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EVS AND BATTERIES

Solar, battery and an EV: your own home energy loop

Renewable energy technologies are becoming common. Here’s what that set-up might look like for your home.

4 sections2 min readUpdated 19 Oct 2026
Electric car charging at a parking bay
Photo: Pexels
Day
Panels power the house directly
Midday
Surplus charges your EV
Night
Battery covers the evening and overnight
Short answer. Your panels power the house during the day. Excess solar charges your electric vehicle. Any remaining surplus is stored in a battery that can run your home in the evening and overnight.

What does a typical day look like?

Before solar, storage and other renewable technologies went mainstream, most homes drew all their energy from the grid. With more options available, households can now lean on the grid less.

Solar panels, a battery and an electric vehicle (EV) together can help a household achieve greater energy security:

  • Daytime: solar generation meets household loads directly.
  • Midday surplus: extra generation charges an EV, lowering or potentially eliminating almost all commuting costs.
  • Late afternoon: remaining excess energy is stored in a home battery.
  • Evening and overnight: the battery discharges to cover remaining demand.

Why does this loop work?

A solar-only home exports most of its midday surplus. But feed-in tariffs in Australia no longer pay what they once did.

Adding a battery and an electric vehicle gives that surplus somewhere valuable to go. You’re not just reducing your energy bill; you’re getting the most out of the energy you produce.

Do I need an EV?

Think of an EV as another way to use surplus power. Whether it makes sense depends on your household and personal circumstances.

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Frequently asked questions

Can I charge my EV with solar?

Yes. Surplus daytime solar can charge an EV, though this works best if the car is home during the day.

Does a battery help if I’m out all day?

Yes. A battery stores daytime solar for use after you’re home.

Keep reading

Sources

Editorial note (October 2026): figures in Emily’s assessments are estimates based on modelling of Australian rooftops and are not a guarantee of savings, returns or performance for any individual home. Actual results will vary by property. This article is general information, not personalised financial advice.