Sunnn

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Straight answers on solar, batteries and power prices.

The questions people ask us before they sign, answered properly. Every number is sourced, and anything illustrative is labelled as illustrative.

An installer kneeling on a row of rooftop solar panels on a sunny day

Rebates7 min read

The 2026 home battery rebate, explained

How the federal Cheaper Home Batteries Program works after the 1 May 2026 changes: the STC factor, the new 14 kWh and 28 kWh tiers, and what your battery actually gets.

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A brick home at dusk with solar panels on the roof and a wall-mounted battery beside the front door

Wholesale energy6 min read

Wholesale electricity plans, explained simply

What a wholesale electricity plan like Amber or Localvolts actually is, how a home battery can earn on one, and the honest downside before you switch.

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A couple at a kitchen bench looking over a system design on a tablet

Batteries6 min read

How big a home battery do you need?

A plain way to size a home battery in Australia: find your evening usage, check your solar can fill it, then weigh the rebate tiers and how you want to use it.

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A smiling couple in Sunnn caps standing on the lawn in front of a single-storey home with solar panels on the roof

Batteries9 min read

Is a home battery worth it in Australia? (2026)

An honest way to judge a home battery's payback for your own house: what it earns, what it costs after the rebate, what changes the answer, and who should wait.

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An older couple in Sunnn caps relaxing on the sunny patio of a modern home surrounded by garden

Batteries9 min read

Adding a battery to your existing solar

Already have solar? How to add a battery: keep your inverter (AC coupled) or swap to a hybrid (DC coupled), the rebate rules, and when to wait.

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A single-storey brick home at night with solar panels on the roof, warm lights on inside and a white Fox ESS battery on the side wall

Batteries8 min read

Will a solar battery work in a blackout?

Plain solar switches off in a blackout. A battery only keeps the lights on if it is set up for backup. Here is what that means and what to ask for.

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A brick home in golden evening light with solar panels on the roof and a white Fox ESS battery on the side wall

Wholesale energy9 min read

What is a virtual power plant (VPP)?

A plain guide to virtual power plants in Australia: how a VPP uses your home battery, how you get paid, what you give up, and how it compares with Amber.

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A single-storey brick home in full midday sun with solar panels on the roof and a white Fox ESS battery on the side wall

Solar9 min read

Why solar feed-in tariffs keep falling (and what to do)

Why solar feed-in tariffs keep dropping, what regulators say exports are worth in 2026-27, how the Solar Sharer Offer works and what to do about it.

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Shoppers walking through a Melbourne shopping arcade with a glass roof, a chequered tiled floor and small shopfronts on both sides

Solar9 min read

Solar and batteries for small business

Is solar worth it for a small business? How trading hours, demand charges, the 100 kW certificate line, the battery rebate and your lease change the answer.

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A single-storey brick home at sunrise with solar panels across the roof and a white Fox ESS battery on the front wall

Solar9 min read

Charging an EV with solar and a home battery

How much power an electric car really uses each day, when to charge it from solar, the grid or a home battery, and when more panels beat a bigger battery.

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Ready when you are

Get a battery designed for arbitrage. Switch to a wholesale plan when it’s on.

Drop your postcode for a fixed-price install quote, or call 1800 951 078.

60-second estimate · No phone required to see numbers · Federal battery rebate applied

Federal CHBP rebate · STC discount · Wholesale-ready battery design · 10-year workmanship