The service will include easy-to-read monthly bills and access to a New Zealand-based call centre dedicated to serving Grey Power customers.
"We have enjoyed working with Grey Power to create this new service," said Pulse chief executive Gary Holden.
"After all, this country has been built on the back of the efforts of senior citizens and we hope to finally show them some of the benefits of deregulation."
Grey Power Electricity can be contacted at 0800 GREY POWER (0800 473 976) or by email at greypower@pulseenergy.co.nz.