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20.425kW Solar + 48.4kWh Battery in Brighton, Brisbane

A Brighton family installed a modern solar and battery system, now generating 317% of their household energy needs.

The Story

Rising electricity costs and unreliable grid supply prompted this Brighton family to invest in a complete solar and battery solution. Their goal was simple: generate their own power and store enough to cover the hours when the sun isn’t shining.

Connect Energy specified a 20.425kW array paired with 48.4kWh of Sigenergy battery storage, optimised for the home’s consumption pattern.

The Solution

Connect Energy installed a complete solar and battery solution for this Brighton 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
6 x Sigenergy 8kWh
48.4kWh total storage
10yr warranty

System Performance

The system generates 31,088 kWh per year, with the battery storing excess daytime generation for evening and overnight use. This covers 317% of the household’s annual energy consumption.

Monthly Generation (kWh/day)

111
Jan
96
Feb
87
Mar
72
Apr
54
May
53
Jun
61
Jul
76
Aug
95
Sep
95
Oct
108
Nov
114
Dec

Financial Impact

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

$126,711+
Estimated Lifetime Bill Savings (20 years)
$21,697+
Government Rebates Applied

317%
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 $21,697.

Environmental Impact

25 tonnes
CO₂ reduced per year

4,780
Trees planted equivalent

556
Long-haul flights avoided

Frequently Asked Questions

How much can a 20kW solar system with battery save in Brighton, Brisbane?
A 20.425kW solar system with 48.4kWh battery in Brighton generates approximately 31,088 kWh per year, covering 317% 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.