One retailer has recorded a five-fold increase in sales over the past three years, and another said overseas trends show sales would continue to grow, well into the future.
A new study has revealed Dunedin is leading the way in electric vehicle ownership in New Zealand.
Research carried out by the University of Otago and Dunedin City Council shows the number of electric cars in Dunedin increased from 25 to 500 in the past four years.
It appears electric bicycle ownership is also increasing.
Cycle World Dunedin co-owner Matt Dunstan said there had been a "massive" increase in e-bike sales at his store this year.
"Three years ago, we were probably selling about one a week. Now, we are selling up to five a week.
"There was a period where sales were doubling each year."
He said that they had grown in popularity because they were practical.
"It's easier to get to work. You don't have to find parking. If there's a head wind, it's not so much of a struggle. Or if you live up a hill in Dunedin, you can enjoy biking to work and home again."
He said a lot of people also bought them for fun - such as mountain biking.
"I still get such a buzz from riding an electric mountain bike. I can go further in the amount of time that I can spend riding, or I can do more runs of one particular section of a track that I enjoy."
Dunedin Electric Bikes co-owner Nathan Parker said sales of electric bikes and scooters had doubled every year, since he opened the store four years ago.
It took him six months to sell one electric bike when he first opened. Now, he was selling one electric bike or scooter every three days.
He said the increased demand for electric scooters - particularly electric trikes - came mainly from people with disabilities, special needs or visual impairments, who were not permitted to drive cars.
"They don't want to ride a bike because they have to go on the road, which is too dangerous. But a scooter allows them to go on the footpath.
"All of a sudden, their ability to get around has increased."
Many of the other stores spoken to said they had one or two electric scooters for sale, but were not pursuing them because the city already had plenty of electric Lime Scooters available.
Electrify NZ Dunedin owner Mike Willis said sales of electric bikes had almost doubled at his store during the past two years, and he believed the trend would continue.
"If you look at the trends overseas, electric bike sales are now outstripping normal bike sales."
