All Posts Tagged With: "Electricity"
Interesting Wind Facts
• One megawatt of wind capacity is enough to supply 240-300 average American homes. — American Wind Energy Association
• The United States is No. 1 in the world in total installed wind capacity as of December 2008, with 25,170 megawatts. Here are the rest of the top 10:
2. Germany 23,903 megawatts
3. Spain 16,754 megawatts
4. China 12,210 megawatts
5. India 9,645 megawatts
6. Italy 3,736 megawatts
7. France 3,404 megawatts
8. UK 3,241 megawatts
9. Denmark 3,180 megawatts
10. Portugal 2,862 megawatts
Rest of the world 16, 686 megawatts
Total top 10: 104, 104 megawatts
World Total: 120,791 megawatts
23Apr2009 | ecofriendly | 2 comments | ContinuedSolar power for less than $2 a day
Imagine a solar panel as affordable as a fancy new bicycle. A panel designed so simply that you can install one (or more) yourself, just outside your windows, in the course of an afternoon.
That’s the concept behind Oakland, Calif.-based Veranda Solar, a start-up founded last year by Capra J’neva and Emilie Fetscher, recent graduates of the product design program at Stanford University. J’neva and Fetscher dreamed up attractive, flower-shaped solar panels as part of their master’s project at the design school. “We created a starter solar system that expands as your budget does,” J’neva says.
1Apr2009 | ecofriendly | 3 comments | ContinuedESolar to build solar power plants in India
ACME will make a $30 million equity investment in eSolar in return for the exclusive right to develop plants employing the companys modular solar thermal power technology.
The partnership is eSolars first foray outside the United States. The Pasadena, California, company has been racking up deals with U.S. utilities, including an agreement last month with NRG Energy Inc to create up to 500 MW of solar thermal power plants in the U.S. Southwest.
Stimulus Bill and Solar Power- Let the Sun Shine: Stimulating Energy and Employment
* To maximize job creation, spending on renewable energy envisioned in the economic stimulus bill should be targeted at distributed generation projects, which use local labor for installation and increase the efficiency and reliability of power supply.
* Of the renewable energy sources, solar photovoltaic (PV) power is best suited to realize the potential of distributed and renewable energy generation. It matches peak energy demand most closely and offers the best opportunity to substitute expensive, centrally-generated electricity.
* Direct federal procurement and renewable energy loan guarantees, grants, and tax credits should favor smaller, distributed PV installations connected to the local distribution grid or generating electricity directly at the point of consumption.
* A significant share of the stimulus bill’s funding for modernizing the electricity grid should go to installing the electrical gear and smart power electronics and communication devices necessary for integration of distributed PV systems into the grid and better management of onsite generation, storage and use of energy.
24Feb2009 | ecofriendly | 0 comments | ContinuedProgress in the Solar Cell Two Step Method
Thermal photovoltaics are solar cells that convert the light that radiates from a hot surface into electricity. The first applications will be generating electricity from waste heat, and then the technology could be developed to generate electricity from sunlight far more efficiently than photovoltaic solar cells. In the thermal photovoltaics system, sunlight is concentrated on a device to heat it up, and the light it emits is then converted into electricity by the photovoltaic portion of the cell. That’s a very interesting combination of engineering steps.
19Feb2009 | ecofriendly | 0 comments | ContinuedThe benefits of wave power
Wave power generators are inherently ecologically-friendly. Without a need for fossil fuels, and with no harmful chemicals released, wave power stations such as the “Duck” and the “Sea Snake” do not pollute our atmosphere or deplete the earth’s supply of non-renewable fuels. They are also quiet in operation with many turbines emitting less noise than a vacuum cleaner, so there is practically no noise pollution either.
18Feb2009 | ecofriendly | 0 comments | ContinuedGeothermal Energy – Its Types and How It Works
The rock underground is full of cracks and small pockets, and these can fill with water. Water that gets trapped in underground caves will get very hot, even hotter than boiling temperature, but it cannot boil because there is no place for steam to escape into the air. This water sometimes finds its way to the surface in the form of hot springs. Most of the hot water stays underground in pockets called geothermal reservoirs.
4Dec2008 | ecofriendly | 0 comments | Continued