Case studies

Winemakers Pernod Ricard are set to cut their natural gas bill by $21,000 a year thanks to a new hot-water boiler at the company's Auckland wine-bottling plant.

The $55,000 Northvale boiler is used to heat water for cleaning the equipment at the plant. It is almost 12% more efficient than the steam boiler it replaced, and it is expected to reduce the amount of natural gas the company uses by 479,000 kWh a year.

This case study features a solar water heating installation at Solscape, an eco retreat near Raglan. Hot water is what tourists expect from the moment they unpack their suitcase and Solscape are using the sun's rays to solve this.