Selecting Battery Size for Solar System to Optimise Solar Energy Usage

1. Avoid Buyer’s Regret: How the Battery Size Can Make or Break Your Cheaper Home Battery Program’s Payback The new Cheaper Home Battery Program is creating a wave of excitement among Australian homeowners. But hereʼs the catch: picking the wrong battery size can turn a great opportunity into a costly mistake. Choosing the right battery size for your solar system is just as important as the rebate itself. With generous federal and state incentives now in play, the timing couldn't be better-but only if you size it smartly. CHEAPER HOME BATTERIES PROGRAM: A GAME CHANGER Launched in 2025, the Cheaper Home Battery Program offers eligible households, and small businesses may be eligible for around a 30% discount on the upfront cost of installing a small-scale solar battery. If you're also eligible for state-level programs, your savings could grow even further. Here's what the program covers: • Around 30% off the upfront cost of a solar battery system. • Applies to battery sizes from 5kWh to 100kWh. www.sunboost.com.au

2. • STCs are calculated based on usable capacity, capped at the first 50kWh. This means whether you're upgrading or buying your first system, a significant portion of the cost is already covered. Incorrectly sized battery storage would mean even the best rebate won't deliver the solar battery ROI you'd expect. WHY BATTERY SIZE MATTERS: TOO SMALL, TOO SOON Going small to save money might seem smart, but it could backfire. A battery size for solar system that's too small for your household needs will: • Run out of stored energy early • Force you to rely on expensive grid power overnight. • Deliver a longer payback period, as your savings donʼt match expectations. To avoid regret, itʼs important to consider your solar battery storage capacity to your householdʼs actual electricity habits—especially usage after the sun goes down. THE PROBLEM WITH OVERSIZING On the flip side, bigger isnʼt always better. Oversized batteries can be a trap: • If your solar panels canʼt fully charge the battery during the day, youʼd be wasting extra unused capacity. • Extra battery capacity means a higher upfront cost and slower return on investment. • You might qualify for the home battery rebate Australia offers, but youʼll still overpay for unused storage. Smart planning and system matching are key. HOW TO CHOOSE THE "JUST RIGHT" SIZE Thereʼs no one-size-fits-all answer. Instead, homeowners should: • Look at their electricity usage. • Check how much solar their current system produces on average. www.sunboost.com.au

3. • Consider future changes, like adding electric vehicles or home offices. In most Aussie homes, a battery size between 6kWh to 13kWh suits average evening usage. If youʼre unsure, the experts at Sunboost can analyse your energy habits and recommend the ideal size for maximum efficiency.tt TO KNOW MORE ABOUT AVOID BUYER’S REGRET: HOW THE BATTERY SIZE CAN MAKE OR BREAK YOUR CHEAPER HOME BATTERY PROGRAM’S PAYBACK CLICK HERE Call Sunboost today on 1300 786 266 info@sunboost.com.au Follow us on: www.sunboost.com.au