Browsing Tag Forms Of Energy

With the world slowly moving to the much-dreaded energy crisis, it is important that we reduce our dependency on non-renewable sources of energy. Non-renewable sources being renewable are about to get extinct. Renewable energy solutions refer to those energy solutions that can keep churning energy without exhausting the resources. Three types of energy solutions fall into the category of renewable energy solutions: solar energy solutions, hydro energy solutions, and wind energy solutions.

Solar energy solutions: The sun’s energy is the most abundant energy available on earth. Make use of this free energy. You can employ solar power solutions at home. This will not only cut down power bills but also help you contribute to a greener world. Solar power solutions comprise of solar cookers, solar heating systems, solar lighting systems, solar dryers etc.

The sun has always been a source of heat energy and light energy. With the advancement of technology, the sun’s energy can be used to create other forms of energy.

The solar energy systems have many advantages apart from being cost-effective and environment-friendly. They are low on maintenance thus saving your time and effort. Also, solar systems give you a return on investment very soon, thus making the systems free after some time. Cooking with solar energy is also considered extremely healthy. Families have started employing solar energy as a power solution at their homes.

Hydro energy solutions: The hydro energy or water energy is an effective renewable energy. One can convert the hydro energy into electrical energy to run vehicles and various electrical appliances. Hydro energy is typically generated on a large scale. It has been estimated that 90 percent of the electrical energy produced by renewable resources is produced solely by hydro power. Dams are built to help generate electricity by tapping the water power.

There have been some concerns about using this energy because it is supposed to adversely affect the water-borne flora and fauna.

Wind energy solutions: Windmills were in existence even in the years before the birth of Christ. They helped tow boats and pump water. Eventually, post-industrialization, they became a source for generating electricity.

Windmills and wind turbines have never been passé. Wind energy can help generate tonnes of megawatts of electricity. When employed at individual estates, it can help do away with conventional power sources. An excellent renewable source of energy, the wind energy will go a long way in promising a good future to generations to come.

Make power at home with solar and wind energy to eliminate your power bill. Get our complete guide at www.earth4energy.com

What Are The Types Of Renewable Energy?

What is Renewable Energy?

Renewable energy uses energy sources that are continually replenished by nature—the sun, the wind, water, the Earth’s heat, and plants. Renewable energy technologies turn these fuels into usable forms of energy—most often electricity, but also heat, chemicals, or mechanical power.

Why Use Renewable Energy?

Today we primarily use fossil fuels to heat and power our homes and fuel our cars. It’s convenient to use coal, oil, and natural gas for meeting our energy needs, but we have a limited supply of these fuels on the Earth. We’re using them much more rapidly than they are being created. Eventually, they will run out.

And because of safety concerns and waste disposal problems, the United States will retire much of its nuclear capacity by 2020. In the meantime, the nation’s energy needs are expected to grow by 33 percent during the next 20 years. Renewable energy can help fill the gap.

Even if we had an unlimited supply of fossil fuels, using renewable energy is better for the environment. We often call renewable energy technologies “clean” or “green” because they produce few if any pollutants. Burning fossil fuels, however, sends greenhouse gases into the atmosphere, trapping the sun’s heat and contributing to global warming. Climate scientists generally agree that the Earth’s average temperature has risen in the past century. If this trend continues, sea levels will rise, and scientists predict that floods,

heat waves, droughts, and other extreme weather conditions could occur more often.

Other pollutants are released into the air, soil, and water when fossil fuels are burned. These pollutants take a dramatic toll on the environment—and on humans. Air pollution contributes to diseases like asthma. Acid rain from sulfur dioxide and nitrogen oxides harms plants and fish. Nitrogen oxides also

contribute to smog.

Renewable energy will also help us develop energy independence and security. The United States imports more than 50 percent of its oil, up from 34 percent in 1973. Replacing some of our petroleum with fuels made from plant matter, for example, could save money and strengthen our energy security.

Renewable energy is plentiful, and the technologies are improving all the time. There are many ways to use renewable energy. Most of us already use renewable energy in our daily lives.

Bioenergy

Bioenergy is the energy derived from biomass (organic matter), such as plants. If you’ve ever burned wood in a fireplace or campfire, you’ve used bioenergy. But we don’t get all of our biomass resources directly from trees or other plants. Many industries, such as those involved in construction or the processing of agricultural products, can create large quantities of unused or residual biomass, which can serve as a bioenergy source.

Biofuels

Biomass can be converted directly into liquid fuels, called biofuels. Because biofuels are easy to transport and possess high energy density, they are favored to fuel vehicles and sometimes stationary power generation. The most common biofuel is ethanol, an alcohol made from the fermentation

of biomass high in carbohydrates.

The current largest source of ethanol is corn. Some cities use ethanol as a gasoline additive to help meet air quality standards for amounts to 50,000 times the energy of all oil and gas resources in the world. In the United States, most geothermal reservoirs are located in the western states, Alaska, and Hawaii. GHPs, however, can be used almost anywhere.

Biobased Products

Biomass—corn, wheat, soybeans, wood, and residues—can also be used to produce chemicals and materials that we normally obtain from petroleum. Industry has already begun to use cornstarch to produce commodity plastics, such as shrinkwrap, plastic eating utensils, and even car bumpers.

Commercial development is underway to make thermoset plastics, like electrical switch plate covers, from wood residues.

Geothermal Energy

The Earth’s core, 4,000 miles below the surface, can reach temperatures of 9000° F.

This heat—geothermal energy—flows outward from the core, heating the surrounding area, which can form underground reservoirs of hot water and steam. These reservoirs can be tapped for a variety of uses, such as to generate electricity or heat buildings. By using geothermal heat pumps (GHPs), we can even take advantage of the shallow ground’s stable temperature for heating and cooling buildings.

Solar Energy

Solar technologies tap directly into the infinite power of the sun and use that energy to produce heat, light, and power.

Wind Energy

For hundreds of years, people have used windmills to harness the wind’s energy. Today’s wind turbines, which operate differently from windmills, are a much more efficient technology.

Wind turbine technology may look simple: the wind spins turbine blades around a central hub; the hub is connected to a shaft, which powers a generator to make electricity.

However, turbines are highly sophisticated power systems that capture the wind’s energy by means of new blade designs or airfoils. Modern, mechanical drive systems, combined with advanced generators, convert that energy into electricity.

Ocean Energy

The ocean can produce two types of energy: thermal energy from the sun’s heat, and mechanical energy from the tides and waves.

Ocean thermal energy can be used for many applications, including electricity generation. Electricity conversion systems use either the warm surface water or boil the seawater to turn a turbine, which activates a generator.

Hydrogen

Hydrogen is high in energy, yet its use as a fuel produces water as the only emission. Hydrogen is the universe’s most abundant element and also its simplest. A hydrogen atom consists of only one proton and one electron.

Despite its abundance and simplicity, it doesn’t occur naturally as a gas on the Earth.

The news is always buzzing with information about renewable energy and how it is becoming increasing popular. What is renewable energy exactly? The actual definition of renewable energy is any form of energy that does not “run out,” and is sustainable. Solar energy is renewable energy. Wind and water energy is as well. Even the geothermal energy found deep underground is referred to as renewable energy. These forms of energy are not exhaustible and are abundant in nature. Fossil fuels, on the other hand, are not renewable and can eventually be exhausted.

The Problems with Fossil Fuels

Fossil fuels take millions of years to create. These are a form of stored energy that is created when plant and organic matter decay. It’s a very unique type of geological condition. However, when they are gone, they are gone forever. This is one of the reasons why it is so important to implement renewable energy sources. The main advantage of renewable energy is that it can really power our entire society indefinitely. The key is to integrate renewable energy sources into our lives now, while there are still fossil fuels available. Once the world becomes dependant on this type of energy, it won’t need the fossil fuels to survive.

Cleaner Energy Sources Are Available Now

Another huge advantage of renewable energy is that it is much cleaner to produce and utilize than fossil fuels. With less pollution, there will be fewer health concerns relating to the environment and lower health care costs. Many experts believe that pollution is the cause of many of the terminal illnesses today. Harmful emissions from vehicles and smoke stacks will no longer be an issue. Solar, wind, and water energy does not produce the waste or the poisons that are found throughout our world due to the use of fossil fuels.

Energy Monopolies Will Dissolve

One advantage of renewable energy that many people do not consider concerns the way the energy is distributed throughout the world. Monopolies on energy stores will be a thing of the past, as countries that once were completely dependant on foreign oil can become independent.

More Control For Homeowners

Homeowners will also have more control of their own energy bills. Wind turbines, solar panels, and other renewable energy sources will reduce their dependence on the grid. It’s quite possible that entire cities will soon have their own power generated only by using renewable energy sources.

Once renewable energy is the source for all means of travel, there will be no price gouging at the local gas pumps or unexplainable increases in crude oil . One advantage of renewable energy is that it will be used to power vehicles in the future, negating the need for gasoline.

A Few Final Thoughts

The advantage of renewable energy falls into many different facets. It’s not just one area of our life that will be improved. Over the next few decades, the world’s dependence on fossil fuels will continue to decrease, creating a much healthier planet. The next generation will ultimately benefit from renewable energy and isn’t that what’s most important?

There are many energy sources today that are extremely limited in supply. Some of these sources include oil, natural gas, and coal. It is a matter of time before they will be exhausted.

Estimates are that they can only meet our energy demands for another fifty to seventy years. So in an effort to find alternative forms of energy, the world has turned to renewable energy sources as the solution. There are many advantages and disadvantages to this.

Renewable energy sources consist of solar, hydro, wind, geothermal, ocean and biomass. The most common advantage of each is that they are renewable and cannot be depleted. They are a clean energy, as they don’t pollute the air, and they don’t contribute to global warming or greenhouse effects. Since their sources are natural the cost of operations is reduced and they also require less maintenance on their plants. A common disadvantage to all is that it is difficult to produce the large quantities of electricity their counterpart the fossil fuels are able to. Since they are also new technologies, the cost of initiating them is high.

Solar energy makes use of the sun’s energy. It is advantageous because the systems can fit into existing buildings and it does not affect land use. But since the area of the collectors is large, more materials are required. Solar radiation is also controlled by geography. And it is limited to daytime hours and non-cloudy days.

Wind energy uses the power of the wind to produce electricity. Although it is the largest job producer, it is reliant on strong winds. Wind turbines are large and, although you can use the area under them for farming, many consider them unattractive looking. They are also very noisy to operate. In addition, they threaten the wild bird population.

Hydroelectric energy uses water to produce power. This is the most reliable of all the renewable energy sources. On the down side, it affects ecology and causes downstream problems. The decay of vegetation along the riverbed can cause the buildup of methane. Methane is a contributing gas to greenhouse effect. Dams can also alter the natural river flow and affect wildlife. Colder, oxygen poor water can be released into the river, killing fish. And the release of water from the dam can cause flooding.

Geothermal energy uses steam from the Earth’s ground to generate power. It uses smaller land areas than other power plants. They can run 24 hours per day, every day of the year. Disadvantages are that it is very site specific and, along with the heat from the Earth, it can also bring up toxic chemicals when obtaining the steam. Drilling geothermal reservoirs and finding them can be an expensive task.

Biomass electricity is produced through the energies from wood, agricultural and municipal waste. It helps save on landfill waste but transportation can be expensive and ecological diversity of land may be affected. In addition, its process needs to be made simpler.

Ocean energy is a clean and abundant energy form. It does, however, have high costs. Ocean thermal energy also requires close to a forty degree Fahrenheit difference in water temperature year round. In addition, construction and laying pipes can cause damage to the ecosystem.

There are many advantages to the use of renewable energy sources. There are also some disadvantages. The fact is energy demands will continue to increase. Through research and development, as well as, new technologies, the hope is many of the disadvantages of renewable sources of energy can be eliminated and we can successfully incorporate it into our power supplies.

Renewable energy is not a new concept. While it may appear to be a rather fashionable topic of conversation in certain circles, renewable energy initiatives have been with us since the dawn of man. There is some debate about the accepted definition of renewable energy, but it can be loosely defined as a form of energy that is essentially inexhaustible. Furthermore, the resource is continually replenished by various natural processes identifiable in the natural world.

One key distinction to make when discussing the concept of renewable energy is that of sustainability. One could make the argument that, in the long term, fossil fuels are a renewable energy resource. While the logic stands on its own, this is a failed notion. The central difference between fossil fuels and other forms of renewable energy is that fossil fuels are being depleted at a rate faster than they can be replenished. For this reason, fossil fuels cannot be considered truly renewable. They are simply not sustainable, due to the accelerated rate of consumption.

Some of the more popular renewable energy resources include sunshine, water, and wind. Solar energy refers to the energy that is collected from sunlight. This form of energy is captured using a photovoltaic array, more commonly known as a solar panel. The solar radiation is captured by the photovoltaic array and converted to direct current (DC) electricity. From there, the direct current electricity must be converted to alternating current (AC) for use in most applications. The converted electricity is then stored in a battery for use at a later date.

There are also various forms of energy that exist in water. One of the most commonly acknowledged is that of hydroelectric energy, but there are a number of others including tidal power and ocean thermal energy conversion. Hydroelectric energy generally employs the use of a dam, wherein the energy of the water flow is captured and used to power a turbine. The turbine then generates a supplementary form of electricity. Tidal power attempts to make use of the natural energy potential of tidal activity in the oceans and seas. In simple terms, the high tide is captured and fed through a turbine to generate electricity. Ocean thermal energy conversion attempts to exploit the variances in water temperature, from the warmer surface water to the cooler deep water, resulting in a cyclic heat engine.

Wind power is one of the oldest accepted forms of renewable energy. It has been used for centuries as a source of power, dating back to the creation of the sailboat. The innate potential of wind power was realized a number of years later in the form of a wind mill. In this instance, the kinetic energy of wind is used to drive a turbine which, in turn, generates electricity. Wind energy possesses immense potential for sustainable energy generation, and a number of large-scale development projects are currently underway throughout the world.

One of the greatest challenges facing humanity is to discover a way to reduce our reliance on unsustainable resources, like fossil fuels. Most, if not all, modern industrial societies rely far too greatly on fossil fuels and increasingly, this is becoming an undeniable reality. Wars of conquest are being waged to secure what is left of the world’s oil reserves. If only the resources of the powerful nations were channeled into developing sustainable energy alternatives, as opposed to driving a war machine bent on dominating the oil markets. Our modern way of life is going to undergo some difficult times in the very near future, if this reality continues to be ignored. Ask yourself what you can do to make a difference. You might be surprised at what you can accomplish.

Record high prices at American gas pumps and continued trouble-brewing in the Middle East, Nigeria, and other areas of importance to the oil-driven economy have made it clear to Americans that we are in need of developing many new avenues of energy supply and production. In short, we need to reduce our dependency on oil, for it is ultimately finite and, frankly, the cheap sources of oil (not all oil-just the stuff that is cheap to remove from the earth) are running out. Energy consultants and analysts are insistent that cheap oil has “peaked” or is very soon going to peak. What this means for us is an expensive future-unless we can find new sources of powering our mechanized and electronic civilization, new sources which are alternatives to oil.

We must also switch to alternative forms of energy because our present forms are too damaging to the atmosphere. While this write does not believe that the global warming trend is much, if at all, sustained by the activities of mankind (in short, it’s a natural cycle and there’s nothing we can do about it except prepare for the effects of it), we certainly do contribute at present to the destruction of the environment and to things like air pollution with our energy sources as they are. Coal is another source of energy that we need to wean ourselves off of-again, it is finite, and it is filthy, and the mining of it is dangerous and environmentally disruptive. We can also explore new, streamlined methods for producing electricity that we presently generate so much of via hydro-power so that we are less disruptive of the environment when we have need of constructing things such as large dams.

Developing nations which have turned industrialized in recent decades especially will need the benefits of alternative energy research and development, for they are presently doing much more environmental damage than the United States. The United States, Japan, and some European nations have been implementing studies into and programs for the development of alternative energy sources, and are therefore already leading the way in doing less environmental damage. The developing nations such as China and India need to look to Japan and the West as examples of what research and development to give government backing and private investment currency to. We could also add great robustness to our own economy by being at the forefront of such alternative energy sources development and then marketing the technologies and services to nations like India, China, Brazil, and so on and so forth.

Biofuels from things like “supertrees” and soybeans, refined hydroelectric technology, natural gas, hydrogen fuel cells, the further building of atomic energy plants, the continued development of solar energy photovoltaic cells, more research into wind-harnessed power-all of these are viable energy sources that can act as alternatives to the mammoth amounts of oil and coal that we presently are so dependent on for our very lifestyles. The energy of the future is green.

One of the most natural forms of energy that you have in existence today is geothermal energy. This energy comes from the heat present within the earth and it can be employed in a variety of different forms. The origins and the application of geothermal energy are explored in this article.

Geothermal energy is the Earth’s heat. It is the end result of the fusion of dust and gas which happened about four billion years ago.

Deep inside the earth’s core and approximately about 4,000 miles deep, the temperature is about 9,000 degrees Fahrenheit. Geothermal energy has been used for everything from bathing to relaxation and cooking as well as heating. The first geothermal generator was created in Italy at the beginning of the 20th century. In 1912 the United States followed with their attempt at creating geothermal power with The Geysers in California. The energy is now produced in over 21 countries of the world.

You can find geothermal energy deep in the ground. The heat at the core of the Earth flows outwards. When it flows the heat is transferred to surrounding rock layers known as the mantle. When temperatures and pressures increase, the rock then melts and becomes magma. Magma then moves to the surface of the earth and takes along the heat with it. If magma gets to the surface of the earth it becomes lava otherwise it stays below the earths crust and heats up the rocks and surrounding water. These temperatures can get as high as 700 degrees Fahrenheit. When water travels to the surface it becomes hot springs or geysers. Most of this water however gets trapped in fractured and porous rocks which are known as geothermal reservoirs. The heat also becomes a form of energy.

Hot water or steam that comes from a reservoir can easily exert a force that spins a turbine connected to the generator in order to produce electricity. Cooled water is then returned to the reservoir in order to reheat. In order to determine other locations of geothermal underground waters further research, exploration and testing are required. When the necessary spots have been located, drilling can then be carried out in order to create the production wells that supply water to the surface of the earth in order to generate power in geothermal plants.

The costs of constructing geothermal plants and geothermal wells are quite high, the costs of producing electricity tends to be much less over time. The fuel is reliable and stable and has no need for transportation. White smoke that is seen over geothermal power plants isn’t smoke but steam. During operations however, hazardous gases may be brought up from the underground.

The United States is the biggest global producer of geothermal energy. Unfortunately the global interest in geothermal energy is low and only accounts for a small portion of the global energy supply. Research and experience will produce new means and technologies that will aid you in accessing geothermal energy. Renewable energy sources must become the major source of energy in the years to come. Fossil fuels are constantly being depleted and reducing the quality of air that we enjoy. Over time geothermal energy might become much more attractive. Reduction in the costs of implementation of this energy source might in time lead to a better future for this source of renewable energy.

Utilizing solar energy or the power coming from the sun’s rays has many benefits. Let us take a closer look on each of them.

•Solar energy saves money.

In 2006, we saw the highest jump on residential electric rate. In some areas of the country, as much as 60% increase was seen. Many experts agree that the trend will likely to continue in the years to come. This means that you have to pay larger sum of cash to sustain your monthly electric consumption. But if you produce your own power, you can prevent paying the high cost of energy – especially now when energy prices are very unstable.

On a larger scale, if American households switch to other types of alternative energy including solar energy, the nation’s spending on imported oil will greatly decrease.

•Solar energy is environment-friendly.

The issue of global warming will not go away. So if you want to do your part to save this planet, drawing your power requirement from the sun will make a great difference.

Solar energy is sustainable and renewable unlike gas, coal and oil that most utility companies use. It does not produce sulfur dioxide, nitrogen oxide, mercury or carbon dioxide as byproducts so it doesn’t pollute the air. Since it doesn’t emit greenhouse gases, it doesn’t contribute to global warming.

Using solar energy reduces demand for fossil fuel and reduces the nation’s dependence on foreign energy sources.

•Government gives incentives to those who use alternative form of energy.

Many are discouraged to install solar electric systems because of the initial cost of the project. But, some states like California offers federal tax credits as much as $2000 and up front rebate that covers 20% to 30% of the total system cost. These offers are relatively good considering the substantial increase of energy cost in recent years.

Note: Due to the increasing number of households who want to switch into alternative forms of energy, the incentive levels decline. Check with your state government the rates it offer if you are going to make a switch.

•Solar power systems are dependable and require little or no maintenance.

Photovoltaic (PV) cells that are used in solar power systems are capable of providing electricity for a very long time. Originally developed for space use, PV cells require little or no maintenance. The proof is, most satellites orbiting earth use PV cells that are in harsh environment, not maintained but are still working properly. The manufacturers of solar panels can give as much as 25-years warranty. Talk about quality and dependability.

•Solar energy helps improve the quality of life.

Saving the planet one watt at a time if done collectively will help reduce the effects of global warming. It will also reduce demand on coal, oil or gas power plants that emit harmful gases. In turn, using solar power helps clean the air and improves the quality of life of every individual.

•Solar energy can reduce demands for other non-biodegradable materials.

For utility companies to distribute power to every home, they need materials necessary in building these systems of power lines like electric cable and steel. These require energy to produce and contribute to greenhouse gases emissions. If we can cut the demand for power plant and switch into alternative energy, we can also reduce the demand for these materials and help the environment.

Harnessing the power of the sun’s ray to create energy to power our house is very appealing. But the question is, “Is everything about solar energy good?”

Looking at the current price of fossil fuel-based electricity, it is quite impractical to convert into solar energy system. However, with the growing concern on the state of the earth, there is really a need to find other means of energy aside from what power plants are using right now. Where do you place yourself?

Whether you are an advocate of clean energy or simply care about where your finances go, looking at the pros and cons of residential solar energy system will help you decide on whether to convert or not.

Pros

Solar energy is free. Did you know that the earth absorbs 174 pettawatts of solar radiation? This means that we have more than enough source of free energy to power every house in the world. Unfortunately, most of our energy is still drawn from oil, gas and coal. But in recent years, there is a steady increase of demand for alternative and renewable energy like solar power. It is estimated that the demand for alternative sources of energy will increase by 53% between 1999 and 2020.

Solar energy is clean, renewable and sustainable. Because the energy created from the sun’s rays does not produce byproducts like those from fossil fuel power plants (sulfur dioxide, nitrogen oxide, mercury or carbon dioxide), it does not contribute to pollution. Accordingly, the increase in the use of solar energy and other alternative forms of energy will decrease the demand for greenhouse gases-producing power plants.

The price of photovoltaic cells is steadily decreasing. The demand for solar panels has risen by 57% in the United States in 2007 and is steadily increasing on a monthly basis. The increase in demand results to the improvement of solar technology as a whole. The prices of photovoltaic cells have declined on the average of 4% every year over the past 15 years.

Solar panels can be installed on most rooftops, eliminating the problem of finding a suitable place for installation. Solar panels require little or no maintenance. The original photovoltaic cells technology is used for most satellites orbiting our earth today which are not maintained at all. Many solar panel manufacturers give 25 to 40 years warranty on their products.

Because most areas of the country receive a substantial amount of sunlight throughout the year, solar panels can be installed anywhere.

Many states in the country give tax credits and rebates to households who want to install solar energy system. Check with your state government the cost of these incentives.

Cons

While the prices of PV cells are in constant decline, the cost of installation is substantially high compared to the current electric cost. But the good thing is, after your initial cash out, you don’t have to pay every month on electric bills for the rest of your life.

On areas cities and areas with heavy pollution problem, solar energy may not work as fine. Weather can also affect the efficiency of solar energy. If it is raining, overcast weather or if there is a hurricane, the solar panels’ efficiency is decreased.

You are only producing energy during day time.

These are general pros and cons you might encounter when considering the conversion to solar energy system. It would be best if your decision is based on location, cost, budget, rebates, tax credits and practicality.