Tokyu Railways' trains running through Shibuya and other
stations were switched to power generated only by solar and other renewable
sources starting April 1.
That means the carbon dioxide emissions of Tokyu's sprawling
network of seven train lines and one tram service now stand at zero, with green
energy being used at all its stations, including for vending machines for
drinks, security camera screens and lighting.
Tokyu, which employs 3,855 people and connects Tokyo with
nearby Yokohama, is the first railroad operator in Japan to have achieved that
goal. It says the carbon dioxide reduction is equivalent to the annual average
emissions of 56,000 Japanese households.
Nicholas Little, director of railway education at Michigan
State University's Center for Railway Research and Education, commends Tokyu
for promoting renewable energy but stressed the importance of boosting the
bottom-line amount of that renewable energy.
"I would stress the bigger impacts come from increasing
electricity generation from renewable sources,” he said. “The long-term battle
is to increase production of renewable electricity and provide the transmission
infrastructure to get it to the places of consumption.”
The technology used by Tokyu's trains is among the most
ecologically friendly options for railways. The other two options are batteries
and hydrogen power.
And so is it just a publicity stunt, or is Tokyu moving in
the right direction?
Ryo Takagi, a professor at Kogakuin University and
specialist in electric railway systems, believes the answer isn't simple
because how train technology evolves is complex and depends on many uncertain
societal factors.
In a nutshell, Tokyu's efforts are definitely not hurting
and are probably better than doing nothing. They show the company is taking up
the challenge of promoting clean energy, he said.
“But I am not going out of my way to praise it as great,”
Takagi said.
Bigger gains would come from switching from diesel trains in
rural areas to hydrogen powered lines and from switching gas-guzzling cars to
electric, he said.
Tokyu paid an undisclosed amount to Tokyo Electric Power
Co., the utility behind the 2011 Fukushima nuclear disaster, for certification
vouching for its use of renewables, even as Japan continues to use coal and
other fossil fuels.
“We don't see this as reaching our goal but just a start,”
said Assistant Manager Yoshimasa Kitano at Tokyu's headquarters, a few minutes'
walk from the Scramble Crossing.
Such steps are crucial for Japan, the world's sixth-biggest
carbon emitter, to attain its goal of becoming carbon-neutral by 2050.
Only about 20 percent of Japan's electricity comes from
renewable sources, according to the Institute for Sustainable Energy Policies,
a Tokyo-based independent non-profit research organization.
That lags way behind New Zealand, for instance, where 84
percent of power used comes from renewable energy sources. New Zealand hopes to
make that 100 percent by 2035.
The renewable sources driving Tokyu trains include
hydropower, geothermal-power, wind power and solar power, according to Tokyo
Electric Power Co., the utility that provides the electricity and tracks its
energy sourcing.
Tokyu has more than 100 kilometres (64 miles) of railway
tracks serving 2.2 million people a day, including commuting “salarymen” and
“salarywomen” and schoolchildren in uniforms.
Since the nuclear disaster in Fukushima, when a tsunami set
off by a massive earthquake sent three reactors into meltdowns, Japan has shut
down most of its nuclear plants and ramped up use of coal-fired power plants.
The country aims to have 36 percent-38 percent of its energy
come from renewable sources by 2030, while slashing overall energy use.
Tokyu Railways has sought to publicize its effort with
posters and YouTube clips.
Still, Ryuichi Yagi, who heads his own company that used to
make neckties but has switched to wallets appeared surprised to learn he was
riding on a “green train."
“I had no idea,” he said.
Yagi switched his business because of Japan's “cool
biz" movement. It encourages male office workers to doff their suits for
open-necked short-sleeve shirts to conserve energy by keeping air conditioning
to a minimum in hot summer months.
In a sense, he said, “I lead a very green life.”
0 comments:
Post a Comment