Amongst Australia's wealth of natural resources is sunlight. In fact Australians have so much sunlight they sometimes overlook it as a natural resource. In an area of Australia nicknamed "Sunraysia" for it's abundance of sunshine, an Australian company EnviroMission aims to build a solar energy plant on a scale never before seen.

The "Solar Power Tower" will be the worlds biggest solar power plant and one of the tallest structures ever built by man. Standing a kilometer high and with a base six times the size of New York's Central Park the tower is based on a well known principle. Hot air rises.

The base of the tower is an enormous greenhouse known as the expansive collector zone. As the Sun's rays beat down on the greenhouse the air inside becomes heated. With nowhere else to go the hot air rushes towards the tower and as it does it drives 32 x 6.25MW pressure staged turbines located at it's base.

The 200 Mega Watt tower will produce enough energy to power 200,000 homes without any harmful greenhouse gas emissions. That's the equivalent of taking 90,000 cars off the road.

Unlike a number of projects that have popped up over the last few years this technology is tried and tested. The prototype for the tower operated for seven years in Manzanares Spain and consistently generated 50kW output of green energy.

As well as being clean green and the way of the future it's set to join Ayres Rock and The Great Barrier Reef as one of the worlds most popular tourist attractions.