Federal battery rebate is live: around 30% off your invoice. Already cut twice in 2026, next cut 1 January 2027. ≈30% federal rebate live · next cut 1 Jan 2027 See the step-down schedule
Battery brand · Sonnen

The Sonnen home battery

A premium German brand, known for a long warranty and one of the most established Virtual Power Plant programs in the industry.

Accredited installers Part of the Why Solar group, est. 2019 35+ years combined experience No spam, ever

German-engineered sonnenBatterie systems, known for their long warranty and history of building Virtual Power Plant programs around the battery.

Sonnen at a glance

Known forGerman-engineered sonnenBatterie systems, known for their long warranty and history of building Virtual Power Plant programs around the battery.
Typical capacityRoughly 9.5 kWh to 20 kWh per unit, with larger multi-unit systems available
Popular modelssonnenBatterie Evo, sonnenBatterie hybrid
RebatesFederal discount + your state incentive

Why people choose Sonnen

  • Long, well-regarded warranty by industry standards, often 15 years.
  • Strong Virtual Power Plant heritage, among the earliest brands to build a VPP program around its batteries.
  • German engineering and build quality, at a premium price point.
  • Eligible for the federal battery discount and most state incentives.
A modern wall-mounted home battery, the kind Sonnen makes, installed on an Australian home

Sonnen cost after rebates

The headline price matters less than the after-rebate price. The federal Cheaper Home Batteries discount takes roughly 30% off an eligible Sonnen battery, and your state incentive is separate, where one applies. For a full breakdown by size, see how much a solar battery costs, or get your number instantly with the savings calculator.

Is Sonnen the right brand for you?

There is no single best battery, only the best fit for your home. If you want to compare Sonnen against the other leading options, see how to choose the best solar battery. When you are ready, we match you with one accredited installer who fits the right brand to your needs.

How much does a Sonnen battery cost?
After the federal rebate, a Sonnen battery typically lands around $11,000 to $17,000 installed, reflecting its position at the premium end of the market. We confirm your exact after-rebate price by postcode.
Does Sonnen work with a VPP?
Yes, Sonnen batteries are commonly used in Virtual Power Plant programs, including offers built around Sonnen’s own systems. We flag the VPP options available in your area.
Does the Sonnen battery qualify for the rebate?
Eligible Sonnen batteries qualify for the federal Cheaper Home Batteries discount, and most states run a separate incentive too. We work out the federal discount and any state incentive as two real numbers, never merged.
Will you only quote me one brand?
We stay brand-neutral. We match you with one vetted installer who recommends the battery that genuinely fits your roof, usage and budget, whether that is this brand or another.
Free · No obligation

Get a Sonnen quote, with every rebate

Check your rebate by postcode and we will match you with one vetted installer. Free, no obligation, no spam.

Takes 2 minutes · 100% free · One vetted installer, never five
Beat the 4–9pm peak Free rebate check · one vetted installer