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Homebattery sigenergy installation by Twilight Energy Adelaide South Australia

Home battery storage Adelaide, energy independence after dark

Energy independence,

without the bargain-bin shortcuts.

South Australia has the best battery economics in the country, and a once-in-a-decade federal rebate is on the table. We install premium batteries that will still be working in 2040.

100+ batteries installed

Authorised installer

Federal rebate applied

Why batteries now

Three reasons 2026 is the year to put one on the wall.

The federal rebate window is open.

The Cheaper Home Batteries Program is live: typically $4,000-$8,000 off a residential battery, depending on size. We apply it directly to your quote.

SA’s grid charges punish exports.

Feed-in tariffs are 3-6c/kWh and falling. Battery storage lets you use your own solar at the evening peak instead of selling it back for cents.

Premium batteries last twice as long.

A $9,000 bargain battery that dies in seven years isn’t cheaper than a $14,000 Sigenergy or Tesla that lasts fifteen. We install batteries you don’t replace.

What we install

Our go-to batteries. 
Different households.

Tesla Powerwall 3

The proven, simpler choice

13.5kWh usable · Integrated inverter · 10-year warranty

The Powerwall 3 is the solution some households opt for when seeking premium storage without the fuss. The solar inverter is built in, one less box on the wall, and Tesla's app is one of the most polished. At 13.5kWh it covers the evening peak for most Adelaide homes, and paired with the Tesla Gateway it'll carry your essentials (or your whole home, with the right set up by Twilight) straight through a blackout.

13.5kWh usable capacity per unit

Built-in solar inverter (saves another box on the wall)

Whole-home backup ready with the right gateway

Tesla app: clean, mature

10-year warranty

Sigenergy SigenStor  ·  Most flexible

The ecosystem play

Modular 5-48kWh · AI energy management · V2G-ready

If you have an EV (or are thinking about one), or want to grow the system over time, Sigenergy gives you one ecosystem managing solar, battery, EV charging and (when it lands) V2G.

Modular: start at 5kWh, stack to 48kWh

AI-driven smart energy management

EV charger integration via the mySigen app

V2G-ready hardware (when regulator approves)

10-year warranty

Both are excellent. Tesla is the simpler, proven choice. Sigenergy gives you more flexibility if you’re already thinking about EV charging or growing the system later.

Backup & resilience

What “backup” 
actually means 
when the grid drops.

There are three levels of battery backup. We’ll be honest about what your wiring, your switchboard and your budget can support.

Level 1

Essential circuits only

Fridge, lights, internet, a couple of power points. The simplest, cheapest backup configuration, good for most homes.

Level 2

Whole home, soft start

The battery powers everything but won’t start big loads (air-con, oven) at the same time. Tesla Powerwall 3 with the right gateway, or a properly sized Sigenergy.

Level 3

Whole home, no compromises

Run everything, including ducted aircon. Requires a larger battery, a beefier gateway, and a switchboard that’s up to the job. We’ll tell you upfront if your home suits this.

An honest note: a battery won’t run your whole house on solar alone indefinitely. Even a 24kWh battery is one cloudy day from empty. Backup is about getting through the blackout in comfort, not surviving the apocalypse.

Package Pricing

Sigenergy battery

Jinko panels

9.5kW

+ Sigenergy 16kWh

from

$17,000

Sigenergy battery

Jinko panels

13.3kW

+ Sigenergy 24kWh

from

$21,000

Tesla Powerwall 3

jinko panels

9.5kW

+ Tesla Powerwall 3 (13.5kWh, Tesla Gateway included) 

from

$18,500

GoodWe battery

jinko panels

9.5kW

+ GoodWe 16kWh

from

$15,000

Prices include GST and the STC discount, based on a single-storey Colorbond roof. Additional costs may apply for tiled roofs, multi-storey homes, three-phase properties, long cable runs, or installs more than 10m from the meter box. Contact us for a free, detailed quote.

MOST

POPULAR

Pricing & rebates

Federal rebate already deducted. SA incentives stacked on top.

The federal Cheaper Home Batteries Program runs from 1 July 2025. Rebate value depends on usable kWh, we calculate it for your specific system and deduct it from your quote.

If any SA-specific incentives apply (the SA Home Battery Scheme has wound down, we’ll tell you honestly if there’s anything left to claim), we’ll handle that paperwork too.

10kWh battery (entry)

[CONFIRM RANGE] 

13.5kWh Tesla Powerwall 3

[CONFIRM RANGE] 

15-24kWh Sigenergy

[CONFIRM RANGE] 

Federal rebate

✓ Applied

Backup gateway included

✓ Applied

Indicative ranges only. Final price set after free home assessment.

Process

Five steps. You sign once. We do the rest.

Free home assessment

Site visit, switchboard inspection, energy bill review, backup-circuit discussion. Usually 45 minutes on-site.

Custom quote

After the site visit, we lock in a fixed price: battery model, federal rebate already deducted, payment terms clearly set out. If we find anything unexpected (older switchboard, non-compliant wiring), we flag it before quoting.

Approvals & rebates

We handle the SAPN grid connection application and the rebate paperwork. You don’t lift a finger.

Install

One to two days on site. Done by our in-house SAA-accredited team. Switchboard tidy when we leave.

Switch on & monitor

System commissioned, app set up on your phone, blackout test run, walk-through of how to read your savings.

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Twilight Energy Home battery installation Cam and Lana
faqs

The questions we get most.

What customers say

5.0★ from verified Google reviews.

★★★★★

"Just had an 11.4kW solar array and a 24kWh battery installed by Twilight Energy and wow what a great service. They were very professional, communicating with us on the site inspection and install dates. Very flexible when we needed to reschedule."

JS

Jeff Sargent

Verified Google review · 11.4kW + 24kWh battery

Ready to

stop sending power back for cents?

Free home assessment, federal rebate calculated for your system, every component named on the page. No deposit, no pressure.

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