Solar Battery Cost in 2025
The storage battery often plays the largest role in the final cost. This guide explains market prices for solar storage batteries in 2025, what drives those costs, and where
According to data from Solar Choice's installer network database, a fully installed 20kW system will cost roughly $15,000 – $22,000 as of August 2024. These figures include the up-front 'discount'/incentive available under the federal government's Renewable Energy Target for systems under 100kW in output capacity, as well as GST.
Solar battery prices are $6,000 to $13,000+ for the unit alone, depending on the capacity, type, and brand. A home solar battery storage system connects to solar panels to store energy and provide backup power in an outage. *Based on a 30% federal tax credit if installed by December 31, 2032. Get free estimates from solar panel installers near you.
These are discussed below: The 20kW solar system costs we have outlined above (around $15,000-$20,000 inc. GST in Sydney as of the end of 2023) is an estimate of the price for installs without significant extras for complications.
Commonly known as the solar or home battery rebate, this new incentive offers around 30% off the total cost of installing a battery in eligible homes and small businesses. Read our in-depth guide to the rebate conditions, battery prices and payback times.
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