''If you spread that demand growth over say 30 to 40 years it becomes incrementally a relatively small number. The country can cope comfortably with delivering new renewable generation to meet this potential demand growth,'' he said.
''It's not a massive opportunity for new generation perspective but it is an opportunity for demand growth. It is a great opportunity for the country to get carbon out of our system.''
Meridian is adding near new Nissan Leafs and new Hyundai IONIQs, which have a list price of just under $60,000, to its fleet. The Hyundais have a range of over 200km.
It expects to have between 16 and 20 EVs by around the middle of next year.
Barclay said it made financial sense for the company and would save about $2000 to $3000 on fuel per vehicle.
''For us it has been a journey of discovery. We have found that the business case stacked up,'' he said.
''I suspect it will become more and more apparent to other businesses that it does for them as well. And once the second hand options start to grow it will start to work for many individuals as well.''
The charging network was also expanding rapidly. Early last year there were eight fast chargers around he country and now there were 64.