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One of the industry's key roles is to ensure at all times, supply meets demand in the most cost-effective way. Apart from isolated, large-scale industrial facilities, New Zealand's major demand locations (often known as load centers) are in the North Island, particularly Auckland. Demand is mainly influenced by seasonal factors. Extremes of temperature contribute to higher demand as heating and air conditioning units consume more power. Demand growth in New Zealand generally follows gross domestic product growth patterns. However, the small population and industrial base mean major facilities can significantly influence overall demand. The graph below charts New Zealand's average weekly demand. This graph is updated weekly, on Wednesday. Please click on the refresh button if the graph does not appear to be updating. Click on a filename below to download the daily demand file for that day. Note that you require an unzipping tool, such as WinZip or gzip to view these files. 29 July 2010       29 July 2010       28 July 2010       27 July 2010       26 July 2010       25 July 2010       24 July 2010       23 July 2010       23 July 2010       22 July 2010       21 July 2010       20 July 2010       20 July 2010       19 July 2010       19 July 2010       18 July 2010       18 July 2010       17 July 2010       17 July 2010       16 July 2010       16 July 2010       15 July 2010       14 July 2010       13 July 2010       13 July 2010       12 July 2010       11 July 2010       11 July 2010                   Click here to download current and previous daily demand files. For further information about demand, please contact managerP@nzx.com or call NZX on +64 4 473-5240.