The End of Fossil Fuel: Crisis and Opportunity By Roar Bjonnes Synopsis: The real solution to the energy crisis is not simply alternative energy: huge forests of wind mills, solar panels on every roof top, and hydrogen cells in every basement. The real solution certainly includes alternative energy, but can better be summed up as a “whole systems solution.” We need a whole-new-systems- approach to economics, politics, culture, values, science, and yes, energy. Remember the old gasoline commercial, “I’ve got a tiger in my tank?” Remember the old novelty tiger tails that were available from Esso stations during that commercial’s hey days in the 1960s? If some of the world’s geological experts are right, the fuel tigers in our tanks of the future will soon be completely extinct. Just as extinct as dinosaurs. Just as extinct as that old gasoline commercial. Deep down, we all know that. Even those driving expensive, gas guzzling SUVs know that fossil fuels are a limited commodity. Nevertheless, most of us behave as if this nonrenewable resource will always be with us. No further
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
The End of Fossil Fuel: Crisis and Opportunity
By Roar Bjonnes
Synopsis:
The real solution to the energy crisis is not simply alternative energy: huge forests of
wind mills, solar panels on every roof top, and hydrogen cells in every basement. The
real solution certainly includes alternative energy, but can better be summed up as a
“whole systems solution.” We need a whole-new-systems-approach to economics,
politics, culture, values, science, and yes, energy.
Remember the old gasoline commercial, “I’ve got a tiger in my tank?” Remember the old
novelty tiger tails that were available from Esso stations during that commercial’s hey
days in the 1960s? If some of the world’s geological experts are right, the fuel tigers in
our tanks of the future will soon be completely extinct. Just as extinct as dinosaurs. Just
as extinct as that old gasoline commercial.
Deep down, we all know that. Even those driving expensive, gas guzzling SUVs know
that fossil fuels are a limited commodity. Nevertheless, most of us behave as if this
nonrenewable resource will always be with us. No further away than the next Shell or
Arco station. But, according to some experts, it’s time to reconsider. There’s a fuel crisis
looming on the earth’s smoggy horizon. The most pessimistic of them, such as geologist
Colin Campbell, estimate that soon there will be no more oil. The world fuel supply, he
claims, will peak by 2010 and be down to half that level by 2025-30. To top it off, huge
price increases will hit us after the peak.
The not-so-pessimistic experts, such as those from the US Geological Survey, estimate
that reserves discovered by 2030 could be twice as large as Campbell believes. John
Edwards of the University of Colorado also belongs in the optimist camp. He predicts a
global peak in oil production between 2030 and 2040. So, even according to the most
optimistic data, a future oil crisis is just around the corner.
The experts do agree on one thing. The grand peak of oil production is going to occur
when about half of the estimated ultimately recoverable reserves (EUR) of oil in the
world have been produced. According to the World Resources Institute’s Program on
Climate, Energy and Pollution the “great majority of these studies reflect a consensus
among oil experts that the EUR for oil lie within the range of 1800 to 2,200 billion
barrels.” And, writes, Jeremy Rifkin in his book The Hydrogen Economy, “the world has
already consumed more than 875 billion barrels of the total.” So, put on your seatbelts.
The Battle of Oil’s Armageddon may soon be upon us.
Hubbard’s Curve
How did the experts figure all this out? They employed the methodology of geo-physicist
M. King Hubbart. His thesis is as simple and graceful as his bell-shaped curve. In the
words of Jeremy Rifkin: [“Hubbart] argued that oil production starts at zero, rises, peaks,
when half the estimated ultimately recoverable oil is produced, and then falls, all along a
classic bell-shaped curve.” It sounds almost too simple, had it not been for Hubbart’s
convincing track record.
In 1956, Hubbart wrote a now famous paper that predicted the peak and decline of US oil
production. He predicted that US oil production would peak between 1965 and 1970. He
was right. Production peaked in 1970, and the US lost its role as the largest oil producer
in the world. Today, more than 60 percent of the recoverable oil in the US has been
produced. And, writes Rifkin, “using the same model, Hubbart estimated in 1971 that the
middle 80 percent of global oil production will be produced within fifty-eight to sixty-
four years, or less than one lifetime.” If Hubbard’s right, our increasingly energy-hungry
world will soon be on a slippery slide down his bell-shaped curve.
Oil and Geopolitics
Actor Viggo Mortensen, famed for his role in The Lord of the Rings trilogy, is clearly in
disagreement with George Bush about the reason the US went to war in Iraq. The T-shirt
he was wearing recently as a guest on the PBS talk show Charlie Rose said it all: NO
MORE BLOOD FOR OIL. The war in Iraq, according to him, was not, as Bush claimed,
about weapons of mass destruction and terrorism.
The oil experts may disagree about the timing of when the oil runs out, but they all agree
that most of the remaining “black gold” in the world is located under hot sand dunes in
the Persian Gulf. The five OPEC nations -- Iran, Iraq, Kuwait, Saudi Arabia and the UAE
—are the world’s leading producers of oil. The most prominent user of oil, on the other
hand, is the US. Although the US has only 5 percent of the world’s population, US
consumers guzzle down a whopping 26 percent of this indispensable liquid annually.
Surprisingly, though, the US imports a smaller percentage of oil from OPEC than it did
20 years ago. In the first 6 months of 2001, the US actually imported more from Canada
than from Saudi Arabia. So, is Viggo Mortensen wrong? Not necessarily.
The Russian president, Valdimir V. Putin, said in October 2001, in a “timely” statement
shortly after the World Trade Center attacks, that “Russia remains a reliable and
predictable partner and supplier of oil.” In reality, experts agree that Russia’s elite status
in the world’s oil market will be short-lived. According to the New York Times, we will,
in the next few years, see a decline in oil production in Russia, the North Sea, the
Alaskan north slope, the areas off the shores of West Africa, and other regions. The
countries in the Middle East will therefore soon become owners of the biggest stock piles
of barrels of oil around.
Here are the crude facts: There are forty super-giant fields of oil in the world, twenty six
of those are in the Middle East. Most importantly, while many of the oil fields in Russia
and the US are in decline, production from the black oceans of oil in the OPEC countries
are still ascending Hubbart’s elegant curve.
The Iraq war was as much motivated by geopolitical positioning as the wish to fight
terrorism, and surely more about the future control of crude oil than about finding
Saddam’s destructive weapons. In other words, 9/11 created the political climate needed
to go to war. Weapons of mass destruction were the pretext, and the long term goal was
to secure access to oil.
No surprise there. Historically, oil and recent wars have had an unholy alliance. The
airplanes of World War 1 was fueled by oil and thus, according to Lord Curzon, the
“allied forces floated to victory upon a wave of oil.” Hitler, desperate for oil, invaded the
Soviet Union during World War 2 in 1941. The Japanese attack on Pearl Harbor the same
year was also motivated by the need for oil.
The future flow of money from the West to the Middle East and a reverse flow of oil will
only heighten an already tense geopolitical situation. Some possible scenarios: The OPEC
nations will not be able to meet the demand of oil needed to be pumped into Europe, the
US and the rest of the world. Prices will soar, economies will shake. The Muslim
countries may use oil as a political bargaining chip and suspend production to countries
not supporting their political agenda. Such a scenario would be more likely if Muslim
fundamentalists staged a successful coup in Saudi Arabia or other OPEC nations. The US
military presence in the region could thus expand into a “permanent force,” which could
turn into a prolonged war between the Muslim Middle East and the Christian West. In
other words, more blood for the sake of oil. In the long run, it could lead to global
economic meltdown
Fossil Fuel and the Heavens
Oil has primed the pumps of industrial civilization for a little more than 100 years. It has
brought tremendous material progress and huge increases in wealth. It has also caused
much damage. Not the least to the environment above and around us—to our air and
atmosphere.
We all know that the burning of fossil fuels pollute. Just think smoggy cities. Just think
global warming. But it may get worse. While we soon might be running out of oil,
optimistic geologists and economists remind us that there are still plenty of fossil fuels
left. These are the dirty ones: coal, tar sand, heavy oil, and oil shale. The use of dirty
fuels in power plants and cars would increase the emission of carbon dioxide into the
atmosphere. Global temperatures will rise, the sea level will rise. Much earlier than any
of us would want to.
The US sits on the largest coal deposits in the world. Since the global instability after
September 11, the US coal industry has gained support in Washington to increase
production. Some experts even claim that these environmentally dirty deposits will last
for 300 years. However, new research by Geologist Craig Hatfield shows that reserves
would only last for about 64 years. Hatfield also notes that a ton of coal will yield little
fuel to keep America’s SUVs running—only 5.5 barrels of crude per ton. In comparison,
it would take two tons of tar sand to produce one barrel of oil.
On a global scale, it is estimated that these dirty fuels constitute one-third of the world’s
total oil and gas reserves. But their use, however, would be costly to the global
environment. Increased water use that would help increase water shortages and migration
of sludge pollution in soil and groundwater, are just some of the environmental problems
associated with mining and processing of tar sand and heavy oil.
Many environmental experts believe our atmosphere, and thus our climate, could become
our worst calamity. Synthetic oil production from oil shale results in 39 percent more
CO2 emissions than from producing crude oil. Producing the same from coal, results in
72 percent more CO2 emissions.
Worldwide annual emissions of carbon dioxide are expected to increase by 3.5 billion
tons, or 50 percent, by the year 2020, according to Randy Broiles, an executive for
ExxonMobil Corp. He also projects that global energy use will rise by 40 percent as the
world population increases and economies grow. The use of such fuels will result in the
speeding up of global warming. Fossil fuel civilization will be under airborne attack.
Global warming may slowly cook us alive from above. Industrial society’s greatest asset
will thus become its greatest threat.
Fossil Fuel and the Earth
We are literally eating fossil fuels. So proclaims Dale Allen Pheiffer, a science writer for
From the Wilderness Publications. “However,” he writes, “due to the laws of
thermodynamics, there is not a direct correspondence between energy inflow and outflow
in agriculture. Along the way, there is a marked energy loss.” Jeremy Rifkin agrees.
According to him, “modern agriculture has been the least productive form of agriculture
in history.” (page 157) From a sustainable energy standpoint, that is.
The Green Revolution, with its enormous increases in the use of pesticides and fertilizers,
resulted in a tremendous amount of food available for human consumption. However, the
majority of energy it took to produce that extra food came from fossil fuels. Modern
agriculture is so wasteful, in fact, that a modern, high-tech can of corn contains ten times
less calories than it takes to produce. While a can of corn contains 270 calories, it takes a
Mid-western farmer 2,790 calories of fossil fuel to power the machinery, produce the
fertilizers and the pesticides to get that can of corn to the supermarket.
Ironically, the Green Revolution is not only bankrupt as an energy user, and therefore
unsustainable, its enormous increase in production has not come close to fulfilling its
promise: to alleviate world hunger. The Green Revolution’s supporters maintain, of
course, that poverty and hunger is caused by the failure of traditional agriculture in the
third world. But according to Frances Moore Lappe and Joseph Collins, the Green
Revolution has instead destroyed the very foundation needed to create balance between
population, local economies, and natural resources in the first place. So, while the Green
Revolution increased the total availability of food in the world, modern society has failed
to address the unequal access to food and food-producing resources. It is therefore
unlikely that the anticipated Second Green Revolution—with its combined increase of
fossil fuel agriculture and bio-technology—will do much better to alleviate hunger,
decrease our dependency on fossil fuels, and to safeguard the environment.
The increased use of artificial fertilizer and pesticides has had tremendous negative
effects on the environment. It depletes the native soil of nutrition and vital organisms and
causes pesticide runoff into the groundwater. It is estimated that nitrite pollution caused
by overuse of fertilizer now accounts for half of our water pollution. (page158)
In terms of energy use, one of the worst offenders of modern industrial farming is cattle
production. Today, one-third of the world’s agricultural land has been converted from
growing grain and vegetables to growing feed grain for cattle and other livestock. It takes
about 260 gallons of fossil fuel to feed a family of four meat eaters annually. When that
fuel is burned, it releases as much CO2 into the atmosphere as an average car releases in
6 months. (page 160)
So, as modern food consumers, we are literally gulping down fossil fuels by the gallons.
In 1994, it took 400 gallons of oil annually to feed each American. Of that total, 31
percent was used to manufacture fertilizer, 19 percent went to the operation of field
machinery, 16 percent for transportation, 13 percent for irrigation, and the rest for
pesticide production, crop drying and to feed livestock.
Thus, if we consumed a largely vegetarian diet, transformed our highly centralized,
fossil-fuel-dependent agricultural complex into a more sustainable and localized form of
agriculture, we could easily cut down the fossil fuel consumed by food production in half.
Instead of eating fossil fuels, we need to start consuming renewable energy from the sun.
The Ecology of Energy
The earth is a living organism. There is a symbiotic relationship between the flora and
fauna of the earth and the atmosphere. This realization, although still controversial, is
perhaps the most important scientific breakthrough of our time. This theory was first
introduced in the book Biosfera in 1926 by Vladimir Vernadsky, and more recently
expanded upon by James Lovelock and Lynn Margulis in the form of the Gaia
hypothesis. They argued that the earth is a self-regulating living organism. Although this
insight rings deeply true to many of us, it has been difficult for reductionist scientists to
accept such a holistic concept of the earth.
One of the key insights to the Gaian theory is the relationship between oxygen and
methane. When the oxygen in the atmosphere rise above a tolerable level, microscopic
bacteria are “miraculously” triggered to start producing more methane. The increased
methane is absorbed into the atmosphere, reducing the oxygen content until a steady
balance is again reached. This constant feedback loop between small living creatures and
the geochemical content and cycles act in an intricate union. This organic amalgamation
is what maintains the Earth’s climate and environment as well as preserving the earth’s
life. Regrettably, the massive increase in the burning of fossil fuel has now become a
direct threat to this living organism.
The earth is also a finite organism, receiving its energy to create life through
photosynthesis from the sun. Fossil fuels are a byproduct of photosynthesis. Over a
hundred millions years ago, during the time of the dinosaurs, dead plant and animal
matters decomposed and were deposited under deep layers of earth. These prehistoric
basins, on land and in shallow waters, are what we today exploit to fuel our cars and
homes with. But, as Hubbart’ curve pointed out, these deposits are quite finite, it is just a
matter of time before we will run out of this precious black gold. This process of entropy
is called the second law of thermodynamics, another important breakthrough of modern
science.
The first law of thermodynamics states that all energy in the universe is constant. The
second law states that all energy moves in one direction, from usable to unusable. If our
use of energy is solely based on converting stored energy from the earth—whether coal,
oil, or wood—the second law of thermodynamics will apply. The wood shortages of
Middle Age Europe and the shortages of agricultural land during the Roman Empire are
apt proofs of the increased entropy created when this law is ignored.
But what about Gaia, the living organism we live and breathe on? Does it not maintain a
high level of energy, and does it not seem to defy the second law of thermodynamics and
of entropy? Science teaches us that the laws of thermodynamics only apply within a
thermodynamically "closed" system, in which no free energy can enter from outside the
system. Whether the universe itself, for instance, is a thermodynamically closed system,
is up for debate. Most scientists believe it is, and so its entropy inevitably increases. But
according to Eastern mysticism, the “sun” that supplies the universe with free energy and
thus ensures that it will never run down, only change its form, is Consciousness—the
source of all energy, life and evolution.
Life on earth, however, is surely not a thermodynamically closed system--it is constantly
receiving free energy in the form of sunlight and solar energy. Life on earth is capable of
channeling this free energy to do work and thus to decrease entropy and actually move
from disorder to a higher state of organization.
The evolution of life on earth does not violate the Second Law of Thermodynamics--it
merely uses available free energy (the sun) to delay the inevitable thermal death of the
solar system.
While the earth is using free energy from the sun to decrease its entropy, the solar system
as a whole is experiencing increased entropy, and will inevitably die out as the sun uses
up all its free energy and reaches heat death. But that will take a few billion years, quite a
bit longer time than it will take to deplete the earth of fossil fuels.
Thus an alternative energy plan must, in part, utilize the sun’s free energy. Whenever that
is not possible, we must utilize low entropy energy sources, such as hydroelectricity, geo-
thermal energy, methane gas, ethanol, etc. In theory, if it was possible to tap into the core
of the earth, we could have an unlimited supply of energy. Maybe there are other ways of
supplying earth with unlimited energy, truly unlimited energy? Some scientists believe
so, and they are in fact attempting to tap directly into consciousness itself and thus create
zero sum energy.
The Ethics of Energy
Fossil fuels are high entropy energy sources. Their time on Hubbart’s curve is just about
up. The case has been scientifically made. There is also an ethical dimension to this
realization. The environmental crisis and globalization has made us painfully aware that
our planet is a limited place, and, if we are to survive, we better share its resources. Those
who realize this have grown from ethnocentrism and geocentrism to a worldcentric
worldview. This is the pinnacle of our ethical worldview: this planet belongs to all of us
—not just people, but plants and animals as well, and, if we are to survive and thrive
together, we need to share and use the planet’s energy resources in a sustainable way for
one and all.
As David Fleming writes, “In the heat of the coming oil shock, [these] Green ideals will
be forged into hard economic truths, as the energy crisis devastates the global market.” In
order to survive this predicament, we need to start using low entropy alternatives. We
need to start depending on renewable energy. In fact, we should have started yesterday—
no, long before yesterday.
Even though it is late, and the stakes are higher than ever before in human history, we
have some advantages that people before us did not have.
For the ancient Romans, the end-time came at around 600 AD. The slow but brutal force
of entropy, in the form of deforested land, eroded soil, and impoverished urban and rural
areas played a large role in crushing this mighty empire into environmental, economic,
and political defeat. Many experts believe that the Mayans experienced severe
environmental limitations when their empire fell as well. And, during the Middle Ages,
Europe suffered greatly due to lack of timber for fuel and for construction. Our ancient
forefathers did not know what we know today—that the earth, our precious Gaia, is a
small green island with limited physical resources. Neither did they have the eco-
scientific insights and the eco-ethical values that are becoming more and more global in
scope today.
The Alternative Energy Grid
We cannot think of an alternative energy economy without a renewable energy
infrastructure consisting of solar panels, wind mills, bio-diesel, hydro, wave technology,
methane, geothermal energy, hydrogen fuel cells, ethanol, and more. So, what have we
achieved in this area, and where do we need to go?
In the year 2000, the renewable energy leader in the world was not Holland or Denmark
—two countries well known for their large and highly visible wind farms—but the
Philippines. This impoverished, tropical country of thousands of islands produces 23
percent of its total electricity needs from renewable sources. El Salvador, another third
world country, is right behind at 22 percent, while Denmark’s production stands at 16
percent. In contrast, the US produces only 2 percent of its electricity needs from solar,
wind and geothermal sources. This is slightly below the global average, which was 2.4
percent in 2000. (www.nationmaster.com)
Interestingly, so-called third world nations may emerge as the natural leaders in
alternative energy. Because of the relative simplicity of their technology and
infrastructure, they will not have to dismantle a large, outdated industrial complex. They
can jump into the renewable economy virtually over night. They can switch from
kerosene lamps, coal and oil to a decentralized, alternative energy economy virtually over
night, and thus avoid the same environmental problems as the industrialized nations have
caused.
Below are the main renewable energy sources available today:
Solar: Photovoltaic (PV) cells are the most common and well known source of
alternative energy. Solar electric energy demand has grown consistently by 20-25% per
annum over the past 20 years. This has been against a backdrop of rapidly declining costs
and prices. This decline has been driven by a) increasing efficiency of solar cells b)
manufacturing technology improvements, and c) economies of scale. Still, PV power is
two to five times more expensive than electricity generated from fossil fuel. Japan is the
nation with the most solar panels per capita today. Switzerland and Germany are
following closely behind.
PV cells have proven to be well suited for a decentralized economy, especially in
countries with abundant sun shine. Solar cells can generate at-point energy for homes,
farms, and industry. Solar energy can also be produced in large scale regional plants
using conventional electric grids. One such project is a $48 million solar project in the
Philippines which will produce electricity for 400, 000 homes, sixty-nine irrigation
systems and ninety-seven drinking eater systems. Another such mega-solar-project is
planned by Enviromission in the Australian outback. This proposed solar tower will stand
at a height of one kilometer and will cost one billion Australian dollars. It is thought that
the structure could provide enough electricity for 200,000 homes and will save more than
700,000 tonnes of greenhouse gases.
Some optimistic solar experts believe that solar (and other renewable) energies will
produce between one-third and one-half of all global energy needs by 2050. Other experts
argue that such an output is simply not enough. Unless we radically change our lifestyle
and economy over the next couple of decades, we will run out of fossil fuels and
experience the worst energy crisis the world has ever seen.
Potential: Solar energy is “unlimited” and the perfect energy generator in a decentralized
economy based on self-sufficiency. The future of solar energy is therefore undoubtedly
bright.
Challenge: To produce radically more effective PV cells at lower cost, especially for the
third world.
Wind: When sunshine is converted into energy through atmospheric circulation, we get
strong winds that powers highly efficient wind mills. Indeed, wind is currently the most
cost-effective form of renewable energy. The European Wind Association predicts that
wind mills can produce 10 percent of global electricity needs by 2020. In some European
countries, including Germany and Denmark, wind energy accounts for over 15 percent of
generated electricity.
Jeremy Rifkin writes that “a study prepared by Germanischer Lloyd and Gerrad Hassan
estimates that the wind-generating potential along the coastal regions of the Baltic and
North Seas could produce enough wind to provide the electricity needs of the entire
European continent.” Many developing countries have also tremendous potential to
utilize wind energy. India is today the world’s fifth leading producer of wind energy. By
2030, India plan to produce an equivalent of 25 percent of current electricity needs.
Potential: Energy from wind mills have a huge global potential, especially in windy
coastal areas and mountain regions.
Challenge: Wind mills can be noisy in urban areas, they kill birds, and some people find
them aesthetically unattractive. As with solar energy, the main challenge for the wind
energy industry is to construct more efficient wind mills.
Hydro: Hydroelectric power is a renewable source of energy which creates no pollution.
Yet hydroelectric dams can be detrimental to the local fish population, such as salmon in
the US Pacific Northwest. Hydroelectric dams also disturb the ecology when land is
submerged. India’s widespread dam construction, for example, is controversial due to the
displacement and consequent impoverishment of millions of people when replaced from
their villages. Still, as in Norway, hydroelectricity can be harnessed from waterfalls and
rivers without much damage to people or environment. Hydroelectric power can also be
harnessed from small creeks and dams for at-point use in private homes or on farms.
Today, hydroelectric power is the largest generator of renewable electricity in the world.
More than 20 countries receive over 90 percent of electric power from hydro plants.
Bhutan and Paraguay are the world’s leaders with 100 percent production, and countries
like Norway, Uganda and Zambia are not far behind with 99 percent of domestic
electricity needs produced from hydro. Another 38 countries produce approximately 65
percent of electricity needs with hydro, and more than 40 countries produce around 35
percent.
Potential: Most of the large hydroelectric plants have already been built, so the main
potential for the future will be in creating small, super-efficient generators for creeks and
small dams.
Challenge: To create more efficient small generators for creeks and small dams. P. R.
Sarkar has argued that it would be more effective in a decentralized economy to create
small rather than large dams for local hydroelectric energy generation and irrigation.
Hydrogen: Hydrogen has been touted as the energy elixir of the future. Jeremy Rifkin’s
bestselling book The Hydrogen Economy argues that “the harnessing of hydrogen and
fuel cells will spawn a new economic revolution in the 21st century.” Hydrogen has
undoubtedly great potential in creating a global source of sustainable energy. However,
unlike fossil fuels or the sun, hydrogen is not a direct source of energy—it must be
produced either by the use of fossil fuels or by renewable energy and then stored in fuel
cells. Currently, natural gas is used to produce hydrogen via a steam-reforming process
and a catalytic converter that strips away the hydrogen atoms.
Enter Hubbart’s curve: we may not have enough natural gas or oil past the year 2030 to
produce large quantities of hydrogen. Electrolysis, a process that uses electricity to split
hydrogen and oxygen atoms is thus the more sustainable alternative, since electricity can
be produced with renewable sources. The next challenge is to produce more efficient fuel
cells that can store ever larger quantities of hydrogen.
Currently, some 400 billion cubic meters of hydrogen are produced globally, the
equivalent of about 10 percent of global oil production in 1999 (Rifkin, 182) In 1999,
Iceland unveiled an ambitious plan of becoming the first hydrogen economy in the world.
Iceland is rich in geothermal energy, which will be used to create hydrogen, and the plan
is to run the entire country on hydrogen by 2020.
Potential: Hydrogen fuel cells have the potential to produce enough renewable energy to
serve global needs far into the future. Fuel cells are currently two and a half times more
efficient than combustion engines, and the only effluents produced are electricity, heat
and pure distilled water. Fuel cells are perfect mini-power plants for a decentralized
economy and could potentially be installed in homes, cooperatives, schools, stores,
hospitals and on farms. Hydrogen cars
Challenge: Fuel cells are currently quite expensive. Creating hydrogen via electrolysis
using renewable energy is still in its infancy. So the future of a sustainable hydrogen
economy depends on creating cheap hydrogen using an ever-efficient grid of renewable
sources such as sun, wind, hydro, and geothermal.
Waves: Over the last few decades viable schemes for harnessing energy from waves
have emerged, mostly in the UK, Norway and Sweden. Ocean waves occur due to a
transfer of energy from the sun that effect the motion of wind over the sea. Wave power
devices absorb this energy to generate electricity. These floating generators can be fixed
to the sea bed, offshore, or constructed at the sea’s edge on a suitable shoreline. It is
estimated that wave energy could potentially produce up to 15 percent of UK’s domestic
electricity needs, but this technology is still in its infancy. However, some Norwegian
companies are planning to construct large wave plants in the Pacific Ocean.
Other renewable sources of energy: There are few more alternative sources of
renewable energy with great potential in a localized, self-sufficient economy, including,
bio-diesel from plant oil, methane gas from organic waste, and ethanol from corn.
Bio-diesel has significant environmental benefits in terms of decreased global warming
impacts, reduced emissions, and greater energy independence. Various studies have
estimated that the use of 1 kg of bio-diesel leads to the reduction of some 3 kg of CO2.
Bio-diesel is extremely low in sulphur, and has high lubricity and fast biodegradability.
(European Biodiesel Board, www.ebb-edu.org) With a few inexpensive adjustments, bio-
diesel can be used by all diesel cars and trucks. It is becoming increasingly popular in
Europe, where Germany produced 750 million gallons of bio-diesel in 2002. However,
bio-diesel can never become the fuel of choice for the future. Some statistics from the US
will illustrate this: The current use of diesel in the US is 40 billion gallons annually,
while maximum production of bio-diesel by US farmers could never exceed more than
3.5 million gallon annually. (David Coltrain, Kansas Cooperative Development Center,
paper presented at Risk and Profit Conference 2002, Kansas, USA)
Methane gas is produced in an anaerobic environment when organic matter, such as
manure breaks down. Small local methane gas production facilities are already operating
on dairy farms and in some cities of Europe where buses are fueled with methane gas.
Ethanol is used as an automotive fuel by itself and can be mixed with gasoline to form
what has been called "gasohol." The most common blends contain 10% ethanol and 85%
ethanol mixed with gasoline. Over 1 billion gallons of ethanol are blended with gasoline