Electric aeroplanes are already in our skies, so when will they become the norm?

Multiple Australian companies are aiming to decarbonise aviation by retrofitting existing aircraft, manufacturing, or importing new planes.Small aircraft in regional areas are expected to pioneer the transition, with larger aircraft to transition first to sustainable fuels before going electric.

Experts say there is a range of energy sources outside of conventional jet fuels that can be used to power planes, and we are likely to see these aircraft flying commercially as soon as next year.Some countries have already committed to using electric aircraft on domestic routes. This could slash costs and emissions on some of Australia's busiest flight routes.

which are being used for private hire and pilot training with plans to expand to provide electric air taxi transport.The main sources of energy being considered for emissions-free aeroplanes include rechargeable batteries and hydrogen-electric propulsion systems. "The biggest challenge is that the application of this technology is new and novel and as such creates many unknowns," a CASA spokesperson said.

For Dovetail, Mr Doral said the biggest challenge would be to achieve CASA certification and to demonstrate that the different components were robust and safe enough to carry people."Both technologies to optimise the total system weight. But also … make the whole technology safe," Mr Doral said.Mr Ellis said the cost to consumers may not be apparent for some time, but both airlines and passengers would benefit in the long-term.

Mr Ellis said it was likely multiple operators would have fleets of electric planes of up to six seats before 2030. Boeing is investing in blended Sustainable Aviation Fuel which combines conventional jet fuel with fuel made from waste by-products.

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