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Residential Install

20.425kW Solar + 32.2kWh Battery in Mount Ommaney, Brisbane

A Mount Ommaney family installed a modern solar and battery system, now generating 248% of their household energy needs.

The Story

For this Mount Ommaney home, the decision to go solar came down to long-term value. With energy prices only heading in one direction, they wanted a system sized to eliminate most of their electricity bill from day one.

Connect Energy delivered a 20.425kW solar system with 32.2kWh of integrated battery storage, designed to maximise self-consumption year round.

“Brett , Leonie and their team were a pleasure to work with. They were on site when planned and delivered our system without any delays. Everyone involved was available to answer any queries before and during the process.
Recommend this company to anyone wanting a Solar Installation
Alan Jones”

Verified Google review

The Solution

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

Solar Panels
43 x LONGi 475W
LONGi Hi-MO X6 MAX 475W
25yr product / 25yr performance warranty

Inverter
Sigenergy 20.0kW
SigenStor EC 20.0TP (Sigenergy)
10yr warranty

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

System Performance

The system generates 33,063 kWh per year, with the battery storing excess daytime generation for evening and overnight use. This covers 248% of the household’s annual energy consumption.

Monthly Generation (kWh/day)

99
Jan
99
Feb
99
Mar
78
Apr
78
May
78
Jun
82
Jul
82
Aug
82
Sep
103
Oct
103
Nov
103
Dec

Financial Impact

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

$129,291+
Estimated Lifetime Bill Savings (20 years)
$6,253+
Government Rebates Applied

248%
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 $6,253.

Environmental Impact

26 tonnes
CO₂ reduced per year

5,084
Trees planted equivalent

578
Long-haul flights avoided

Frequently Asked Questions

How much can a 20kW solar system with battery save in Mount Ommaney, Brisbane?
A 20.425kW solar system with 32.2kWh battery in Mount Ommaney generates approximately 33,063 kWh per year, covering 248% 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, or ask about Custom System Design for larger systems 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.