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12.35kW Solar + 24.2kWh Battery in Sherwood, Brisbane

A new 12.35kW solar and battery setup in Sherwood delivers 105 percent energy independence and fast payback.

The Story

This Sherwood property now generates more power than it uses. We hit 105 percent energy independence on this job. The system produces 18,538 kWh every year. That covers the summer aircon and then some.

We installed a 12.35kW solar array paired with a massive 24.2kWh battery. The numbers stack up fast. The payback period sits under four years. We also secured over $8,217.50 in government rebates for the owner.

Energex bills are basically gone. Estimated lifetime savings for this household top $163,182. It is a massive result for a standard Brisbane residential block. Good gear installed properly just works.

The Solution

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

Solar Panels
26 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
3 x Sigenergy 8kWh
24.2kWh total storage
10yr warranty

System Performance

The system generates 18,538 kWh per year, with the battery storing excess daytime generation for evening and overnight use. This covers 105% of the household’s annual energy consumption.

Monthly Generation (kWh/day)

65
Jan
57
Feb
52
Mar
44
Apr
33
May
32
Jun
37
Jul
45
Aug
56
Sep
57
Oct
64
Nov
67
Dec

Financial Impact

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

$163,182+
Estimated Lifetime Bill Savings (20 years)
$8,217.50+
Government Rebates Applied

105%
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 $8,217.50.

Environmental Impact

15 tonnes
CO₂ reduced per year

2,864
Trees planted equivalent

333
Long-haul flights avoided

Frequently Asked Questions

How long does a solar and battery system take to pay for itself?
This Sherwood system has a payback period of under four years. Large batteries capture enough daytime solar to eliminate evening Energex grid usage.

What size battery do I need for a Brisbane home?
It depends on your evening power habits. We installed a huge 24.2kWh battery here to run heavy appliances and aircon all night.

Can I get government rebates for solar and batteries in Queensland?
Yes. We claimed over $8,217.50 in government rebates for this exact installation. We handle all the paperwork for you to make it easy.

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.