100 MPG - CalCars and the beauty of high-mileage ideas

By Jay Inslee and Bracken Hendricks Special to the Apollo News Service

To see the future of the American automobile, take a spin down to Corte Madera, California, and introduce yourself to the CalCars boys.

This group of rebels met one sunny day in April 2004 in the garage of a typical condominium ten miles north of the Golden Gate, determined to roll out a car that could be “fueled” by plugging it into a wall at night with a standard extension cord and run on gas when needed. It was a Toyota Prius when they started and a symbol of an American revolution in automobiles when they finished.

The group was led by Felix Kramer, an entrepreneur who had an idea as big as his mustache. In 2003, after selling his Internet start-up, he cast about for his next adventure and landed on an audacious quest: to revolutionize the auto industry.

He knew that gas-powered, internal combustion cars were destroying the atmosphere and deepening our addiction to oil, and that things had to change. He stumbled on the work of Andy Frank at the University of California at Davis and Bob Graham at the Electric Power Research Institute. They are brilliant inventors who had radically re-thought how to power a car and created a blueprint for the first hybrid you could charge on the grid. Kramer decided to build a mass market for this change.

“Our whole auto configuration was decided by just a very few people, a handful of big auto company execs and the government. They had fouled up,” he said. “It was time to expand the number of Americans who had a hand in this future. So I decided to build a large group of folks who would demand the production of a clean, efficient car. To do that, I knew we had to first build such a car. So that’s exactly what we did.”

A multi-talented group of innovators answered Kramer's Internet call. They met in a garage owned by one of the new members of the team. Then they put the Internet to work to generate “open source” ideas they could incorporate into the design. Two years and a thousand feet of wire later they had converted a 2004 Prius into a car capable of driving on nothing but electricity from the garage wall jack for its first twenty-five miles each day. Kramer's plug-in may be the first car ever built “over the Internet.”

Secret SwitchIt was not an easy project. They succeeded only after discovering a secret switch that had literally been hidden in the American version of the Prius hybrid, which allowed the car to run in an all-electric mode, never relying on the gasoline engine. That discovery triggered Felix’s revelation that if he could boost the battery capacity, he could create a hybrid with monstrous mileage. So they went to work with a collection of tools, $700 worth of old nickel hydride batteries, and a growing collection of car enthusiasts who hovered around the garage at all hours.

When they finally drove their number out of the driveway and down the street in September 2004, Kramer felt justifiable pride. “All kinds of people want this kind of car: people like generals who care about security; environmentalists who care about the planet; and municipalities who care about cost.

“But it seems the last people in the world to ‘get it’ are the big car companies,” Kramer added. “Now that our CalCars cars are on the road, and these cars are being built in various places around the country, our vision is going to force changes. That is now happening.”

Plug-in, Second GenerationIt sure is. Kramer now has been tooling around California for 15,000 happy miles in his second-generation plug-in. It uses lithium ion batteries, gets a hundred miles per gallon of gas, and costs one cent a mile to run. Compare that to nine cents a mile to fuel a typical car with just gas. It is a miser of a car.

Kramer owns the first plug-in hybrid ever commercially sold in America. Plug-in hybrids are not yet rolling off assembly lines, but custom conversions like Kramer’s — built by EnergyCS, a small start-up in California that is beginning to make plug-in conversions available to the public — are being sought by an ever-growing market. Many more will follow.

Kramer takes joy in the car’s simplicity. He plugs a 19-inch cord in the rear bumper into a standard extension cord in his garage at night. Tooling around town, he is in all-electric mode for the first twenty-five quiet miles, covering the majority of his commutes gasoline free. He delights when he goes into forums of energy experts and shows them the little cord he uses.

“This is all the infrastructure we need to remake our car world,” he says. “We don’t have to build huge infrastructure for hydrogen. We can just ship clean electricity over the wires.”

What’s more, Kramer can smile as he drives, because with every mile he is saving CO2 emissions. He says, “When the car is in all-electric mode, it is putting out 60 percent less CO2 than a normal gas car, even taking into consideration all the CO2 coming out of the stacks of the plants that generate the electricity. Even if we never improve our electrical grid a bit, and even if people drive way more than the batteries can hold, some studies have shown this car can reduce CO2 by 36 percent. This is the best thing on the global warming front going.”

As an added bonus, Kramer’s wonder car has an attribute no mortal and few machines can claim—it gets better with age. “The electrical grid feeding my car is going to get cleaner over time,” he explains. “Instead of burning coal that releases carbon, we will be relying more and more on wind power, solar power, and geothermal. So the fuel—electricity—driving my car is going to get cleaner every year. How many cars do you know that get better the longer they are on the road?”

What About Detroit?Can Detroit deliver anything comparable?

We asked Tom and Ray Magliozzi, better known as Click and Clack, the Tappet Brothers, stars of the nationally syndicated radio talk show Car Talk. Their opinions are not exactly nuanced: “For thirty years now the companies have put everything they had into more power instead of more efficiency.”

Ray, who has a degree from MIT—as does Tom—and now runs Ray’s Garage in Cambridge, Massachusetts, elaborates: “The technology has been incredible, but it’s all about power. If the companies had put into efficiency what they have put into power, we would be driving cars getting sixty miles per gallon now. They have done fuel injection and computer-controlled engines but have not put those gains into efficiency. Any high schooler could have done better if they had wanted to.”

Indeed, Detroit cannot lead the way into the future by tinkering at the margins of its old business model. Nor can it get away with disingenuous promises of cleaner cars and ad campaigns that show gas-guzzling SUVs bringing us closer to nature. It will have to adopt the same spirit of innovation as Felix Kramer and his plug-in crew.

With General Motors now poised to release the plug-in hybrid electric Volt, it just might be that the revolution Kramer sought to provoke is starting to take hold. Only time will tell if the big three are ready to get serious about radical new designs that break our addiction to oil. But the technology is fast approaching that can help US auto companies make the leap beyond the small efficiency gains that have dominated recent fights, and finally launch us into a future of clean and efficient energy.

A National Security BenefitWhen plug-in technology is combined with a flex-fuel engine that can burn gas or biofuels, it can actually get vastly higher mileage per gallon of gas. Even without using biofuels, it reduces our dependence on foreign fuel, because 97 percent of the electricity it consumes is produced from domestic energy sources. Kramer’s car is virtually free of Saudi Arabian influence.

Excitement for hybrids is not confined to the road. Utilities salivate over the prospect of turning the storage capacity of plug-in batteries into an adjunct to the electrical grid. Power plants may soon be able to feed their juice into our car batteries at night when demand is lowest, using base electric load more efficiently and storing energy in our cars while they are parked for use during the day. In this way, our cars may one day serve to level out electrical supply and demand on the grid as we slumber.

Roger Duncan, vice president of Austin Energy, a Texas utility, is working to make plug-ins a regular feature of the grid. He has organized a massive national grassroots initiative called Plug-In Partners, which has demonstrated the demand for these cars with pledges from literally hundreds of cities, businesses, and non-profits from Chicago to Phoenix, from California Edison to the U.S. PIRGs (Public Interest Research Groups). Chicago is retrofitting 850 plug-in hybrids, and New York State is converting the 600 hybrids in its fleet to plug-ins.2 Several companies are already converting hybrids for commercial sale using the ideas of these pioneers.

A garage gave birth to Hewlett-Packard and the electronic age, not to mention rock and roll and the modern entertainment industry. A garage may also have given birth to the future of personal transportation and the age of the plug-in car.

Global Climate Change Response Can Spur $7 Trillion in Clean Energy Investment by 2030

Global Climate Change Response Can Spur $7 Trillion in Clean Energy Investment by 2030

CAMBRIDGE, Mass., Feb 05, 2008 (BUSINESS WIRE) -- Increasing public concerns about climate change -- and its potential economic and political security consequences -- are driving public policy and private investment to bring clean energy technologies from the fringes of the global energy industry to the center of activities as quickly as possible, a new analysis by Cambridge Energy Research Associates (CERA) has concluded.

The result of this rising public and private momentum is an increase in worldwide clean energy investment that could surpass US$7 trillion by 2030 in cumulative real 2007 dollars, according to the CERA report Crossing the Divide: The Future of Clean Energy.

"We are seeing a major shift in public opinion, reinforced by the expectation that carbon policies could fundamentally change the competitive landscape of the global energy business," said Daniel Yergin, CERA Chairman and IHS Executive Vice President. "This is providing a vital impetus that is moving clean technology across the great divide of cost, proven results, scale and maturity that has separated it from markets served by mainstream technologies and processes."

Key Insights

"The rapidly advancing new paradigms of climate change, energy security, and policy implementation and cooperation among the United States, the European Union, China and others will produce a broad range of opportunities, risks and pitfalls as the modern energy industry increasingly moves to adopt clean technologies that will be part of the alternative, low-carbon pathway to the energy future," said Robert LaCount, head of CERA's Climate Change and Clean Energy Group.

"All participants in the global energy business, from traditional incumbents such as electrical power companies and major oil and gas companies to new entrants such as venture capital firms," he added, "will play a role in shaping this alternative energy future. CERA's Crossing the Divide analysis offers a number of key insights about potentially significant clean energy opportunities for almost every energy sector participant:

-- There is already a "bubbling" of clean energy clusters - Some places are becoming concentrations of political, technical, institutional and financial clean energy specialization and experience. Examples include Brazil in biofuels, Germany in photovoltaic (PV) technology, Spain in wind technologies.

-- Renewable power technologies are poised for substantial growth - Wind will make the largest gains, followed by solar power and biomass -- despite near-term bottlenecks in wind turbine manufacturing, supply shortages in silicon, and competitive pressures from escalating component costs.

-- Government policy remains a key driver for clean energy advancement - Putting a price on CO2 emissions, setting mandates, and providing subsidies all work to kick-start clean energy technologies by overcoming the economic advantage of conventional technologies. The challenge in the years ahead is to provide subsidies in a way that ensures that these technologies get off the drawing board and are able to wean themselves from support - allowing for a phase-out rather than an increase in subsidies - as they become commercially viable on their own.

-- Conventional emission-free technologies - Nuclear and hydroelectric generation will account for most of the clean energy impact for the next decade, and almost half the gross clean power additions by 2030.

-- Disruptive technology potential - Clean energy technology could have disruptive rather than incremental impact. Modular and distributed PV could disrupt traditional central-station models of electricity production and distribution. Breakthroughs in cellulosic ethanol can disrupt the traditional vehicle fuel system if scale, logistics, and costs prove manageable. Conventional biofuel feedstocks, such as grains and oilseeds, may also produce serious unintended consequences such as disruption in global agricultural prices as well as land and water use patterns, as well as a policy backlash.

-- Asia demand and manufacturing - Rapid economic growth may push Asian energy needs from 30 percent of current global demand to 40 percent by 2030; combined with its manufacturing cost-competitiveness, this could make Asia a nexus for clean energy technology research, development and equipment production.

Clean Technology Drivers

Across the entire range of potential scenarios, Crossing the Divide identified the primary drivers that affect the pace of clean energy technological development and its commercial success:

-- Oil & natural gas prices - Directly affect the economics of clean energy technologies, energy security concerns, biofuels development, renewable power and conventional clean energy.

-- Government policy - Central to development of all clean energy technologies, with sustained government support ensuring ongoing research, seed money and confidence for investors; the sustainability of support policies shapes the timing and ultimate success of new technologies, particularly to the degree to which it encourages private investment.

-- Pace of technology innovation - Movement of technologies from the fringe to the center of the energy business is heavily dependent on policy support and private investment, which, in turn, is strongly affected by fossil fuel price cycles, carbon pricing, and expectations.

-- Economic growth - Affects energy demand and carbon emissions as well as the political and financial support for research and development of new clean energy technologies.

-- The Big Three: "The Big Three" in terms of energy consumption - the United States, the European Union and China - will have a major impact on development of "clean energy," along with certain other countries, particularly Japan and Brazil.

Scenarios Findings

CERA's analysis used a scenarios framework to assess the winners and losers among various clean energy technologies and help define key risks and opportunities as companies seek to place their technology bets. The analysis addressed new and conventional energy technologies that can provide energy with a minimal carbon footprint and facilitate greater energy security. These technologies include biofuels, renewable power technologies, carbon capture and storage, nuclear and hydropower. While CERA's scenarios provide widely different outcomes, advances occur in at least some clean energy technologies across all three scenarios.

In the Launch Pad scenario, strong energy prices, growing public pressure to control CO2 emissions, and a stable investment environment coalesce to drive the development and adoption of a wide range of clean energy technologies. Renewable power capacity grows from three to 16 percent of global capacity and biofuels grow from less than two percent to 16 percent of the total road transportation fuels market.

In contrast to Launch Pad's broad-based advancement of clean energy, the Global Fissures scenario highlights how weaker global economic growth coupled with increasing global tensions and political insecurity could lead to an uneven outlook for clean energy technologies. In the Global Fissures scenario, renewable power capacity grows to seven percent of the global power mix, but nuclear power experiences little growth and carbon capture and storage technology fails to develop commercially by 2030.

The Asian Phoenix scenario describes a world where the global balance of geopolitical and economic power shifts to Asia, expanding Asia's role as both consumer and exporter of clean energy technologies. Although concerns over climate change influence political agendas, a global patchwork of uncoordinated policies result in inconsistent government support programs leading to periods of fits and starts for private investment flows, and limiting technological and commercial breakthroughs. Renewable power grows to 10 percent of global capacity and biofuels capture seven percent of the market for road transportation fuels.

"Crossing the Divide and the CERA scenarios highlight that the future of clean energy can take several paths," said Lawrence Makovich, CERA vice president and senior advisor. "This demonstrates how important not only technology, but also well-crafted energy policy are to shaping the energy future."

The Crossing the Divide analysis combined the collective input of study participants with CERA's broad research capabilities and deep expertise in a range of energy segments and geographic regions to help gauge the expectations for clean energy and align them with reality. Highlights of each technology include the following:

-- Biofuels. Development of biofuels is rapidly growing around the world, driven by rising global oil prices and transportation demand. Support for biofuels is also driven by interest in promoting domestic agricultural sectors. Based on the state of current technologies, however, biofuels promise to displace a relatively small fraction of petroleum, owing to twin constraints:

competition for land with food crops and relatively high production costs. More petroleum could be displaced if next generation technology is developed that converts more plentiful nonfood biomass into fuel and expands the useable crop base, but significant cost and technology hurdles must first be overcome. Biotechnology may surprise and shine a light on the appropriate solutions.

-- Wind. Given its relatively low cost compared with other renewable power alternatives, wind is the leading renewable technology in power generation worldwide in terms of installed capacity. As favorable onshore resources are harnessed, the key to maintaining wind capacity growth will be movement to low-speed onshore sites and offshore wind development. The majority of all new wind capacity (approximately 80 percent) is expected to come online in Asia and Europe, with almost all of the remainder in North America.

-- Biomass. Europe continues to lead the way in biomass power growth for electric generation through its bioenergy policy initiatives. Cost-effective, dedicated biomass crops would create a breakthrough for this technology.

-- Geothermal power. Current trends indicate that new geothermal power projects should increase installed capacity by 50 percent or more in the next five years as the number of countries with geothermal power operations roughly doubles to over 40. Enhanced geothermal systems (EGS), commonly known as "hot rocks," may hold the greatest potential for expanding the role of geothermal energy. EGS takes advantage of the heat locked in impermeable rock layers deep below the earth's surface through artificially created geothermal reservoirs. Although EGS technology shows great promise, it is still in a formative stage of development and must overcome a number of challenges before becoming a viable energy source.

-- Solar PV. Solar enjoys fast growth globally, with installations increasing from just over three GW in 1996 to 6.5 GW in 2006. Solar PV is primarily a decentralized source of power generation that produces electricity directly from sunlight without moving parts or the need for significant balance-of-plant equipment. It is versatile in terms of applications, ranging from integration in lighting products and building materials to modular power installations that provide power to the grid. Its versatility and falling manufacturing costs make solar PV attractive to the investment community looking for clean energy technologies with near-term market potential. Still, solar PV-generated electricity costs significantly more than conventional power generation and requires subsidies to compensate.

-- Concentrating solar power (CSP: 11.25, +0.07, +0.62%). CSP is a large-scale, centralized power production technology that concentrates sunlight to generate heat that is used to produce steam-generated electricity. Although solar PV is more widely known, CSP technologies are actually much less expensive and more appropriately sized for utility-scale generation. However, they still require subsidies in order to compete in the marketplace. Emerging CSP technologies can be equipped with thermal storage systems that reduce the impact of solar energy's intermittence.

-- Ocean. The enormous energy potential of ocean resources is unlikely to provide a significant contribution to world electricity supplies for the next few decades owing to the early-stage nature of the technology. Successful demonstration projects, cost reductions and policy development on standards for resource use will be required to advance the growth of ocean energy. However, successful projects could have an impact on a local level, and within the next half century a tidal power plant with a capacity as big as or bigger than the Hoover Dam or the Yangtze River Dam is possible.

-- Carbon capture and storage (CCS: 23.09, +0.14, +0.61%). Carbon capture and storage is a combination of technologies that holds promise of bringing fossil fuel combustion into the clean energy portfolio. If done on a large enough scale, capturing and effectively storing CO2 before it reaches the atmosphere could fundamentally alter the carbon footprint of conventional fossil fuels. Even in the best case, CCS is at least two decades away from large scale deployment. Carbon capture technology is likely to advance well ahead of storage technology. Technical hurdles to carbon capture will be addressed in technology trials over the next decade while the associated political, regulatory and legal issues are worked out.

-- Nuclear. Nuclear power is an important part of the world's current electricity mix, providing 15 percent of global power generation. Future prospects for new nuclear construction, buoyed by growing concerns over climate change and energy security, could support new nuclear build of up to 700 GW of installed capacity by 2030. However, many challenges lie ahead with regard to policy, capital costs, waste management -- and public opinion. There is always the risk of a major safety incident or a successful terrorist attack which could seriously impede the progress of nuclear power.

-- Hydropower. Many developing economies and power systems are following the path set by the developed economies and maximizing their domestic hydroelectric potential to support economic development. Like nuclear, hydropower currently provides a significant portion of global power generation (16 percent) and is also poised for growth over the next few decades. Particularly in developing economies in Asia and Latin America, up to 600 GW of new capacity could be added through 2030. Hydropower engenders controversy, however, based on the social displacement and environmental impacts associated with large-scale dams and reservoirs.

About CERA (www.cera.com)

MASS - Commonwealth Solar Program is Open!

Massachusetts Secretary of Energy and Environmental Affairs Ian Bowles has announced that Commonwealth Solar, the state's new program of rebates to encourage the installation of solar photovoltaic (PV) power is now accepting applications from businesses and homeowners looking to reduce the cost of putting solar panels on their roofs.

Announced in December, the program, which makes use of existing renewable energy funds, is expected to result in the installation of more than 27 megawatts (MW) of solar power capacity over the next four years. Commonwealth Solar is part of Massachusetts Governor Deval Patrick's pledge to increase installed solar power from 5 MW today to 250 MW by 2017. This was made in April in connection with Evergreen Solar Inc.'s commitment to locate its first full-scale U.S. manufacturing facility in Massachusetts.

"Commonwealth Solar is open for business, and that's good news for the economy and the environment," Bowles said. "Solar energy is a key component of the clean energy economy we are developing here in Massachusetts, and a rebate is the most efficient, cost-effective way we can make solar power more affordable. Now is the time for businesses and homeowners to find out what Commonwealth Solar has to offer.

"Information on how to get a Commonwealth Solar rebate can be found at http://www.commonwealthsolar.org/.

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The Year in Energy

Advanced biofuels, more-efficient vehicles, and solar power top the most notable energy stories of 2007.

The Rise of Biofuels

Corn ethanol production has grown so fast, driving up corn prices and driving down the price of ethanol, that some producers are having trouble breaking even. But an energy bill signed into law last week that requires greater use of biofuels will provide new incentives for both production of biofuels and research into new technologies. Reaching the ambitious goals set by the law will require new technologies for transforming biomass into fuel. (See "Oil from Wood," "Breaking Ground on Cellulosic Ethanol," and "BP's Bet on Butanol.") Others are developing ways to convert biomass into hydrocarbon fuels that could be more practical than ethanol. (See "Making Gasoline from Bacteria.") In the current print issue, Technology Review's editor takes a close look at the technology needed to replace a significant part of gas consumption with renewable fuels and the costs of doing so. (See "The Price of Biofuels.")

Cheaper solar panels

Investors are rushing to pour money into solar energy companies to capitalize on an industry that's growing by leaps and bounds. That brought good news for solar technology this year, as the wraps came off a number of technical advances that could eventually make energy from the sun as cheaply as conventional sources. These include new types of panels that use cheaper materials or cheaper manufacturing techniques. (See "Making Cheaper Solar Cells" and "Solar Power at Half the Cost.")

One company in particular, San Jose-based Nanosolar, attracted attention for its decision to build an enormous manufacturing facility for making inexpensive thin-film solar panels (see "Large-scale, Cheap Solar Electricity"), only to see delays in production. But by the end of the year the company had started manufacturing solar panels for its first customer.
Researchers are also investigating more distant possibilities for solar, including using the exotic physics of quantum dots and mimicking the complex chemistry of photosynthesis to help make solar power ubiquitous. (See "TR10: Nanocharging Solar" and "Supplying the World's Energy Needs with Light and Water.")

Managing Carbon Dioxide

Researchers are making progress in finding ways to use carbon dioxide as a source of raw materials for fuel, by taking a cue from biology. (See "Making Gasoline from Carbon Dioxide" and "Turning Carbon Dioxide into Fuel.") But these technologies are still far from eliminating the need to sequester large amounts of carbon dioxide in order to reduce greenhouse emissions. (See "The Precarious Future of Coal.")

Clearing the Way for Alternative Energy

If alternative energy sources such as wind and solar are ever to provide a big chunk of our electricity, we'll need a better system for storing and distributing that power. That's because these sources of energy, unlike coal or nuclear power, are intermittent: solar panels only make power when the sun shines. New battery systems (see "Fixing the Power Grid") and thermal storage systems (see "Storing Solar Power Efficiently") could help.

More-Efficient Vehicles

GM made news this year with its plans for a new electric vehicle that gets extended range, compared to other electric vehicles, from an onboard generator. (See "Electric Cars 2.0.") Other companies are developing similar vehicles. But technologies for boosting the efficiency of conventional internal combustion engines could play a big role in helping automakers meet new fuel economy standards. (See "The Incredible Shrinking Engine" and the blog, "Better Fuel Economy on the Way.")


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US Congress Expected To Extend Renewable Energy Tax Credits

US Congress Expected To Extend Renewable Energy Tax Credits

By Ian Talley Of DOW JONES NEWSWIRES WASHINGTON

The U.S. Congress is expected to extend expiring renewable energy production and investment tax credits in the new session, industry experts and lawmakers say.

Although the White House has objected to offsetting the proposed multi-billion dollar credits by cutting tax breaks given to the oil and gas industry, lawmakers may include the credits as part of an economic stimulus package or a tax credit extension package, insiders say.

A $21 billion energy tax package that would have cut tax breaks to the top five major oil companies in order to fund renewable energy projects fell victim to repeated veto threats from the White House and wasn't included in a major new energy law passed late last year.

Solar companies such as Evergreen Solar (ESLR) and Emcore Corp. (EMKR), and wind turbine manufacturers such as Vestas Wind Systems (VWS.KO), Gamesa Corporacion Tecnologica (GAM.MC) and Siemans Power Generation, a unit of Siemans AG (SI), count on the credits to build demand in the U.S. The industry says it needs the credits - some of which expire at the end of the year - to offset the costs of expensive electricity generation projects.

Senate Majority leader Harry Reid, D-Nev., said in December that Congress would vote again on the tax proposal "more quickly than you think," and Sen. Jeff Bingaman, D-N.M., chairman of the Senate Energy and Natural Resources Committee, said it had become a matter of urgency for many firms in the sector.

Jaime Steve, legislative director for the American Wind Energy Association, said the credits were "vitally needed to keep momentum going in the industry and keep creating jobs."

"If the credit is not extended in the next two to three months, we'll see a downturn in the industry," he said.

Lawmakers are now searching for ways to include the two major tax provisions - a renewable energy production credit and an investment credit - into other legislation, including a farm bill and fast-developing legislation that would give a boost to the economy.

Democrats have said they would work with President George W. Bush to develop a proposed major stimulus package to counter growing fears of a recession.

"The No. 1 opportunity is in an economic stimulus package," AWEA's Steve said, adding, "That would be a perfect place in an renewable production tax credit." The cost would depend on how long the credits were extended. In the energy tax package, the renewable production credit would have lasted three years, costing around $6 billion.

"We're looking for extension of current law as long as possible...because it provides certainty for investors," Steve said.

Although Steve said he believes paying for the offsets by cutting tax breaks to the oil industry is likely off the table, Mark Kibbe, a senior policy analyst at the American Petroleum Institute, is still watching Congress carefully.

Kibbe, a tax specialist at API, said he'd heard of several alternative options to include the renewable tax credits, including a tax-extenders bill that Congress has come to pass on a near annual basis that prolongs a raft of non-permanent but popular tax rules.

"I don't think they'd move the entire (energy tax) package over, but the the Section 45 renewable energy production credit is a logical one and would not be such a stretch," Kibbe said.

The API analyst said he'd also hear of another creative solution: the Federal Aviation Administration's reauthorization of the collection of excise taxes, which expires in March. If Congress lets the reauthorization expire for a day, and then reauthorizes the agency's authority, Kibbe said it could be considered new revenue, "and they get to spend all those billions of dollars as offsets."

Turning Carbon Dioxide into Fuel

Researchers are harnessing solar energy to convert carbon dioxide into carbon monoxide, which can be used to make fuels.

Could concentrated solar energy be used to reverse combustion and convert carbon dioxide back into gasoline? That's what scientists at Sandia National Laboratories, in Albuquerque, NM, aim to find out by building a novel reactor that can chemically "reenergize" carbon dioxide.

The device uses a two-stage thermochemical reaction to break down carbon dioxide to produce carbon monoxide, says Nathan Siegel, a senior member of technical staffat Sandia's Solar Technologies Department and one of the researchers developing the technology. "Carbon dioxide is a combustion product, so what we're doing is reversing combustion," he says. The carbon monoxide can then readily be employed to produce a range of different fuels, including hydrogen, methanol, and gasoline, using conventional technologies.

Within the Sandia reactor, invented by Sandia researcher Rich Diver, is a ring of a cobalt-ferrite ceramic material, which is essentially made up of iron oxide and cobalt. A parabolic solar concentrator directs sunlight onto the ceramic material, heating it to around 1,500 °C and causing it to give up oxygen.


As the ring continually rotates, the reduced material passes into a second, separate chamber containing carbon dioxide. Having given up its oxygen, the ceramic reacts with the carbon dioxide, stealing oxygen atoms off it. The result is the production of carbon monoxide. The process is continuous, so that the oxidized ceramic once again passes back into the solar chamber where it is again reduced. "It will work with either carbon dioxide to make carbon monoxide or with water to make hydrogen," says Siegel.


At least that's the theory. The Sandia group has carried out proof of principle demonstrations of various stages of the device but has yet to show that they all work together. The team is building a prototype that will be ready for testing by late spring. "It's 95 percent built," says Siegel.


The cobalt-ferrite ceramic was originally developed in Japan and is easy to produce. To maximize its effect, the material is constructed into a matrix of crisscrossing one-millimeter-diameter rods. This has the effect of producing a high surface area with which to react with the carbon dioxide.


By next June, the researchers expect to have the reactor's performance mapped out, and if it does as well as they expect, a practical version could be available within five years.


"At the moment, we are looking at getting carbon dioxide from industrial sources," says Siegel. The real potential, however, is to capture carbon-dioxide emissions and reuse them as fuel. "We're also looking at ways to pull carbon dioxide out of the air," he says. This would allow the reactor to be mounted anywhere, sucking up the atmospheric greenhouse gas and turning it into fuel. However, Siegel stresses, this is at a much earlier stage of development.


Despite the huge potential, there is currently very little research into finding ways to harness solar energy to produce carbon monoxide from carbon dioxide, says Siegel. But such technology deals with two problems directly: putting carbon dioxide to good use, and finding a way to make the best of the sporadic nature of solar energy. "It offers a way to store this solar energy and use it when you want it," he says.


It's excellent work and, in principle, scientifically quite possible, says Christian Sattler, of the Institute of Technical Thermodynamics at the German Aerospace Center, in Cologne. "The question is, at what efficiency?" he says. "How much energy does it take to carry out this reduction? It may be more efficient to use the solar energy for direct power production."

By Duncan Graham-Rowe

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