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M-co Electricity Price Index Today's Date: Saturday 31 July 2010 The M-co Electricity Price Index is a seven-day rolling-average regional electricity price. It is weighted by load for each of three regions and nationally. The Index Values are in NZ cents per kWh 30-Jul-2010 29-Jul-2010 Net Change % Change 1 Week Ago Upper North Island 7.7338 7.5860 Lower North Island 7.9888 7.7635 South Island 8.8474 8.5189 New Zealand 8.1729 7.9489