National leader of the Fast 50 programme, Deloitte Partner Stephen Nicholas, said Earthwise had successfully changed its product range, first developed in 1964, from an “underground niche brand” to the commercial mainstream.
He said when companies grew larger the growth tended to slow.
Nicholas said this year has seen a return of smaller lean businesses to the index, driven by technology and sustainability.
There was a noticeable increase in businesses from Christchurch on the index, growing from two companies last year to eight in 2013.
To make the Fast 50 this year, companies had to achieve growth of 161 per cent, while growth of at least 463 per cent was required to make the top 10 on the index.
Top five
1. Earthwise Group2. GreenButton3. Intranel4. Griffbuild5. First In
Full results at www.fast50.co.nz