How can you use this calculator?

Enter your quarterly bill, day vs night usage and power price. In under 60 seconds we’ll estimate your ideal system size (kW), estimated production (kWh), bill reduction %, and the minimum battery size for blackout protection and getting rid of your night time usage — tuned to Townsville, Mackay & the Whitsundays unique weather conditions.

Bill Size
$1,200

Recommended Size

0.0 kW

Rule-of-thumb system size based on your bill and tariff. Final design still depends on roof layout, phases and other site details.

Estimated Solar Production

0.00 kW

Approximate average daily output in typical local conditions. Weather, shading and performance will change real results.

Estimated Bill Reduction

0.00%

Estimated bill reduction only. Your savings depend on how much solar you use during the day and your plan’s export rates.

Recommended Battery Size (Min)

0.00

Minimum battery size suggested to meaningfully cut evening grid use based on your bill and chosen solar system.

Your solar savings snapshot

Based on your current bill and system selection.

Estimated bill reduction
0.00%
Recommended battery size (min)
0.00 kWh

These figures are indicative only and will be confirmed in your detailed quote.

0%

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What your results mean...

  • Recommended Size (kW): The solar capacity that best fits your bill and usage split.

  • Estimated Solar Production: Based on North QLD sun hours and typical roof conditions.

  • Estimated Bill Reduction: % decrease on your current bill before export credits.

  • Recommended Battery Size (kWh): Minimum capacity to reduce night grid usage and provide blackout cover.