Which customers can buy electricity from iO Energy? Luke Morton 29 January 2022 05:45 Updated Currently, iO Energy's electrical plans are available to homes and small businesses in South Australia. Small businesses are defined as businesses that use <160,000 kWh (i.e. 160 MWh) per annum. Related articles Is iO Energy a licensed electricity retailer? Does iO Energy sell GreenPower? Comments 0 comments Please sign in to leave a comment.