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New Zealand has relatively abundant renewable energy resources in the form of hydro-power. However, we still get most of our energy from fossil fuels. Greater use of renewable sources (e.g. hydro, sun or wind) could give us more secure power sources for the future and help mitigate climate change. www.climatechange.govt.nz/spThere are many ways of converting power from the sun. Solar Photo-voltaic Electricity – Photo-voltaic (PV) cells collect and convert energy from the sun into electricity. Most are made from silica (an abundant resource) and sit stationary on roofs. New models are integrated into roofing materials so you don’t need 2 layers on the roof. Solar Water Heating - A solar collector, which usually consists of a series of pipes attached to a black heat-absorbing sheet, is placed in a sunny north-facing site (usually a roof) to heat water in the hot water cylinder . Wind Power - Wind energy has been used for thousands of years to drive machinery etc. A wide range of designs and sizes of wind turbines have been built over the centuries to harness wind energy. Last updated at 7:45pm on 12 June 2002 [ Kitchen ] [ Office ] [ Ten Simple Steps ] [ Bathroom ] [ Cleaning ] [ Building ] Download |
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