Sylvia Wilson and her now late husband Rod wanted to prove a point when they decided to live off the grid and convert their property to solar power.

Within a few years, Ms Wilson had undertaken a 20,000-kilometre journey around Australia in her electric car with charging costs of $150.

The former farmer said her passion for looking after the environment and Rod’s interest in technology led them to pursue a more sustainable lifestyle at their property near Calliope in central Queensland.

They started by installing 32 solar panels, but after adding air conditioning and an electric car into the mix, they ended up needing 12 more.

“We’ve got 44 altogether now — except if there’s a long wet week, I’m fine,” Ms Wilson said.