MightyRiverPower advanced 1.9 percent to $2.63. Meridian Energy climbed 1 percent to $1.545. Trustpower, which is majority owned by Infratil, rose 0.6 percent to $7.17, while Infratil increased 0.7 percent to $2.84. Contact Energy gained 0.2 percent to $5.88.
"The electricity generators are in demand again," Williamson said. "They're viewed as defensive, which given the high volatility we're experiencing on the equity market at the moment investors are viewing that sector as a relatively safe haven offering good dividend income."
Property investors, which are also favoured for their reliable income, rose. Kiwi Property Income Trust gained 1.7 percent to $1.185. Precinct Properties New Zealand advanced 0.9 percent to $1.09. Property For Industry climbed 0.7 percent to $1.40. Goodman Property Trust rose 0.5 percent to $1.085. DNZ Property Fund increased 0.3 percent to $1.72.
Fletcher Building, New Zealand's largest listed company, climbed 1.4 percent to $8.69. Spark New Zealand, formerly Telecom Corp, rose 1.2 percent to $2.89.
Steel & Tube Holdings led the benchmark index higher, climbing 2.5 percent to $2.84.
Xero, the cloud-based accounting software firm, snapped six days of declines to advance1.4 percent to $17.75.
Genesis Energy fell 0.8 percent to $1.895. The state-controlled energy generator and retailer announced a $20 million annual maintenance contract with Transfield Worley Power Services, as it looks to cut costs by 10 percent.
Argosy Property, New Zealand's fourth-largest listed property investor by market capitalisation, fell 1 percent to $1.025 after it said the value of its portfolio rose by 2.1 percent to $1.22 billion in the six months ended Sept. 30, excluding properties up for sale, after a property review by Colliers International.