Archive for the ‘Renewable Energy’ Category

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Renewable Electricity

It is possible to generate renewable electricity by harnessing the power of renewable natural resources.

Most renewable energy resources are derived directly or indirectly from the sun and solar radiation.

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Solar energy is used directly for heating and electricity generation and indirectly through the usage of energy from the wind and waves, and geothermal energy resulting from the heat generated within the earth.

Renewable electricity is electricity that has been generated by using these continually replenished resources.

Some technologies are already producing very efficient power while others need further research and development.

In the future renewable electricity could replace a significant proportion of our current fossil fuel use, and thus reduce the overall environmental impact that our current energy sources have.

The sun’s power can already be converted into renewable electricity. There are a number of different technologies available, but in the past only few people have taken advantage of them.

One such technology to convert solar power into renewable electricity is a solar technology called `solar collectors`.

Solar collectors are known as active solar heating. A solar collector is mounted on the roof of a building where it collects solar radiation to produce heat at temperatures usually under 100C.

This type of renewable electricity is often used in private households for the hot water supply in showers and the swimming pool heating.

Solar collectors are easy to install. You can either hire an energy company that deals in clean energy to supply a solar collector for you at a cost, or you can simply build one yourself using materials that you can easily buy at your local hardware store.

Solar collectors are a very basic technology to produce renewable electricity. A more complex technology that makes use of solar power in a different way is a solar thermal engine.

In principle solar thermal engines apply the same idea as the solar collectors discussed above, however, this technology is much more efficient and thereby produces greater amounts of renewable electricity.

Solar thermal engines use active solar heating at very high temperatures in order to drive steam to turbines which then produce high levels of electricity.

Both systems are currently already being used but their usage is expected to increase dramatically in the future when we no longer use fossil fuels as a source of power or electricity.

In addition to using renewable electricity there are a number of measures we all can take to use passive solar heating. This is an important aspect of energy policy because it reduces the overall amount of energy needed for heating a home or an area.

For instance, opening the blinds during daytime to let the sunlight in and closing them at night just before dusk and before it gets dark are important practices to help maximize the benefits of naturally available solar energy.

To use passive solar heating is a great way to take advantage of the consistent energy available from the sun in combination with renewable electricity.

Homes can be designed with windows that allow lots of sunshine in. This is especially important during the winter as it can help to reduce the need for artificial lighting or heating.

Houses must also be well insulated and windows should be double-glazed to keep the home warm with only a minimum of electricity.

If you need advice on how your house could make the most of renewable electricity and passive solar heating contact your local energy company or a building company that specializes in low energy building.

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Renewable Green Energy

Nearly every day we can read in the newspaper that traditional sources of energy are being exhausted quickly and that  we need to change to renewable green energy.

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After watching Al Gore’s documentary “An Inconvenient Truth”, you  understand that we need to drastically change the way in which we use fossil fuels.

Otherwise, the consequences for our environment such as climate change and pollution will be dramatic and irreversible.

The usage of renewable green energy does not pose any of the dangers to the environment fossil fuels and nuclear power do.

There are a few renewable green energy options that could provide an answer to our energy problem nationwide. Solar, wind and water power have more energy potential than all of the remaining domestic fossil fuel reserves.

It is of great urgency that we reduce our fossil fuel consumption in order to preserve the environment that we have left.

We must increase our usage of renewable green energy before it is too late. According to climatologists global warming is progressing quickly and we humans have caused much of the problems.

The sun has been warming the earth for millions of years. However, today gases such as carbon dioxide trap the heat in the atmosphere and thereby preventing the atmosphere from cooling down sufficiently again.

The more carbon dioxide we produce by burning oil and coal the stronger this greenhouse effect will become and our planet will overheat.

For some people the importance of this fact is not clear. After all, who doesn’t like to live somewhere where it is a few degrees warmer.

However this increase in atmospheric temperatures causes changes in seasons, warms up the arctic circle, destroys plants and animals  and causes deadly heat waves.

By replacing our consumption of types of energy based on fossil fuels with renewable green energy such as solar power and wind power, we can minimize the effect of global warming.

In contrast to fossil fuels, the energy of the sun is a renewable and sustainable resource which can be used to generate power.

Different solar technologies, e.g. solar collectors are already in use today and many new buildings take advantage of solar energy directly or indirectly, for example, for their heating requirements.

In a number of different countries the usage of small solar collectors to provide hot water for the home is already very common.

Countries such as Australia and Japan are already taking full advantage of renewable green energy. As Americans we need to make our contribution to solving the worldwide problem of climate change by implementing these technologies in our daily lives.

In Europe, in Vienna, Austria to be precise, they have a well-known energy efficient house that makes use of many different ideas and solar technologies.

The windows are designed to allow the sunshine into the rooms during the winter, while during the summer screens keep the house cool. The house is well insulated to prevent it from losing heat to the outside.

A solar power hot water system provides warm water and the outdoor lighting is solar powered.

There are already many things we can do to make more use of renewable green energy to help us live in a cleaner and greener environment.

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Sources of Renewable Energy

For more than 100 years fossil fuels mostly oil, coal and gas have been the major source of energy.

Today, we are beginning to run out of these fossil fuels that over the years have created a lot of environmental problems.

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More and more people are now beginning to look for alternative sources of renewable energy. The most promising options are solar, wind and marine energy.

Solar power is currently probably the most discussed and developed of all the sources of renewable energy.

The sun continuously produces a huge amount of power and various technologies already exist to convert this solar power into electricity.

A very popular option is to use solar collectors. These heat-absorbing panels can already be seen on many rooftops.

Solar collectors absorb solar energy and convert it into heat energy to warm up water. Once the water is heated it is stored in tanks and can then be used to heat the shower in your house or to heat a swimming pool.

Wind power is another of the main sources of renewable energy.

Wind energy is actually a derivative of the sun’s energy. As the sun heats different surfaces of the atmosphere while other surfaces cool down this creates an imbalance. The imbalance in pressure in turn creates the winds.

A big advantage of wind power over the burning of fossil fuels is that it is available in abundance and does not release any greenhouse gases into our environment.

Even though wind energy has only recently been discussed as one of the viable sources of renewable energy it is not a new concept.

The ancient Egyptians have already used wind power to generate electricity and by the beginning of the 20th century Denmark and the rest of Europe were using wind power extensively.

However, the wind power industry was destroyed when cheap oil and gas became available.

Today, due to concerns over green house gas emissions and other pollution the interest in wind power has risen drastically again.

Marine energy is another popular type of the main sources of renewable energy. Scientists are trying to develop technologies that use energy of the waves and tides to produce electricity.

Marine energy is a sustainable source of energy with limited negative effect on our environment.

The idea to use water to generate energy is not a completely new idea but currently you cannot yet buy any commercial wave energy devices.

However, some technology has already been developed but it is still being tested. On the Scottish island of Islay, for example, a device with the name LIMPET is already producing power.

Consistent research and development produces more and more innovations over time.

Next time you read your newspaper or an environmental magazine see if you can find an article about new technologies in the area of marine energy or any of the other sources of renewable energy.

The last of the sources of renewable energy that we are going to talk about in this article is geothermal energy.

Geothermal energy is taking advantage of a combination of salt water and steam that is trapped in rock far below the earth’s crust.

Natural hot springs are the best known examples of geothermal energy. They have been used for hundreds of years.

However, geothermal heat pumps are a newly invented energy technology.

Even though geothermal energy is sustainable the problem is that it is not available everywhere.

First of all, the natural resources of salt water and steam have to be present and secondly extracting the steam can be quite expensive.

However, geothermal energy is one of the sources of renewable energy and as such it offers us another option when looking for a solution to our current energy crisis.

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Renewable Alternative Energy

It would be difficult to imagine a life without electricity.

Every time we switch on the light at home, turn on the television or even use a hair dryer we consume electricity.

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Our daily energy consumption is huge and it is time for us to look for renewable alternative energy.

At the moment, society is generating most of its’ energy by burning fossil fuels such as coal, oil and gas.

However, supply levels of these fossil fuels are running low and even more importantly they produce huge  problems for our environment and our health.

Luckily, there are other options available, and the time is ripe to start making use of renewable alternative energy.

Renewable energy takes advantage of an energy source that is constantly replenishing itself without running out.

The sun is a great example of a source for renewable alternative energy as it will continue to shine for a very long time to come.

Renewable alternative energy includes different kinds of energy such as wind power, solar power, marine power (waves and tides) and geothermal energy which can be explored in some parts of the world.

Fossil fuels on the other hand are non-renewable resources – once we have used them there are none left.

Fossil fuels have actually developed from the remains of the plants and animals such as the dinosaurs that lived on earth millions of years ago.

While they took millions of years to develop we are exhausting them at extremely high speeds.

Today, we can no longer justify our reliance on fossil fuels especially as there is plenty of other renewable alternative energy available.

Using solar power as a source for renewable alternative energy is a natural choice. Most of the energy we find on earth comes directly or indirectly from the sun and the energy the sun produces would be more than enough to satisfy all our energy needs.

The predominant solar technology in use today are solar collectors. You can see these black boxes being attached to the roofs of houses where they collect the heat of the sunlight.

The heat is used to warm water that runs through the coils inside the collector. The hot water is then stored in tanks so that it can be used as warm water for the shower or to heat up the swimming pool.

The International Energy Agency states that a solar water system is capable of supplying 50%-80% of the hot water needs for a whole family.

That means that a family using a solar water system as a renewable alternative energy can reduce its’ reliance and consumption of fossil fuels by a significant percentage.

The more households that implement this technology the bigger the difference to the pollution levels in this country and world wide. If we all work together we can make a difference!

The usage of solar collectors is also very scalable. You can choose between a single collector on the roof of a home to hundreds of collectors that serve a whole community.

Currently, setting up and using renewable alternative energy, e.g. using a solar water heater, requires a considerably higher financial commitment of private households than the usage of traditional forms of energy.

This obstacle could be overcome by the government by offering greater financial incentives for the usage of renewable alternative energy such as solar power.

This could encourage the addition of residential solar heating systems to newly built houses. Up to now, 80% of all solar water heating systems that were installed were installed in existing homes.

Using solar energy to provide a portion of your power needs will benefit you, your family and our environment.

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Renewable Energy Technology

In the past many countries have thought to find the answer to our energy crisis in nuclear power.

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Governments spent (and are still spending) huge amounts of money on research and development of nuclear power even though nuclear power causes just as many problems as fossil fuels do (maybe even more).

Today it is clear that we need to focus more on the development of renewable energy technology. If we don’t want to live in an environment that is ruined by pollution and greenhouse gases then we really have no other choice.

If more money had been spent on the research and development of renewable energy technology instead of nuclear power the cost of renewable energy technology would be much lower today.

Our renewable energy industry would probably be able to compete in the global energy market without the government subsidies needed today to help this industry off the ground.

At governmental level, the development of renewable energy technology is being helped by the National Renewable Energy Laboratory (NREL), a faculty of the US Department of Energy (DOE).

The focus of the laboratory is on four key areas of research and development: renewable fuels, renewable electricity, integrated energy systems and strategic energy analysis.

In 2009 the laboratory had funds allocated in the following renewable energy areas:

• Solar – $72.4 m
• Biofuels- $35.4 m
• Wind energy- $33.9 m

Investing in renewable energy technology has become very popular and it is being perceived as one of the greatest investment opportunities of the century.

Today, renewable energy is already a big market with many more big names  interested in getting a large piece of the action while simultaneously helping the environment.

Sir Richard Branson is investing $3 billion to help scientists in their search for renewable energy sources that will eliminate the usage of fossil fuels.

Big companies like Wal-Mart, GE and Google have also invested in renewable energy technology.

At its’ headquarters, Google has invested in a 1.6 MW PV system to supply about 30% of the buildings normal electricity needs.

In the United States, the search for and development of renewable energy technology is in full swing and people are eager to integrate renewable energy into the daily lives.

More and more people want to make a difference by using renewable energy.

You can also play your part in the implementation of renewable energy technology into our society. Why not integrate solar power into your home?

You could start by changing the outdoor lighting from electrical or gas lights to solar lights or make usage of a solar hot water system for your house.

Learn about all the exciting developments in renewable energy and solar power.

Talk to your local energy company to find out how you can install technologies that use renewable energy and thereby cut down on your fossil fuel consumption.

There are already many things we can do – don’t wait for the big electric companies to tell us what we should do – take the initiative!

Renewable energy is not just a passing fashion or a short-term trend. Renewable energy technology is certainly the best solution we have to the many energy and pollution problems that all of us are currently facing!

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Renewable Energy Sources

One of the most common uses of renewable energy is to heat the water of outdoor swimming pools using solar collectors.

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While solar energy is a familiar terminology these days, many people don’t know much about any of the other renewable energy sources yet? These are wind, geothermal heat, and rain.

In this article all different types of renewable energy sources and there applications will be explained.

When you have a better understanding of what renewable energy is and that it is naturally replenished you can make more informed decisions. With that heightened environmental awareness you can start to make changes to your lifestyle by consuming less traditional forms of energy.

Today, solar energy has received the most media attention because it is one of the most used renewable energy sources worldwide.

The term solar energy refers to the conversion of energy from the sun into power for all kinds of appliances.

There are already many everyday devices on the market that use solar energy technology. The list includes solar lights, calculators and many items used for hiking and camping.

Anybody who is interested in helping to protect our environment could, for example, use solar power in their house.

You could choose to have your solar power equipment installed by one of the many solar energy providers that are available all over the country. Be aware though, the initial set up can be a little bit expensive with the unit costing approximately $20,000.

Another one of the renewable energy sources that is already being used in this country is wind energy.

Wind turbines are the most common technology to convert wind power into electricity. The wind spins the blades of the turbine around a hub and the main body then spins a generator around.

These days small wind turbines can be found on farms and ranches and they already produce approximately 2,500 megawatts (mw) of energy.

The further expansion of wind energy as one of the major renewable energy sources has been hindered by the high initial installation costs, the fact that wind does not blow every day or everywhere. Therefore, wind energy is more applicable in some states and during specific times of the year.

Geothermal heating is the next of the renewable sources of energy that we discuss in this article.

In principle, geothermal heat takes advantage of the energy/heat found underground below the earths crust.

Geothermal heat pumps are currently the most commonly used type of geothermal technology. Geothermal heat pumps have replaced the older air source heat pumps as the new “in” product in the area of renewable energy sources.

While most people have probably heard of solar energy and some have heard of geothermal energy hardly anybody has heard anything about rain energy, yet.

Scientists have proven that it is possible to generate electricity from falling water drops.

The idea is still very new and lot’s of research and development is needed to get this latest addition to the family of renewable energy sources off the ground but new technologies are being developed almost on a daily basis.

Once the technical challenges are overcome rain energy will be as popular as other renewable energy sources.

We hope this article could assist you in deepening your understanding of the renewable energy sources that are already available today.

New technologies are being constantly introduced that offer new ways to solve our current energy crisis using renewable energy sources and thereby eliminating our dependence on other forms of energy such as fossil fuels or nuclear power.

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Renewable Energy Power

Our fossil fuel resources are running low and burning them causes a number of hazards to the environment.

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We cannot replenish used fossil fuel resources and the only way to avoid further damage to the environment is to eliminate our dependence on them completely and take advantage of renewable energy power.

There are many alternatives to using fossil fuels as a form of energy.

One of the best options is to use the energy from the sun and convert it into Solar power.  Most of life on earth depends on the sun and there is enough energy to power the world 1000 times over.

Another great option is Wind power. Here, wind is being utilized to turn wind turbines which in turn then produce electricity.

Marine energy is another option. It converts energy produced by the waves and the tides into electricity. This technology needs to be further developed but it certainly offers many benefits.

There are certainly other renewable energy power options being researched, but the three mentioned above are currently in a leading position. They are also the only options that have the potential to provide global energy solutions.

Solar power is a renewable energy power that can already be used very efficiently today.

Despite the fact that people knew for centuries how the sun can be used to produce electricity, fossil fuels became the dominant choice in the early 1900′s as they were cheap and readily available.

However, our society has been using fossil fuels too fast and they are running out.

Provided that we have the right technologies to harness the heat of the sun there is enough energy to power our whole society.

Many people worldwide are already using solar collectors as an alternative technology to heat water for showering and washing. Solar collectors are a cheaper form of electricity and can even provide hot water in times of an electricity shortage.

Now is the best time to start using this technology because the prices for solar collectors will probably only go up as electricity prices increase in the future (due to the shortages of fossil fuels).

In addition, using solar power has great environmental benefits – no smog, acid rain or other gas emission and instead the sun continually replenishes itself.

Wind power is another good renewable energy power that has proven itself to be successful in the past.

As early as 1890 wind power was used as a source of electricity in continental Europe and for years windmills were used to pump water and mill grain.

During the last decade wind power has emerged as a potential candidate to provide a global and sustainable solution to our energy crisis. Today, you can find wind farms all around the globe that are making use of this kind of renewable energy power.

The concept behind this technology is rather simple but it works very well: the wind is spinning three blades that are attached to a rotor. The spinning of the rotor is then converted into electricity.

The only problem with this technology is that for wind power to work there has to be wind. This technology will therefore work better in some corners of the world than others.

The third type of renewable energy power – marine energy – has not yet been researched and developed as fully as solar and wind power. However, the evidence so far suggests that this technology can also work very efficiently.

It is just a question of time until marine energy is in the mainstream as solar power and wind power already are today.

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Green Renewable Energy

The process of generating electricity from fossil fuels involves the burning of the fuel. During this process gasses are released into the air and solid waste is a by-product.

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This is causing massive damage to our environment. Over recent years people have become more interested in green renewable energy.

As a result of this increased environmental consciousness more and more people have started to recycle waste and use less plastic bags (plastic bags do not decompose).

As sources of fossil fuels are depleting quickly we are forced to find alternative sources of energy.

Green renewable energy such as solar energy, wind energy, marine energy and geothermal energy is currently being viewed as the best option as their usage does not have the same disastrous effects on our environment as fossil fuels or nuclear power.

Green renewable energy sources are self-replenishing sources which means they are not going to run out soon. The sun will hopefully continue shining and the wind blowing.

Solar power and wind power are currently the most developed green renewable energy technologies. One reason might be there global applicability.

The technologies in the areas of marine energy and geothermal energy are currently less developed as the usage of these energy sources depends more strongly on location.

In the long run the goal of our society should be to use green renewable energy to satisfy all our energy needs without relying on the consumption of fossil fuels.

The most popular form of green renewable energy is definitely solar energy. Solar power has already been used for many years to power our calculators and keep our homes warm. Today, many more solar technologies have been developed and we can now use solar power to provide hot water.

This technology named solar collector or solar panel was first patented by Horace de Saussine.

Nowadays, many houses especially throughout California have a solar collector on their roof to keep the temperature in their swimming pool nice and warm.

In many countries worldwide green renewable energy systems are being used to heat up water, particularly for showering and washing. In Japan and Israel, for example, many households already use small solar collectors to provide hot water.

In the United States this type of solar technology is not yet being used to its full potential. However, scientists see solar energy as the only way forward in the future.

Another very popular form of green renewable energy is wind energy. Over 20,000 wind turbines are already in use today, generating electricity and an even larger number that is used for pumping water.

In those areas in the world where wind is blowing strongly and frequently wind energy could even become the primary source of electricity.

One of the big benefits of wind power is that it does not produce any greenhouse gas emissions.

The wind power industry is currently the fastest growing type of electricity generation and the United States are leaders in the wind power market with Europe following right behind.

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Alternative Renewable Energy

With the worlds’ population growing and our economies developing quickly the demand for electricity has grown exponentially as well. With it comes an increased usage of fossil fuels.

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Because of the damage these fossil fuels are causing to our environment many people are now looking for alternative renewable energy sources to power our society. The burning of fossil fuels is a major contributor to pollution effects such as acid rain, smog and global warming.

For some years governments thought that nuclear power could be the answer to our energy problems. Today we know of the many dangers this technology poses.

Based on the latest scientific knowledge alternative renewable energy forms are the best alternative to fossil fuels and nuclear power.

The three main types of alternative renewable energy are solar energy, wind energy and marine energy. Solar technology converts the sun’s radiation into energy that we can use.

Wind power technology uses wind turbines to generate electricity, and marine energy is energy that is derived from the waves and tides of the sea.

Since we have so many alternative renewable energy options, why do we still burn copious amounts of fossil fuels? In this article we try to answer this question as well as many other questions you may have about alternative renewable energy.

One of the main characteristics of alternative renewable energy source is the fact that they continually replenish themselves. In other words, there is no danger that we might run out of sun, wind or water energy any time soon.

Alternative renewable energy is also a better option than fossil fuels because no green house gases are released during the energy generation process. Alternative renewable energy is therefore often referred to as clean or green energy.

As a society we are much better off using energy sources that are already freely available in nature and in addition avoid all types of energy that cause damage to our environment. Fossil fuels and nuclear power fall under that description.

Wind turbines that generate electricity from wind do not release any greenhouse gases into the atmosphere. Wind energy even has the potential to satisfy our country’s growing need for electricity.

However, despite these advantages the usage of wind as an alternative renewable energy has been held back for decades.

For hundreds of years and even before the Middle Ages windmills have long made use of wind energy to grind grain and pump water.

Wind power is a derivative of solar power, indirect solar power, if you like.

Due to the spinning of the earth the sun heats up different parts of our atmosphere. While one part is being heated up another one is cooling down. This leads to differences in pressure in the atmosphere. It is this difference in atmospheric pressure that causes wind to blow.

Today, wind power is one of the fastest growing forms of alternative renewable energy worldwide.

The technology behind wind turbines is actually surprisingly simple but effective. The shaft of an electricity generator is being fitted with rotor blades. The  wind then spins the blades which in turn rotate the generator to produce electricity.

Many wind farms have already been built all over the world to make use of this alternative renewable energy form. In addition, significant research and development is being conducted to find ways to built more wind farms offshore.

The biggest advantage of an offshore location are the stronger and more frequent winds one can find in the ocean. Some wind farms were already built along the coast lines of some countries and the technology is very promising.

As wind power technology develops wind power might become a major global energy provider.

The sun releases an abundance of energy every day and it makes sense for our society to try and harness as much of this alternative renewable energy as possible.

The main reasons why people want to use solar power are that it is freely available, vast and renewable.

In the past the only way in which houses took advantage of the sun’s energy was through the windows, i.e. the sunlight was used as a natural light source and to warm the rooms.

However, over the past five years more and more people started using the sun to provide hot water for their household, too.

There are already numerous solar technologies available to use in your home such as solar hot water systems and solar heaters for swimming pools.

However, if we want to completely substitute our current fossil fuel consumption with alternative renewable energy many more technologies need to be developed.

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