More than 100 solar power and battery systems are being offered free by power giant Vector to individuals, families, community groups and schools in the Auckland region.
A competition titled Future of Energy, which launches today, will give free use of 100 Vector solar and battery systems to the public and community groups for 10 years. Another 30 systems will go to state and state-integrated schools.
Vector chief executive Simon Mackenzie said the combination of the batteries and solar panels would provide "thousands of hours" of free power to winners.
"Each winner will receive a world-leading system, incorporating 3kW Vector solar panels installed on their roof, plus a Telsa Powerwall home battery, free for them to use for the next 10 years," he said.
"The combination of Vector Solar panels and Telsa's Powerwall battery means you can store solar power during the day and cook your dinner with it at night."