Selecting Meridian Energy was the key to Craig Investment Partners taking the top spot in the 2014 Broker Picks competition.
The power generator and retailer's instalment receipts returned 95.6 per cent in the year to December 12, the end date for the calculations.
Like other listed power firms, Meridian's shares rallied after National's win in the September 20 general election, which swept away the regulatory risks associated with opposition policies that aimed to make electricity cheaper for New Zealanders.
Craigs did not include Meridian in its 2015 picks, but did have Contact Energy in its mix.