The relationship, which falls under Unison's renowned "Greatest Supporter" programme, is one of three junior sports associated with the company, with junior rugby and netball also benefiting from the partnership.
Junior hockey in Taupo is also part of the programme.
Unison relationship manager Danny Gough said the programme was an important channel for delivering electrical safety messages to children, while also supporting grassroots sport.
"We want to see our local children living healthy, active lives and, if we can educate them around electricity and being safe at the same time, the outcomes for both Unison and the sporting associations we're linked with have the potential to be extremely beneficial.
"We believe it's delivering great results for our community, and it's something we're really proud of.
"With the junior hockey season now officially under way, expect Unison's Hockey Stadium, a key partner of Hawke's Bay Hockey, to be awash with colours, including the orange and blue of the Unison branded bags, drink bottles and mouthguards provided to each player," he said.