backup generation.
Here's how we approach off-grid solar in Newcastle for each property type:
HOW IT'S BUILT
Standard Home
A 6–8kW system with 20–30kWh of battery storage covers the full daily demand of a typical Newcastle family home, including reverse-cycle AC, hot water, and kitchen appliances.
Quote this build → See all options
SPECIFICATION
Modelled for Newcastle's 4.7 peak sun hours and typical rural roof orientation. Battery sized for low-sun-day autonomy.
6–8 kW solar
Panel array
20–30 kWh battery
Storage capacity
20–30 kWh / day
Designed daily usage
$25–45k installed
After STC rebate
Unsure where you sit? We'll review your property and usage patterns and tell you what actually fits — including whether off-grid is the right call at all.
Included Items

What’s Included in Every System

Every Newcastle off-grid solar system we install uses Tier 1 components with proven track records in Australian conditions.
COMPONENT
WHAT IT DOES
BRANDS WE INSTALL
01
Solar Panels
Generate DC electricity from sunlight. 370–440W per panel, Tier 1 rated.
Jinko
LONGi
Risen
Tindo
02
Lithium Battery Bank
Store solar energy for night, overcast days, and peak demand. 80–95% usable capacity.
Sungrow
03
Inverter / charger
Generate DC electricity from sunlight. 370–440W per panel, Tier 1 rated.
Enphrase
Fronius
Sungrow
Solar Edge
04
Charge controller
Regulate voltage from panels to batteries. MPPT for maximum efficiency.
Sungrow
Victron
05
Backup Generator
Supplementary power during extended low-sun periods. Auto-start capability.
Sized to your system
COST + REBATES

Off-Grid Solar Cost in Newcastle

System cost depends on size, battery capacity, and site complexity.
Here's a practical guide to what off-grid solar costs in Newcastle after applicable rebates.
Small
Standard Home
Large Home
Shed / Cabin

Small System

A compact setup for sheds, cabins, or weekenders. Covers lighting, a small fridge, and basic devices without breaking the bank. Best suited for low daily loads and off-grid getaways.
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Solar
3-5 kW
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Battery
10-15 kW
+
Daily Usage
15-25 kWh
+
Est. Cost
$15K – $25K
Most Common

Standard Home

The right fit for the average household — enough capacity to run appliances, climate control, and EV trickle-charging through evenings and overcast days. Balanced cost against everyday performance.
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Solar
6-8 kW
+
Battery
20-30 kW
+
Daily Usage
20-30 kW
+
Est. Cost
$45K – $80K+
Farm / Estate

Large Home

High-capacity solar and battery for big households, farms, or properties with heavy electrical loads — workshops, pumps, multiple EVs, or extended grid independence. Built to carry serious daily demand.
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Solar
10-15 kW
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Battery
40–60 kWh
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Daily Usage
30–50+ kWh
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Est. Cost
$45K+
Program 01

Federal STC rebate (Zone 3)

$2,000–$4,000

Off-grid solar systems are eligible for the federal STC rebate, which reduces upfront costs by $2,000–$4,000+, depending on system size – applied at the point of sale, no paperwork required on your end.

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Explore the full details on our solar energy rebate NSW

Program 02

NSW Battery Rebate & VPP Incentive

Up to $1500

From July 2025, the federal Cheaper Home Batteries Program adds a further ~30% discount on eligible battery storage. As a CEC-accredited installer, every system we install qualifies for all available rebates.

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Full details on our NSW rebate solar battery page.

Program 03

Finance Options for Solar

0% Interest

Through our partnership with Brighte, eligible customers can access solar finance solutions from $0 upfront at 0% interest

In most cases, repayments sit below what you'd otherwise pay in electricity bills.

Solar Rebates are available for homeowners
Find out now
Why Us

Why Newcastle Property Owners Choose Sine Wave Solar for Off-Grid

From residential solar panels to commercial solar power, here's what matters when you're going off-grid, and how we make a difference:
01

CEC Accredited

Required for rebate eligibility and grid-compliant installation. Every system is installed to Australian Standards.
02

In-House Installation Team

We don't subcontract. Our own electricians design and install every off-grid system we quote.
03

15+ Years of Local Electrical Experienceal Presence

Newcastle off-grid solar systems are more complex than standard solar and battery installation. Experience in system design and fault-finding matters.
04

Full System Scope

We handle panels, batteries, inverters, switchboards, and generator integration. One team, one point of contact.
05

10-Year Monitoring

Remote system monitoring is included on every installation, giving you visibility over generation, storage, and consumption.
06

Honest Sizing

We'll tell you what you actually need. If a grid-connected system with battery storage is a better fit for your property, we'll say so. 
Service Areas

Service Areas for Off-Grid Solar Across Newcastle and the Hunter Region

We design and install off-grid solar systems across Newcastle and the wider Hunter region, including Lake Macquarie , Charlestown , Cardiff, Maitland, Hunter Valley, Cessnock, Raymond Terrace, and Warners Bay.

Not sure if we cover your location? Call us. If it's within reasonable reach, there's a good chance we can help.

Off-Grid Solar Newcastle: Frequently Asked Questions

How much does an off-grid solar system cost in Newcastle?
Systems start from around $15,000 for a small shed or cabin setup and range to $80,000+ for large homes or farms with high daily demand. Federal STC rebates and battery rebates reduce upfront costs meaningfully.
What size off-grid system do I need?
It depends on your daily energy use. A standard 3–4 bedroom home typically needs a 6–8kW solar array and 20–30kWh of battery storage. We size every system to your actual consumption data, not a rule of thumb.
How long do off-grid batteries last?
Lithium batteries we specify carry a 6,000–10,000 cycle warranty – equivalent to 15–25 years of daily use under normal operating conditions.
Can I run air conditioning off-grid?
Yes. Reverse cycle AC is one of the highest loads in an off-grid system, but it's very manageable with correct sizing. The Sine Wave Solar team will factor in your AC usage during the assessment stage.
Is off-grid solar worth it in Newcastle?
For rural properties facing grid connection costs of $30,000–$100,000+, off-grid solar almost always makes financial sense. For urban and suburban properties already connected to the grid, a hybrid solar and battery installation is usually the better option.
What government rebates apply?
The federal STC rebate and the Cheaper Home Batteries Program both apply to off-grid systems. Combined, they can reduce upfront costs by $3,500–$8,000+, depending on system size.
What happens if my system runs out of power?
A correctly sized system with a backup generator won't run out of power. The generator auto-starts during extended overcast periods, keeping your batteries topped up. We design systems with enough battery capacity and generator backup to handle Newcastle's worst winter stretches.
Do you install outside Newcastle?
Yes. We regularly install off-grid solar across the Hunter Valley, Cessnock, Maitland, and surrounding rural areas. Call us to discuss your location.

Get an Off-Grid Solar Assessment in Newcastle Today

Rising electricity prices, unreliable grid connections, and rural properties too far from the network… there are plenty of good reasons to go off-grid.

With Newcastle's 4.7 peak sun hours per day and federal rebates still available, an off-grid solar system in Newcastle delivers strong long-term returns for the right property.

The sooner you install, the sooner you stop paying for power you could be generating yourself.
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Call 1300 871 826
or get a quote
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