Showing posts with label Energy. Show all posts
Showing posts with label Energy. Show all posts

Friday, May 28, 2010

Cambodian Factories Seek Eco-Friendly Power Alternatives

May 27, 2010
By SIMON MARKS
International Herald Tribune (Paris, France)


PHNOM PENH — Almost every day for the past 15 years Cheang Vet, a roadside mechanic near Phnom Penh’s Cambodian-Japanese Friendship Bridge, has witnessed the constant flow of traffic making its way in and out of the capital by its main northeasterly access point.

But in the last decade, as the number of people employed in Cambodia’s garment sector has increased from about 25,000 in 2000 to around 300,000 today, he has noticed a steady increase in one particular type of vehicle entering Phnom Penh: heavy-load trucks carrying huge stacks of firewood.

“There are at least 10 trucks a day carrying about two and a half tons of firewood,” Mr. Vet estimated. “They tell me they are on their way to the garment factories on the other side of the city.”

The majority of the country’s garment factories — making clothes for brand names in the U.S. and European markets — use firewood to heat old-fashioned boilers that produce hot water for dying fabrics and steam for ironing.

Some factories depend on firewood to supply all of their energy needs, according to industry experts.

Indeed, the use of firewood for energy is widely considered better for the environment than fossil fuels, as trees can be replanted to offset carbon emissions released during combustion. But replanting plans are limited here, while demand for firewood is growing.

In the 1990s, large areas of Cambodia’s rubber plantations — planted by the French in the early 20th century — had aged to the point where their yields of latex, the sap from which natural rubber is made, had dropped considerably, requiring extensive replanting.

Felling old trees made large quantities of rubber wood available to the emerging garment and brick factories in the Phnom Penh region.

But, according to a report released last year by the French environmental organization Geres, this source of timber is running out.

The Geres report found that 69 of the 310 garment factories then registered with the manufacturers’ association said they were using rubber wood to produce steam for ironing and dyeing clothes. In total, Geres estimated that garment factories burned around 65,000 cubic meters, or about 2.3 million cubic feet, of wood every month.

But a “critical period” started in 2009, the report said, “where rubber wood will not be available in sufficient quantity to supply the industrial sector its energy requirements.”

Energy experts and environmentalists say that timber is now being obtained instead from the country’s remaining natural-growth forests.

Graeme Brown, a private consultant working on natural resource management issues, said that a heightened demand for new rubber plantation acreage was leading to forest clearance, creating a “ready supply of natural forest timber.”

With the costs of wood-fired heating far lower than the cost of electricity from the national grid — power prices in Cambodia are among the highest in the region because of poor infrastructure and the use of inefficient diesel generators — there are fears that demand for firewood will continue to grow.

Still, there are signs that Cambodia’s garment factories, after a decade of efforts to improve labor standards, are now starting to concern themselves with environmental issues, too.

Albert Tan, vice president of Suntex, a Singaporean-owned garment factory in Phnom Penh, said the company had brought in a team of engineers from Malaysia to assess ways the factory could use less energy.

Mr. Tan said that wasting less energy would allow the factory to burn less wood and would also reduce dependence on diesel-powered backup generators in the event of a power cut — a frequent occurrence in Cambodia.

“There are not many results yet, but some studies are going on to see how best we can be eco-friendly and take care of the environment,” he said.

The owners of the factory, which produces about 2.5 million pieces of clothing per month for export to client brands in the United States and Europe, are also considering installing a gasification unit that would convert biomass or organic waste into cleaner-burning, more efficient synthetic gas, he added.

Rin Seyha, managing director of SME Renewable Energy, in Phnom Penh, said his company had been approached by several garment factories looking to use gasification.

But the technology available in Cambodia is still insufficient for large energy users like clothing factories, he said, and potential clients are often put off by the cost of importing larger units.

A gasification plant with a one megawatt generating capacity, imported from India, costs $300,000. Mr. Seyha’s company sold just one plant to a garment factory last year and so far in 2010 has aroused interest in three more. After 70 factories shut down during the global financial crisis, there are now about 250 factories operating in Cambodia.

Cutting down on emissions from burning wood and protecting the forests would help the industry’s image with environmentally conscious consumer abroad. But profit-focused private investors often balk at the first hurdle when it comes to introducing more environmentally friendly technology, because they consider the costs involved to be too high, said Yohanes Iwan Baskoro, country director for Geres.

Investors need to be educated to understand that improved technology can achieve a profitable return for companies in the long run, he said, adding that as well as fiscal incentives from the government, the banking sector also needs more encouragement to provide loans for environmental improvement.

“If we can’t show that there is profits in it for them I don’t think they will participate,” Mr. Baskoro said.

Julia Brickell, resident representative in Phnom Penh for the World Bank’s private-sector lender, the International Finance Corp., also said lenders needed to be persuaded.

“Financial institutions may focus too much on the short-term costs of investing in energy-efficiency improvements and not immediately see the longer-term benefits for their potential clients in terms of cost savings,” Ms. Brickell said. “This may impact their willingness to provide financing for technological upgrades.”

Garment workshops often operate from leased premises and lack fixed assets to provide collateral for loans, she added. “This may also result in reluctance on the part of the financial institutions to extend financing for energy efficiency improvements.”

Still, some progress is being made. A factory in Kandal Province, near Phnom Penh, which supplies garments to Hennes & Mauritz of Sweden and Marks & Spencer of Britain, is a case in point.

Wood is still being used to heat the factory’s boilers, but the company is using its staff house to test energy saving technologies on a small scale.

“Every factory wants to save costs, and our biggest cost is electricity,” said a manager at the factory, who spoke on condition of anonymity because, she said, bosses in Hong Kong had asked her to keep a low profile.

The company, one of Cambodia’s largest with nearly 3,000 workers, has installed solar panels on the roof of its staff house, where 50 air-conditioned rooms accommodate the management. To discourage energy waste, anyone using more than 200 kilowatt-hours of electricity per month is charged 50 cents per extra kilowatt-hour used.

Marks & Spencer is advising the factory through its so-called Plan A corporate strategy, to focus on improving environmental standards. More efficient lighting, better insulation and improved temperature control are three measures that have been identified.

At another factory, in Phnom Penh, where roughly 1,000 workers make luxury menswear for export, a program to fit energy-saving light bulbs is under way. With 3,500 neon lights in operation throughout the day, a sizable reduction in electricity consumption is expected, the factory’s general manager said, also speaking on condition of anonymity.

But balancing the need for increased productivity — Cambodia’s work force is among the least productive in the region, reflecting poor training levels — against the investments needed for better environmental standards is an almost impossible challenge, this manager said.

“The bottom line is this industry — in particular the garment sector — is the toughest sector in terms of competition,” he said. “Some people just can’t afford to make some of the changes that are being recommended.”

And according to several economic analysts and consultants here, who declined to be named because of the delicacy of the issue, it is not in the interests of manufacturers to show they can afford to install environmentally friendly technologies, because their brand-name clients may respond by putting pressure on them to lower their costs.

Still, Kanwarpreet Singh, chief representative for the H&M clothing brand in Cambodia, said that the industry as a whole was looking into newer and cleaner technologies to improve its image.

“If you use a lot of firewood, then it is not good for the environment,” he said. “As a company we try to encourage other sources of energy.”

Although Hennes & Mauritz factories use firewood as an energy source, Mr. Singh said, the company was evaluating alternatives.

For now, though, those are still unclear, and as Cambodia struggles to recover from a slump last year in exports to key U.S. and European markets, improving energy standards in factories is not a priority, he said.

Garment exports, accounting for 90 percent of Cambodia’s total exports, dropped almost 20 percent by value in 2009, to $2.38 billion.

“Nowadays one has to compete globally,” said Permod Kumar Gupta, chief technical adviser for the United Nations Industrial Development Organization in Cambodia. “We have to think, in the coming years, if we are not able to compete economically, environmentally and socially then difficulties will remain in how to compete with countries like China.”

Regardless of environmental concerns, Cambodia’s garment sector desperately needs to improve energy efficiency, with some factories spending up to $1,700 to produce a ton of clothing — more than three times the amount in neighboring Vietnam.

“In terms of energy efficiency, the sectors that are using biomass are particularly wasteful,” said Mr. Gupta.

Friday, January 18, 2008

Vietnam to invest $600 million to build Se San 1 and Se San 2 hydroelectric power plants

Viet Nam Invests in Building Hydro Power Plants in Cambodia

Thursday, January 17, 2008
Trading Markets

PHNOM PENH - Viet Nam has decided to invest US$600 million USD to build two hydro power plants on the lower Se San river in Cambodia's Ratanakiri and Kratie provinces.

The Lower Se San 1 and Lower Se San 2 hydro power plants are designed to have a combined capacity of over 500MW, according to the Cambodian Ministry of Industry, Mines and Energy.

Thursday, August 23, 2007

With an expected agreement on criminal extradition, will VN ask to repatriate any Khmer Krom people from Cambodia at will?

23/08/2007
Deputy PM calls Cambodian trip a success

VietNamNet Bridge – Deputy Prime Minister Pham Gia Khiem on August 22 said his visit to Cambodia has met its goals of building a stronger relationship with the neighbouring nation.

Khiem made the statement at the end of his first ever visit to Cambodia in the capacity of Deputy Prime Minister-cum-Foreign Minister, where an emphasis was placed on the demarcation of the border that divides the two countries.

He said “My visit and the 9th session of the joint committee (of Vietnam and Cambodia) were positive. Cambodian leaders confirmed their wish to boost relations and cooperation with Vietnam as well as their opinion that the joint committee is an effective tool in applying diplomatic operation.”

“The two parties agreed to work out 24 joint programmes, focusing on the two countries’ strengths such as education and training, energy, agriculture-forestry-fisheries, transportation, mining, oil and gas and post and telecommunications,” Khiem said.

A number of business contracts were signed along with a consensus on security, where a principle of non-permission for third party aggression was agreed upon.

An agreement on criminal extradition is also expected to come to fruition soon,” Khiem said.

“The two sides agreed to speed up the planting of land border markers to finish the process by late 2008 in an effort to build a peaceful and stable borderline for our mutual development,” Khiem said.

“I stronlgy believe that bilateral relations will enjoy further development in the years to come,” concluded the Deputy PM.

Source: VNA

Monday, July 23, 2007

Mussomeli: "Cambodia is open to business, and we hope that many more American companies will follow in GE's footsteps"

General Electric opens Cambodian branch office with eye on oil and gas sector (Photo: AP)

General Electric opens Cambodian branch office with eye on oil and gas sector

Monday, July 23, 2007
The Associated Press

PHNOM PENH, Cambodia — U.S.-based conglomerate General Electric opened a branch office in Cambodia Monday, with its representative saying the company was taking a keen interest in the country's offshore oil and gas potential.

Cambodia's double-digit economic growth in recent years and good outlook for the future are the main reasons behind GE's decision to make its presence felt in the impoverished Southeast Asian country, Ferdinando Beccalli-Falco, president and executive officer of GE International, said at a ceremony.

GE International is a subsidiary of General Electric Co., which operates in more than 100 countries and employs more than 300,000 people worldwide. Its businesses include aircraft engines, power generation, oil and gas, financial and health care services, media and entertainment, and household appliances.

"This day is merely the first step in what is going to be a long marathon that GE is going to play in Cambodia," Beccalli-Falco said. Cambodia is on the verge of a major oil and gas discovery, he said, and GE is going help the country develop it and other sectors.

U.S. energy giant Chevron Corp. discovered oil in 2005 off the Cambodian coast, 90 miles southwest of Sihanoukville.

Although it is still unclear if the find will be commercially viable, the discovery has prompted hope of a boost to economic growth. It has also brought fear that, if not properly managed, the discovery could make widespread corruption in Cambodia worse.

Beccalli-Falco did not reveal GE's investment plans but said his company will look at several opportunities for business in Cambodia.

"Our internal findings show high potential in four key segments — health care, oil and gas, energy and water — all of which are strong suits for GE," he said.

Cambodia's economic growth has averaged around 11.4 percent for the last three years. The economy is expected to grow around 9 percent this year, lower than the 10.4 percent estimated for last year but still one of the highest rates in Asia, the International Monetary Fund said last month.

Deputy Prime Minister Sok An described GE's presence as "historic" and said its expertise "will greatly aid Cambodia's development effort, especially in the potential areas of energy, oil, gas, water, health care and finance."

"The fact that an American company as prestigious as General Electric is opening an office in Cambodia illustrates the promising investment opportunities that exist here," U.S. Ambassador Joseph Mussomeli said in a speech.

"Cambodia is open to business, and we hope that many more American companies will follow in GE's footsteps," Mussomeli said.

Tuesday, May 01, 2007

China, Vietnam spar over gas

May 1, 2007
By Andrew Symon
Asia Times (Hong Kong)


HANOI - Just when it seemed China and Vietnam had buried their conflicting claims to the Spratly Islands, Beijing is contesting a new Hanoi-tendered, BP-led, US$2 billion natural-gas project near the rocky group of islands and reefs in the South China Sea. The flare-up marks perhaps the strongest indication yet that Beijing's soft-power overtures toward Southeast Asia are hardening when it comes to energy-security concerns.

The contested Moc Tinh and Hai Thach gas fields, in the Nam Con Son Basin about 370 kilometers off Vietnam's southeast coast, are both run by British energy giant BP through a production-sharing contract with state-owned PetroVietnam and in partnership with US oil firm ConocoPhillips.

The Chinese Foreign Ministry on April 12 claimed that the project encroached on its territory, saying "any unilateral action taken by any other country in these waters constitutes infringement into China's sovereignty, territorial rights and jurisdiction. We are firmly opposed to this." Hanoi has countered that the multinational-led project lies in its territorial waters and exclusive economic area, consistent with the 1982 United Nations Convention on the Law of the Sea.

Beijing first lodged its complaint during a visit by members of the Vietnamese National Assembly, symbolically led by its chairman, Nguyen Phu Trong. The contested project lies adjacent to the Lan Tay gas field and pipeline, which commenced construction in the late 1990s and came on-stream in 2003. Until now it had not stirred any official complaint from China.

Led by BP and in partnership with PetroVietnam, Lan Tay is Vietnam's first large-scale gas-supply-chain project, piping fuel to the 3,800-megawatt combined-cycle power plant at the Phu My industrial estate outside Ho Chi Minh City that is popular with foreign investors. The pipeline also takes gas from the Korea National Oil Corp's Rong Doi field.

The contested BP-led Moc Tinh and Hai Thach project, which will include a new pipeline designed to deliver gas to a common processing facility onshore, is scheduled to supply gas to new power plants totaling 2,640MW at Nhon Tach, some 60km east of Ho Chi Minh City. Vietnam's offshore oil reserves are dwindling and Hanoi is increasingly looking to natural-gas projects to help fill the gap.

According to projections compiled last year by the Asia Pacific Energy Research Center, Vietnamese energy planners aim to have 230,000MW of power-generation capacity installed by 2010, of which 70,000MW will be fueled by natural gas. By 2020, Hanoi hopes nearly to double that capacity to 440,000MW, with natural gas providing 120,000MW of the total power, according to the same projections.

At the same time, China has launched a global investment spree to meet its surging energy appetite, including recent politically risky forays in Africa. Beijing has expressed its desire to source more of its fuel needs from Asia, because of its security concerns about shipping through the congested Malacca Strait between Indonesia's Sumatra island and peninsular Malaysia. And securing new fuel sources in the nearby Spratly Islands would help to alleviate those concerns.

Old enemies, new friends

Relations between neighboring Vietnam and China have long been tense, including recent armed skirmishes in the late 1970s and '80s. The two sides fought a brief but bloody border war in the wake of Vietnam's invasion of Cambodia, which ousted the Beijing-backed Khmer Rouge regime. In 1988, Vietnam and China fought a brief naval battle over the contested Spratly Islands in the south-central area of the South China Sea.

In line with China's regional economic charm offensive, more recently diplomatic relations have warmed and commercial ties have blossomed. The two sides have in recent years launched "friendship and cooperation" meetings, including regular reciprocal visits from each country's top government leaders. Improved diplomatic ties have paved the way for Vietnam to develop new transport infrastructure in its northern regions, aimed at better connecting its manufacturing base with China's booming southern provinces. Bilateral trade reached $10 billion in 2006, up more than 21% year on year.

Overlapping maritime claims still overshadow those improved relations, as the new dispute over Vietnam's Nam Con Son Basin natural-gas project shows. Notably, progress has been made on long-contested land boundaries. China this year ratified a treaty signed last October defining precisely the point where the national borders of China, Vietnam and Laos meet. But settling maritime boundaries, particularly concerning the Spratly Islands, has proved more difficult precisely because access to potentially abundant oil and gas resources is at stake.

During the 1990s, disputes over the Spratly Islands were commonplace, with different regional actors at times forcefully staking their claims. Recently China, Vietnam and others with overlapping claims there - including Malaysia, Brunei and the Philippines - agreed under the Association of Southeast Asian Nations' (ASEAN's) Declaration on the Conduct of Parties in the South China Sea to resolve any future disputes peacefully.

The Nam Con Son Basin area, the focus of the current disagreement, is a potentially important regional energy source. Most of Vietnam's present oil production is based closer to shore in the Cuu Long Basin, but in Hanoi's drive to secure new energy sources the more distant Nam Con Son Basin has become a focus of Vietnam-tendered, multinational-led exploration. Shell and ExxonMobil are operating in blocks that Vietnam claims but could also be subject to claims by Beijing.

Despite the high stakes, it does not appear that the latest bilateral squabble will escalate into full-blown saber-rattling - as past contested claims have, including China's seizure of the Paracel Islands from Vietnam in 1974. The Nam Con Son issue was discussed at a regular annual meeting between senior foreign-ministry officials from the 10 ASEAN member states and China in the Chinese city of Anhui between Monday and Wednesday last week. The matter was examined in the context of the Declaration on the Conduct of Parties in the South China Sea.

Beijing said shortly after making its claim to the territory on April 12 that the two sides had a consensus to resolve their disputed maritime boundaries around "the principle of shelving differences and seeking common exploration". The Chinese Foreign Ministry spokesman said in mid-April, "We should not take any unilateral action that will further complicate the situation."

A few days afterward, a delegation of Vietnamese government officials and army officers visited the Spratlys, sent ostensibly to celebrate the 32nd anniversary of the islands' liberation from the old US-backed government of South Vietnam, but which also entailed an inspection of troops in islands just to the north of the archipelago stationed clearly to defend against potential Chinese expansionism.

Andrew Symon is a Singapore-based journalist. He is completing a book on energy in Southeast Asia.

Friday, February 16, 2007

Future shock: Asia is running out of gas

Feb 17, 2007

By Alan Boyd
Asia Times Online (Hong Kong)


SYDNEY - When crude oil surged past US$70 a barrel in mid-2006, Southeast Asian governments were forced to confront an inconvenient truth that might almost have come from the hand of former US vice president Al Gore: income levels could not be sustained unless new energy sources were found, and quickly.

The World Bank has calculated that oil-import dependency trimmed as much as 1% off the region's gross domestic product last year, as higher production costs eroded export earnings, boosted freight overheads and inflated food prices.

Add in the threat posed by climate change, as well as the rising tide of diplomatic pressure for the Third World to meet emission targets under the Kyoto Protocol, and Southeast Asia's future shock of energy depletion has suddenly become all too real.

"Climate change clearly poses a major threat to the livelihoods and environments of the ASEAN region," Hans Verolme, director of the World Wild Fund for Nature's Global Climate Change Program, told the Association of Southeast Asian Nations summit in Cebu, Philippines, last month.

"The most efficient and economic way to reduce oil dependence will be through a stronger regionwide effort on energy efficiency."

But how to do it?

Of the 10 emerging and developing countries within the ASEAN bloc, only Indonesia and Malaysia are relatively self-sufficient in crude oil - and that comfort zone will evaporate within two decades, along with most natural-gas supplies.

From the global perspective, the US Department of Energy has calculated that oil demand will grow by 35% between 2004 and 2025 - from 82 million barrels per day to 111 million - largely because of the voracious appetite of newly industrializing countries such as China and India.

Output would need to rise by a similar amount. However, this assumes that the major producers, including Saudi Arabia and Nigeria, will double or even triple their production; few independent analysts now believe this will be possible. A greater likelihood is that crude-oil supplies to Asia will begin to dry up within two decades.

But while the world oil markets may be fickle and manipulative, the alternatives are not so obvious, even when coupled with efficiency drives. Coal is perceived in Asia as being too dirty, while local deposits are usually of poor quality; there is grassroots opposition to costly and invasive hydro-electric schemes, and solar generation lacks the economies of scale that could create a viable market.

This hasn't stopped a promising spurt of innovation that could lay a basis for renewable sources that can eventually supply a substantial portion of overall energy output, ranging from wave and wind generation to a bewildering array of biofuel applications.

According to the World Bank, which is spearheading an Asian alternative-energy program, spending on renewable-energy and efficiency projects in Asia as a whole has exceeded $1.5 billion in loans, credits and grants since the strategy began in 1992 - when there was a single project valued at $2 million.

By 1999, lending for alternative-energy schemes had already exceeded 46% of all spending in the power sector. Although this period coincided with a decreased volume of financing for conventional projects, it is believed that renewable projects still account for about half of all energy investment in Asia.

Nobody is sure what the investment returns will be for technologies that are largely untried in this region. But investors are coming because of a realization by policymakers that there will be no set formula for energy sufficiency: the answer will be a mix of applications that offers plenty of growth potential without breaking the bank.

"Over the past several years, as the dimensions of the energy and climate crisis have unfolded, the press, the public and politicians have embraced 'silver bullet' solutions one after another according to the fad of the day. One moment it's hydrogen, then ethanol, then nuclear power, then wind," said prominent US environmentalist Kelpie Wilson.

"Today there is a growing recognition that no single energy technology can replace fossil fuels, but there is still no recipe that tells us how to combine energy technologies into a healthful brew that can save our planet and our civilization."

A study coordinated by the American Solar Energy Association (ASEA) with input from a range of alternative-energy industries found that the US was capable of meeting its goal of 60-80% emissions reduction by the middle of the century if it embraced renewable forms - without compromising economic growth. Energy efficiency would account for 57% of the reductions and renewables the remaining 43%.

There have been no comparable studies for Southeast Asia, but the model of community-based power generation envisaged by the ASEA is already evolving in this region and fits neatly into rural lifestyles.

Most of the schemes being developed are so small that they wouldn't register on a conventional power graph. The World Bank's projects collectively will displace only about 1 gigawatt's worth of fossil fuel, a fraction of overall capacity, and supply an estimated 530,000-630,000 rural households. Most are consumers who have not previously had access to modern energy services.

The scale is limited by the classic energy conundrum of having to produce sufficient electricity in the places where it can do most good. In the case of wind power, which appears likely to be one of the success stories of the bank's strategy, it has been difficult to find sites that are both windy and close enough to population centers.

Studies by the bank in four target countries have found that an impressive 25% of rural populations would benefit from low-scale wind plants but only Vietnam offers a sustainable potential for larger output. While 8.6% of Vietnam has winds of good to excellent strength, the proportion falls to 0.2% in Cambodia and Thailand and 2.9% in Laos.

A $50 million plant opened by the Philippine government this month in Ilocos Norte province that will produce 25 megawatts of power is believed to be the first operational wind farm in Southeast Asia. It is is targeted at dispersed rural consumers.

The search for more visible solutions, especially ones that can embrace urban populations, has taken governments on two very different paths: nuclear reactors and biofuels. Realistically, only the latter is likely to be a part of immediate post-oil energy planning.

At least four countries have undertaken preliminary studies for nuclear plants, encouraged by European and US evaluations that a reactor can be operated for as little as 2 cents a kilowatt-hour, compared with 23 cents for solar and 10-12 cents for coal and gas.

These data do not include the higher development costs of nuclear plants, the price tag for processing or disposing of radioactive waste, or the need to ship in uranium, which would establish a whole new important dependency. Then there is the problem of finding enough trained technicians to staff the facilities.

Biofuels are a more natural fit, offering all the virtues, on the surface at least, of a model alternative energy form. They can be manufactured from just about any feedstock, are cheap to produce, and are reputed to emit almost zero emissions of potentially harmful gases.

Growth has been phenomenal in the past five years, with Malaysia, Thailand, the Philippines and Indonesia all establishing biofuel task forces. Biomass for co-generation plants is also on the list of alternative fuel options for Vietnam, though it appears unlikely to offer short-term potential.

The raw material comes from rice, oil palm, corn, coconuts, peanuts, sugarcane, soybeans and coffee, all plentiful in Southeast Asia. Once processed it can be mixed with diesel to replace motor fuels, used to power small generators in homes and factories, and bottled for export - fulfilling ASEAN's regional-cooperation pledge.

Yet biofuels also have their skeptics, not least within the environmental and scientific communities that were once so vocal in support. Still to be verified is whether the industry is as eco-friendly as claimed and offers a viable economic alternative to fossil fuels.

Studies in Australia and the US have concluded that ethanol, the biofuel blend used for motor vehicles, pollutes groundwater by releasing high levels of benzene. The US journal Science even reported that fuels containing ethanol produced just as many greenhouse emissions as gasoline. Greenhouse gases in the atmosphere trap the sun's heat, theoretically causing global warming that could change the world's climate catastrophically.

Ethanol has also been found to damage cars manufactured before 1986, while there can be wider ignition problems for fuels that contain 20% or more the substance, also known as ethyl alcohol or grain alcohol.

From an economic viewpoint, the impact of biofuels varies sharply depending on location and the available feedstock. While oil palm produces about 2,700 barrels of oil a year per square kilometer, the highest level of efficiency recorded for any feedstock, corn produces only 76 barrels and coffee 147.5.

So much feedstock is consumed in the production process that 540% of all arable farmland worldwide would have to be used to meet projected energy demand, or 54% of the Earth's entire land surface. Growing biofuel on all of the world's farmland would still only provide about 20% of the energy produced each year from crude oil.

There is new land, but most is found in forest reserves, pitting investors and politicians against local communities. Indonesia's spreading oil-palm plantations have created a regional problem of smoke emissions from clearing activities that will test severely ASEAN's much-touted Cebu Declaration.

Economic returns from biofuels are also skewed by generous government subsidies for output, including preferential tax treatment and direct grants, that have shielded ethanol in particular from market forces.

Politicians cite the public interest for maintaining protective barriers: when Thailand and Indonesia dismantled their subsidies for conventional fuels in 2005, growth rates plummeted in the fourth quarter as pump prices went up.

Biofuels, like other alternative forms of energy, will become competitive once the petroleum begins to run out. But the ethanol mix isn't the only blend economic planners will have to get right before that unnerving day dawns.

Alan Boyd is a Sydney-based correspondent.