32 Facts About Renewable energy

Renewable energy is energy that is collected from renewable resources that are naturally replenished on a human timescale.

Renewable energy systems are rapidly becoming more efficient and cheaper and their share of total energy consumption is increasing, with a large majority of worldwide newly installed electricity capacity being renewable.

Renewable energy resources exist over wide geographical areas, in contrast to fossil fuels, which are concentrated in a limited number of countries.

Renewable energy flows involve natural phenomena such as sunlight, wind, tides, plant growth, and geothermal heat, as the International Energy Agency explains:.

Renewable energy is derived from natural processes that are replenished constantly.

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Renewable energy stands in contrast to fossil fuels, which are being used far more quickly than they are being replenished.

Active solar technologies encompass solar thermal Renewable energy, using solar collectors for heating, and solar power, converting sunlight into electricity either directly using photovoltaics, or indirectly using concentrated solar power .

Solar Renewable energy can be harnessed anywhere that receives sunlight; however, the amount of solar Renewable energy that can be harnessed for electricity generation is influenced by weather conditions, geographic location and time of day.

Wind Renewable energy was the leading source of new capacity in Europe, the US and Canada, and the second largest in China.

Globally, the long-term technical potential of wind Renewable energy is believed to be five times total current global Renewable energy production, or 40 times current electricity demand, assuming all practical barriers needed were overcome.

Plant Renewable energy is produced by crops specifically grown for use as fuel that offer high biomass output per hectare with low input Renewable energy.

High temperature geothermal Renewable energy is from thermal Renewable energy generated and stored in the Earth.

Low-temperature geothermal is an increasingly important renewable technology because it both reduces total annual energy loads associated with heating and cooling, and it flattens the electric demand curve eliminating the extreme summer and winter peak electric supply requirements.

Marine Renewable energy is the Renewable energy carried by ocean waves, tides, salinity, and ocean temperature differences.

The oceans have a tremendous amount of Renewable energy and are close to many if not most concentrated populations.

Ocean energy has the potential of providing a substantial amount of new renewable energy around the world.

Implementation of energy storage, using a wide variety of renewable energy technologies, and implementing a smart grid in which energy is automatically used at the moment it is produced can reduce risks and costs of renewable energy implementation.

Electrical Renewable energy storage is a collection of methods used to store electrical Renewable energy.

Electrical Renewable energy is stored during times when production exceeds consumption, and returned to the grid when production falls below consumption.

Renewable energy in developing countries is an increasingly used alternative to fossil fuel energy, as these countries scale up their energy supplies and address energy poverty.

Renewable energy technology was once seen as unaffordable for developing countries.

International Renewable Energy Agency is an intergovernmental organization for promoting the adoption of renewable energy worldwide.

The then United Nations' Secretary-General Ban Ki-moon has said that renewable energy has the ability to lift the poorest nations to new levels of prosperity, and in September 2011 he launched the UN Sustainable Energy for All initiative to improve energy access, efficiency and the deployment of renewable energy.

Whether nuclear power should be considered a form of renewable energy is an ongoing subject of debate.

Statutory definitions of renewable energy usually exclude many present nuclear energy technologies, with the notable exception of the state of Utah.

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Also some countries rich in critical materials for renewable energy technologies are expected to rise in importance in international affairs.

Study found that transition from fossil fuels to renewable energy systems reduces risks from mining, trade and political dependence because renewable energy systems don't need fuel – they depend on trade only for the acquisition of materials and components during construction.

The key is ensuring that renewable energy facilities are built in places where they do not damage biodiversity.

Transition to renewable energy depends on non-renewable resources, such as mined metals.

Probably the second oldest usage of renewable energy is harnessing the wind in order to drive ships over water.

From hot springs, geothermal Renewable energy has been used for bathing since Paleolithic times and for space heating since ancient Roman times.

Development of solar engines continued until the outbreak of World War I The importance of solar energy was recognized in a 1911 Scientific American article: "in the far distant future, natural fuels having been exhausted [solar power] will remain as the only means of existence of the human race".