Showing posts with label Alternative Energy. Show all posts
Showing posts with label Alternative Energy. Show all posts

Saturday, May 16, 2009

Propane Tanks Are One Aspect of Building an Alternative Energy System for Your Home


By Simon Harris

The use of propane has greatly increased over the years. There are several factors for this. In some cases natural gas line are not available in certain areas. There are no other options that are available. In some cases propane has become of the fuel of choice. This is especially true when home owners want to avoid an all electric home and cut back on some of the cost of using other fuel alternatives. If you decide to use propane as a fuel source for your home you must consider propane tanks and all of the details that are associated with installation.

Of course propane tanks are necessary to hold and store your fuel source. They are available in many different sizes but all of the construction is just about the same. Most of them are stored above the ground because it is less costly and provides easy access. You can store them under ground but it will cost you more money and the access to the tank becomes a problem in some cases. The homeowner can purchase a tank on average from 500 gallons to 1000 gallons. Keep in mind that a tank can not be filled to capacity. You must leave room at the top for expansion of the propane gas. A good rule to follow is to fill it only to eighty percent of capacity. This will ensure safety and security for your tank.

Make sure to contact your local gas supplier when thinking about using propane. They will be able to provide you will solid and accurate details on the system you will need for propane gas usage. They will give you advice on the size of propane tanks and what you need for your home according to what you are going to use for your system. These professionals offer the best advice as to a plan of action and can provide you with the help you need.

There is no doubt that propane is a good source of fuel and provide many homes with an alternative source of power and energy. Putting in a propane system for your home is not difficult and it is not unreasonable in cost. You can investigate the possibilities for your home with a little research and by talking with your local gas supplier.

Simon Harris writes about Propane Tanks at http://www.propane-prices.org/

Friday, May 8, 2009

Alternative Energy - Hydrogen For Better Fuel


By Steven D. Foster

Some people believe that our energy source in the world will soon be depleted. Our massive use of oils and gasoline will eventually diminish not only our lives but also our environment. The oil companies are sending us a clear message that we will always be dependent on their resources and will never exist without it. Do we even know anything about alternative energy? Have we ever considered how important and helpful alternative energy can be? Why are we so reliant in oils and gasoline to run our machines, industries, and markets?

On February 24, 2009, The President of the United States of America, Barack Obama addressed a speech to the joint session of Congress about the use of alternative energy. He said that "To truly transform our economy, protect our security, and save our planet from the ravages of climate change, we need to ultimately make clean, renewable energy the profitable kind of energy."

What is alternative energy?

Basically the term alternative energy is a renewable energy intended to substitute the traditional fuel sources of our world. It is also a fundamental way to relieve the undesirable consequences derived from the use of oils, gasoline, nuclear energy, and fossil fuels. The adverse effects caused by these traditional fuel sources are:

Global Warming. Release of High Carbon Dioxide in the atmosphere. Obscure disposal of harmful Radioactive Waste. And many more unwanted outcomes to our planet.

Alternative energy is the best solution for the unwanted effects of these traditional fuel sources. And the role of "Hydrogen Fuel" as an alternative energy source is very important in achieving positive changes for our environment. It will also provide us sufficient energy sources that will not only power our machines but will also take us to the next significant step in saving our planet.

What is Hydrogen?

Hydrogen is the third most abundant element of the universe. It is a chemical element with an odorless, tasteless, and colorless characteristic. Hydrogen is a highly flammable diatomic gas which has the lightest weight from to all the elements in the world.

Hydrogen Fuel

When we use hydrogen as a fuel, it burns more cleanly than a regular gasoline. It does not release harmful carbon dioxide that is detrimental to our atmosphere. Here are some positive attributes of a Hydrogen Fuel:

It can be made from different plentiful resources such as coal, natural gas, biomass and water. It can also be created by transferring electrical current through water with a process called electrolysis. When used in an engine or motor, it can emit no harmful gasses. The only waste it produces is water vapor. It has the highest content of energy compared to other kinds of fuels. Disadvantage of a Hydrogen Fuel: Producing Hydrogen Fuel takes a sizeable amount of energy from fossil fuels, and may tend to be more expensive than using traditional kinds of fuels. Some believes that Hydrogen Fuel production is not too economical today.

The Future of Hydrogen Fuel A handful of economist believes that by producing hydrogen fuel from renewable energy like solar and wind power, we may actually lower the cost of making hydrogen fuel. This can also pave the way in producing more alternative energy to power our vehicles, industries and cities. Hydrogen, as an alternative energy For Better Fuel, can actually be our hope for a better and more environment friendly future.

Thursday, March 19, 2009

How to Get Free Alternative Energy?


By Atul B Tanna

The major decision regarding this entire deal of things that we are going to describe is going to center on the question- do I want my home to run on solar power or not. If you have answered the question in the affirmative then we can proceed with our remaining set of recommendations. Choose from the array of solar strategies and decide how you want your home to be 'solarised'? Your choice can be guided by the quantities of solar power you would require to the money it will cost you to the nature of the solar plan you adopt keeping in mind the cost ruction and architecture of the house. A sun space is an additional requirement which is a patch of space you need to find inside your house to receive sunlight. Not only does this space help reduce power bills it also adds to the decor of the house.

A sun space has to be constructed in a way in which it receives the heat and makes productive use of it. They are amenable to the design suited to any and every architecture. The sun space serves to satisfy from 10 to 50% percent of the heating requirements of the house. The sun space is ruled by three chief considerations- the size, the glazing and the location of the sun space inside the house.

Specific solar units like sun spaces are now designed on special software with which you can customize your sun space. Once you have decided on the location you need to think of assize which is perfect for this space. You could have one which is very big but it might be so deeply located inside your house that the back wall doesn't get any sun heat. The depth at which you want your sun space to be located inside the house depends on the height of the south facing windows and outlets and the nature of roof glazing you have. The angle of the sun rays and the shades can also be factors in deciding the location of the sun space inside the house.
The glazing is particularly important, as we have told you. Given the best of cases the glazing will extract heat and every square feet of glazing can take at least enough heat to heat two square feet on the sun space. As a result the glazing on the south facing walls will be comprehensive and it need not be so for the east and west walls. An angular specification of 60 degrees is required to let the glazing function properly. Fixed glass is usually used for glazing. Burt other constituent material is often cheaper. Windows if fixed certainly curtails the amount of heat lost especially if they have wooden frames. With a metal frame you have to keep in mind to find the kind of metal frame which allows for thermal absorbers between the inner and the outer sides. The best option would be windows with double insulation.

The distribution of the heat absorbed by glazing can be helped by the usage of fans. The vents could have small fans which let the heat distribute. This makes use of convection currents. The usage of things like pre cast concrete sub-floors with a core which is used to absorb the heat makes the process more energy efficient. Fans extract the heat from the concrete and let the remaining heat stay for later use. The underground rock bed system can be used for similar purposes.

Alternative energy sources if creatively established can do a world of good to your power bills and the environment and at the same time can make your home an independent energy source. So go ahead and try them with a little knowledge about solar energy for best results.

Saturday, January 10, 2009

The Secret to Alternative Sources of Energy

By Weldon Peterson

There are two different paths that you can take when taking a plunge into the world of alternative energy. Follow the beaten path and you will need to spend thousands of dollars on a professionally installed green energy system. But, you could also take the one less traveled by. Take this path and you will learn the secret to alternative sources of energy. And for the small price of your undivided attention I am willing to reveal this secret to you. With it you will enjoy a lifetime of savings as well as a life dedicated to improving our environment.

The secret to alternative energy is making it yourself. Yes, that is correct. In order to be most successful with using alternative sources of energy you must make your own natural energy system. Now, before you dismiss this statement which I have presented to you, first let me explain in detail how easy it is to make your own natural power source.

Making your own alternative power source is incredibly simple because there are many resources that are now available in the area of DIY green energy systems. In fact, there are even alternative power guides that outline every single step if the process of building a natural power system. Just by finding a reliable green power guide you will be able to build your very own natural energy system in just two days. And in just two days you will be on your way to saving hundreds of dollars every month!

There is one small catch though. Finding a reliable DIY green energy guide can be extremely difficult as their are many garbage products out there. Believe me, I've spent hundreds of dollars trying to find just the right one. If you want to start saving hundreds of dollars every month but don't want to have to go through the hassle of finding a reliable guide then click the link below. Just by clicking the link below you will have already taken the first step in saving tons of cash every month.

Source

Tuesday, January 6, 2009

Palm Oil BioDiesel

By: Shana Shane

100% CRUDE PALM OIL REFINED (RBD) PALM OIL PALM OLEIN & PALM STEARIN are EXCELLENT VEGETABLE OILs THAT CAN BE USED TO PRODUCE YOUR BIODIESEL!

Palm Oil Biodiesel is produced by a reaction of a palm oil or animal fat with an alcohol such as methanol or ethanol in the presence of a catalyst to yield mono-alkyl esters and glycerin, which is removed.

With the increase in awareness and importance attached to environmental issues such as global warming, more environment-friendly fuels are being developed as alternatives to fossil fuel. One such fuel, which has been gaining prominence in recent years, is biodiesel. Clean and renewable, biofuel has been touted as the answer to the issue of the diminishing of energy reserves.

The advantages of palm oil biodiesel, drawn from the field trials are no modification of the engines is required, good engine performance, cleaner exhaust emission and comparable fuel consumption in comparison with the petroleum diesel.

6 REASONS WHY PALM OIL IS BETTER FOR BIODIESEL:
(i) Abundantly available and stable supply.
(ii) Crude Palm Oil can be broken down into many more useful fractions.
(iii) Cheaper than all oils especially Soybean Oil Did I mention, CHEAPER!
(iv) Already being used domestically
(v) Reduces our dependency on petroleum diesel
(vi) Biodegradable Eliminates harmful emissions

What is Palm Oil biodiesel?
Palm Oil Biodiesel is the name of a clean burning alternative fuel, produced from Palm Oil. Palm Oil Biodiesel contains no petroleum, but it can be blended at any level with petroleum diesel to create a biodiesel blend. It can be used in compression-ignition (diesel) engines with little or no modifications. Palm Oil Biodiesel is simple to use, biodegradable, nontoxic, and essentially free of sulfur and aromatics.

How is Palm Oil Biodiesel made?
Palm Oil Biodiesel is made through a chemical process called transesterification whereby the glycerin is separated from the Palm oil. The process leaves behind two products -- methyl esters (the chemical name for palm oil biodiesel) and glycerin (a valuable byproduct usually sold to be used in soaps and other products).


Is Palm Oil Biodiesel the same thing as raw vegetable palm oil?
No! Fuel-grade palm oil biodiesel must be produced to strict industry specifications (ASTM D6751) in order to insure proper performance. Palm Oil Biodiesel is one of the few biodiesels to have fully completed the health effects testing requirements of the 1990 Clean Air Act Amendments. Biodiesel that meets ASTM D6751 and is legally registered with the Environmental Protection Agency is a legal motor fuel for sale and distribution. Raw Palm Oil cannot meet biodiesel fuel specifications, it is not registered with the EPA, and it is not a legal motor fuel.

For entities seeking to adopt a definition of biodiesel for purposes such as federal or state statute, state or national divisions of weights and measures, or for any other purpose, the official definition consistent with other federal and state laws and Original Equipment Manufacturer (OEM) guidelines is as follows:

Palm Oil Biodiesel is defined as mono-alkyl esters of long chain fatty acids derived from Palm Oil vegetable oils which conform to ASTM D6751 specifications for use in diesel engines. Biodiesel refers to the pure fuel before blending with diesel fuel. Biodiesel blends are denoted as, "BXX" with "XX" representing the percentage of biodiesel contained in the blend (ie: B20 is 20% biodiesel, 80% petroleum diesel).

Why should I use palm oil biodiesel?
Palm Oil Biodiesel is better for the environment because it is made from renewable resources, i.e. Palm Oil and has lower emissions compared to petroleum diesel. It is less toxic than table salt and biodegrades as fast as sugar. Since it is made from renewable resources i.e. Palm Oil, its use decreases our dependence on foreign oil and contributes to our own economy.

Where do I get Palm oil biodiesel?
It can be purchased directly from biodiesel producers and marketers, petroleum distributors.

What is biodiesel?

Very often, a broad, general description is used to define biodiesel in a way that is easy to understand by the general public. However, when these broad descriptions are adopted by an authoritative body as a formal definition, they can include a wide range of experimental fuels that are not biodiesel. The term "biodiesel" has a specific, technical definition that has been agreed to through a painstaking process by members of industry and government which has received full approval by the American Society of Testing and Materials (ASTM), the premier standard setting organization for fuels and fuel additives. That definition is used for purposes such as alternative fuel designation, EPA registration, or other regulatory purposes. Nonetheless, this specific technical definition can be confusing to the general public.

General Definition of Biodiesel:
Biodiesel is a domestic, renewable fuel for diesel engines derived from natural oils like soybean oil, palm oil and which meets the specifications of ASTM D 6751.

Clarifying language to general definition:
Biodiesel can be used in any concentration with petroleum based diesel fuel in existing diesel engines with little or no modification. Biodiesel is not the same thing as raw vegetable oil. It is produced by a chemical process which removes the glycerin from the oil.

Technical Definition for Biodiesel (ASTM D 6751) and Biodiesel Blend:
Biodiesel, n--a fuel comprised of mono-alkyl esters of long chain fatty acids derived from vegetable oils or animal fats, designated B100, and meeting the requirements of ASTM D 6751.

Biodiesel Blend, n--a blend of biodiesel fuel meeting ASTM D 6751 with petroleum-based diesel fuel, designated BXX, where XX represents the volume percentage of biodiesel fuel in the blend.


Clarifying language to technical definition:
Biodiesel, as defined in D 6751, is registered with the US EPA as a fuel and a fuel additive under Section 211(b) of the Clean Air Act.

Thursday, January 1, 2009

Alternative Energy Solutions In A Time Of Power Crisis

By: Isabel Baldry

It is unofficial - but around the world many of us agree on one thing: it is very likely that there will be an energy crisis in the future. We all know energy is a big issue in the contemporary world, and we have been convinced that humanity is at a crucial crossroads in its history because we face an energy shortage. Many experts believe this problem can only be solved by the use of alternative energy solutions. By energy, I mean the fuel that drive our cars, give us electricity and enables us to enjoy modern amenities we feel so vulnerable without. Fossil fuels have been the prime source of energy for human society since the beginning of the industrial revolution. These fossil fuels have been the muscles, which have enabled us to progress and develop to such dizzying heights. We face a problem in the 21st century because our stocks and reserves of these fossil fuels are running low; this news is worsened by the fact that these reserves cannot be renewed. Many governments and private agencies have started promoting Alternative Energy Solutions to overcome the looming energy crisis caused by the depletion of the non renewal's sources of energy that all fossil fuels - coal, all oil and natural gas - represent. Alternative Energy Solutions include all prime movers that can use a renewable natural resource to produce energy. This may be wind, thermal energy from the earth, and wave action in the shores and solar energy from the sun. Alternative energy resources can also include new technology like fuel cells. However the primary fuel humanity has long depended on has been oil. We now know from our own projections that the oil reserves in the world are slated to be unviable by 2050. Simply put, the world is running out of gas! In addition, not to mention, time. The utilization of other forms of energy is therefore very important. When we speak of alternative energy, it usually means the production of electricity via the use of some natural and renewable resource. What are these renewables, one may ask. Someone else may extend this line of questioning and say: Are these renewable resources as efficient as the fossil fuels? Below are some answers. Wind energy is the word that comes to mind whenever people talk of renewable energy sources. Humans have harnessed the wind to drive machines since medieval times. In the 21st century we use wind turbines to produce electricity. As a source of power, wind is an excellent option. Wind turbines generate electricity by rotary motion that is caused by the airflow. Some of the negatives associated with wind energy and wind turbines lie in the unpredictability of wind. For example, no wind means the turbine does not rotate and electricity is not generated. Sites are another problem; rows and rows of wind turbines are just not feasible in a city of a few million people. The most important issue however lies in cost effectiveness, most power companies are still reluctant to invest in or buy their power from companies that use wind turbines. This is changing as governments around the world have started subsidizing power generation through alternative sources like wind. There are other possible sources of renewable energy; tidal energy uses the energy of the ocean and is an effective though rather geographically limited source of power, thermal energy from the earth taps geysers and other underground sources of heat. This is a very important source of energy in places like Iceland - it is also geographically limited in its suitability. Nuclear energy can be considered a potentially inexhaustible source of power. However, it could have many dangerous complications and most environmentalists fear its use. New technological innovations like fuel cells are still a long way off from truly becoming substitutes to the fossil fuel powered internal combustion engines that have driven us all this far down the road. Indeed looking at all the possible sources of alternate energy and especially renewable, wind and hydroelectric projects are the only two viable long term sources, solar power is a potentially huge alternative source of energy but it has a technological handicap-we do not posses the engineering expertise to make better solar cells. Solar cells are also very costly to produce and are not cost effective - even less so than wind. Given all the setbacks we currently are unable to overcome, it will still be some time yet before we can throw away the polluting but efficient, fossil fuel guzzling machines that we so fondly know as cars. The use of alternative energy sources is a very important area of research and demands humanity's attention. As soon as fuel supplies run out on us, we may have to go back to that ultimate transport machine to take us places: our legs.

Monday, December 1, 2008

The Top 3 Alternative Energy Sources

As each year pass, more and more people come into the world. Sometimes it seems as if the worlds natural sources are no longer enough to accommodate each and everyone. Scientists have a solution for this possible impending problem they came up with alternative energy sources
. 1. Hydrogen Slowly but surely, the hydrogen powered car is becoming popular nowadays. Even celebrities like Leonardo DiCaprio promote the use of this earth-friendly contraption. Hydrogens energy is perpetual in motion because it is an energy carrier. Its pretty much like a battery. Most electricity comes from fossil fuels that are found in plants. But if you get hydrogen using fossil fuels and stack up on the energy source, then you are utilizing renewable energy, making hydrogen from water via electrolysis. Picture this the wind is blowing and 4 units of its energy amounts to 1 unit of hydrogen energy. Of course, these problems result from treating hydrogen as an alternate energy source: its very seasonal there is a lot of moisture and it requires to be stored before it dries up from the surrounding gases limited supply of hydrogen hydrogen energy is not enough to accumulate the need of normal products stripping of biomass has a side effect to the soil But there is actually a good reason to why people turn to hydrogen energy. It prevents global warming that is resulted from fossil fuels. Natural gas energy releases nitrogen oxides and that is harmful to the atmosphere. 2. Solar We dont have to look too far in giving an example of a contraption that uses solar energy. A solar calculator just needs light in order for it to function. As for a bigger example of how solar energy is utilized, we look at the forms of solar energy that has become a source of alternate energy. Biomass is the fuels derived from wood and dry crop wastes. As we all know, the main component of the photosynthesis process is the sun. Because of this, biomass remains to be the largest form of alternate energy available in the US. Then theres wind power that is also the cheapest source of solar energy. The variety on the pressure between areas that is created by solar energy results to wind effects. Turbines then generate electricity in mountainous regions such as Southern Wyoming. Here the average wind speed is 21 miles per hour. Solar energy is similar to nuclear energy as recent studies show. Example is the power tower wherein a collection of solar energy forms this large field of mirrors that convert it to heat when it reaches a high temperature. This is an efficient generation of electricity. Realistically, the sun doesnt shine the whole day. It also has to set. So the solution to the question of What do you do when the sun goes down? is the construction of an auxiliary system that stores energy when the sun is nowhere to be seen. Heres where nature comes into play. The ocean is a natural reserve of solar power and thru thermal energy can be the auxiliary system after the sun has set. Example, in Wyoming, their auxiliary system holds back water at a hydroelectric plant and generates energy whenever the wind blows. Ran by turbines, this is a solar-powered energy that continues to work even at night time. 3. Nuclear For commercially produced energy, businessmen turn to nuclear power. It is released from nucleus. This is the reaction thru the solar fusion where atomic particles are fused together. It is also derived from fission wherein binding forces break and form an atoms nucleus. French physicist Henri Becquerel accidentally discovered nuclear energy in 1896. He found photographic plates in uranium compounds that behave like that of X-ray when exposed under sunlight. Nuclear power comes from the combination of thorium, plutonium or uranium or the combination of hydrogen into helium. Nowadays, the basic energy fact is that atoms of uranium produce fission of 10 million times the energy produced by the combustion of atom from carbon. Nuclear power plants use uranium that has been enriched. What comes to mind is the plant owned by Mr. Smithers in The Simpsons. Nuclear power generates about 34% of US electricity. Expansion of nuclear power naturally affects the politicking of a country. Studies show that developed nations are high in nuclear energy as opposed to those of the developing nations whose nuclear energy is close to non-existent.

By: Derek Marsh

Saturday, November 8, 2008

Some States Already Transitioning to Alternative Energy

By: John Kuzniar

Recently when asked "What is the best currency in the world to own right now?", billionaire Warren Buffet replied, "Not the u.S. dollar." It was recently reported that supermodel Gisele Bundchen refused to be paid in U.S. dollars, because of uncertainty over its strength. She instead, asked to be paid in euros. In his new music video for the movie "American Gangster," best selling rapper Jay-Z flaunts the euro, not the dollar, to showcase his wealth. The examples above speak volumes about what many people with money, lots of money, think about the value of today's dollar. And many of them are beginning to hedge their bets with respect to the dollar. But what does all of this have to do with renewable energy resources? If the dollar continues to be weak against other currencies, it will produce many unpredictable side effects. But one side effect that is almost certain to happen is a rise in the prices of traditional energy resources. All imports, but specifically oil and gasoline, will become more expensive. The days of $1.20 a gallon for gas are probably gone forever. Grid Parity and Energy Prices Grid parity is the point at which it becomes cheaper to produce your own electricity, from photovoltaic cells using solar power, than it is to buy it from power companies off of the electrical grid. As energy prices rise, more and more people will find themselves reaching grid parity. Until very recently, the prospect of a community reaching grid parity any time soon seemed like a remote possibility. However, as energy prices have risen, some places in the U.S. have already reached that point. As of 2007, Hawaii has reached grid parity with the peak charging rates. Parts of California, particularly Northern California, have reached gird parity as well. As energy prices continue to rise, in large part due to the dollars devaluation, we'll see many more communities reaching grid parity. But there is also an inverse price relationship happening with solar power and oil. As the price of oil slowly increases, the prices of photovoltaic cells are slowly decreasing. Companies are becoming more efficient at producing solar cells thus enabling them to be sold at lower price points. In addition, the solar cells themselves are becoming more efficient solar collectors, which let's the home or business owner save even more money. And, of course, other factors pushing us towards greater uses of solar cell technology are the looming worries of global warming and the pressing need to decrease greenhouse gasses being released into the atmosphere. Are corporations betting on solar power? One such company, SunPower, which makes photovoltaic panels for businesses, expects to pull in over one billion dollars in sales next year. Solar Power Inc. had revenues of over 8 million dollars in it's third quarter alone. Solar power companies in foreign countries such as Germany, Japan, and China have ramped up their solar power production facilities dramatically in the past few years. For the past several years the U.S. has been borrowing money with reckless abandon. We have a national debt of over 9 trillion dollars. Now, the rest of the world is slowly deciding that they no longer want to bankroll us. For us, that means a continued low valued dollar and increased energy costs.

Thursday, October 30, 2008

Renewable Power and Alternative Energy Advantages and Disadvantages

By: Steve D Evans

Renewable energy is the centerpiece of eco-energy planning. Yet all renewable energy sources are not created equal and some are far more sustainable in the long term than others. We will explore the available types of renewable energy considering the advantages and disadvantage as we go.

However are we all clear about the difference, such as it is between renewable energy and alternative energy. Alternative energy is all energy sources other than carbonaceous sources, whereas renewable energy is energy that is replaced almost as quickly as it is used by being part of the natural carbon cycle of the earth. Renewable fuels produce carbon dioxide but since the renewable source is always being replenished the energy use is merely interceding in the natural cycle.

Alternative energy sources encompasses all the renewable sources but also nuclear, and for example, energy from municipal solid waste (MSW) which - due to its source may not be strictly a renewable source. and new types such as hydrogen power from new energy conversion process

An example of a renewable fuel is wood which is renewed by the re-growing of the forest from which the tree was felled. Another prime example of this type of energy is solar power. Many governments are setting out to increase the use of renewable power. The increasing use of renewable energy is, for example, an integral part of the United Kingdom Government's longer-term aim of reducing CO2 emissions by 60% by 2050. In 2000 the Government set a target of 10% of electricity supply from renewable energy by 2010, and in 2006 that nation announced our aspiration to double that level by 2020.

Renewable energy is produced from sources that are replenished as they are used, such as the wind, water flowing in streams, rivers and seas, the sun and sustainably grown crops. In order to harness these sources and reduce our dependency on finite reserves of oil, coal and gas, renewable energy professionals need to understand the scientific principles of renewable energy technology and have the management skills to ensure that UK and international carbon emission reduction targets are met.

All alternative energy is best derived from inexhaustible sources such as wind, the sun, sea, or replaceable sources such as waste products and crops. Using sources of renewable energy should be viewed as a long-term method to tackle climate change, and will play an increasingly important part in helping reduce carbon emissions by 2050.

However, before we get really excited about the potential for renewable sources of power. Renewable energy is not all it's made out to be, it's not that cheap compared to conventional fossil fuel generating plants. Also, the production of enough renewable energy is also very hard to achieve rapidly. In comparison to a large fossil fuel power station oil, natural gas or coal each renewable power plant is really tiny. Literally thousands of large wind turbines, for example, are needed to replace just one coal, gas or oil fired power station.

The only real alternative to fossil fuels which is a well tested and mature technology, and can be built really quickly is nuclear energy.

Nuclear power should be considered "clean" and "green" when compared with fossil fuels. The carbon dioxide emissions from a nuclear plant are mostly during its construction, and are very low compared with fossil fuel sources. So, it is an alternative energy capable of reducing global waming effects if developed in a big way in the next few years.

Nevertheless, advantages and disadvantages as there may be to renewable energy. It is certain to be an area of significant investment and importance for future generations. The ability to develop technology that harnesses energy from wind, solar, water, and other renewable resources defines future generations of technology. The share of US power which will be obtained from alternative renewable sources including large hydro and biomass) in global primary energy is projected to be between 8% and 17% for the years up to 2010, possibly increasing to above 50% by 2100.

Its is clear to all to see that the renewable energy is bandwagon is rolling and it is becoming increasingly popular as fossil fuel prices rise. For example, the state of Iowa now has over 600 wind turbines that help supply its power.


Friday, October 24, 2008

Alternative Energy Faces New Headwinds

For all the support that the presidential candidates are expressing for renewable energy, alternative energies like wind and solar are facing big new challenges because of the credit freeze and the plunge in oil and natural gas prices, The New York Times’s Clifford Krauss.
Shares of alternative energy companies have fallen even more sharply than the rest of the stock market in recent months. The struggles of financial institutions are raising fears that investment capital for big renewable energy projects is likely to get tighter.
Advocates are concerned that if the prices for oil and gas keep falling, the incentive for utilities and consumers to buy expensive renewable energy will shrink. That is what happened in the 1980s when a decade of advances for alternative energy collapsed amid falling prices for conventional fuels.
“Everyone is in shock about what the new world is going to be,” V. John White, executive director of the Center for Energy Efficiency and Renewable Technology, a California advocacy group, told The Times. “Surely, renewable energy projects and new technologies are at risk because of their capital intensity.”
Senator Barack Obama and Senator John McCain both promise ambitious programs to develop various kinds of alternative energy to combat global warming and achieve energy independence.
But after years of rapid growth, the sudden headwinds facing renewables point to slowing momentum and greater dependence on government subsidies, mandates and research financing, at a time when Washington is overloaded with economic problems.
John Woolard, chief executive officer of BrightSource Energy, a solar company, said he believed the long-term future for renewables remained promising, though “right now we are looking at tumultuous and unpredictable capital markets.”
Venture capital financing for some advanced solar projects and for experimental biofuels, like ethanol made from plant wastes, is drying up, according to analysts who track investment flows.
At least two wind energy companies have had to delay projects in recent days because of trouble raising capital. Several corn ethanol projects have been delayed for lack of financing in Iowa and Oklahoma since last month, and one plant operator in Ohio filed for bankruptcy protection last week.
Tesla Motors, the maker of battery-powered cars, recently announced it had been forced to delay production of its all-electric Model S sedan, close two offices and lay off workers.
Investment analysts say initial and secondary stock offerings by clean energy companies across global markets have slowed to a crawl since the spring, and for the full year could total less than half of the record $25.4 billion for 2007.
Worldwide project financings for new construction of wind, solar, biofuels and other alternative energy projects this year fell to $17.8 billion in the third quarter, from $23.2 billion in the second quarter, according to New Energy Finance, a research firm in London. The slide is expected to be sharper in the fourth quarter and next year.
In the United States, financing for new projects and venture capital and private equity investments in renewable energy this year might still top last year’s results because so much money was in the pipeline at the beginning of the year, but the pace has slowed sharply in the last month.
The next presidential administration, to make good on campaign rhetoric and continue supporting renewables, will have to choose alternative energy over other programs at a time of ballooning deficits. Analysts say that is no sure thing.
“Government funding for renewables is now going to have to compete with levels of government funding in other areas that were unimaginable six months ago,” Mark Flannery, an energy analyst for Credit Suisse, told The Times.
The central questions facing renewables now, experts say, are how long credit will be tight and how low oil and natural gas prices will fall. Oil and gas are still relatively expensive by historical standards, but the prices have fallen by half since July. Some economists expect further declines as the economy weakens.
Wall Street analysts say most utilities and other builders can profitably choose big wind projects over gas-fired plants only when gas prices are $8 per thousand cubic feet or higher. Natural gas settled Monday at about $6.79 per thousand cubic feet, down from about $13.58 on July 3.
“Natural gas at $6 makes wind look like a questionable idea and solar power unfathomably expensive,” Kevin Book, a senior vice president at FBR Capital Markets, told The Times.
Government mandates already on the books, including state rules requiring renewable power generation and federal requirements for production of ethanol, ensure that to some degree, alternative energy markets will continue to exist no matter how low oil and gas prices go. But the credit crisis means some companies that would like to build facilities to meet that demand are going to have problems. “If you can’t borrow money, you can’t develop renewables,” Mr. Book said.
Renewable energy has become a big business worldwide, with total investment increasing to $148.4 billion last year, from $33.4 billion in 2004, according to Ethan Zindler, head of North American research at New Energy Finance. Mr. Zindler said the upward momentum had halted, and that total investment this year was likely to be lower than last.
In its recent financial rescue package, Congress provided $17 billion in tax credits to promote various forms of clean power, for everything from plug-in electric vehicles to projects that will capture and store carbon dioxide from coal-burning power plants. Production and investment tax credits were extended for wind energy for one year, geothermal energy for two years and for solar energy for a full eight years.
But some analysts say the government supports may not be enough to propel continued growth for renewables, noting that several states have already relaxed their goals.
“When they can’t meet their targets,” Mr. Book told The times, “they change them.”

Friday, October 17, 2008

Perpetual Remodeling Syndrome: Alternative residential energy

by Kelly Smith

So you're fed up with your monthly gas and electricity bill? Or you're building a new abode and you want to get off on the right track with controlling how much utility power you have to buy from an outside producer?
What you need are alternate sources of energy. There are several ways to do this and you're free to mix and match in order to reach your energy freedom goals. No, I'm not recommending that you do any strip mining for coal in your backyard or install a nuclear reactor. (Might be a good idea, though.)
Choices for alternative energy sources
When it comes to providing some or all of your own energy sources, you have options, and the viability of these will vary according to where you live. Live out on the open plains? You're a good candidate for windmill type power (wind energy).

If you live in the sun belt (below the Mason-Dixon line), solar power is your ace in the hole.
If you happen to have a stream or fast-moving river in your backyard, you might just be able to harness that power to run your air conditioner, juice up your microwave, and heat your water. Let's look at these energy sources in more detail.
Ideally, you can use a little of all of these methods to meet your energy demands.

Electricity from wind energy
Wind is a great energy source because it's almost always in motion to some extent. And once you've got those big propellers set up and spinning, you're money ahead. Take that, electrical company!
This kind of power is generated using blades, like a fan, mounted on a pole, and incorporated with a wind turbine. The rotational power turns the turbine and converts this energy into electricity. To be most effective, many turbines are connected together on a "turbine farm."

Location of wind turbine farms
These farms are usually situated on plains or beaches. Recently, plans have been made to install floating farms in the Gulf of Mexico off the Texas coast. But for you, just stick them in your backyard. If anything, you might catch some flack from your homeowner's association.
Economical considerations for wind power
Although wind power is "free" as far as the raw material fee goes, there are still construction and operating costs involved. And, since a wind turbine presents a pretty large target, it is considered to be a vulnerable asset during a hurricane or tornado.
Using solar power for a residential energy supply
Solar energy is an even more predictable source of energy than wind. Even in the dog-dead still days of summer the sun shines, and even in the winter when the mercury drops, light energy is light energy. Solar panels also offer a smaller footprint than wind turbines.
They can either be mounted on a pole outside your home or simply laid on and secured to the roof of your home. And who sees it there? It might even keep some of that heat from entering your attic. Win-win, ka-ching!

The cost of solar power panels
Solar panels may sound expensive, and believe me, they are, but when all things are considered, the bite isn't really as bad as the bark. The main manufacturers (which you should use because in this case, a good track record and reputation are gold) are General Electric, Kyosera, Evergreen Spruce, British Petroleum, Sunteck, and Sharp.
These companies are very competitive so the pricing structure is fairly level. As a baseline, for a panel that converts the sun's energy into 200 Watts will run you between $800 and $1000 plus your labor (And just how expensive are you as a DIYer?).
One of the upsides of this is that once it's installed you won't see it on the local bendovernow power company bill. The other upside is that you will qualify for state and federal government tax deductions. Be sure to check your local details.

Using running water as an energy source
OK, granted that this option isn't much used by any but the most adventurous DIY homeowners. But if you're handy, you can put this together. You'll need a paddle wheel and you'll have to attach it to to a turbine, similar to the one used in wind energy generation.
You've likely seen plenty of these kind of set-ups in movies, but used to grind grains rather than turn a turbine. The concept is basically the same.

How does it all work?
Your system will generate the electricity and store it in wet batteries. As you know, wet batteries are a direct current (DC) storage medium. Homes run on alternating current (AC). Hmmm, something must be done to translate the juice.
You'll need a converter, or more properly called, an inverter. Kyosera does market one with their panels as a selling point. The batteries in the system are called deep-cycle batteries. This is unlike your car's battery which is a shallow-cycle battery.
The difference here is that a deep-cycle battery provides a steady low output of electricity whereas your car's battery needs a big jolt when starting and then charges steadily as you drive.
Can you be a stand-alone energy provider for yourself?
Probably not. Whether you use wind, water, or the sun to provide raw material for electricity, nature itself is not going to be as consistent as a power plant burning gas or coal. The solution?

Tie into the local power grid.
When you have less power than you need, buy some. When you have more, sell some; although they won't give you the same price they charge you, tha' bums!
You'll have to ensure the power company that your power is compatible with theirs. It's important to be compatible with both their frequency and sinusoidal waveform. You will also have to be sure that when conventional power in your neighborhood is experiencing an outage, you're not feeding electricity into the lines. You might fry a lineman working on the system!

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