Battery storage · Hybrid & retrofit

Battery Storage

A battery sized to your evening load and wired to actually keep the lights on. We size to how much you really use after dark, fit a backup gateway when blackout protection matters, and show the payback with the current rebates as a line, not a headline.

In-brand illustration
What keeps the lights on

Backup needs a gateway, not just a battery.

When the grid drops, a solar or battery system shuts down for safety unless a backup gateway is wired in to island your essential circuits.

Grid outage
Solar only
Lights
Dark
Fridge
Off
Internet
Off
Anti-islanding shutdown
For line-worker safety the inverter disconnects. With no gateway, the whole house goes dark.
Scope

What this job includes.

  • Hybrid (new solar + battery) and retrofit (add to existing solar)
  • Backup gateway wiring for essential circuits or whole-home
  • Evening-load sizing from your metered usage
  • Federal and NSW rebates and VPP options, shown on the quote
  • Tesla Powerwall and other certified batteries, named and warranted
Our system: Backup and blackout protection are not the same thing, and we make the difference clear before you buy. The battery is sized to your evening load, the backup gateway and the circuits it covers are on the quote, and the rebate is a figure, not a promise.
Estimator

Size it for yourself, in three clicks.

A starting point using the same logic we use on site. Indicative only, not a quote.

Your average quarterly electricity bill

Indicative only. A real number comes from a site assessment with the load calc and switchboard check. This tool sizes a starting point, not a quote.

How we quote it

The same scope sheet, every time.

Whatever the job, your quote shows the load calc, the cable sizing and the compliance, so you can see exactly what you are paying for.

The scope and compliance sheet
  1. 1 Load calculation. Your actual demand worked out and shown, not a system size guessed off the roof.
  2. 2 Cable sizing + run length. Sized for the inverter or charger and the distance, not the cheapest roll on the van.
  3. 3 Switchboard assessment. Spare capacity, RCD and surge protection, fault level. Checked before anything is added.
  4. 4 System sized to your bill. Solar and battery sized to your usage and load profile, not to the headline rebate.
  5. 5 Make + model, named. The exact panel, inverter, battery or charger on the quote, not "good panels".
  6. 6 Warranties, itemised. Product, performance and workmanship listed separately with their years, so you can compare like for like.
  7. 7 Compliance paperwork. CES, Certificate of Compliance and as-builts named as deliverables, plus STCs handled and shown as a line.
If a quote does not show these lines, you cannot compare it, and you do not know what has been cut.
How it runs

What happens, step by step.

1

Site + load assessment

We measure the load, read the switchboard, check supply and phase, and look at roof or cable routes.

2

Design + scope sheet

You get the load calc, cable sizing, the named equipment and an itemised quote. The workings are on the page.

3

Contract + schedule

Fixed scope, STCs and rebates shown as a line, a start date that fits your trading or build program.

4

Install

Licensed install to AS/NZS 3000, staged around live sites and tenants where needed.

5

Test + certify

Every circuit tested, RCDs proven, Certificate of Compliance issued. Solar and battery commissioned and monitored.

6

Handover + docs

As-builts, test results, warranties, monitoring set up, and a walk-through of how it runs.

Licensed, covered, warranted

The paperwork behind the price.

EC-00000 (DEMO), CEC A0000000 (DEMO), Public liability to $20M, and a 10-year workmanship workmanship warranty. All in writing, all on the quote.

Marcus walks through exactly what is covered: the licence and CEC accreditation you can verify, the cover that protects your site, and the warranty that names its own exclusions instead of hiding them.

The licence, the cover, the warranty, and how to check each one.
Proof, recent work

Battery Storage jobs we’ve done.

Before
After
13.5kWh battery retrofit, Charlestown. 13.5kWh battery retrofitted to an existing 6.6kW solar system, modelled to a 7.5 year payback on the actual bill.
Before
After
10kW solar and 10kWh battery package, Port Stephens. 10kW solar paired with 10kWh storage on a holiday-let, sized to cover a 9kWh evening peak.
Questions, answered

Common Battery Storage questions.

What is the difference between backup and blackout protection? +
A battery on its own does not power your home in an outage. Blackout protection needs a backup gateway that isolates your home from the grid and switches the battery to run your circuits. We tell you which circuits stay live (essential or whole-home) and put the gateway on the quote, so "backup" actually means backup.
What is the payback now, with the rebates? +
Better than it was, and we model it on your bill. With the Federal battery discount and the NSW incentive, plus any VPP income, payback on a well-sized battery has come down. We show the numbers against your actual evening usage and tariff before you commit, because an oversized battery never pays back.
How big a battery do I need? +
It is set by your evening load, not the headline kWh. Most homes use the bulk of their power after the sun goes down, so we size the battery to cover that window. For an average home that is often in the 10 to 13.5kWh range, and the estimator on our pricing page gives you a starting point.
Can I add a battery to my existing solar? +
Usually yes, as a retrofit. We check your existing inverter and decide whether an AC-coupled battery or a hybrid inverter swap suits your system, then size and wire it. The compatibility check is the first thing we do, and the approach is on the quote.
Which loads stay on during an outage? +
Whatever you choose and the system can carry. Essential-circuit backup keeps lights, the fridge, power points and the internet going, which suits most homes. Whole-home backup needs a bigger system and usually three phase. We set the circuits with you and label them.
Is it worth joining a VPP? +
Sometimes, and it depends on the trade-off. A Virtual Power Plant pays you to let the retailer use some of your stored energy at peak times, which adds income but gives up some control. We explain the terms for the VPPs available on your battery so you can choose with the numbers in front of you.
Get started

Get a free quote with the load calc, the cable sizing and the compliance shown.

Tell us what you need. We book a site assessment and send a scope sheet you can actually read, not a one-number text.

✓ CEC Accredited✓ NSW Electrical Contractor✓ Licensed & insured to $20M✓ 214 five-star reviews✓ 10-year workmanship warranty
Get a free quote Call