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13.3kW Solar + 32.2kWh Battery in Graceville, Brisbane

A Graceville family installed a modern solar and battery system, now generating 93% of their household energy needs.

The Story

This Graceville household wanted more than just solar panels on the roof. They wanted genuine energy independence, with enough storage to power through the evening and overnight without relying on the grid.

Connect Energy designed a 13.3kW system with 32.2kWh of battery storage, matched to the home’s energy profile and roof orientation.

“Very happy with the Sales and Installation process. Brett, Grant and the team were very thorough. I was particularly impressed with the level of detail they took to hide any cabling. Thanks very much.”

Verified Google review

The Solution

Connect Energy installed a complete solar and battery solution for this Graceville home, selecting premium equipment suited to the site’s generation profile.

Solar Panels
28 x LONGi 475W
LONGi Hi-MO X10 475W
25yr product / 30yr performance warranty

Inverter
Sigenergy 15.0kW
SigenStor EC 15.0TP (Sigenergy)
10yr warranty

Battery
4 x Sigenergy 8kWh
32.2kWh total storage
10yr warranty

System Performance

The system generates 20,441 kWh per year, with the battery storing excess daytime generation for evening and overnight use. This covers 93% of the household’s annual energy consumption.

Monthly Generation (kWh/day)

71
Jan
62
Feb
58
Mar
49
Apr
37
May
37
Jun
42
Jul
51
Aug
62
Sep
63
Oct
69
Nov
72
Dec

Financial Impact

This system significantly reduces the household’s electricity costs, with savings that grow as energy prices rise.

$178,216+
Estimated Lifetime Bill Savings (20 years)
$15,200+
Government Rebates Applied

93%
Annual Generation vs Household Use

Government incentives applied to this project included Small-scale Technology Certificates (STCs) and the Queensland Cheaper Home Batteries Program, which together reduced the upfront cost by over $15,200.

Environmental Impact

16 tonnes
CO₂ reduced per year

3,158
Trees planted equivalent

356
Long-haul flights avoided

Frequently Asked Questions

How much can a 13kW solar system with battery save in Graceville, Brisbane?
A 13.3kW solar system with 32.2kWh battery in Graceville generates approximately 20,441 kWh per year, covering 93% of typical household energy usage. Homeowners can expect significant annual savings on their electricity bills.

What solar rebates are available in Brisbane?
Brisbane homeowners can access Small-scale Technology Certificates (STCs) and the Queensland Cheaper Home Batteries Program, which together can reduce upfront costs significantly on a system with battery storage. Connect Energy handles all rebate paperwork as part of the installation.

Can I add battery storage to my existing solar system?
Yes. Connect Energy frequently upgrades existing solar systems with modern battery storage. In many cases, adding a battery alongside a panel upgrade maximises your investment and allows you to store excess generation instead of exporting it at minimal feed-in rates.

Related Services

Interested in a similar setup for your own home or business? Explore our Solar Battery Storage and Solar Panel Installation service, or browse more Brisbane solar & battery case studies.

Connect Energy delivers comprehensive residential, commercial, and industrial solar solutions across Brisbane. From custom installation to ongoing maintenance, we empower communities with reliable, sustainable power.