On 13 February, when freak winds brought down a transmission line in Victoria and shut down the state’s largest power station, a fleet of electric cars plugged into a charger in Canberra 500km away stirred. Within six seconds, 16 vehicles started discharging their batteries, sending power back into the grid. While the contribution – part of a pioneering research project – was minuscule compared with the 90,000 households who lost electricity, the experiment showed how EVs could help ease grid calamities of the future.