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Encyclopedia > Green energy
A solar trough array is an example of green energy
A solar trough array is an example of green energy

Green energy is a term describing what is thought to be environmentally friendly sources of power and energy. Typically, this refers to renewable and non-polluting energy sources. Image File history File links Solar_Array. ... Image File history File links Solar_Array. ... The phrase environmentally friendly is used to refer to goods or services considered to inflict little harm on the environment. ... Energy development is the ongoing effort to provide abundant and accessible energy through knowledge, skills, and constructions. ... Lightning strikes during a night-time thunderstorm. ... Renewable energy is energy which can be replenished at the same rate it is used. ... Water pollution Pollution is the release of environmental contaminants. ...


Green energy includes natural energetic processes which can be harnessed with little pollution. Anaerobic digestion, geothermal power, wind power, small-scale hydropower, solar power, biomass power, tidal power and wave power fall under such a category. Some versions may also include power derived from the incineration of waste. Anaerobic digestion is the breakdown of organic matter by bacteria in the absence of oxygen. ... Geothermal power plant in the Philippines Look up geothermal in Wiktionary, the free dictionary. ... Wind farm in Neuenkirchen, Dithmarschen, Germany. ... Undershot water wheels on the Orontes River in Hama, Syria Saint Anthony Falls Hydropower (or waterpower) harnesses the energy of moving or falling water. ... Solar power describes a number of methods of harnessing energy from the light of the sun. ... Biofuel is any fuel that derives from biomass - recently living organisms or their metabolic byproducts, such as manure from cows. ... Tidal Power is the power of electricity generation achieved by capturing the energy contained in moving water mass due to tides. ... Wave power refers to the energy of ocean surface waves and the capture of that energy to do useful work - including electricity generation, desalination, and the pumping of water (into reservoirs). ... For other forms of waste plant that produce energy see waste-to-energy Hong Kongs decomissioned Kwai Chung Incineration Plant Incineration is a solid waste treatment technology involving combustion of waste at high temperatures[1]. Incineration and other high temperature waste treatment systems are described as thermal treatment. In...


More controversial is nuclear energy's claim to be green. It is possibly sustainable, arguably renewable and produces virtually no atmospheric pollution during the energy production stage. However nuclear waste is a pollutant, as well as the carbon dioxide and other greenhouse gases generated by the large amount of energy required by transport, mining and pre- and post-production. Hence, nuclear power is rarely included in official green energy schemes. For the commercial production of electricity from nuclear energy, see Nuclear power. ... This article or section does not cite its references or sources. ... Renewable energy is energy which can be replenished at the same rate it is used. ... Political Punk band from Victorville, Ca WWW.MYSPACE.COM/NUCLEARWASTEX ... Pollutants are substances which directly or indirectly damage us or the environment. ... Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms. ...


Likewise, medium or large-scale hydroelectric power or sources of air pollution such as burning biomatter or petroleum, are often excluded from the label 'green energy'. Hydroelectric dam diagram The waters of Llyn Stwlan, the upper reservoir of the Ffestiniog Pumped-Storage Scheme in north Wales, can just be glimpsed on the right. ... Before flue gas desulfurization was installed, the emissions from this power plant in New Mexico contained excessive amounts of sulfur dioxide. ... Biomass is organic non-fossil material, collectively. ...

A wind turbine at Greenpark, Reading, England, generating green electricity for approx 1000 homes.
A wind turbine at Greenpark, Reading, England, generating green electricity for approx 1000 homes.

In several countries, current electricity retailing arrangements make it possible for consumers to buy green electricity, either by purchasing their electricity from a generating company that uses only renewable technologies, or by buying from a general supplier who undertakes to buy at least as much power from renewable sources as their "green" customers purchase. Generally green electricity commands a price premium compared with standard supplies. Obviously this option is only available where common carrier arrangements have been put in place to allow competitive supply of power. Image File history File linksMetadata Download high resolution version (1712x2288, 547 KB) A wind generator at Junction 11 of the M4 motorway, at Greenpark industrial estate, near Reading, Berkshire, England. ... Image File history File linksMetadata Download high resolution version (1712x2288, 547 KB) A wind generator at Junction 11 of the M4 motorway, at Greenpark industrial estate, near Reading, Berkshire, England. ... -1... Reading is a town and unitary authority (the Borough of Reading) in the English county of Berkshire. ... Motto: (French for God and my right) Anthem: God Save the King/Queen Capital London Largest city London Official language(s) English (de facto) Unification    - by Athelstan AD 927  Area    - Total 130,395 km² (1st in UK)   50,346 sq mi  Population    - 2005 est. ... One of the most influential doctrines in history is that all humans are divided into groups called nations. ... Electricity retailing is the final process in the delivery of electricity from generation to the consumer. ... A common carrier is an organization that transports persons or goods, and offers its services to the general public. ...


Renewable energy certificates (Green certificates, or green tags) are currently the most convenient way for consumers and businesses to support "green power". Over 35 million homes in Europe, and 1 million in the United States, are purchasing such certificates. The examples and perspective in this article or section may not represent a worldwide view. ... Green tags are a voluntary subsidy of the additional cost involved in generating electricity using various renewable energy methods. ...


No power source is entirely impact-free. All energy sources require energy and gives rise to some degree of pollution from manufacture of the technology.

Contents

Purchase of green energy

Purchase of green energy through the electrical grid

In the USA,and Canada, residential and commercial customers can purchase Green Power from either their utility or a green power provider. Green energy is available through one of the many third-party energy suppliers that sell electricity made from renewable sources. The energy is delivered via the local electric utility. The customer simply pays a slight premium on their monthly utility bill for the Green Energy or directly purchases from a green power supplier.


When energy is purchased from the electricity network, there is no way of knowing that the power that reaches the home is from green energy sources. The local utility company, electric company or state power pool buys their electricity from electricity producers, ranging from coal and nuclear to large scale hydropower and green energy sources such as wind power and solar power. Most electricity has its source in non-renewable and polluting energy sources such as coal and nuclear. Green energy currently provides a very small amount of electricity, generally contributing less than 2 to 5 % to the overall pool from which utilities buy their electricity. Lightning strikes during a night-time thunderstorm. ... A public utility is a company that maintains the infrastructure for a public service. ... For information regarding the 1970s childrens television show, see The Electric Company. ... Itaipu Dam is a hydroelectric generating station Electricity generation is the first process in the delivery of electricity to consumers. ... Lightning strikes during a night-time thunderstorm. ...


In order to make an impact, individuals who sign up for green energy either obligate the utility companies to increase the amount of green energy that they purchase from the pool and subsequently decrease the amount of non-green energy they purchase, or directly fund the green energy through a green power provider. If insufficient green energy sources are available, the utility must develop new ones or contract with a third party energy supplier to provide green energy, causing more to be built. Although there is no guarantee that turning on a light will mean that, say, a wind turbine is providing the electricity, by participating in green energy programs a consumer is having an effect on the energy sources used and ultimately is helping to promote and expand the use of green energy. They are also making a statement to policy makers that they are willing to pay a price premium to support renewable energy. The examples and perspective in this article or section may not represent a worldwide view. ...


In some countries such as the Netherlands, electricity companies guarantee to buy an equal amount of 'green power' as is being used by their green power customers. The Dutch government exempts green power from pollution taxes, which means green power is hardly any more expensive than other power.


Purchase of green energy through the gas grid

The market for heating is mostly serviced by gas and oil rather than electric power, due to the high cost per kilowatt of electricity. Distribution of cheap renewable electric power via the electrical grid has made it possible in many countries for the average consumer to choose renewable electric power, and in the same manner Renewable natural gas may in future be made available to the average consumer via the existing gas grid. [1][2] Renewable natural gas is a biogas which has been upgraded to a quality similar to natural gas. ...


Purchase of green energy through localized renewable systems

Those not satisfied with the third-party grid approach to green energy, that utilizes the power grid to deliver green energy, can still install their own locally-based renewable energy system. Renewable energy electrical systems from solar to wind to even local hydropower in some cases, are some of the many types of renewable energy systems available locally. Additionally, for those interested in heating and cooling their dwelling via renewable energy, geothermal heat pump systems that tap the constant temperature of the earth, which is around 7 to 15 degrees Celsius a few feet underground, are an option and save money over conventional natural gas and petroleum-fueled heat approaches. A geothermal exchange heat pump, also known as a ground source heat pump, is a heat pump that uses the Earth as either a heat source, when operating in heating mode, or a heat sink when operating in cooling mode. ... Fig. ... Celsius is, or relates to, the Celsius temperature scale. ... Natural gas is a gaseous fossil fuel consisting primarily of methane. ... Pumpjack pumping an oil well near Sarnia, Ontario Ignacy Łukasiewicz - inventor of the refining of kerosene from crude oil. ...


The advantage of this approach is that many US states offer incentives to offset the cost of installation of a renewable energy system. Individuals are usually assured that the electricity they are using is actually produced from a green energy source that they control. Once the system is paid for, the owner of a renewable energy system will be producing their own renewable electricity for essentially no cost and can sell the excess to the local utility at a profit.


See also

Energy Portal

Image File history File links Portal. ... Blue energy is the energy retrieved from the difference in the salt concentration between seawater and river water with the use of osmosis or reverse electro dialysis (RED) with ion specific membranes. ... A green tax shift is a fiscal policy which lowers the taxes on income including wages and profit, and raises taxes on consumption, particularly the unsustainable consumption of non-renewable resources. ... Tidal Power is the power of electricity generation achieved by capturing the energy contained in moving water mass due to tides. ... For the common automotive term of hybrid vehichle see: Petroleum electric hybrid vehicle A hybrid vehicle (HV) is a vehicle that uses two distinct power sources such as : an on-board rechargeable energy storage system (RESS) and a fueled power source for vehicle propulsion Human powered bicycle with battery assist... A tribrid vehicle is a third generation in alternative propulsion vehicles, that is, a bivalent hybrid vehicle with turbine (second generation), that also obtains energy from the ambient environment (solar panel, windmill or sail). ... Sequel, a fuel cell powered vehicle from General Motors A hydrogen vehicle is a vehicle, such as an automobile or aircraft, which uses hydrogen as its primary source of power for locomotion. ... A nuclear power plant at Grafenrheinfeld, Germany. ... Crude oil prices, 2004-2006 (not adjusted for inflation) In 2005 the Swedish government announced their intention to become the first country to break their countrys dependence on oil and other ‘fossil raw materials’ by 2020 [1]. As of 2005, oil supplies provided about 32% of the countrys... Alternative propulsion is a term used frequently for power train concepts differing to the standard internal combustion engine concept used in gasoline- or diesel-fueled vehicles. ... Renewable energy is energy which can be replenished at the same rate it is used. ... // Renewable heat is an application of renewable energy, namely the generation of heat from renewable sources. ... There are very few or no other articles that link to this one. ...

National / Continental

Canadian Hydro Developers Inc. ...

External links

The Open Directory Project (ODP), also known as dmoz (from directory. ...

Related Journal

  • International Journal of Green Energy[1]

References

  1. ^ Energy Research Centre of the Netherlands 'Heat from Biomass via Synthetic Natural Gas'
  2. ^ Danish Gas Technology Centre 'Sustainable Gas Enters the European Gas Distribution System'

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