Condensing turbines

This technology has more auxiliary equipment than atmospheric exhaust plants and is much larger with output reaching 100 MWe. It is more expensive pro rata due to its complexity, but, by way of compensation, it only uses half the quantity of steam per kWh compared with atmospheric exhaust plants.

Technical advances have made it possible to generate electricity with fluid temperatures as low as 80-90°C.

The International Geothermal Association (IGA) estimates that worldwide electricity-generating capacity from geothermal sources is over 8000 MWe, producing 50 TWh per year. This is expected to rise to 11,400 MWe by 2005. In addition to this there is the direct heat energy production. The estimated ultimate potential for high temperature geothermal electricity is 36,600 TWh per year. For heat alone, the global estimate is 14 million TJ (IGA).

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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