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Learning hub

How to fix a high electricity bill after solar

Understanding and solving common issues that prevent solar savings

WattBot, WattMate's bill and tariff explainer — a WattForce brand character
Explained by WattBot, WattMate's bill and tariff explainer
About WattForce expertsAn illustrated WattMate expert persona — a brand character voicing our team's real WA solar experience, not a real person.
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Quick assessment
On WattMate's modelling, a 6.6 kW system on a typical Perth home takes about 51% off the annual electricity bill, worth roughly $1,325 a year. If yours hasn't moved much, one or more of the issues below is likely the cause.

Select an issue

Energy usage timing

Using electricity when solar isn't producing

Why this happens

Solar panels only generate during daylight. Use most of your power in the evening or early morning and you're buying it from the grid at full price, instead of using the solar you've already paid for.

Solutions

  • Shift high-energy activities to daylight hours
  • Use timers for pool pumps, dishwashers, and washing machines
  • Consider battery storage for evening usage
  • Install smart home automation to optimise timing
Impact level: High

This issue can significantly impact your solar savings and should be addressed immediately.

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How to fix a high electricity bill after solar | WattMate