Choose glossary language


renewable energies

Synonyms: renewables, alternative energies, renewable energy systems, alternative power, non-conventional energies, unconventional energies

reegle definition:

Renewable energy is power generated from infinite sources, such as wind or solar power. Conventional energy is generated from finite sources, such as natural gas or fossil oil.

Wikipedia definition:

Renewable energy is energy that comes from resources which are continually replenished such as sunlight, wind, rain, tides, waves and geothermal heat. About 16% of global final energy consumption comes from renewable resources, with 10% of all energy from traditional biomass, mainly used for heating, and 3.4% from hydroelectricity. New renewables (small hydro, modern biomass, wind, solar, geothermal, and biofuels) accounted for another 3% and are growing very rapidly. The share of renewables in electricity generation is around 19%, with 16% of electricity coming from hydroelectricity and 3% from new renewables. The use of wind power is increasing at an annual rate of 20%, with a worldwide installed capacity of 238,000 megawatts (MW) at the end of 2011, and is widely used in Europe, Asia, and the United States. Since 2004, photovoltaics passed wind as the fastest growing energy source, and since 2007 has more than doubled every two years. At the end of 2011 the photovoltaic (PV) capacity worldwide was 67,000 MW, and PV power stations are popular in Germany and Italy. Solar thermal power stations operate in the USA and Spain, and the largest of these is the 354 MW SEGS power plant in the Mojave Desert. The world's largest geothermal power installation is the Geysers in California, with a rated capacity of 750 MW. Brazil has one of the largest renewable energy programs in the world, involving production of ethanol fuel from sugarcane, and ethanol now provides 18% of the country's automotive fuel. Ethanol fuel is also widely available in the USA. While many renewable energy projects are large-scale, renewable technologies are also suited to rural and remote areas, where energy is often crucial in human development. As of 2011, small solar PV systems provide electricity to a few million households, and micro-hydro configured into mini-grids serves many more. Over 44 million households use biogas made in household-scale digesters for lighting and/or cooking, and more than 166 million households rely on a new generation of more-efficient biomass cookstoves. 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. Climate change concerns, coupled with high oil prices, peak oil, and increasing government support, are driving increasing renewable energy legislation, incentives and commercialization. New government spending, regulation and policies helped the industry weather the global financial crisis better than many other sectors. According to a 2011 projection by the International Energy Agency, solar power generators may produce most of the world’s electricity within 50 years, dramatically reducing the emissions of greenhouse gases that harm the environment.

Source: dbpedia

Advanced view

Related terms

conventional energy, energy

Broader terms

clean energies

Narrower terms

soft energies


glossary info

How to Search Terms

Please enter a search term or choose a letter to navigate the glossary and to find definitions. This glossary aims to facilitate collaboration on the development of ambitious energy efficiency measures by clarifying definitions and highlighting common terminology. Definitions have been collected from trusted sources. It intended to expand this glossary in the future to include a wiki ensuring a truly collaborative process. If you contribute to this glossary please contact use at:

Understanding Relations

The relation browser enables the user to see the relations between terms.

Below is an explanation of the letters that appear on the arrows in the relation browser

C = Has Concept Scheme. Points to a concept scheme in the reegle glossary. Concept schemes provide the main categories of the reegleglossary.
T = Has Top Concept. Points to a top concept in the reegleglossary. Top Concepts are the top level concepts in a concept scheme.
N = Has Narrower. Points to a narrower concept of the selected concept