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What is Renewable Energy? Sources of Renewable Energy.

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The sources of renewable energy (Green energy) include Biomass, WInd, water or hydro, geothermal and solar energy. Lets find out how electricity is generated from each of them.

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There are many forms of renewable energy . Most of these renewable energies depend in one way or another on sunlight.

Wind and hydroelectric power are the direct result of differential heating of the Earth's surface which leads to air moving about (wind) and precipitation forming as the air is lifted. Solar energy is the direct conversion of sunlight using panels or collectors.

Biomass energy is stored sunlight contained in plants. Other renewable energies that do not depend on sunlight are geothermal energy, which is a result of radioactive decay in the crust combined with the original heat of accreting the Earth, and tidal energy, which is a conversion of gravitational energy.

Solar. This form of energy relies on the nuclear fusion power from the core of the Sun. This energy can be collected and converted in a few different ways. The range is from solar water heating with solar collectors or attic cooling with solar attic fans for domestic use to the complex technologies of direct conversion of sunlight to electrical energy using mirrors and boilers or photovoltaic cells. Unfortunately these are currently insufficient to fully power our modern society.

Wind Power. The movement of the atmosphere is driven by differences of temperature at the Earth's surface due to varying temperatures of the Earth's surface when lit by sunlight. Wind energy can be used to pump water or generate electricity, but requires extensive areal coverage to produce significant amounts of energy.

Hydroelectric energy. This form uses the gravitational potential of elevated water that was lifted from the oceans by sunlight. It is not strictly speaking renewable since all reservoirs eventually fill up and require very expensive excavation to become useful again. At this time, most of the available locations for hydroelectric dams are already used in the developed world.

Biomass is the term for energy from plants. Energy in this form is very commonly used throughout the world. Unfortunately the most popular is the burning of trees for cooking and warmth. This process releases copious amounts of carbon dioxide gases into the atmosphere and is a major contributor to unhealthy air in many areas. Some of the more modern forms of biomass energy are methane generation and production of alcohol for automobile fuel and fueling electric power plants.

Hydrogen and fuel cells. These are also not strictly renewable energy resources but are very abundant in availability and are very low in pollution when utilized. Hydrogen can be burned as a fuel, typically in a vehicle, with only water as the combustion product. This clean burning fuel can mean a significant reduction of pollution in cities. Or the hydrogen can be used in fuel cells, which are similar to batteries, to power an electric motor. In either case significant production of hydrogen requires abundant power. Due to the need for energy to produce the initial hydrogen gas, the result is the relocation of pollution from the cities to the power plants. There are several promising methods to produce hydrogen, such as solar power, that may alter this picture drastically.

Geothermal power. Energy left over from the original accretion of the planet and augmented by heat from radioactive decay seeps out slowly everywhere, everyday. In certain areas the geothermal gradient (increase in temperature with depth) is high enough to exploit to generate electricity. This possibility is limited to a few locations on Earth and many technical problems exist that limit its utility. Another form of geothermal energy is Earth energy, a result of the heat storage in the Earth's surface. Soil everywhere tends to stay at a relatively constant temperature, the yearly average, and can be used with heat pumps to heat a building in winter and cool a building in summer. This form of energy can lessen the need for other power to maintain comfortable temperatures in buildings, but cannot be used to produce electricity.

Other forms of energy. Energy from tides, the oceans and hot hydrogen fusion are other forms that can be used to generate electricity. Each of these is discussed in some detail with the final result being that each suffers from one or another significant drawback and cannot be relied upon at this time to solve the upcoming energy crunch.

Can A Country Achieve 100% Renewable Energy?
If you think 100% renewable energy will never happen, think again. Several countries have adopted ambitious plan to obtain their power from renewable energy. These countries are not only accelerating RE installations but are also integrating RE into their existing infrastructure to reach a 100% RE mix. Read our article..
What are renewable energy sources? Solar power can be used directly for heating and producing electricity or indirectly via biomass, wind, ocean thermal, and hydroelectric power. Energy from the gravititational field can be harnessed by tidal power; and the internal heat of the Earth can be tapped geothermally.

These tools and more can help make the transition from non-renewable to renewable and environmentally friendly energy. However, none of these is sufficiently developed or abundant enough to substitute for fossil fuels use. Every one of these power sources (with the exception of hydroelectric) has low environmental costs, and combined have the potential to be important in avoiding a monumental crisis when the fossil fuel crunch hits. These energy sources are often non-centralized, leading to greater consumer control and involvement.

However, currently each of these energy forms is significantly more expensive than fossil fuels, which will lead to economic dislocations and hardship if they become the only power source for the future.

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There are many forms of renewable energy . Most of these renewable energies depend in one way or another on sunlight. Wind and hydroelectric power are the direct result of differential heating of the Earth's surface which leads to air moving about (wind) and precipitation forming as the air is lifted.

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How does it work? What kinds are there? Can I make my own? Everything you wanted to know about renewable energy.

Also referred to as green energy, renewable energy is generated from natural and renewable energy sources that can be replenished - as opposed to being generated by finite resources such as oil or coal.

Examples of renewable energy include solar energy, wind energy, water power (hydroelectricity) and biomass.

We call these green energy sources types of "renewable energy" because, unlike fossil fuels, such as coal and oil, green energy sources will not run out.

Wind energy - Uk has many wind farms, both on and offshore. Read more about the pros and cons of wind energy here.

Hydroenergy - Also called hydropower, this is a common renewble energy generation choice of green energy suppliers

Solar energy - About 4 million homes in the UK have solar panels for their home. These panels convert light from the sun into electricity.Read more about solar panels here.

Biomass - Whether this qualifies as a green energy source is debateable; the burning of natural resources such as wood produces carbon emissions. However, because materials such as wood are considered renewable, it qualifies as such.

These days, many energy suppliers offer at least one "green" tariff, but what that means can be quite complicated.

There are three potential ways they offer renewable energy tariff:

Energy match: Your energy supplier matches some or all of the electricity you use by producing renewable energy that they feed into the National Grid.

Green investment: This means your supplier funds renewable energy infrastructure or projects. These days, most green suppliers do this in addition to the above.

Carbon offset: Your supplier offsets the CO2 emissions from the energy you use by planting trees or investing in CO2 reducing projects.

No matter how a renewable tariff defines "green energy", the good news is, the more households that switch to a green energy deal, the more renewable energy gets generated or invested in.

These days finding and switching to a green energy plan is easier than ever.

Start a gas and electricity comparison and simply opt for the "green plans" filter.

It used to be that opting to go green for your energy came at a premium. However, thanks to a more competitive and open energy market, there are many suppliers that can now offer renewable energy deals.

In fact, in many cases, green energy plans are some of the cheapest available.

Yes! The small-scale production of renewable energy is called microgeneration and refers to systems under 50kW for electricity and 45kW in the case of heat. It typically takes the form of solar energy, wind energy, or biomass.

Thanks to Feed-in Tariffs (FiTs), microgeneration of renewable energy is becoming more popular in the UK.

Using biodiesel means we burn less fossil fuels, but growing biodiesel crops takes a lot of land, which arguably could be used for food production, and it increases the pesticides and fertilisers we use.

Using renewable energy like solar electricity will reduce your carbon footprint because it does not produce carbon dioxide.

We can try to reduce climate change by using renewable energy instead of fossil fuels.

Hydroelectric power plants usually involve damming rivers or putting barriers in the sea. Because of this, some people argue that this form of renewable energy is bad for the environment.

Many people argue that nuclear energy is renewable energy as it does not use fossil fuels directly. However, like fossil fuels, nuclear fuels will eventually run out.

Nuclear energy does not produce carbon dioxide, so it is sometimes considered to be a green form of energy. However, carbon emissions do occur during the mining and processing of the nuclear fuel, and nuclear energy produces nuclear waste, which is difficult to dispose of safely.

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How does it work? What kinds are there? Can I make my own? Everything you wanted to know about renewable energy. Also referred to as green energy, renewable energy is generated from natural and renewable energy sources that can be replenished - as opposed to being generated by finite resources such as oil or coal.

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It exists because it is natural and it isn't formed. Some of it doesn't exists by themselves, they are formed. They are always available to be tapped, and it will not run out. Some people call it Green Energy (which is another term for Renewable Energy).

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We can try to reduce climate change by using renewable energy instead of fossil  fuels. Geothermal energy uses heat from inside the Earth's core to produce electricity or heat water or homes. Renewable energy source works well in volcanic areas where heat from the Earth's core comes close to the surface.

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There are 7 types of renewable sources.
1. Solar Energy
2. Wind Power
3. Hydroelectric Energy
4. Biomass, the term of energy for PLANTS
5.Hydrogen, fuel cells
6.Geothermal Energy
7. Different forms of energy

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We are researching about Renewable Energy