Showing posts with label bio-fuel. Show all posts
Showing posts with label bio-fuel. Show all posts

Tuesday, July 23, 2013

Fossil Fuel Use Pushes Carbon Dioxide Emissions into Dangerous Territory

Increasing global emissions of carbon dioxide (CO2), a heat-trapping gas, are pushing the world into dangerous territory, closing the window of time to avert the worst consequences of higher temperatures, such as melting ice and rising seas.

Since the dawn of the Industrial Revolution, carbon emissions from burning fossil fuels have grown exponentially. Despite wide agreement by governments on the need to limit emissions, the rate of increase ratcheted up from less than 1 percent each year in the 1990s to almost 3 percent annually in the first decade of this century. After a short dip in 2009 due to the global financial crisis, emissions from fossil fuels rebounded in 2010 and have since grown 2.6 percent each year, hitting an all-time high of 9.7 billion tons of carbon in 2012.

Carbon emissions would have risen even faster were it not for the 7 percent drop among industrial countries since 2007—a group that includes the United States, Canada, Europe, Russia, Australia, New Zealand, and Japan. The United States, long the world’s largest emitter until it was eclipsed by China in 2006, cut carbon emissions by 11 percent over the past five years to 1.4 billion tons. The biggest drop was in emissions from coal—which is primarily used to generate electricity—as power plants switched to cheaper natural gas and as the use of carbon-free wind energy more than quadrupled. U.S. emissions from oil, mostly used for transportation, also dipped.

Carbon emissions from fossil fuel burning in Europe, as a whole the third largest emitter, fell 9 percent from 2007 to 2012. Emissions in Italy and Spain shrank by 17 and 18 percent, respectively. The United Kingdom’s emissions dropped by 11 percent to 126 million tons. Germany’s emissions fell by 4 percent to 200 million tons. These countries have been leaders in either wind or solar energy or both.

Russia and Japan are two industrial countries that did not see an overall decline in carbon emissions over the past five years. Russia had an uptick in oil use, increasing its emissions by 2 percent to 449 million tons. And in Japan, the quick suspension of nuclear power generation after the Fukushima disaster led to more natural gas and oil use, pushing emissions up 1 percent to 336 million tons in 2012.

CO2 emissions in developing countries surpassed those from industrial countries in 2005 and have since continued to soar. China’s carbon emissions grew by 44 percent since 2007 to 2.4 billion tons in 2012. Together the United States and China account for more than 40 percent of worldwide emissions. Emissions in India, home to more than a billion people, overtook those in Russia for the first time in 2008. From 2007 to 2012, India’s emissions grew 43 percent to reach 596 million tons of carbon. Carbon emissions in Indonesia, another fast-growing economy, have exploded, growing 52 percent to hit 146 million tons in 2012.

Although emissions from developing countries now dominate, the industrial countries set the world on its global warming path with over a century’s worth of CO2 emissions that have accumulated in the atmosphere. Furthermore, emissions estimates discussed here include only those from fossil fuels burned within a country’s borders, meaning that the tallies do not account for international trade. For example, emissions generated from producing goods in China destined for use in the United States are added to China’s books. When emissions are counted in terms of the final destination of the product, the industrial countries’ carbon bill increases.

On a per person basis, the United States emits 4.4 tons of carbon pollution—twice as much as in China. The highest per capita carbon emissions are in several small oil and gas producing countries. In 2012, Qatar spewed out 11 tons of carbon per person. Trinidad and Tobago is next with 9 tons of carbon per person, and Kuwait follows at 7.5 tons.

Fossil fuels are not the only source of CO2 emissions. Changing the landscape, for example by burning forests, releases roughly 1 billion tons of carbon globally each year. Brazil and Indonesia have high levels of deforestation and are responsible for much of the current carbon emissions from the land.

About half of the CO2 that is released through fossil fuel burning or land use changes stays in the atmosphere. The other half is taken up by the oceans or by plants. As more CO2 is absorbed by the world’s oceans, the water becomes more acidic. This change in ocean chemistry can strip away the building blocks of coral reefs, weakening an important link in the oceanic food chain. Scientists warn that the oceans could eventually become saturated with CO2, compromising their capacity to absorb our carbon emissions, with serious consequences for the global thermostat.

For some 800,000 years, the amount of CO2 in the atmosphere did not go above 300 parts per million (ppm). But in the 250 years following the start of the Industrial Revolution, enough CO2 built up to bring the average concentration to nearly 394 ppm in 2012. Throughout each year, the concentration of the gas fluctuates, reaching its annual peak in the spring. In May 2013, the CO2 concentration briefly hit 400 ppm, a grim new milestone on the path of climate disruption. Never in human history has the atmosphere been so full of this odorless and colorless yet powerfully disruptive gas.

CO2 acts like the glass of a greenhouse, trapping heat. Since humans began burning fossil fuels on a large scale, the global average temperature has risen 1.4 degrees Fahrenheit (0.8 degrees Celsius), with most of the increase occurring since 1970. The effects of higher temperatures include rising sea levels, disappearing Arctic sea ice, more heat waves, and declining yields of food crops.

More warming is in the pipeline as the climate system slowly responds to the higher CO2 concentrations. Reports from international institutions, such as the International Energy Agency, based on work by thousands of scientists emphasize that little time remains to cut emissions and avoid a climate catastrophe. The World Bank notes that absent any policy changes, the global average temperature could be 9 degrees Fahrenheit warmer by the end of this century, well above what human civilization has ever witnessed. More

 

Thursday, October 25, 2012

The Great Transition, Part I: From Fossil Fuels to Renewable Energy

The great energy transition from fossil fuels to renewable sources of energy is under way. As fossil fuel prices rise, as oil insecurity deepens, and as concerns about pollution and climate instability cast a shadow over the future of coal, a new world energy economy is emerging.

The old energy economy, fueled by oil, coal, and natural gas, is being replaced with an economy powered by wind, solar, and geothermal energy. The Earth’s renewable energy resources are vast and available to be tapped through visionary initiatives. Our civilization needs to embrace renewable energy on a scale and at a pace we’ve never seen before.

We inherited our current fossil fuel based world energy economy from another era. The 19th century was the century of coal, and oil took the lead during the 20th century. Today, global emissions of carbon dioxide (CO2)—the principal climate-altering greenhouse gas—come largely from burning coal, oil, and natural gas. Coal, mainly used for electricity generation, accounts for 44 percent of global fossil-fuel CO2 emissions. Oil, used primarily for transportation, accounts for 36 percent. Natural gas, used for electricity and heating, accounts for the remaining 20 percent. It is time to design a carbon- and pollution-free energy economy for the 21st century.

Some trends are already moving in the right direction. The burning of coal, for example, is declining in many countries. In the United States, the number two coal consumer after China, coal use dropped 14 percent from 2007 to 2011 as dozens of coal plants were closed. This trend is expected to continue, due in part to widespread opposition to coal now being organized by the Sierra Club’s Beyond Coal campaign.

Oil is used to produce just 5 percent of the world’s electricity generation and is becoming ever more costly. Because oil is used mainly for transport, we can phase it out by electrifying the transport system. Plug-in hybrid and all-electric cars can run largely on clean electricity. Wind-generated electricity to operate cars could cost the equivalent of 80-cent-per gallon gasoline.

As oil reserves are being depleted, the world has been turning its attention to plant-based energy sources. Their potential use is limited, though, because plants typically convert less than 1 percent of solar energy into biomass.

Crops can be used to produce automotive fuels, such as ethanol and biodiesel. Investments in U.S. corn-based ethanol distilleries became hugely profitable when oil prices jumped above $60 a barrel following Hurricane Katrina in 2005. The investment frenzy that followed was also fueled by government mandates and subsidies. In 2011, the world produced 23 billion gallons of fuel ethanol and nearly 6 billion gallons of biodiesel.

But the more research that’s done on liquid biofuels, the less attractive they become. Every acre planted in corn for ethanol means pressure for another acre to be cleared elsewhere for crop production. Clearing land in the tropics for biofuel crops can increase greenhouse gas emissions instead of reducing them. Energy crops cannot compete with land-efficient wind power. More

 

Tuesday, May 29, 2012

G8 Deaf to Climate Change Warnings by International

When the chief economist for the International Energy Agency (IEA) issues a dire warning, you'd think the world's leaders would sit up and take notice. If this statement by Fatih Birol last week wasn't a dire warning, then I don't know what is: "What I see now with existing investments for plants under construction... we are seeing the door for a 2 degree Celsius target about to be closed and closed forever."

 

A global rise in temperature of 2°C is widely considered to be a threshold beyond which catastrophic climate change is likely to occur; many scientists and governments consider 1.5° a safer bet. And we're talking here about catastrophic with a capital C -- for many communities around the world, climate change has already proved catastrophic.

So how did the leaders of the G8 richest countries respond to this warning at their summit in Camp David last week?

By speaking in platitudes, at best: "Different energy sources have different inherent risks and must be developed in a safe, efficient, and environmentally sustainable manner."

And by missing the point, at worst.

To keep that door to 2°C open, three things need to happen:

More renewables: We need to invest in renewable energy services like there's no tomorrow. (Literally!)

Displace Fossil Fuels: Simply adding more renewables to the mix isn't enough, they need to displace fossil fuels. Global investment in clean energy reached a record-breaking high of $260 billion in 2011. According to the IEA, however, energy demand is expected to rise by a third by 2035. While the share of fossil fuels in the total energy mix will shrink, without a dramatic change of direction our use of these climate-deadly fuels will grow in absolute terms.

Conservation and Efficiency: In addition to adopting policies which create incentives to invest in renewables, and disincentives to invest in fossil fuels (phasing out fossil fuel subsidies to start with), we need to conserve energy wherever possible, and to use energy more efficiently. More

 

Thursday, May 24, 2012

FINANCE-RE 2: Finance report and workshop

In 2011, the IEA-RETD commissioned and published the report‘Strategies To Finance Large-Scale Deployment Of Renewable Energy Projects: An Economic Development And Infrastructure Approach’.

The report concludes that In 2011, the IEA-RETD commissioned and published the report‘Strategies To Finance Large-Scale Deployment Of Renewable Energy Projects: An Economic Development And Infrastructure Approach’. The report concludes thatnew policy approaches are key to attracting massive flows of capital needed to scale up renewable energy. On April 17th 2012, a group of nearly 30 representatives from the banking and finance sector and government gathered in London to discuss the report’s findings as well as existing and possible new finance policy instruments, and their respective roles in mobilising new capital to the renewable energy sector. The study and workshop primarily addressed the role for governments in financing the large-scale deployment of renewable energy.

Policy brief

The main workshop findings are summarized in a policy brief. At this website you can download a short (one page) and longer (three pages) version of the policy brief.

Influencing the policy process

A key objective of IEA-RETD is to enhance the policy framework for accelerated deployment of renewable energy. One of the routes we use is empowering energy policy makers through the provision of information. As an example, the findings of the Finance workshop were directly plugged into Clean Energy Ministerial which was held in London on 25th and 26th April 2012. IEA-RETD continuously looks at suitable occasions to share policy recommendation with high level decision makers. More

 

Saturday, May 19, 2012

Wind, Solar, Coconuts: SIDS and Climate Change

Renewable energy is having a hard enough time becoming mainstream on the mainland, but when small island developing states, or SIDS, decide to take energy matters into their own hands – by even adding coconuts to their portfolio – one has to wonder: what’s the hang up for larger countries?

Besides some of the obvious factors, the primary factor being islands have relatively small populations and therefore demand less energy, islands states, particularly tropical islands, come ripe with plenty of sunshine, ocean wind and, of course, coconuts. What do coconuts and coconut palms have to do with renewable energy? Well, coconut palms not only supply coconuts, which are a renewable food source, but are a “naturally recyclable source of a wide range of products, including transportation fuel, oil … and fiber.”

Kokonut Pacific, an Australian company, has tapped into this iconic island market and has been relatively successful at getting island nation states to make use of coconuts and coconut palms in a sustainable, low-impact way. SIDS are beginning to see a self-sufficient economy developing, one that combines a renewable energy portfolio with economic and environmental sustainability.

Bold action and creativity, while commendable, nevertheless fails to account for the fact that climate change does not operate in isolation, but impacts the globe aggregately. The carbon released in the Canadian tar sands, for example, will inevitably influence sea level rise in the Pacific Ocean and there’s not much a small island can do to abate that.

Dire predictions in mind, island nation states are serious when it comes to climate change and they should be; islands like the Maldives are predicted to experience devastating effects of global warming, including the shocking realization that their islands could soon disappear entirely under rising sea levels. The lowest country on Earth, the Maldives, are comprised of 1,200 islands, the highest reaching merely 5 feet above sea level. With a population of 320,000, President Mohammed Nasheed has been very vocal in expressing his concern over climate model predictions on his nation. More