Renewable Energy

What do we mean by Renewable Energy?

The term "renewable energy" is a shortcut that refers to energy obtained from sources that are renewable, i.e. that are essentially inexhaustible. Regenerating resources contrast with, for example, fossil fuels (oil, gas, coal), of which there is a finite supply.

Renewable sources of energy include conventional hydroelectric power, wood, geothermal, wind, photovoltaic, and solar thermal energy. Municipal solid waste (MSW) is also considered by many to be a renewable energy resource.

Because these sources can produce energy without being depleted, renewable energy technologies appear as more sustainable in the long term than traditional fossil fuels, and in most cases are also more environment friendly in the short-term. In addition, because most sources of renewable energy are indigenous, they tend to reduce traditional fossil fuel importing countries dependence on foreign resources.

The use of renewable energy is not new. 150 years ago, wood supplied 90% of our energy needs. To date, however, most renewable energy technologies are still in the research or development stages.