Expanding Solar and Adding Battery Storage in Daisy Hill

The challenge

This homeowner in Daisy Hill already had solar panels on the roof, but rising power bills told a familiar story. The existing system generated power during the day, yet most of that power went straight back to the grid for a feed in tariff that barely made a dent in the bill. Evenings and early mornings, when the household actually needed electricity, still meant drawing from the grid at full price.

The homeowner wanted to get more out of the roof space already available and start storing that extra solar instead of exporting it for next to nothing. There was also a practical concern that comes up often across Queensland and New South Wales: finding an installer who could add to an existing system properly, rather than treating it as an entirely new job, and who could explain in plain terms whether a battery was actually worth the money.

The Rethink Green Energy Solution

After assessing the existing array and the roof structure, the team recommended 14 additional Jinko Solar panels, each rated at 475 watts, installed on the northern side of the roof to work alongside the existing system. This gave the property a combined system large enough to justify a serious battery, without paying for capacity the household would never use.

A GoodWe 9.999kW hybrid inverter was chosen to manage the increased solar output and run the battery at the same time. For storage, the team installed a GoodWe lithium battery system in the garage, giving the home more than 21kWh of usable capacity. The battery was set up to be VPP capable, so the homeowner has the option to join a virtual power plant program later if it makes financial sense.

Installation and Project Delivery

The additional panels, inverter and battery were installed and commissioned by a CEC accredited installer and a licensed electrician. On the day, the team tested the full system, checked the switchboard and existing wiring, and confirmed the installation met current AS/NZS standards for both the solar and battery components.

An electrical safety certificate was issued two days after installation, confirming the system was tested and compliant. The team also managed the Small scale Technology Certificate paperwork on the homeowner's behalf, so there was no separate process left for the homeowner to chase up.

Why This Project Matters

Situations like this one are common across Queensland and New South Wales right now. A lot of homes already have solar, but the system was sized for a household's needs several years ago, before power prices climbed and before batteries became a realistic option for most families. Expanding an existing system and adding storage lets a household keep more of the power it already generates, instead of handing it back to the grid for very little in return.

With government battery incentives reducing in value over time, timing matters. Homeowners who wait risk paying more for the same outcome later, while still paying full price for grid electricity in the meantime.

Why Choose Rethink Green Energy?

Every system Rethink Green Energy designs starts with the property and the household's actual usage, not a standard package. This project reflects the approach the business takes on every job:
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• A 25 year workmanship warranty backing the installation
• CEC accredited installers and licensed electricians on every job
• A local, family owned team based in Queensland, servicing QLD and NSW
• Honest advice on system sizing, with no pressure to buy more than needed
• Ongoing support after installation, including system monitoring and maintenance

Get a Free Assessment

Households in a similar position, with an existing solar system that no longer covers their needs, can book a free, no obligation assessment with Rethink Green Energy. The team will look at the current setup, the roof, and the household's usage, then recommend what actually makes sense, whether that is additional panels, a battery, or both. Book a free solar and battery assessment today.