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6.65kW Solar + 24.2kWh Battery in Mount Gravatt East, Brisbane

A Mount Gravatt East family installed a 6.65kW solar and 24.2kWh battery system, now covering 484% of their energy needs.

The Story

Rising electricity costs prompted this Mount Gravatt East family to invest in a complete solar and battery solution.

Connect Energy specified a 6.65kW array paired with 24.2kWh of battery storage, optimised for the home’s consumption pattern.

“Professional, knowledgeable, helpful and excellent communication.i highly recommend Brett and the team. After sales service and answering questions I had was never a problem.”

Verified Google review

Installation Photos

Installer notes: Client is renovating his home and engaged us to remove his old small solar system and replace with awesome new panels, inverter, batts and gateway to bring his home energy up to modern age. We had lots of rain in recent weeks that prolonged the install but with perseverance got it done today, customer respected that we did not want to risk safety hazards and totally understood

“Client was very happy with the outcome and our detailed discussions on site, we are coming back to install a Sigen EV Charger in coming days as he decided he wanted one after talking through options with our staff onsite”

The Solution

Connect Energy installed a complete solarand battery solution for this Mount Gravatt East home, selecting premium equipment suited to the site’s generation profile.

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

Inverter
Sigenergy 10.0kW
SigenStor EC 10.0SP (Sigenergy)
10yr warranty

Battery
3 x Sigenergy 8kWh
24.2kWh total storage
10yr warranty

System Performance

The system generates 9,674 kWh per year, with the battery storing excess daytime generation for evening and overnight use. This covers 484% of the household’s annual energy consumption.

Monthly Generation (kWh/day)

34
Jan
30
Feb
27
Mar
23
Apr
17
May
16
Jun
19
Jul
23
Aug
29
Sep
30
Oct
33
Nov
35
Dec

Financial Impact

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

$38,928+
Estimated Lifetime Bill Savings (20 years)
$6,697.50+
Government Rebates Applied

484%
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 $6,697.50.

Environmental Impact

8 tonnes
CO₂ reduced per year

1,495
Trees planted equivalent

178
Long-haul flights avoided

Frequently Asked Questions

How much can a 6.65kW solar + 24.2kWh battery save in Mount Gravatt East?
A 6.65kW system with 24.2kWh battery in Mount Gravatt East generates approx. 9,674 kWh/year, covering 484% of annual energy use. Payback: under 13 years.

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 significantly reduce upfront costs. Connect Energy handles all rebate paperwork as part of the installation.

Can I add battery storage to my existing solar system?
Yes. Connect Energy regularly upgrades existing solar systems with modern battery storage, letting you 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.