A city powered by waste

Kristianstad, Sweden is setting an example for the rest of the world, as highlighted in this NY Times article, Using Waste, Swedish City Cuts Its Fossil Fuel Use. After a ten-year effort, the city of 80,000 has cut off the use of oil, natural gas, and coal for heating and now relies on waste products from farming and food processing to generate biogas.

hulking 10-year-old plant on the outskirts of Kristianstad uses a biological process to transform the detritus into biogas, a form of methane. That gas is burned to create heat and electricity, or is refined as a fuel for cars.

Once the city fathers got into the habit of harnessing power locally, they saw fuel everywhere: Kristianstad also burns gas emanating from an old landfill and sewage ponds, as well as wood waste from flooring factories and tree prunings.

Though the lock on fossil fuel use in the U.S. appears to be unbreakable, sometimes workable solutions to our energy problems are right in front of our noses.

Building a Sustainable Motorcycle

As a long-time fan of two-wheel transport, I've been disappointed that the motorcycle world has lagged behind automotive advances in clean-running sustainability. This concept design by Jordan Meadows, highlighted by GizMag, does much to open up new possibilities for motorcycle design without abandoning sustainable principles.

Jordan notes:

"The concept is powered by a v4 engine running on bio diesel. This increases the range and MPG well above conventional gasoline bikes while running on a fuel which is more environmentally-friendly. Its frame and skin are crafted from recycled aluminum.

"This has the advantage of saving weight to enhance performance while reclaiming pre-used material. In the manufacturing process, the alloy is treated to patina and age naturally without expensive and harmful paint applications.

In this age of looming Peak Oil, motorcycles have a lot to offer for individual transport and designs incorporating bio diesel fuel deserve more attention.

Algae Powers Venice

Work is underway in the City of Venice to build a 40-megawatt power plant that runs on fuel made from algae. Expected to be finished by mid-2011, the power plant will supply roughly 50 percent of the city's electricity requirements.

As reported in ecoworldly:

The algae will be cultivated in laboratories and put in plastic cylinders where water, carbon dioxide, and sunshine can trigger photosynthesis. The resulting biomass will be treated further to produce a fuel to turn turbines. The carbon dioxide produced in the process will be fed back to the algae, resulting in zero emissions from the plant. “Venice could represent the beginning of a global revolution of energy and renewable resources. Our goals are to achieve the energetic self-sufficiency for the seaport and to reduce CO2 emissions, including those one produced by the docked ships”, says the president of the seaport of Venice Authority, Paolo Costa.

Finding ways to extract energy from nuisance plants and biomass waste may be an effective means to move a few steps closer to zero emission energy production.

Middlebury College Becoming Carbon Neutral

With a target to achieve carbon neutral operations by 2016, Middlebury College in Vermont has taken a major first step in that direction with the completion of a $12 million dollar biomass boiler and plant. Bill McKibben, whose organization 350.org is playing a major role in calling for a fair global climate treaty, participated in the opening ceremonies and gave a lecture on the importance of reducing greenhouse gas emissions/

At optimal capacity, which the plant is expected to reach over the next month, the facility will consume about three tons of wood chips an hour and meet about half the campus’s heating, cooling and hot-water needs. The other half will still be supplied by boilers that burn No. 6 fuel oil, but the overall campus use of such oil will be cut in half, from 2 million gallons a year to 1 million. As a result, the college’s carbon dioxide emissions will be reduced about 40 percent, or 12,500 metric tons a year.

Middlebury College is working to develop its own supply and wood chips on its surrounding property and also investigating the potential of geothermal energy for further reducing carbon emissions. More details are available in this article, orginally published in the Burlington Free Press.

The Distributed Generation Approach

We've grown up in a country where when you flipped the switch on the wall to light a lamp, the electricity came from a power source dozens or maybe hundreds of miles away. This centralized model of power distribution is beginning to give way to a smarter approach: distributed generation. Small wind farms, solar installations for a building or apartment complex, co-generation systems that heat a neighborhood, geothermal deployments that heat in the winter and cool in the summer.

In this article in The Nation, Think Solar, Think Small, Craig Rosen builds a case for abandoning the grand notions of a national backbone grid in favor of small-scale, community-oriented power generation. He writes:

To be sure, the romance of a renewable national grid is classic American thinking: a big problem requires a big solution. But the distributed generation approach (DG in energy lingo) is emerging from advances in solar technology and detailed studies of alternatives to big power-line projects. Consider what happened when Minnesota regulators looked carefully last year at the CapX 2020 project, a proposed cluster of new power lines costing up to $1.7 billion. A key purpose of the lines was to link Minnesota with proposed wind farms in the Dakotas. This is just the type of project favored by Pickens and other supporters of big electric transmission. But after examination the regulators found that Minnesota could develop many small 10-40 megawatt wind farms within the state totaling 600 megawatts--equivalent to a modern power plant--without any new transmission.

"We call it the '600 megawatts for nothing' study," said Mike Michaud, an engineer and consultant who formerly worked with the state regulatory staff. "There was no denying there were twenty spots on the existing grid [where] you could put generation for no cost at all." Michaud added that there is no guarantee the $1.7 billion transmission project would be restricted to clean power--it might in some cases be used to transport power from coal-burning plants.

He mentions a study by the Institute for Local Self-Reliance that determined half the states in the U.S. could be energy self-sufficient by harnessing renewables within their borders, satisfying a considerable fraction of their own energy needs.

Powerful food for thought...

Renewable Energy in the 21st Century

One of the refreshing parts of the following independent short, Unlimited: Renewable Energy in the 21st Century, is the perspective of the young people interviewed. If there is hope for the human population of this harried planet, it's in the upcoming generation's unvarnished, unblinkered viewpoints.

Dr. Chu Proposes Clean Energy Solutions

Dr. Steven Chu, under consideration as Energy Secretary in the Obama administration, offered his thoughts on clean energy paths during a speech at the National Energy Summit in early December. He places a premium on energy efficiency and cites "existence proofs" demonstrating ways we can reduce energy use without reducing our national wealth. His keen awareness of the dire threat posed by climate change and understanding of the breakthrough technologies that offer our best bet for handling future energy requirements may lead us in a more promising direction--if he is appointed...

Algae Power

Pond
Originally uploaded by lyle58

It grows almost anywhere, produces biofuel of high enough quality to power jet planes, and doesn't raise the cost of the food on anyone's dinner table. As reported in a story from McClatchy News, "Go green: Algae could be the next hot biofuel," many aerospace companies and airlines are betting on a future where flying machines can essentially be propelled by pond scum refined in a bioreactor.

Getting serious attention and support for algae as a biofuel, a role played by the Algal Biomass Organization, will be an uphill struggle. Their high-profile membership role includes Air New Zealand, Virgin Atlantic, and Boeing, but lobbyists for other forms of biofuel have a large head start in this realm.

"We are up against formidable opposition from competing interests," Jason Pyle, the chief executive of Sapphire Energy, said of resistance from ethanol and biodiesel groups during an algae industry meeting in Seattle earlier this fall.

Sapphire, a San Diego company, already has made a type of gasoline using algae that meets fuel quality standards, is compatible with current gasoline-manufacturing infrastructure and achieved a 91 octane rating.

Pyle said that current policy favored such alternative fuels as corn for ethanol or soybeans for biodiesel and provided only limited assistance to algae-related products. He said that one of the top priorities for the new Congress and the Obama administration in their first 100 days would be to write a comprehensive energy bill. Pyle said it was crucial that the algae industry make its presence known.

The article also notes that besides algae, jatropha (a bush well adapted to arid climates) shows much promise. Virgin Atlantic has already flown a 747 from London to Amsterdam on a fuel mixture made from jatropha.

Disgustingly Green Biofuel

pond full of green algae - and rubbish
Originally uploaded by Scorpions and Centaurs

It's ugly and smelly, but it makes a pretty good biofuel. Green algae has some unique properties, which is one of the reasons that AlgaeLink, a Netherlands firm, is attempting to commercialize algae production with their bioreactors.

In a Huffington Post entry, Green Energy: Cost-Efficient Process Expected to Turn Algae Into Fuel, the rationale becomes clear.

"This is the ultimate fast-growing organism," says Peter van den Dorpel, chief operating officer of AlgaeLink, which makes bioreactors for speeding reproduction. "Algae is lazy. It eats carbon dioxide and produces oxygen." It has no roots, no leaves, no shoots. "It grows so fast because it has nothing else to do. It just swims in the water."

Farming algae doesn't require much space or good cropland, so it avoids the fuel-for-food dilemma that has plagued first and second generation biofuels like corn, rapeseed and palm oil.

It can grow in fresh water, polluted water, sea water or farm runoff. It can purify a city's sewage while feeding on the nitrogen and phosphates in human waste.

Given the numerous problems in using agricultural crops for biofuel, plentiful, fast-growing algae could be a practical alternative that effectively addresses many of the key problems.

The Greening of the Hawks

With the urgency of climate destabilization growing daily, the purity of one's ideological calling card becomes less important than the need to phase out fossil fuels and phase in renewable energy as quickly as possible. As Laura Rozen reports in a Mother Jones article, James Woolsey, Hybrid Hawk, neoconservatives and Iraq war boosters are increasingly seeing the wisdom of clean energy. Though they may cloak the shift as a matter of national security, rather than a means of combatting global warming, many of them are becoming unlikely allies in the quest to beat oil addiction.

Rozen's dialogue with James Woolsey unearthed some interesting revelations:

Woolsey recalls the moment he started thinking seriously about energy as both an environmental and strategic issue. "I was sitting in my car in a gas line in Washington in '73, after the Saudis had declared an oil embargo on us and Israel was attacked," he says. "And I got mad." Energy issues have captivated him ever since. In the early '80s, he joined the Jefferson Group, an alternative-fuel salon founded on the Jeffersonian ideal "that the future of America is determined by the independent yeoman farmer."

An independent streak has run throughout Woolsey's 40-plus years in Washington. He has served in four administrations, both Republican and Democratic. In the twilight of the Cold War, he found himself increasingly identifying with Republicans on national security. He spent three years as a member of then-defense secretary Donald Rumsfeld's Defense Policy Board. When I met with him, he was expecting another career change, leaving the federal contractor Booz Allen Hamilton to join a California firm that invests in alternative-energy technology. He'd also just appeared in an anti-oil print ad for the American Clean Skies Foundation, a PR group started by a natural gas company.

With earth's future in the balance, we need all the clean energy promoters we can get.

Traversing the Biofuels Thicket

An article in Science last week caught everyone's attention. The title says it all: Use of U.S. Croplands for Biofuels Increases Greenhouse Gases Through Emissions from Land Use Change. In a world where many governments are mandating a shift to ethanol, this sounds like trouble. It's trouble on top of trouble, since we're hearing more about how growing corn, soybeans, and sugar cane to convert to ethanol is raising food prices.

The Science article spawned mainstream media interpretations with eye-catching headlines. The Los Angeles Times hollered: Biofuel crops increase carbon emissions. The New York Times warned: Biofuels Deemed a Greenhouse Threat. Bloggers and environmental sites picked up the excitement and soon lively discussion threads were debating whether switchgrass, algae, and cropland waste posed the same challenge, and whether co-generation plants could produce the ethanol cleanly when compared to the plants springing up in Iowa that are burning coal to generate ethanol from corn.

Many of the discussions, both in the mainstream media (once clear of the headlines) and blog posts, were knowledgeable and intriguing, posing solutions that only occasionally get a public airing. I was fascinating by descriptions of techniques for modifying your car to run on denatured alcohol and inventive ways you could then distill your own fuel in the backyard. And, if you're worried about destroying croplands, why not make biodiesel from algae using smokestack emissions.

A couple of hours sorting through the voluminous articles, posts, arguments, and counter-arguments left me a bit dazed. What was fairly clear is that we have many possible solutions to our energy needs. Some of them have been viable for 100 years or more (such as alcohol-powered vehicles). But, in spite of a wealth of workable solutions, governments around the world and large corporations hoping to hedge their bets on energy futures are pushing large-scale, often destructive projects. Whether clearing rainforests to grow more sugar cane for ethanol or diverting corn from being a food source to being a fuel, the impacts of these processes are abundantly evident.

And a solution that is immediately at hand, and doesn't require toppling a single tree, is improving energy efficiency. A longtime champion of fuel savings as an unheralded solution to many of our energy needs, Amory Lovins, co-founder of the Rocky Mountain Institute, sees profitability and smaller carbon footprints in using less fuel. A recent Newsweek article by Lovins, How to Fuel the Country While Saving the World, highlights a realistic path to conversing energy rather than squandering it.

Individual choices as well can make a huge difference as people adopt energy-efficient, low-impact lifestyles. We need to face that fact that change may not come from our prevaricating, slow-to-react national leaders, but local activism and lifestyle changes can induce energy savings from the community grassroots level. And on the individual level, especially when it comes to transportation, much can be done. Take a vacation by train this year instead of flying. Car pool to work. Get a bicycle or walk when running errands around town. Cut your weekly shopping trips to one instead of three. Think about getting an electric car--they're available if you do some hunting and more will be available in the near future. Talk your boss into letting you telecommute one or two days a week. Even simple steps like this can cut down your energy use for personal transportation 20 to 40 percent.

Personally, I'm going to look into converting my old SAAB 900 to run on alcohol and see what kind of vegetable matter already growing around my modest one acre lot might be fodder for the distiller. And, an alcohol-powered motorcycle might be fun...

High-Flying Algae

Previously outspoken global warming skeptic Richard Branson has seen the light. Branson, like many of the converted, has made fighting global warming a personal crusade and the billionaire founder of Virgin Airways is making a bid to power his jet fleet with biofuel.

As reported in Mother Jones, Virgin Airlines: Powered by Pond Scum, speculation abounds on what form of biofuel Branson will be using on the test run of a Boeing 747-400 from London to Amsterdam on a blend of 20 percent biofuel and 80 percent jet fuel. The test is scheduled for late February 2008.

Neither Virgin nor its partners, Boeing and GE, will say what biofuel the airline plans to use. Scott attributed the silence to "customer preference," indicating that more information could be released in the coming weeks. For now, he would say only that Boeing is investigating more than 20 different "feedstocks" for the production of biofuels, including a flowering plant called jatropha, canola, and the Brazilian babassu nut—all of which yield oils when crushed.

Another potential fuel source, one that Scott alluded to several times, is algae. "The biggest thing you get out of going to biofuels is the ability to reduce CO2 as the plants are growing," he explained. And along those lines, perhaps more than any other feedstock, algae represents a kind of holy grail to biofuel researchers. It's a fast-growing, hardy, single-celled organism that takes in carbon dioxide and nitrous oxide and releases oxygen, producing oil, sugar, and protein in the process. It's biodegradable, can grow in harsh weather, and holds an estimated thirty times more energy per acre than land-based feedstocks. The Energy Department estimated it would require 15,000 acres (an area about the size of Maryland) to grow enough algae to replace all of America's petroleum needs; it would require half the continental United States to accomplish the same with soy.

Algae is gaining increasing attention as a fuel source, so it will be illuminating to see if this is the fuel Branson is banking on. As a master of self promotion, Branson will undoubtedly have a moment in the spotlight to unveil his test results and focus the aviation industry on the possibilities of alternative fuels.

Biofuels are a Dead End (or Are They?)

As reported in the English version of SPIEGEL ONLINE, backlash at the negative effects of biofuel production is reaching a crescendo in Europe. Despite the fact the many governments across Europe have mandated a steady push toward gas and diesel made from plants, environmental group are marshalling forces to oppose this direction.

"The biofuels route is a dead end," Dr. Andrew Boswell, a Green Party councillor in England and author of a recent study on the harmful effects of biofuels, told SPIEGEL ONLINE. "They are going to create great damage to the environment and will also produce dramatic social problems in (tropical countries where many crops for biofuels are grown). There basically isn't any way to make them viable."

The evidence against biofuels marshalled by Boswell and other environmentalists appears quite damning. Advertised as a fuel that only emits the amount of carbon dioxide that the plants absorb while growing -- making it carbon neutral -- it actually has resulted in a profitable industrial sector attractive to countries around the world. Vast swaths of forest have been felled and burned in Argentina and elsewhere for soya plantations. Carbon-rich peat bogs are being drained and rain forests destroyed in Indonesia to make way for extensive palm oil farming.


Because the forests are often torched and the peat rapidly oxidizes, the result is huge amounts of CO2 being released into the atmosphere. Furthermore, healthy peat bogs and forests absorb CO2 -- scientists refer to them as "carbon sinks" -- making their disappearance doubly harmful.

Note that much of the opposition is directed at the impact of deforestation associated with biofuels. Fuel sources such as switchgrass, algae, and hemp can be grown and harvested without infringing on conventional agricultural lands, competing with food crops, or requiring deforestation.

Hemp is particularly promising, but the misguided prohibition of industrial hemp farming in America presents a significant hurdle to overcome. As detailed in this article posted by Yokayo Biofuels, automakers from back in the days of Henry Ford and Rudolph Diesel envisioned biomass fuels as central to automobile travel.

Despite the fact that men such as Henry Ford, Rudolph Diesel, and subsequent manufacturers of diesel engines saw the future of renewable resource fuels, a political and economic struggle doomed the industry. Manufacturing industrialists made modifications to the diesel engines so they could take advantage of the extremely low prices of the residual, low-grade fuel now offered by the petroleum industry. The petroleum companies wanted control of the fuel supplies in the United States and, despite the benefits of biomass fuel verses the fossil fuels, they moved ahead to eliminate all competition.


One player in the biofuel, paper, textile, as well as many other industries, was hemp. Hemp had been grown as a major product in America since colonial times by such men as George Washington and Thomas Jefferson and has had both governmental and popular support. Hemp's long history in civilization and the multitude of products that can be derived from this single plant has made it one of the most valuable and sustainable plants in the history of mankind. More importantly to the biofuel industry, hemp provided the biomass that Ford needed for his production of ethanol. He found that 30% hemp seed oil is usable as a high-grade diesel fuel and that it could also be used as a machine lubricant and an engine oil.

We have many solutions to the energy crisis at hand, but not enough wise leaders guiding our direction.

Algae to Biofuel: New Interest

An idea for a fuel source that sparked interest over 20 years ago is now getting a fresh look. Algae offers the potential to produce inexpensive transportation fuel and back in the late 70's and 80's twelve U.S. universities, funds by the National Renewable Energy Laboratory, studied 3,000 strains of algae until research money dried up in the 90's. As reported by the Environment News Service, one of the chief researchers at the time, Keith Cooksey, is a central figure in a new quest to tap both the CO2 absorption capabilities and fuel potential of brown algae.

"It's a very strange feeling," said Cooksey, now 72. "You don't usually have people bending your ear on what you did 20 years ago. Science doesn't work that way, but in this case, it did."

The revived interest in microalgae stems from conflict in the Middle East and the resulting focus on alternative fuels, Cooksey said.

"Our lab was one of three or four in the world doing research that nobody was really interested in," Cooksey said. "Now, suddenly lots of people are interested in it."

The oil companies, who may have been instrumental in quashing the earlier research, are now expressing significant interest in algae as we enter the post peak oil era.

The algal properties for sequestering CO2 make it especially attractive as a solution for transportation fuel.

Algal biodiesel is one of the only avenues available for high-volume re-use of CO2 generated in power plants. It is a technology that marries the potential need for carbon disposal in the electric utility industry with the need for clean-burning alternatives to petroleum in the transportation sector.

Already, a San Diego firm, Green Star Products, is working on agreements to construct commercial algae facilities that can offset carbon emissions, such as those produced by boilers in biodiesel plants. The trend definitely looks promising.

Biofuels Have Consequences

New analyses by researchers point to unintended consequences of increasing biofuel production, leading to environmental impacts potentially more damaging than fossil fuels. As reported in the Guardian Unlimited, if factors such as destruction of farmland and biodiversity conservation are included in the equation, biofuels based on certain crops (including corn and sugar cane) produce more risks than benefits.

As the article points out, differences exist between different crops:

Efforts to work out which crops are most environmentally friendly have, until now, focused only on the amount of greenhouse gases a fuel emits when it is burned. Scharlemann and Laurance highlighted a more comprehensive method, developed by Rainer Zah of the Empa Research Institute in Switzerland, that can take total environmental impacts - such as loss of forests and farmland and effects on biodiversity - into account.

In a study of 26 biofuels the Swiss method showed that 21 fuels reduced greenhouse-gas emissions by more than 30% compared with gasoline when burned. But almost half of the biofuels, a total of 12, had greater total environmental impacts than fossil fuels. These included economically-significant fuels such as US corn ethanol, Brazilian sugar cane ethanol and soy diesel, and Malaysian palm-oil diesel. Biofuels that fared best were those produced from waste products such as recycled cooking oil, as well as ethanol from grass or wood.

Given that many government initiatives are mandating a shift to biofuels, these impacts and risks should be cause to re-examine the rationale behind selecting one crop over another.

Bali and Biofuels

Despite urgings from a number of environmental organizations, issues related to biofuels did not get a thorough airing at the recent United Nations climate change conference in Bali, which ran from December 3rd to the 14th. Demand for biofuels has skyrocketed with many nations rethinking fuel sources to help limit greenhouse gas emissions, but the dark side of biofuels, the impact on food sources, deforestation, and land use, was largely missing from conference sessions and discussions.

As reported in an Inter Press Service article, Climate Change: Biofuels Scarce on Bali Menu, agricultural issues associated with biofuels have a significant impact on food availability:

‘’We are concerned about the pressure biofuel production is placing on the world’s food reserves. If you produce biofuel with food crops like corn, you won’t have it to meet food demand,’’ Jeff McNeely, chief scientist of IUCN said in an interview. ‘’The grain reserves of the world today are the lowest they have been in the last 10 to 15 years.’’

Similar views were expressed by the Food and Agriculture Organisation (FAO) in pamphlets made available at the U.N. agency’s display booth in the main conference venue. ‘’Food security (availability and accessibility) of the poor may be compromised by increased demand for energy crops,’’ it cautioned.

Currently, the biofuel industry is fed by corn, wheat, sugarcane and palm oil, among other crops. Close to 5,000 lt of biofuel can be extracted from one hectare of corn, 6,000 lt from a hectare of sugarcane and 4,500 lt from a hectare of palm oil, said Barbara Bramble of the National Wildlife Federation during the IUCN-hosted discussion.

A quote from the Netherlands environment minister provides a succinct summary of the issue:

And the main drivers of this demand, the European Union (EU), has admitted that a more sustainable policy is needed to meet a 2010 target of having 5.7 percent of its transport fuel from green sources. ‘’The negative impacts should be avoided,’’ said the Netherlands' environment minister Jacqueline Cramer. ‘’When we use biofuel for our cars, we might be destroying biodiversity and have negative impacts on food production and social and economic development.’’