Case studies

Setting and implementing an energy management policy has helped ANZ National Bank achieve significant energy savings.

Part of their energy management programme, evaluated the lighting used in their premises. Installing more efficient lighting tubes has created a direct energy saving worth around $50,000 a year. Further savings were achieved in electrical maintenance, where costs have dropped from $150,000 a year to around $10,000.

During the design phase of Waitakere Hospital a design audit was undertaken to ensure that the new facilities were low-energy environments. Adjustments were made to the design so that the buildings made the most of natural ventilation, insulation and natural lighting levels were increased as well as the use of other energy efficient technologies.

Vivien Edge and Ken Ross put a lot of thought and research into the design of their new home in rural Upper Moutere three years ago. They wanted a home that had minimal impact on the global environment, was comfortable to live in, and that also made sense financially.

This case study describes how Vivien and Ken:

Compact fluorescent lamps in sizes up to 180 watts can replace mercury vapour and metal halide lamps up to 400 watts - using less power, producing less heat and switching on instantly.