New Zealand uses mainly renewable energy sources and most of New Zealand's electricity is produced from hydroelectric power stations and the rest is generated both by geothermal, wind and thermal energy. Electricity demand has increased by an average of 2.1 percent per year since 1974 and by 0.6 percent between 2005 and 2011. New Zealand has been considered one of the least energy efficient countries by in economic production compared to electricity consumption, although it is slightly above the world average in the list of countries by energy intensity. The National Grid, owned and operated by Trans Power New Zealand, is the high voltage transmission network of lines and substations connecting generating areas to towns and cities across the country. Existing Trans Energy assets include more than 11,000 kilometers of transmission route. lines, i.e. approximately 25,000 pylons and 16,000 poles, 174 substations as well as approximately 2,300 circuit breakers and 1,000 power transformers. The majority of New Zealand's electricity is generated from hydroelectric stations established on the rivers and lakes of the lower half of the South Island, and in reality most of the electricity demand is in the North Island and particularly in the North Island. Auckland Regions. There has always been debate over whether or not transmission lines are the best way to continue providing electricity in the face of this growing demand. As the owner and operator of the national grid, Tran's Power plans up to $1.5 billion in new investments, and before that can be approved, it must ensure that the Electricity Commission has not better way to do your job. the North Auckland and Northland Network (NAaN) is the combination of the two, but taking into account cost, efficiency and location. In New Zealand the technology is limited, so other methods of generating electricity without using transmission lines are also limited. Trans Power New Zealand could invest more in implementing new ideas to provide a solution to the alternatives and could perhaps come up with new ways of generating and distributing electricity, but my idea is not limited either, because The suggestions confirmed the sustainability of the existing network configuration, although capacity needs to be increased over time, as network flows are expected to continue to be dominated by the large amounts of loads in the North Island regions , in particular the upper part, and electricity will therefore circulate permanently mainly from renewable production in the southern regions.