Posts about solar energy
animals bacteria biology Career Cats cool curiouscat economy Energy Engineering engineering education engineers evolution experiment food fun Funding government green Health Care human health innovation K-12 kids Life Science medical research MIT nature ocean physics Products Research Robots Science science education science explained science facts science webcasts scientific inquiry Students Technology university research USA water webcasts

Solar Thermal in Desert, to Beat Coal by 2020

Posted on May 26, 2008  Comments (7)

Google, Chevron Build Mirrors in Desert to Beat Coal With Solar

Along a dusty two-lane highway in California’s Mojave Desert, 550,000 mirrors point skyward to make steam for electricity. Google Inc., Chevron Corp. and Goldman Sachs Group Inc. are betting this energy will become cheaper than coal.

The 1,000-acre plant uses concentrated sunlight to generate power for as many as 112,500 homes in Southern California. Rising natural gas prices and emissions limits may make solar thermal the fastest-growing energy source in the next decade, say backers including Vinod Khosla, the founder of computer maker Sun Microsystems Inc. Costs for the technology will fall below coal as soon as 2020, the U.S. government estimates.
…
“Solar thermal can provide a substantial amount of our power, more than 50 percent,” says Khosla
…
Nine solar thermal plants built in the California desert from 1985 to 1991 still operate, with Juno Beach, Florida-based FPL Group Inc. running seven. They have combined capacity of 354 megawatts, enough to power 230,000 Southern California homes. Development slowed when Congress eliminated tax credits for alternative energy in the early 1990s. Laws put in place in 2005 give solar investors a 30 percent tax credit.

Great progress is being made adding wind and solar capacity. And the increasing oil prices are encouraging much faster adoption of these technologies. The promise of widespread adoption is rapidly becoming a reality.

Related: Solar Energy: Economics, Government and Technology – Wind Power Potential to Produce 20% of Electricity Supply by 2030 – Google Investing Huge Sums in Renewable Energy – Solar Tower Power Generation

Solar Energy: Economics, Government and Technology

Posted on March 27, 2008  Comments (10)

An American Solar Opportunity Gets Shipped Abroad

The project will pour $1 billion into utility-scale photovoltaic solar farms that will directly feed power into a country’s electrical grid. The installations will range from fewer than 2 MW to up to 50 MW, while a single farm could cover hundreds and hundreds of acres.

They’ll be installed in Europe. In Asia. And maybe even in America too, one day. Why not now? Because AES wants to sow its solar seeds in only those countries that offer the most “attractive tariffs.” That eliminates the US from the list of potentials, immediately. And it gives countries like Germany, Spain, Italy and South Korea the clear advantage. They all have can’t-beat national incentives for solar developers.

It’s one of the sad facts of Washington’s incoherent clean energy policy these days. How can a country lure in clean energy projects when there are far more appealing offers elsewhere?

Government actions impact economic decisions. It will likely take more than 10 years to have good data on what government investments pay off in the energy sector. But I would say it is a pretty good bet to invest in technology such as: solar, geothermal, wind… Countries that create global centers of excellence in these areas are likely to benefit greatly. The only question I think is that many countries are smart enough to see the benefits and so likely many countries will try.

Any time many actors pursue the same economic strategy there is the risk that the payoff is diluted with so many others having done the same thing. Still the reason so many countries have adopted the strategy of developing centers of excellence in science, engineering and technology is that it is such a good idea. The USA has a problem in that we are spending more than we produce on luxuries today so there is much less available to invest compared to other countries (and compared to 40 years ago).

Related: Global Installed Capacity of Wind Power – Invest in Science for a Strong Economy – Science, Engineering and the Future of the American Economy – China challenges scientific research dominance of USA, Europe and Japan – Green Energy in Canada

2007 Solar Decathlon of Homes

Posted on October 13, 2007  Comments (1)

Solar Home on National Mall

The National Mall in Washington DC is hosting the 2007 Solar Decathlon of Homes. The link show many photos of homes and interesting information. The event opened to the public today.

The Department of Energy’s Solar Decathlon is a international competition in which 20 university-led teams compete to design, build, and operate the most attractive, effective, and energy-efficient solar-powered house. Every college or university interested in participating wrote a proposal describing how they would organize a team, design and build a house, and raise the funds necessary to have a successful entry. The 20 best proposals were selected and awarded $100,000 dollars from the United States Department of Energy.

The photo shows the Kansas Project Solar House (Kansas State University and University of Kansas) and the Washington Monument in the background.

via: Solar Decathlon Heats Up

Related: Washington DC photo essay – Solar Power Innovation: 10 Times Cheaper needs 10 Times less Sun – Large-Scale, Cheap Solar Electricity

Solar Power Innovation: 10 Times Cheaper needs 10 Times less Sun

Posted on April 7, 2007  Comments (1)

Dr Wayne CampbellTaking nature’s cue for cheaper solar power (site broke link so I removed it):

Solar cell technology developed by the University’s Nanomaterials Research Centre will enable New Zealanders to generate electricity from sunlight at a 10th of the cost of current silicon-based photo-electric solar cells.
…
Dr Campbell says that unlike the silicon-based solar cells currently on the market, the 10x10cm green demonstration cells generate enough electricity to run a small fan in low-light conditions – making them ideal for cloudy climates. The dyes can also be incorporated into tinted windows that trap to generate electricity.

He says the green solar cells are more environmentally friendly than silicon-based cells as they are made from titanium dioxide – a plentiful, renewable and non-toxic white mineral obtained from New Zealand’s black sand. Titanium dioxide is already used in consumer products such as toothpaste, white paints and cosmetics.

“The refining of pure silicon, although a very abundant mineral, is energy-hungry and very expensive. And whereas silicon cells need direct sunlight to operate efficiently, these cells will work efficiently in low diffuse light conditions,” Dr Campbell says. “The expected cost is one 10th of the price of a silicon-based solar panel, making them more attractive and accessible to home-owners.” The Centre’s new director, Professor Ashton Partridge, says they now have the most efficient porphyrin dye in the world and aim to optimise and improve the cell construction and performance before developing the cells commercially.

Related: Solar power breakthrough at Massey – Cheap, Super-efficient Solar – Large-Scale, Cheap Solar Electricity – Micro-Wind Turbines for Home Use

Solar Tower Power Generation

Posted on August 3, 2006  Comments (2)

How Australia got hot for solar power

In Australia Enviromission looking to build a 1,600-foot tall “solar tower” that can power 100,000 homes.

The tower will be over there,” Davey says, pointing to a spot a mile distant where a 1,600-foot structure will rise from the ocher-colored earth. Picture a 260-foot-diameter cylinder taller than the Sears Tower encircled by a two-mile-diameter transparent canopy at ground level. About 8 feet tall at the perimeter, where Davey has his feet planted, the solar collector will gradually slope up to a height of 50 to 60 feet at the tower’s base.

Acting as a giant greenhouse, the solar collector will superheat the air with radiation from the sun. Hot air rises, naturally, and the tower will operate as a giant vacuum. As the air is sucked into the tower, it will produce wind to power an array of turbine generators clustered around the structure.

The result: enough clean, green electricity to power some 100,000 homes without producing a particle of pollution or a wisp of planet-warming gases.

View Discovery Channel segment on EnviroMission

Large-Scale, Cheap Solar Electricity

Posted on June 25, 2006  Comments (6)

Photo of solar sheet manufacturing

Large-Scale, Cheap Solar Electricity by Kevin Bullis

This week, Nanosolar, a startup in Palo Alto, CA, announced plans to build a production facility with the capacity to make enough solar cells annually to generate 430 megawatts. This output would represent a substantial portion of the worldwide production of solar energy.

According to Nanosolar’s CEO Martin Roscheisen, the company will be able to produce solar cells much less expensively than is done with existing photovoltaics because its new method allows for the mass-production of the devices. In fact, maintains Roscheisen, the company’s technology will eventually make solar power cost-competitive with electricity on the power grid.

Nanosolar also announced this week more than $100 million in funding from various sources, including venture firms and government grants. The company was founded in 2001 and first received seed money in 2003 from Google’s founders Larry Page and Sergey Brin.

Information on the nanotechnology involved from the Nanosolar site.

MIT Hosts Student Vehicle Design Summit

Posted on June 18, 2006  Comments (2)

Solar concept car drawing

Student summit set on vehicle design by Deborah Halbe

Seventy-three students from 21 universities around the world will gather at MIT this summer to design and build between five and 10 commuter vehicles that exploit human power, biofuels, solar technologies and fuel cells to travel at least 500 miles per gallon of fuel.
…
An added goal for the June 13-Aug. 13 program is to lay a foundation for ongoing multidisciplinary transportation research involving all five MIT schools. “We hope to create a project-based, socially conscious engineering curriculum for the ’06-’07 academic year,” said Anna S. Jaffe, a junior in civil and environmental engineering and one of the summit student organizers.

Image by Mitchell Joachim and William Lark, sketch of a concept solar car was created for the MIT Vehicle Design Summit.

  • Recent Comments:

    • Jason Monroe: Many of my friends do Crossfit and realize how quickly you lose weight when you increase your...
    • Denise Gabbard: Nice! This is the kind of thing we should all embrace. Not only are they helping the planet...
    • Huskar: Thanks your explanation.
    • Mark: Good point, my explanation is as follows. If someones got a better one I’d like to hear it....
    • Asad Wahab: I was just wondering if he can is round in shape then how come the electrons are shifted to one...
    • Sonia Bourke: That’s amazing – such a beautiful animal. I’ve always wondered how a...
    • Anonymous: Hi, Thanks for your nice article. I think India can overtake the China, because engineering...
    • Mark: We just bought one the other day at a plant sale, and it has just begun to flower. I didn’t...

  • Recent Trackbacks:

  • Links