California geothermal project shuts down

By JAMES GLANZ
Published: December 11, 2009

The company in charge of a California project to extract vast amounts of renewable energy from deep, hot bedrock has removed its drill rig and informed federal officials that the government project will be abandoned.

The project by the company, AltaRock Energy, was the Obama administration’s first major test of geothermal energy as a significant alternative to fossil fuels and the project was being financed with federal Department of Energy money at a site about 100 miles north of San Francisco called the Geysers.

But on Friday, the Energy Department said that AltaRock had given notice this week that “it will not be continuing work at the Geysers” as part of the agency’s geothermal development program.

The project’s apparent collapse comes a day after Swiss government officials permanently shut down a similar project in Basel, because of the damaging earthquakes it produced in 2006 and 2007. Taken together, the two setbacks could change the direction of the Obama administration’s geothermal program, which had raised hopes that the earth’s bedrock could be quickly tapped as a clean and almost limitless energy source.

The Energy Department referred other questions about the project’s shutdown to AltaRock, a startup company based in Seattle. Reached by telephone, the company’s chief operations officer, James T. Turner, confirmed that the rig had been removed but said he had not been informed of the notice that the company had given the government. Two other senior company officials did not respond to requests for comment, and it was unclear whether AltaRock might try to restart the project with private money.

In addition to a $6 million grant from the Energy Department, AltaRock had attracted some $30 million in venture capital from high-profile investors like Google, Khosla Ventures and Kleiner Perkins Caufield & Byers.

“Some of these startup companies got out in front and convinced some venture capitalists that they were very close to commercial deployment,” said Daniel P. Schrag, a professor of geology and director of the Center for the Environment at Harvard University.

Geothermal enthusiasts asserted that drilling miles into hard rock, as required by the technique, could be done quickly and economically with small improvements in existing methods, Professor Schrag said. “What we’ve discovered is that it’s harder to make those improvements than some people believed,” he added.

In fact, AltaRock immediately ran into snags with its drilling, repeatedly snapping off bits in shallow formations called caprock. The project’s safety was also under review at the Energy Department after federal officials said the company had not been entirely forthcoming about the earthquakes produced in Basel in making the case for the Geysers project. …

Geothermal Project in California Is Shut Down

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Top 7 alternative energies listed

The US could replace all its cars and trucks with electric cars powered by wind turbines taking up less than 3 square kilometres - in theory, at least. That's the conclusion of a detailed study ranking 11 types of non-fossil fuels according to their total ecological footprint and their benefit to human health.

The study, carried out by Mark Jacobson of the atmosphere and energy programme at Stanford University, found wind power to be by far the most desirable source of energy. Biofuels from corn and plant waste came right at the bottom of the list, along with nuclear power and "clean" coal.

Watch a video of Jacobson discussing his findings.

The energy sources that Jacobson found most promising were, in descending order:

• Wind
• Concentrated solar power (mirrors heating a tower of water)
• Geothermal energy
• Tidal energy
• Solar panels
• Wave energy
• Hydroelectric dams

To compare the fuels, Jacobson calculated the impacts each would have if it alone powered the entire US fleet of cars and trucks.

He considered not just the quantities of greenhouse gases that would be emitted, but also the impact the fuels would have on the ecosystem - taking up land and polluting water, for instance. Also considered were the fuel's impact on pollution and therefore human health, the availability of necessary resources, and the energy form's reliability.

"The energy alternatives that are good are not the ones that people have been talking about the most," says Jacobson.

"Some options that have been proposed are just downright awful," he says. "Ethanol-based biofuels will actually cause more harm to human health, wildlife, water supply, and land use than current fossil fuels."

Top 7 alternative energies listed
Fri, 16 Jan 2009 15:01:00 GMT

Technorati Tags: alternative energy,photovoltaic,wind power,tidal,geothermal,hydroelectric,ocean power