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Free calculatorsA guide to get you started.
Three quick calculators for a rough feel on size, storage and rebates. They're a guide only — based on published assumptions, not your actual roof — so treat the numbers as a starting point for a conversation.
How much solar might I need?
A rough system size from your bill and roof space, with indicative generation, savings and payback.
Open calculator →How much battery might I need?
A starting point for usable capacity, based on how much power you use after dark.
Open calculator →What rebates might apply?
A ballpark on your STC discount and the federal battery rebate under the current tiers.
Open calculator →These calculators work from published industry assumptions. They cannot see your roof, your shading, your tariff or your meter, so treat every number as a rough starting point rather than an answer. Talk to us and we'll go through it properly and put the real figures in writing.
Prefer we just work it out for you?
Send us a recent bill and we'll do the full analysis — system size, rebate entitlement and payback — and put it in writing.