NABERSNZ is a system for rating the energy efficiency of office buildings. It is an independent tool, backed by the New Zealand government. in May 2013, EECA Business, in collaboration with the New Zealand Green Building Council (NZGBC), launched a new scheme to measure and rate the energy performance of commercial buildings in New Zealand. The New Zealand scheme, NABERSNZ™, is based on the successful National Australian Built Environment Rating System (NABERS) and has been adapted for New Zealand conditions. NABERSNZ™ is a voluntary scheme that aims to assist owners and tenants to reduce energy use and costs, and reduce greenhouse emissions.