A Christchurch maker of energy-saving lightbulbs is carrying out an initial public offering to list on the main board of the stock exchange.
Chris Mardon and Tom Mackenzie, who founded Energy Mad - which makes Ecobulb light bulbs - have been friends since they were at the University of Canterbury in the 1990s.
Mardon was one of New Zealand's leading young manufacturing executives before he co-founded Energy Mad. In 2002, he was awarded the New Zealand Institution of Professional Engineers young engineer of the year award. Mackenzie has a background in project management and has been involved in the implementation of energy-saving designs in large international buildings.
In 2004 Mackenzie came up with his brightest idea yet - if half of New Zealand households were to buy five energy-saving lightbulbs each, they could save enough electricity to power Christchurch for a year.
The pair talked to a few power companies before Line Trust South Canterbury signed with them and the first Ecobulb project started in October 2004.