Sat, Sep 04, 2004 page12

• Honda tests concept car in a World Heritage site

  ECO-HERESY? The Japanese automaker is test driving its prototype fuel-cell car around an unspoilt island in an experiment to achieve zero greenhouse gas emissions

  • AFP
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  At first sight, the use of an island famed as an ecological gem as a test-track by a major carmaker may seem like environmental heresy. But researchers on Yakushima are pursuing an ambitious dream of achieving zero greenhouse gas emissions.

  The goal is theoretically possible thanks to the remote southern Japanese island's inexhaustible water resources.

  

  This file picture released by Honda Motor in April shows the company's FCX fuel-cell vehicle running along a winding road in Japan's southwestern island of Yakushima.

  PHOTO: AFP

  As a major step toward the ecological grail, in April a joint industrial-academic team set up a hydrogen filling station to allow for the test driving of fuel-cell cars on the sub-tropical island.

  As part of the project, Honda Motor's prototype "FCX" car cruises along a winding coastline road surrounding the circular island, also famed for its millennia-old cedars and registered as a UNESCO nature World Heritage site.

  "The project is unique because we use hydroelectric power to produce hydrogen, which means all we need is water," said Takami Kai, an associate professor from Kagoshima University, which is heading the project.

  In hydrogen production, electricity is needed to separate hydrogen from water, but carbon dioxide is produced if a fossil fuel is burned as an electricity source.

  "Here, electricity is produced using only water. So, our hydrogen is 100 percent greenhouse gas free," Kai told reporters at the station on the northern edge of the rocky Pacific island 1,100km southwest of Tokyo.

  The facility looks just like an ordinary gas station -- with a filling pump, hose and nozzle -- except there is no smell of petrol.

  The driver of the FCX, which can run at 150km per hour, pulls in for more fuel, driving around a lawn in the shape of a large H for hydrogen.

  "There's nowhere else we can aim at an ultimate zero (greenhouse gas) emission but here," said Hirokazu Takanashi, another associate professor at the university. "We know it's ambitious, but zero emission is our final goal."

  On the island, which has a population of 14,000, hydroelectric power already accounts for all electricity generation, compared with the national average of 3.3 percent reliance, according to Japan's environment ministry.

  Rainfall here reaches 10,000mm a year, which in theory can produce 1,130 billion watts per hour, of which the islanders use only 32 percent.

  Analysts and experts, however, say the project is still a long way from achieving its goal.

  "Theoretically Yakushima is able to achieve zero carbon dioxide emission, but there are a lot of hurdles to clear," said Tadahiro Mitsuhashi, professor of environmental studies at Chiba University of Commerce.

  "A major hurdle is the islanders' awareness and understanding of the project," Mitsuhashi said. "To achieve success, people on the island have to accept some extra burden," including higher energy supply costs, he said.

  Local government official Koji Kihara concedes the islanders still have some way to go.

  "Although people's awareness of environmental conservation improved after Yakushima was registered as a World Heritage site, it's too early to seek their full support," said Kihara, who works for the island's environment policies bureau.

  Mariko Kawaguchi, chief analyst at Daiwa Institute of Research Ltd, also stressed a clear conception of the advantages the project will bring is indispensable if the private sector is to participate.

  "If private companies want to take part in an environmental project, they've got to be told what the benefit is from it. The Yakushima project is no exception," Kawaguchi said.

  While Japanese carmakers have spent millions of dollars on developing fuel-cell cars, the day when they will make economic sense for consumers and be profitable for the manufacturers is still far off.

  Analysts say high production costs and an insufficient number of hydrogen stations are major obstacles to wide use of the next-generation vehicle. Last year Toyota officials estimated the production cost of a fuel-cell car at more than ?100 million (US$913,000).

  "Fuel cell vehicles are expected to be what will supersede gasoline cars," said Sachito Fujimoto, a senior Honda researcher working on the development of the FCX. "We expect [fuel-cell vehicles] will become widespread between 2015 and 2020, but there is a problem with infrastructure. It is necessary for the industry and society in general to tackle the problem together."

  For Japan, a leader in the fight against global warming under the Kyoto Protocol on climate change, a reduction in greenhouse gas is an urgent priority as it spewed out a record amount of carbon dioxide in the year to March 2003.

  Japan's carbon dioxide emissions rose 2.8 percent to an all-time high of 1.25 billion tonnes for the year to March 2003, or 11.2 percent above the fiscal 1990 levels which provide the benchmark for the Kyoto Protocol on global warming.
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