Thursday, March 15, 2007

MIT provides blueprint for future use of coal

Leading academics from an interdisciplinary MIT panel issued a report today that examines how the world can continue to use coal, an abundant and inexpensive fuel, in a way that mitigates, instead of worsens, the global warming crisis.

The study, "The Future of Coal--Options for a Carbon Constrained World," advocates that the United States assume global leadership on this issue through adoption of significant policy actions.

Led by co-chairs John Deutch, Institute Professor, Department of Chemistry, and Ernest J. Moniz, Cecil and Ida Green Professor of Physics and Engineering Systems, the report states that carbon capture and sequestration (CCS) is the critical enabling technology to help reduce carbon dioxide emissions significantly while also allowing coal to meet the world's pressing energy needs.

According to Deutch, "As the world's leading energy user and greenhouse gas emitter, the U.S. must take the lead in showing the world CCS can work. Demonstration of technical, economic and institutional features of CCS at commercial scale coal combustion and conversion plants will give policymakers and the public confidence that a practical carbon mitigation control option exists, will reduce cost of CCS should carbon emission controls be adopted and will maintain the low-cost coal option in an environmentallyacceptable manner."

Moniz added, "There are many opportunities for enhancing the performance of coal plants in a
carbon-constrained world--higher efficiency generation, perhaps through new materials; novel approaches to gasification, CO2 capture and oxygen separation; and advanced system concepts, perhaps guided by a new generation of simulation tools. An aggressive R&D effort in the near term will yield significant dividends down the road and should be undertaken immediately to help meet this urgent scientificchallenge."

Key findings in this study include:

-- Coal is a low-cost, per BTU, mainstay of both the developed and developing world, and its use is projected to increase. Because of coal's high carbon content, increasing use will exacerbate the problem of climate change unless coal plants are deployed with very high efficiency and large-scale CCS is implemented.

-- CCS is the critical enabling technology because it allows significant reduction in carbon dioxide emissions while allowing coal to meet future energy needs.

-- A significant charge on carbon emissions is needed in the relatively near term to increase the economic attractiveness of new technologies that avoid carbon emissions and specifically lead to large-scale CCS in the coming decades. We need large-scale demonstration projects of the technical, economic and environmental performance of an integrated CCS system. We should proceed with carbon sequestration projects as soon as possible. Several integrated large-scale demonstrations with appropriate measurement, monitoring and verification are needed in the United States over the next decade with government support. This is important for establishing public confidence for the very large-scale sequestration program anticipated in the future. The regulatory regime for large-scale commercial sequestration should be developed with a greater sense of urgency, with the Executive Office of the President leading an interagency process.

-- The U.S. government should provide assistance only to coal projects with carbon dioxide capture in order to demonstrate technical, economic and environmental performance.
Original story at www.physorg.com/news93106592.html

-- Today, Integrated Gasification Combined Cycle appears to be the economic choice for new coal plants with CCS. However, this could change with further research development and demonstration, so it is not appropriate to pick a single technology winner at this time, especially in light of the variability in coal type, access to sequestration sites and other factors. The government should provide assistance to several "first of their kind" coal utilization demonstration plants, but only with carbon capture.

-- Congress should remove any expectation that construction of new coal plants without carbon dioxide capture will be "grandfathered" and granted emission allowances in the event of future regulation. This is a perverse incentive to build coal plants without carbon dioxide capture today.

-- Emissions will be stabilized only through global adherence to carbon dioxide emission constraints. China and India are unlikely to adopt carbon constraints unless the United States does so and leads the way in the development of CCS technology.

-- Key changes must be made to the current Department of Energy research development and demonstration program to successfully promote CCS technologies. The program must provide for demonstration of CCS at scale; a wider range of technologies should be explored; and modeling and simulation of the comparative performance of integrated technology systems should be greatly enhanced.
The report is available online at http://web.mit.edu/coal

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Saturday, February 10, 2007

TXU faces a Texas coal rush

Interesting article from Fortune Magazine bellow. Other articles about TXU can be found (baptists) here, (environmental groups) here, (TU Scientists) here and for another one of my posts with a video of activists on the streets check this out.

[UPDATE] Sheryl Crow and Laurie David are now planning to tour texas to help build opposition.
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For whatever reason - the wreckage of Hurricane Katrina, Al Gore's "An Inconvenient Truth," the plight of polar bears in the Arctic, the Democratic takeover of Congress - this is the moment when corporate America has at long last decided to get serious about global warming.


Joining hands with environmentalists, the CEOs of ten Fortune 500 companies, among them GE (Charts), Alcoa (Charts), DuPont, and utilities Duke Energy and PG&E (Charts), last month called on the government to regulate the greenhouse gases caused by burning fossil fuels. Dozens of big companies, including Wal-Mart (Charts), have pledged to reduce their own emissions of carbon dioxide. In a twist on the theme, Dell (Charts) will arrange to have trees planted for customers who pay $2 to offset the CO2 generated when a computer is plugged into the power grid.

And then there is TXU (Charts).

A $10.4-billion-a-year energy company based in Dallas, TXU is staking its future on coal - the dirtiest of all fuels used to generate electricity. Last spring the company announced plans to build 11 new coal-fired power plants in Texas at a cost of nearly $1 billion apiece. That has set off a firestorm of opposition - lawsuits, pickets, petitions, anti-TXU Web sites, lobbying at the state capitol, even a hunger strike.

One environmental group calculated that the new plants would generate 78 million tons of CO2 each year - more than the emissions of Sweden, Denmark, or Portugal. Texas already ranks first in the U.S. in carbon emissions.

"This is an $11 billion step in the wrong direction," fumes David Hawkins, a climate-change expert at the Natural Resources Defense Council. "And when you're marching backward with $11 billion, you can do a lot of damage."

But TXU is just getting started. The company says it will soon unveil plans to build another eight to 15 coal-burning plants outside Texas, counting on economies of scale to hold costs down. TXU also operates strip mines, which supply 70 percent of the coal it burns.

To explore the logic behind TXU's plans, I went to see Mike McCall, the company executive in charge of selling the coal plants to Texans. A burly, easygoing 49-year-old, McCall is a coal man to his core. He went to the college at the Missouri School of Mines with the financial help of Peabody Coal, the nation's largest producer, worked in coal mines in Illinois, ran a private railroad that shipped coal, and climbed the ladder at TXU to become head of its wholesale electricity unit.

McCall's argument on behalf of coal is straightforward. Coal is abundant, and it is mined in the U.S. It's cheaper than natural gas and more reliable than wind or solar power.

TXU would like to generate more nuclear energy - it plans to apply for permits to build up to three nukes in 2008 - but getting a green light from industry-friendly Texas regulators for coal plants, even with all the brouhaha, is a lot easier than obtaining the federal government's approval to build a nuclear power plant. No new permits for nukes have been issued since the 1970s.

That leaves coal as the best fuel available to satisfy America's ever-expanding appetite for electricity - all our computers and big-screen TVs and air-conditioned homes and offices need juice.

Currently, coal supplies about 52 percent of the nation's electricity, and U.S. demand for electric power is projected to grow by about 1.5 percent a year. (Nationally, more than 150 new coal plants are planned.) With its hot summers, fast-growing population, and expanding industrial base, Texas has an even more urgent need for power; peak demand could exceed supply as soon as the summer of 2008.

"If you care about national security and you care about energy independence," McCall says, "you want to find a way to use coal that's acceptable to the public."

As for climate change, he allows that it's an "important and long-term issue" and says TXU's plants will be designed so that someday they can be retrofitted to capture and store carbon. Right now, there's no way to capture carbon from coal-burning plants. But, McCall says, "we have confidence that technology will come along."

That, say TXU's critics, is hokum.
A long list of opponents

TXU is fighting not just the usual activists from the Sierra Club and Public Citizen but environmental groups like Environmental Defense and the Natural Resources Defense Council, which are ordinarily business-friendly. (With GE, DuPont, and others, they formed the coalition of big companies to lobby for carbon caps.)

Opposing the plants, too, are the Democratic mayors of Dallas and Houston, Texas celebrities such as rocker Don Henley, and prominent businesspeople, including real estate scion Trammell S. Crow and Garrett Boone, the chairman of the Container Store.

Albert J. Huddleston, a pro-business Republican who helped finance the Swift Boat television ads against John Kerry in 2004, is funding a lawsuit against TXU because he's concerned about mercury contamination of lakes and fish.

So intense is the fervor that a 50-year-old activist, Karen Hadden, went on a ten-day hunger strike last fall to call attention to the issue. "It is certainly an uphill battle," Hadden says, "but we're trying to keep the pressure on every front."

Opponents have sued Texas regulators as well as TXU. They are asking the Texas legislature to impose a moratorium on new coal plants. They have taken their case to Wall Street, where Merrill Lynch, Morgan Stanley and Citigroup, the lead underwriters for the plants, have come under fire. They are telling the TXU story in Washington as Congress moves closer to setting mandatory caps on greenhouse-gas emissions.

"TXU is becoming the poster child for why we need mandatory federal legislation," says Jim Marston, who runs Environmental Defense's Texas operations.

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