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36.1kW Solar + 48.4kWh Battery in Coopers Plains, Brisbane

This Coopers Plains property cut grid energy use by 70 percent and is on track to save over $384,063.

The Story

This Coopers Plains property cut their grid energy reliance by 70 percent. They were facing the end of life for their existing UPS system. Instead of just replacing old IT backup equipment, they invested in a 36.1kW solar and 48.4kWh battery setup. This makes them 79 percent energy independent.

The system generates 56,340 kWh annually under the Brisbane sun. We set the battery to always hold 40 percent in reserve. This covers their IT servers during any Energex outages. The remaining battery capacity powers the building overnight. It handles the heavy lifting when solar stops producing.

They claimed over $27,892 in government rebates upfront. The payback period sits at under three years. The system provides reliable backup power and an estimated lifetime saving of $384,063.

“Really happy we went with Connect Energy for this job. The boys were fast and did not disrupt our work at all. We are already saving about 70 percent on our energy bills.”

BF
Brett Fisher
Director, Connect Energy

The client needed to replace a failing UPS system. We designed a Sigenergy Sigenstor setup with a 36.1kW solar array and a 30kW Three Phase Hybrid Inverter. We included 48.4kWh of battery storage and a Three Phase Backup Gateway. The system reserves 40 percent of the battery for instantaneous backup supply. The remaining capacity reduces imported grid power overnight. Directing capital expenditure toward solar and batteries instead of a basic UPS delivers an excellent return on investment.

Installation Photos

The Solution

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

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

Inverter
Sigenergy 30.0kW
SigenStor EC 30.0TP (Sigenergy)
10yr warranty

Battery
6 x Sigenergy 8kWh
48.4kWh total storage
10yr warranty

System Performance

The system generates 56,340 kWh per year, with the battery storing excess daytime generation for evening and overnight use. This covers 79% of the household’s annual energy consumption.

Monthly Generation (kWh/day)

195
Jan
171
Feb
159
Mar
134
Apr
102
May
102
Jun
117
Jul
143
Aug
174
Sep
171
Oct
189
Nov
198
Dec

Financial Impact

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

$384,063+
Estimated Lifetime Bill Savings (20 years)
$27,892+
Government Rebates Applied

79%
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 $27,892.

Environmental Impact

45 tonnes
CO₂ reduced per year

8,663
Trees planted equivalent

1,000
Long-haul flights avoided

Frequently Asked Questions

Can a solar battery replace a UPS system?
Yes it can. Modern battery setups like the Sigenergy Sigenstor provide instantaneous backup power. We can reserve a set percentage of your battery capacity to keep essential servers running during Energex outages.

How much battery storage do I need for overnight power?
It depends on your overnight usage. A 48.4kWh battery can comfortably run heavy loads through the night. We look at your previous bills to size the system correctly for Brisbane conditions.

What solar rebates are available for Coopers Plains properties?
There are substantial government incentives available right now. This specific installation claimed over $27,892 in upfront rebates. We handle the paperwork to ensure you get the maximum possible discount.

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.