October 20, 2008
Electrical energy was one of man’s greatest discoveries. It has helped build new civilizations. The large amount of electricity produced has its source in fossil fuels, nuclear fission, water, and wind. This article will explore the different methods of electricity production.
Electricity is churned out by enormous turbines. These turbines need a support to be moved. There are various ways of moving these turbines:
By burning fossil fuels: Electricity is produced when the blades of a turbine are moved by enormous amounts of vapor. This vapor is generated by heating a lot of water in huge furnaces. The water is heated by burning fossil fuels like coal, petroleum, and natural gas. This method releases enormous amounts of carbon dioxide in the air, thus severely polluting our atmosphere. It is important to turn to alternate methods of electricity production for long-term benefits.
By water: You must have heard how dams are constructed to produce electricity. A popular method to produce electricity, a water dams serves two purposes: restricting water bodies and producing electricity. Water dams use the river water to move turbines, helping them produce electricity. Electricity generated this way helps control air pollution; however, this method of electricity production adversely affects the ecosystem in the water bodies.
Water accounts for 90 percent of the world’s electricity generated through renewable resources.
By wind: Electricity is produced when wind energy is converted to electrical energy. Wind mills or wind turbines are used to churn up enormous amounts of wind energy which is then converted into electrical energy.
The latest in wind energy advancement tells us that wind energy is helping create portable cell phone chargers.
By nuclear fission: Yes, nuclear fission does not only make atom bombs, but also helps produce electricity. Nuclear fission causes a chain reaction where the element Uranium is bombarded by neutrons causing it to split. Every time a Uranium nucleus is split, more neutrons are released, causing more splits in the already split Uranium nuclei. The resultant chain reaction generates a lot of heat which is used to heat water the vapor of which eventually moves turbines to create electricity.
By bio-waste: With technological advancements, electricity is also being produced by bio-waste. Bio-gas is a typical way of generating electricity in rural areas in countries like India. In fact, a new technology evolved in the state of Bihar in India that uses human waste to generate electricity.
Make power at home with solar and wind energy to eliminate your power bill. Get a complete guide at Earth 4 Energy
January 11, 2007
By Timothy Gardner
NEW YORK (Reuters) – Ted Turner, the cable television billionaire and owner of vast tracts of land in the U.S. West, is forming a venture with a solar energy company targeting California markets.
“Our future depends on changing the way we use energy,” Turner said in a statement. “We’ve got to move away from fossil fuels and develop long-term energy solutions that work. Using clean energy technologies, such as solar power, is the right thing to do, and it represents a tremendous business opportunity.”
Turner will partner with Dome-Tech Solar, a solar company in Branchburg, New Jersey, to create DT Solar, a Turner renewable energy company. Entire story
December 29, 2006
by Hans Dekker
As people search for alternatives to fossil fuel energy, solar energy emerges as one of the cleanest and most practical sources of electricity. Solar panels can be installed on rooftops or any area that receives a lot of sunshine. The solar panels consist of a photovoltaic system that converts the energy of the sun into electricity. The word Photovoltaic is a conjuction of the old Greek word “Photon” meaning light and Volt, the force that makes electrons move
Photovoltaic systems have existed since the 1950s but only in recent years has the technology matured to the point of making it a viable alternative to power utilities. Indeed, most solar systems do not replace the utility company instead they work in conjunction with it to produce extra electricity that can be fed back into the grid.
One of the main problems with solar power is storing it for use during non-daylight hours. Batteries can be used but they are expensive and have a limited life span. As an alternative, excess solar electricity can be fed back to the power utility company for a credit, and then power can be drawn when needed. In a sense, the utility company becomes the storage device.
Most municipalities have legislation requiring power utility companies to accept electricity produced by solar panels or wind turbines. This system benefits everyone “there is less dependency on fossil fuel power plants” and electricity costs are reduced for owners of photovoltaic systems.
This is called net-metering, the specifics depend on your location and utility company. A disadvantage of these grid connected systems is that there invertors disconnect in case of a power faillure. This is a quite logical demand from the utility companies point of view. Their engineers have to know for sure that the grid they are working on is really dead. But from our point of view it can be a nuicance. The solution is a grid connected system with battery backup.
Photovoltaic cells produce electricity by using specially treated materials such as silicon that convert light into power. They can be of almost any size and are suitable for providing electricity for small items such as calculators or watches right up to complete industrial complexes. Because they can be wired together, an array of solar cells can produce enough electricity for residential or commercial needs.
The main requirement, of course, is sunlight. This makes solar power most practical for southern areas such as California and Arizona. But it can also be used in more northerly areas as a backup power system. As the technology advances, photovoltaic cells are able to produce usable amounts of electricity even in low light conditions.
About The Author
Hans Dekker is author of http://www.alternative-energy-guide.com/ come and profit from our energy saving knowledge.
December 28, 2006
By Brian Womack
The math isn’t complicated for the solar energy sector.
The industry wants to cut solar prices by roughly half to compete against traditional power utilities without government incentives.
SunPower (NASDAQ:SPWR), a major solar panel maker, has been a leader in this effort and recently announced one of the biggest acquisitions in the industry’s history to help the San Jose, Calif., company reach that goal.
The company plans to buy PowerLight, a firm that installs solar panels, for about $330 million. The cash-and-stock deal should close early next year, pending approvals.
Together the companies will hold a stake in the key parts of the industry, from design through manufacturing to installation. With that breadth, the company hopes to find new ways to cut costs more quickly. Entire story
December 27, 2006
Aim is to clean up Tri-Valley area, aid propery homeowners
By Meera Pal
Pleasanton and Livermore, already neighbors, have something else in common: a plan to encourage property owners to step up their use of solar power — and help clean up the region at the same time.
The two cities recently signed a joint agreement with Spectrum Energy, an Elk Grove-based energy services company that specializes in designing and installing energy-efficiency measures.
For $40,000, Spectrum Energy will develop and propose a design for a customer-friendly, communitywide system for residents and businesses interested in installing solar energy systems. Each city is contributing $20,000 toward the program.
“Basically, those who are interested in solar energy would be able to come to City Hall and get a kit to convert their home,” said Jacqui Diaz, assistant to the Pleasanton city manager.
The program aims to make installing solar equipment easier for property owners. It would help them find out whether their roof is suitable, what rebates are available and which equipment vendors to contact, Livermore Public Works Manager Jacque Delgadillo said. It is unclear how much the service would cost, if anything. Entire story