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Beijing plans to increase the number of taxis that run on natural gas from the current 99 to 2,000 by the end of July in a trial project to promote the use of clean energy in public transportation.

Beijing now has 2,000 vehicles powered by natural gas, and that number is expected to be 10,000 by 2013, which will include 2,000 taxis, 3,143 city buses, and vehicles for some driving schools, the Beijing Environmental Protection Bureau said.

"Replacing traditional gasoline with natural gas in vehicles will greatly reduce pollution from fine particulate matter," said Xu Tong, deputy general manager of Beijing Gas Group.

"The increase of natural gas consumption will greatly improve the city's air quality."

A vehicle using natural gas can go as far as 500 km and is capable of meeting the demand of urban commuters, he said.

The city will add more than 30,000 additional natural gas vehicles by the end of 2017 if the trial project is successful, the bureau said.

A total of 7,000 natural gas powered public buses will be put into service by the end of 2015, the bureau said.

Vehicles that use natural gas instead of gasoline can greatly reduce major pollutants in the air. Pollutants with particulate matter with a diameter smaller than 2.5 micrometers can be cut by 93 percent; nitrogen monoxide by 20 to 40 percent; carbon dioxide by 25 percent; and carbon monoxide by 50 to 70 percent.

Natural gas will cost 30 to 40 percent less than diesel fuel, Xu said.

However, the promotion of clean-energy vehicles is not free from problems, with the lack of natural gas stations being the biggest concern.

Unlike electric vehicles, which enjoy many preferential policies, including exemption from the license plate lottery and a price discount, natural gas vehicles are not yet widely accepted, and construction of supporting facilities, like refueling stations, is lagging.

The capital has set up seven compressed natural gas stations and nine liquefied natural gas stations to support the additional natural gas taxis.

Some 100 stations will be set up by the end of the year, and at least 70 more will be built every year from 2014 to 2017 to meet the increasing demand.

Xu said that as the vehicles powered by natural gas become more popular in Beijing, more vehicle manufacturers will get sales permits and come up with more vehicles that use natural gas to meet consumer demand.

The Beijing Gas Group, the operator of the natural gas pipe network in the city, said Beijing - the biggest natural-gas consumer nationwide - had a 15,000-km pipe network by the end of 2012, covering all downtown and 95 percent of suburb areas with a total of 6 million users.

Natural gas accounted for 14 percent of the capital's energy consumption in 2012, an increase from 6 percent in 2010.

The city bought 54 billion cubic meters of natural gas from 1997 to 2012, replacing 84 million tons of coal.

Gas consumption in Beijing will reach 18 billion cubic meters in 2015, 21.6 billion cubic meters in 2017and 30.6 billion cubic meters in 2020, according to the city's energy plan.

In addition to implementing the gas-fueled vehicle pilot project, the city also vows to eliminate all coal-fired boilers within the Fourth Ring Road by 2013.

Questions:

1. How many taxis does Beijing have that run on natural gas?

2. By the end of 2015, how many public buses will run on natural gas?

3. Who is the deputy general manager of Beijing Gas Group?

Answers:

1. 99.

2. 7,000.

3. Xu Tong.

（中國日報網英語點津 Helen 編輯）

About the broadcaster:

Lance Crayon is a videographer and editor with China Daily. Since living in Beijing he has worked for China Radio International (CRI) and Global Times. Before moving to China he worked in the film industry in Los Angeles as a talent agent and producer. He has a B.A. in English from the University of Texas at Arlington.