About 60,000 Grey Power members will get up to 10 per cent off their power bills if they sign up to a new joint venture.
The lobby group, representing about a tenth of the 635,000 New Zealanders aged 65 and over, has done a deal with one of the country's smallest power retailers, Pulse Energy, which has 34,000 customers.
Pulse will supply electricity to Grey Power members at prices that chief executive Gary Holden said would be "somewhere between zero and 10 per cent better than the best offer on Powerswitch", the consumer website where consumers can compare what they would pay to different suppliers.
He said the company offered 210 different price plans in 27 regions with seven or eight metering types, so individuals would need to check the details for their own consumption patterns.