Auckland International Airport will spend more than $3 million over the next three years on projects to reduce energy use.
Through a programme launched today, the airport aims to save six gigawatt hours (GWh) of energy a year - enough to power about 750 homes a year and saving more than $2m a year.
It hopes to reduce carbon dioxide emissions by 1000 tonnes a year.
To achieve the targets, the airport will partner at least eight of its 90 tenants, including Air New Zealand, DHL, New Zealand Post, LSG Sky Chefs and Gate Gourmet.
Under an agreement supported by the Energy Efficiency and Conservation Authority (EECA), the airport will invest more than $3m in projects to measure and manage energy over three years.
In stage 1, an energy-monitoring system will be installed to identify energy use and potential savings in businesses across the airport precinct.
The airport will also have the energy efficiency of its office buildings independently verified and rated by office energy assessment scheme NABERSNZ.
EECA chief executive Mike Underhill said the project would provide the authority with information to help businesses reduce their energy use.
Airport chief executive Adrian Littlewood said the company was working towards creating an efficient and sustainable airport.
The airport has already set targets to reduce energy use, water use and waste to landfill by 20 per cent on a per-passenger basis by 2020.
It is a member of the Sustainable Business Council, which will use results to benefit other businesses.