6.65 kW Solar and a 9 kWh Sigenergy Battery in Mullumbimby: Case Study

6.65 kW of Trina solar and a 9 kWh Sigenergy battery with a Sigenergy Gateway for home battery backup, for a Mullumbimby home.

Our own in-house electricians designed and installed the whole system: the panels, the hybrid inverter, the battery and the Gateway that keeps the home running in a blackout.

See if you qualify · Call 0483 903 020

★★★★★ Rated 5.0 from 49 Google reviews · read them on Google · read them on our reviews page

“Very happy with the completed solar system installation of battery, inverter, panels, gateway, thanking all the team, Zemmy, Harry, Alex, Samantha and Dean who led the team, top communication. Mullumbimby based. Recommended.”
Ronald B., Mullumbimby · Google review

The job

A new solar system and battery installed together on a Mullumbimby home. Designing the panels, inverter, battery and backup as one system meant it all worked together from day one, and the household can see everything in the Sigenergy app.

What we installed

• Solar: 6.65 kW of Trina panels on a metal roof, in two rows
• Battery: a Sigenergy SigenStor with about 9 kWh of storage (9.04 kWh in the design), standing on the floor between two protective bollards
• Home battery backup: a Sigenergy Gateway fitted on an outside wall, which gives full emergency backup and switches the home over automatically when the grid drops out
• Smart load control: a Shelly smart load controller linked to the Sigenergy system, so high-load appliances can run on surplus solar
• Monitoring: consumption monitoring and app training, so the household can see what the system is doing

How it went

Before install day we did a face-to-face site visit to agree the battery position, check the switchboard and confirm which circuits stay on in a blackout. Circuits on the backup supply need Type A RCBO protection to meet the federal battery rebate rules, so we check that on the visit and there are no surprises on the day.

The battery is protected by bollards and carries the required restricted-access and battery safety signage. The install was done by our own electricians with no subcontractors, followed by grid connection and a sign-off call.

How every job like this runs

1. Free energy assessment from one or two recent power bills, or a 15-minute call.

2. Custom design sized from the household’s real usage, with the federal Cheaper Home Batteries rebate and solar STCs taken off at point of sale. We handle the paperwork. See your rebates or try the battery rebate calculator.

3. Face-to-face site visit before install day: compliant battery position, switchboard and RCBO check, and agreement on what stays on in a blackout. No surprises on the day.

4. Install, usually one day, by our own electricians. No subcontractors. Then monitoring set-up, grid connection and a sign-off call.

Warranties

10-year battery, 10-year inverter replacement, 25-year panel performance and our 25-year workmanship warranty on our installation work. Equipment is covered by the manufacturer warranties.

The federal battery rebate steps down on 1 January 2027 and again on 1 July 2027, based on install date. If a battery is on your list, it’s worth getting your assessment done early.

Thinking about solar and a battery in Mullumbimby?

We’re based in Mullumbimby and install across the Northern Rivers. See our Mullumbimby solar and battery installers page, compare Sigenergy, GoodWe and Sungrow, Solax and Tesla, or see adding a battery to existing solar.

Get a free energy assessment · Book a 15-minute call · 0483 903 020

Find us on Google Maps to read our reviews, or follow our installs on Facebook and Instagram.

More from Sun Connect Solar: your rebates; battery rebate calculator; customer reviews; FAQ; recent installs: Solar and a 24 kWh Sigenergy battery, Mullumbimby area · 24 kWh Sigenergy battery added to existing solar, Lismore · all recent installs.