A home battery stores the solar your panels generate while you're at work or asleep and releases it during the evening peak, when grid power costs the most — for a typical Sydney home that can lift self-consumption from around 30% to 70–90%. The single biggest decision isn't the brand: it's whether you need a DC-coupled hybrid system (best when installing solar and battery together) or an AC-coupled retrofit (best when adding storage to solar you already own).
Updated August 2026 for NSW residents. Rebate figures below are current as of August 2026 and step down on a set schedule — confirm current values before signing a contract.
Quick answer (TL;DR)
- Adding a battery turns low-value solar exports into high-value evening self-consumption.
- DC-coupled hybrid systems (Sigenergy, Goodwe, Fox ESS, Sungrow) suit new solar-plus-battery installs.
- AC-coupled retrofits suit adding storage to an existing, healthy solar inverter.
- Federal Cheaper Home Batteries Program discounts ~30% of installed battery cost via STCs.
- NSW PDRS adds ~$1,100–$1,500 upfront and stacks on top of the federal rebate.
In a DC-coupled system, the battery connects directly to the DC side of a hybrid inverter, before the power is converted to AC for use in your home. This is the more efficient architecture — power moves from panel to battery to home with fewer conversion losses — and it's generally the better choice when you're installing solar and a battery at the same time, or replacing an ageing inverter as part of a battery addition.
We install DC-coupled hybrid battery systems from Sigenergy, Goodwe, Fox ESS and Sungrow — a spread that lets us match the right capacity tier, physical footprint and inverter output to your home and switchboard, rather than offering one option regardless of fit.
An AC-coupled battery connects to your switchboard independently of your existing solar inverter. This makes it the natural choice for retrofitting battery storage onto solar you already have installed — you don't need to touch or replace your existing solar inverter, which keeps the project simpler. The trade-off is a small efficiency loss from the extra conversion path compared with a DC-coupled system, though for most households this is minor next to the benefit of having storage at all. For retrofits, we assess whether an AC-coupled configuration or a hybrid replacement genuinely suits your existing equipment and match it to the right unit from our confirmed range.
| Situation | Typically Suited To |
|---|---|
| Installing solar and battery together, new build or full system upgrade | DC-coupled hybrid — Sigenergy, Goodwe, Fox ESS, Sungrow |
| Already have solar, inverter is relatively new and performing well | AC-coupled retrofit configuration |
| Want maximum round-trip efficiency and are replacing an old inverter anyway | DC-coupled hybrid |
| Want to add storage with minimal disruption to existing solar | AC-coupled retrofit |
| Larger household load, multiple appliances, considering an EV | DC-coupled hybrid, higher-capacity tier (e.g. Sigenergy, Sungrow SBH) |
Our in-home assessment is where we confirm which architecture genuinely fits your existing equipment and goals — this is exactly the kind of decision that shouldn't be made from an online form.
Battery specifications on a data sheet rarely tell you how a system performs after two years of daily cycling in a Sydney roof cavity or garage. We favour Sigenergy, Goodwe and Fox ESS because we've installed enough of each to know how they behave in real homes — not just how they read in a brochure. Sigenergy and Goodwe hybrid systems pair inverter and battery as one engineered unit, simplifying installation and reducing points of failure; Fox ESS gives us a flexible, well-supported option across a range of system sizes. We also install Sungrow batteries where a project calls for it, and can source SolaX Power on request. Every recommendation we make is based on what we've physically installed, commissioned and monitored.
A typical Sydney household using 18–20kWh per day, with a 10–13.5kWh battery correctly sized to their evening usage, can shift the majority of their evening peak consumption onto stored solar rather than grid power. Combined with the current Federal Cheaper Home Batteries Program (roughly 30% off the installed cost via STCs — approximately $272/kWh for the first 14kWh, $163/kWh for 14–28kWh, and $41/kWh for 28–50kWh) and the stackable NSW PDRS incentive (up to $1,100–$1,500 upfront, no longer requiring existing solar from 1 July 2026), the effective cost of adding storage in 2026 is meaningfully lower than in previous years. Full detail is on our Rebates & Incentives page.
(Figures current as of August 2026 — these incentives step down on a set schedule; confirm current values before quoting.)
From 1 September 2026, businesses and strata properties also become eligible for the NSW PDRS battery incentive. If you're assessing storage for a commercial site, visit our Commercial Solar page.
Our preferred battery and hybrid storage brands are Sigenergy, Goodwe and Fox ESS, with Sungrow approved and SolaX Power available on request. We do not install unbranded imports.
Most NSW homeowners installing an eligible battery qualify for the NSW PDRS battery incentive, provided the installer is CEC-accredited and the battery is on the Clean Energy Council's approved products list. From 1 July 2026 you no longer need existing solar to qualify. Confirm current eligibility on the NSW Government energy pages before signing.
Yes. For an existing, healthy solar inverter, an AC-coupled retrofit is usually the simplest path. Use our Battery-Only Calculator to size it.
Try the Solar & Battery Calculator to see which battery fits your home, or call 0421 458 217.
