Results tagged “solar” from Innovations

Solar panels are becoming increasingly popular, with thieves who resell them on eBay, according to the New York Times. Although no one's compiled statistics, police departments in California say they're seeing a rash of such crimes. Outside of California, where fewer panels have been installed, thefts are rarer, but growing, the paper says.

Web pick posted by Neil Savage, Xconomy.com

Using the Sun to Stay Cool

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The U.S. Navy and a McDonald's restaurant are testing a new solar-powered air conditioner, the Environmental News Network reports. The air conditioner, made by GreenCore of Rancho Cucamonga, CA, runs on a 170-watt solar panel and can either heat or cool a 600-sq-ft. room. It runs on direct current from the panel, avoiding the losses of converting to alternating current, and has a battery to keep it going when there's no sun.

Meanwhile, Military & Aerospace Electronics Newsletter reports that the Navy's requirement was for "uninterrupted air conditioning 24 hours per day, 365 days a year in an area with unreliable power, including no electric power during certain times of the year."

Web pick posted by Neil Savage, Xconomy.com
The renewable energy industry wants the U.S. government to make tax credits for clean energy more permanent, saying it's hard to build an industry on two-year subsidies. But a writer at the Wall Street Journal argues that short-term subsidies may actually boost the industry, as consumers rush to install solar panels before the tax credit expires.

Web pick posted by Neil Savage, Xconomy.com

After an outcry from the solar power industry, the federal Bureau of Land Management has lifted its recently announced ban on new solar energy projects on public lands. The BLM had placed a two-year moratorium on such projects so it could study their impact. CNET News says the bureau reversed course on Wednesday.

Web pick posted by Neil Savage, Xconomy.com

solar mirror
 This parabolic mirror designed by students at MIT focuses the sun's light to a single point, potentially generating temperatures upwards of 1,300 degrees Celsius. (MIT photo)
 

One relatively cheap method for harnessing solar power is to focus a wide swath of sunlight down to a small area, thus concentrating its heat. Students at MIT have made a 12 x 12 foot mirror that can focus sunlight onto a small point, boiling water to create steam energy. The Discovery Channel says that the students, who aimed to make the mirror as inexpensively as possible, are forming a company to market their technology.

Web pick posted by Neil Savage, Xconomy.com.

All new single family homes in Hawaii will soon have to have solar water heaters to get a building permit. The law, signed by Republican Governor Linda Lingle, goes into effect in 2010. The website Metaefficient.com says the law is meant to address the fact that the island relies on foreign countries for 90 percent of its energy. The new law stems from a proposal made five years ago, when oil was $40/barrel. It has since more than tripled.

Web pick posted by Neil Savage, Xcomony.com

In a sign that the market for photovoltaics may be about to take off, three computer heavyweights that promoted the development of the PC over the past three decades are moving into the solar cell business, says Scientific American. IBM announced it will begin making solar panels based on chemical thin films. Intel spun off a new solar tech company. And Hewlett-Packard started licensing technology to a company that makes rooftop solar systems.

Web pick posted by Neil Savage, Xconomy.com

Wind and solar power are all well and good, but unless there's a way to transmit their electricity from, say, the middle of the Mojave Desert to a home in the Dallas suburbs, they won't make much difference.

Speakers at the Renewable Energy Finance Forum said there's a real need to fund and build high-power transmission lines in the parts of the country where wind farms and solar installations would work best, which tend to be less inhabited, according to the Environmental News Network.

posted by Neil Savage, Xconomy.com

A New Jersey man has taken his home off the grid by installing 56 solar panels on his roof, and then using their power to split water into oxygen and hydrogen. He stores the hydrogen which then can power fuel cells to provide power at night and in the winter. He also uses the hydrogen to refuel his car.

Scientific American reports that the project cost $500,000, of which $400,000 came as grants from the New Jersey Board of Public Utilities. Whether such a setup could be made economically feasible in subdivisions around the country is an open question.

posted by Neil Savage, xconomy.com

As data centers face growing demands for power to run their servers, many of them are looking to build new facilities near sources of renewable energy. But as Ars Technica points out, sources like sun and wind fluctuate in availability, so finding ways to store that energy becomes an issue. The blog looks at various ways in which electricity generate by solar cells or wind turbines might be held for later use.

Web Picks posted by Neil Savage in partnership with xconomy.com.