Case studies

Clive Scouring in Napier is capturing heat previously released as waste and turning it into energy savings worth more than $100,000 a year.

Clive Scouring captures energy from its chimney and uses it to pre-heat water for other processes at the plant.

The project has a one-year pay back and on top of the energy savings, the new system has also cut the company's annual CO2 emissions by 516 tonnes.

People power is Telecom’s greatest weapon in the battle for energy savings. A staff culture change and internal leadership is making the difference to their energy use. The Energy Manager works hard to get all staff on board via a number of different initiatives, including energy efficiency campaigns, the use of "Energy Rangers", energy audits and the use of different technologies to reduce energy use across this large corporate.

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.

Soil moisture metering is a good investment for farmers who want to stop over-irrigating and cut their energy costs, according to Lincoln University Dairy Farm manager Peter Hancox.

Installing a soil moisture metering system helped him avoid unnecessarily irrigating an 80-hectare block on at least 32 days during the 2008/2009 growing season-and cut his power bill by more than $2000.