Solar Energy


Uhh…it’s for Science? Uhh…I have bad luck with uploading small MB?
Video Rating: 4 / 5

How to build your own Home Solar Energy or Wind Turbine Power Plant.
Video Rating: 4 / 5

Energy Provision in Japan

Japan finding new energy sources

Japan is a densely populated nation, and that makes the Japanese energy market tougher in contrast with different markets. For japan energy savings are not the issue but energy generation streams. If we make the most of the chances of close to-shore installations or even offshore installations in the future, that can give us the potential of continued use of wind energy. If we go offshore, it is dearer because the construction of foundations is expensive.

Typically the wind is stronger offshore, and that can offset the higher costs. We’re getting more and more competitive with our equipment. The price-in case you measure it per kilowatt-hour produced-is going decrease, because of the fact that generators are getting more efficient. So we’re creating increased curiosity in wind energy. If you compare it to different renewable power sources, wind is by far the most aggressive today. If we’re able to make the most of websites close to the sea or at sea with good wind machines, then the worth per kilowatt-hour is aggressive against other sources of energy, go the phrases of Svend Sigaard, who happens to be president and CEO of the world’s largest wind turbine maker, Vestas wind methods out of Denmark. Vestas is closely concerned in investments of capital into serving to Japan increase its wind turbine power generating capacity. It is searching for to get offshore installations put into place in a nation that it says is prepared for the fruits of funding into alternative energy research and development.

The Japanese know that they can not change into subservient to the energy provide dictates of foreign nations-World Conflict II taught them that, because the US decimated their oil provide lines and crippled their army machine. They need to produce power of their very own, and so they being an remoted island nation with few pure assets that are conducive to vitality production as it’s defined now are very open to foreign investment and international development in addition to the prospect of technological innovation that can make them independent. Permitting corporations equivalent to Vestas to get the nation running on more wind- produced energy is a step in the fitting route for the Japanese people.

The manufacturing of vitality through what is named microhydoelectric energy vegetation has additionally been catching on in Japan. Japan has a myriad rivers and mountain streams, and these are ideally suited places for the putting up of microhydroelectric energy crops, that are defined by the New Energy and Industrial Know-how Growth Group as energy crops run by water which have a maximum output of a hundred kilowatts or less. By comparability, “minihydroelectric” energy vegetation can put out as much as a thousand kilowatts of electrical energy.

In Japan, the small-scaled mini- and micro-hydroelectric energy crops have been regarded for a considerable time as beingsuitable for creating electrical energy in mountainous regions, however they’ve by way of refinement come to be thought to be glorious for Japanese cities as well. Kawasaki Metropolis Waterworks, Japan Pure Power Firm, and Tokyo Electrical Energy Firm have all been involved within the improvement of small-scale hydroelectric energy plants inside Japanese cities.

Perhaps in our drive to save energy we should be looking at ways of generating energy. Obviouse as it appears to be. Small energy saving measures add up when multiplied out across a nation but also small renewable energy creation schemes can significantly contribute.

The Future Of Wind Energy

The Future Of Wind Energy

Free Online Articles Directory


Home Page > News and Society > Environment > The Future Of Wind Energy

The Future Of Wind Energy

Posted: Sep 23, 2008 |Comments: 0
| Views: 487 |


f you’re one of those people who every winter puts out 10,000 holiday lights or every summer keeps the air conditioning cold enough to make frozen treats on the kitchen counter – or whether you’re like everyone else who simply likes the modern convenience of electrical – then you should care about how we will generate electricity in the future.
We are in no danger of running out of coal, the primary fuel source for electricity generation in the US and many other parts of the world. And we could have as many new glowing nuclear power plants as we want. But the reality is that the pollution and safety impacts of these electricity-generating technologies forecast their necessary demise:
1) The problems with coal-fired power plants include sulfur (acid rain) and mercury pollution; coal-fired power plants are the biggest source of greenhouse gases in the world; and coal mining scars land and people alike.
2) Nuclear power plants are very clean in terms of emissions of typical pollutants, including carbon dioxide (the principal greenhouse gas), but the potential for accidents and terrorist strikes has most people doubting the wisdom of more nuclear power. And let’s not forget that we still don’t know what to do with the tons of long-term radioactive waste nuclear power plants produce.
So what does the future look like for electricity generation? We must start making major strides towards cleaner technologies like wind, solar, wave, and biomass. Today we talk about wind energy in an article that was adapted from materials made available by Lester Brown and the Earth Policy Institute.
People have been harnessing the power of the wind for centuries. The concept of wind energy is simple: the wind pushes against angled blades, causing them to move (much like the sail on a boat); the blades are attached to a hub and cause it to turn, which in turn can drive other components.
In olden days – back when wind-powered devices were called windmills – the turning motion of the hub was transferred to mechanical devices such as grist mills or groundwater pumps. graphic of wind turbines In a modern wind turbine, the hub drives an electrical generator and the output is electricity.
The modern wind turbine has come a long way in terms of sophistication, and the designs of today’s wind turbines are elegant and very efficient compared to wind turbines from even a decade or two ago. Designers have also solved some problems associated with early wind turbines, such as birds dying by flying into them. Additional advancements have been made in siting technology – wind turbines can also be sited off-shore now.
With wind-generated electricity, the principal production cost is the capital outlay for initial construction. Since wind is a free fuel, the only ongoing cost is for maintenance. Given the recent volatility of natural gas prices, the stability graph of wind power cost; shows cost has come down from 38 cents per kilowatt hour in 1982 to 4 cents per kilowatt hour in 2002 of wind power prices is particularly appealing. With the possibility of even higher costs of natural gas in the future, natural gas-fired plants may be used increasingly as backup for wind-generated electricity.
When the wind industry first began to develop in California in the early 1980s, wind-generated electricity cost 38 cents per kilowatt-hour. Since then it has dropped to 4 cents or less in prime wind sites. And some long-term supply contracts have been signed for 3 cents per kilowatt-hour. By 2020, many European wind farms will be generating electricity at 2 cents per kilowatt-hour, making it cheaper than all other sources of electricity.
Wind-generating capacity worldwide is growing at over 30% per year and has jumped from less than 5,000 megawatts in 1995 to 39,000 megawatts in 2003 – an increase of nearly eight-fold. The fossil fuel with the highest growth rate – natural gas – grew at just over 2% annually during the same period. Oil grew at less than 2% annually, and coal at less than 1%. Nuclear generating capacity expanded by 2% annually.
Wind is appealing for several reasons. It is abundant, cheap, inexhaustible, widely distributed, clean, and climate-benign – a set of attributes that no other energy source can match. When the US Department of Energy (DOE) released its first wind resource inventory in 1991, it pointed out that three wind-rich states – North Dakota, Kansas, and Texas – had enough harnessable wind energy to satisfy all of the nation’s electricity needs. Those who had previously thought of wind as a marginal potential source of energy obviously were surprised by this finding.
In retrospect, we now know that the 1991 data was a gross underestimate of the potential of this renewable energy source, because it was based on the technologies available in 1991. Advances in wind turbine design since then have enabled turbines to operate at lower wind speeds, to convert wind into electricity more efficiently, and to harness a much larger wind regime. Such advancement have perhaps tripled the amount of harvestable wind. Thus, while the DOE could say in 1991 that North Dakota, Kansas, and Texas had enough wind-energy potential to supply all national ELECTRICITY needs, we may now be able to say that they have enough harnessable wind energy to supply all national ENERGY needs. (See sidebar for more information.)
Once we get cheap electricity from wind, we have the option of electrolyzing water to produce hydrogen, which provides a way of both storing and efficiently transporting wind energy. At night, when the demand for electricity drops, the hydrogen generators can be turned on to build up reserves.
Once in storage, hydrogen can be used to fuel power plants, in much the same way that natural gas is used. This hydrogen can be used either as a backup for wind power or as an alternative to natural gas, especially if rising prices make natural gas prohibitively costly for electricity generation.
Hydrogen is also the fuel of choice for the fuel-cell engines that automakers worldwide are working on for our everyday vehicles. While hydrogen-powered vehicles may still seem far off in the future, if push comes to shove on the climate front – i.e. once it becomes more obvious that we must stop burning so much oil and pumping so much CO2 into the atmosphere – cars with gasoline-burning internal combustion engines could be converted to hydrogen.
Europe is leading the world into the age of wind energy, spurred in part by concerns about global warming. The record heat wave in Europe in August 2003 that scorched crops and claimed 35,000 lives has accelerated the replacement of climate-disrupting coal with clean energy sources.
The European Wind Energy Association projects that Europe’s wind-based electricity-generating capacity will nearly triple from 2003 to 2010. By 2020, wind-generated electricity is projected to satisfy graph of wind power capacity by country; shows a steady upward trend for all countries, with Germany leading, followed by Spain and the U S, then Denmark and India the residential needs of 195 million Europeans – half of the region’s population.
After developing most of its existing 28,400 megawatts of capacity on land, Europe is now tapping offshore wind resources as well. A 2004 assessment of Europe’s offshore wind-energy potential concluded that if Europe moves more aggressively to develop its vast offshore resources, wind could be supplying all of the region’s residential electricity by 2020.
Many countries in Europe are pushing hard to bring in more wind power. Here are a few examples.
1) The United Kingdom is requiring an investment of over billion in off-shore wind farms that should satisfy the residential electricity needs of 10 million of the country’s 60 million people.
2) Tiny Denmark, which led Europe into the wind era with the development of its own wind resources, now gets an impressive 20 percent of its electricity from wind.
3) Germany overtook the United States in terms of wind-based generating capacity in 1997. Now Spain is close to overtaking the United States as well.
Europe’s leadership on wind energy has given it a major economic bonus: nine of the world’s ten leading wind turbine manufacturers are in three countries – enmark, Germany, and Spain. These happen to be the three countries that have had the strongest and most stable market incentives for developing wind energy.
In the US, wind power has grown 26% per year on average over the last 5 years, but the United States is lagging in the development of wind energy. This is not because we can’t compete technologically with Europe in manufacturing wind turbines, but because of a lack of leadership in Washington. The wind production tax credit of 1.5 cents per kilowatt-hour, which was adopted in 1992 to establish parity with fossil-fuel subsidies, has been permitted to lapse three times in the last five years, most recently at the end of 2003 when Congress failed to pass a new energy bill. Such uncertainties disrupt planning throughout the wind power industry.
The United States, with its advanced technology and wealth of wind resources, should be a leader in this field, but unfortunately it continues picture of wind farm to rely heavily on coal – a nineteenth century energy source – for much of its electricity at a time when European countries are replacing coal power with wind power.
Europe is not only leading the world into the wind age, it is also leading the world into the post-fossil fuel age – the age of renewable energy and climate stabilization. By demonstrating the potential for harnessing the energy in wind, Europe is unveiling the new energy economy for the rest of the world.

Lester Brown is founder and president of Earth Policy Institute. He has been described by the Washington Post as “one of the world’s most influential thinkers” and as “the guru of the global environmental movement” by The Telegraph of Calcutta. His most recent book is Plan B: Rescuing a Planet Under Stress and a Civilization in Trouble.
One final note about wind power. There are naysayers out there who claim that we would have to blanket the country with “wind-meels” to replace all our coal and nuclear plants. Don’t believe it. Remember that on a wind farm, the “footprint” of the operation – the turbine base plus the service roads – occupies only 5% of the land area. That makes wind power a perfect partner with open-space operations like farming and ranching.
And oh, by the way, our current electricity-generating technologies are blanketing the country with pollution!

Retrieved from “

(ArticlesBase SC #574571)


James Nash
About the Author:

James Nash is a climate scientist with Greatest Planet ( Greatest Planet is a non-profit environmental organization specialising in carbon offset investments.

James Nash is solely responsible for the contents of this article.



Article Tags:
environment, wind power, wind energy, windpower, renewable energy, global warming climate change

Related Videos

Related Articles

Latest Environment Articles
More from James Nash

Earth Week: Green Computing Solutions #5 – Eco-Friendly Gadgets

You may not be quite ready to install solar panels and wind turbine power generators on your roof, but at least you can get your personal devices and pocket-sized gadgets off the grid. In this last episode in our Earth Week 2009 series, Stacy Reed looks at solar chargers, energy usage monitors and more. (02:54)

How to Use Wind Power as an Energy Source Part 2

A veteran entrepreneur is working to harness the wind. T. Boone Pickens is calling on other business owners to help make wind power a reliable energy source in the United States.


How to Use Wind Power as an Energy Source Part 1

A veteran entrepreneur is working to harness the wind. T. Boone Pickens is calling on other business owners to help make wind power a reliable energy source in the United States.


Green by Design – ACUA, Wind, Cosmetics, NJCEP brings you Green by Design – ACUA, Wind, Cosmetics, NJCEP. (09:26)

How to Make Hydrogen and Fire Go “BOOM”

What really happens when you poke a hydrogen filled balloon with fire! (02:29)

Developments in the Renewable Energy Sector

This past few years saw rising interest expressed for renewable energy—the kind of energy that is abundant and free, being taken from natural resources like sunlight, water, rain, geothermal heat, wind, and tides.

Joost Hoogstratel

News and Society>
Jan 19, 2009

Benefits from Solar Energy

The exploitation and utilization of new energy sources are considered one of the major challenges today. Solar energy plays a central role, and the direct conversion of chemical energy such as hydrogen generation by water splitting is one of the interesting variants. Titanium oxide-based photo catalysis is currently most effective, but little understood process of conversion.


News and Society>
Jun 23, 2011

Green and Environmental-Friendly Lunch Boxes

Having green lunch boxes help the environment. Also, through that, you can teach your children to become green and environmental-friendly. You are also teaching them to love the environment and become conscious about the problems of the environment. Keep these things in mind when packing your children’s lunch boxes. This will help you to save more money and save the environment.


Saving fuel

Create your own video slideshow at

Save on Fuel