Environmental Conservation

At COP3 held in Kyoto in December 1997, targets were set by industrialized countries for the reduction ofgreenhouse gas emissions. The Japanese government has embraced Japan’s goal of a 6% average cut inemissions between 2008 and 2012, compared with 1990 levels. Natural gas—one of the cleanest burning of
all fossil fuels—is seen in many quarters as an important energy source for achieving this. As part of its
ongoing environmental stewardship and to show leadership in environmental management, Tokyo Gas
formulated a new environmental policy in June 2000. Our basic aim is continuous reduction of the environmental impact of energy use by our customers as well as by our own business activities.

ISO Certification
agement priority. In 1997, both the Negishi and Sodegaura

NOx

SOx

Obtaining ISO certification has been positioned as a high man-Natural Oil
Gas

Coal

Natural Oil
Gas

Coal

CO2
NaturalGas

Oil

Coal

LNG terminals obtained ISO 14001 certification; and in 2000,
the Ohgishima LNG Terminal obtained the same certification.

1670100

70100

Also in 2000, the Shinjuku District Heating and Cooling Cen-0ter became the first supplier of heat in Japan to attain ISO

Source: IEA, Natural gas prospects to 2010, 1986.

14001 certification.

The Unique Strengths of Natural Gas

Recycling Initiatives
Recycling and decreasing waste volumes are other ways wereduce the environmental impact of our activities. SRIMS (Saving

406080100

Natural gas is a clean energy resource. Compared with oil and coal,natural gas, when burned, produces less carbon dioxide (CO2) andnitrous oxide (NOx) emissions, both of which are major factors inglobal warming and acid rain. Furthermore, it produces no sulfur oxides(SOx) whatsoever.

Tokyo Gas Group Environmental Policy (Formulated in June 2000)
Philosophy
The Tokyo Gas Group will promote the harmonious
use of energy to contribute to the preservation ofregional and global environments as well as to thesustainable development of society.
Policies
Reduce the environmental impact of customers’ energy use
Tokyo Gas will actively and on an ongoing basis attempt
to reduce the environmental impact of customers’ energy use. We will do this by promoting the use of environmentally friendly natural gas and providing highly
efficient products and systems with minimal environmental impact.
Reduce the total environmental impact of Tokyo Gas’
business activities
Tokyo Gas will continuously reduce per unit energy andresource use in its business activities through the development of increasingly efficient and effective environ-TOKYO GAS Annual Report 2001

mental management activities to contribute to the realization of a sustainable society. At the same time, Tokyo
Gas will reduce overall environmental impact by aggressively promoting “green” purchasing and the reduction,
reuse and recycling of industrial waste.
Strengthen environmental partnerships with local areas
and the international community
Tokyo Gas will strengthen its environmental partnerships
with both the local areas in which it operates and theinternational community by engaging in a wide varietyof activities. These activities will range from participation in regional environmental activities to international
sharing of technological developments, starting withstrategies to prevent global warming.
Promote environment-related technology R&D
Tokyo Gas will proactively research and develop environmental technologies, including renewable energy, topreserve regional and global environments.

Overview of Tokyo Gas Environmental Accounting
Environmental Preservation Benefits
Investments and Expenses
for Environmental Preservation by Tokyo Gas
Tokyo Gas Operation

Customer Utilization● Pollution prevention● Global environmental● Environmental R&D● Recycling of used gaspreservation● Resource recycling● Environmental management● Other measuresappliances● Reduction in substances with environmental impact(emissions in relevant units)➔➔

Contributions to Society● Reduction of waste● (Reference) Reduction of substances with an environmental

impact at customers’ level

Actual Economic Benefits● Cost savings● Profits on sale of items of value derived from ordinary

business activities
Tokyo Gas has compiled parent-company environmental accounting results for the year ended March 31, 2001, as it did in the previous fiscalyear. The figures show that the parent company invested approximately ¥1.1 billion and incurred expenses of roughly ¥4.6 billion forenvironmental preservation. There are two central features of Tokyo Gas’ environmental accounting. One is the extremely low environmental
impact of gas production, supply and other activities due to the completion of a switch to natural gas. The other is an emphasis on research
into methods to reduce the environmental impact of gas utilization by customers, mainly through the development of highly efficient gas
appliances and systems such as micro cogeneration systems. More detailed information concerning Tokyo Gas’ environmental accounting iscontained in our Environmental Report 2001.

and Recycling Innovative Model System) is at the heart ofIn the fuel cell field, Tokyo Gas is developing an on-site generationthese efforts. This system facilitates the efficient collection,system that boasts high generation and energy efficiency andseparation, management and disposal of used gas equipment,emits almost no atmospheric pollutants. High hopes are heldpipes and other industrial waste. In a similar vein, we are radi-for the use of fuel cells in future residential cogeneration systems.

cally reducing the amount of earth removed from pipeline

Natural gas vehicles (NGVs) are also playing an integral

construction sites.

Countermeasures Against Soil Contamination at Sitesof Former Gas Manufacturing Plants
Since fiscal 1999, Tokyo Gas has, in accordance with guidelines stipulated by Japan’s Ministry of the Environment, beenrole in reducing environmental impact. The Japanese government has set a target of having 1 million NGVs on Japan’sroads by 2010. In addition, with an eye on the future, we arealso seeking new, environmentally friendly forms of energy,
such as methane hydrate.

continuously carrying out voluntary site inspections and surveys of company-owned land, namely sites of former gas

International Efforts to Improve the Environment

manufacturing plants, where there is a possibility of soil con-

In fiscal 2000, Tokyo Gas was commissioned by thetamination. Where it is clear that there is soil contamination,

Japan External Trade Organization (JETRO) to conduct
feasibility studies in two cities overseas. In Beijing,

Tokyo Gas has promptly made a full report to the relevant

China, Tokyo Gas studied the feasibility of establishingauthorities and undertaken whatever measures were necessary.

a high-efficiency, large-scale CHP system, as well as

Development and Application of Technologies toimporting LNG.
In Tehran, Iran,Reduce Environmental Impact

Tokyo Gas con-Tokyo Gas feels that it has the responsibility to further reduce

ducted a study

the environmental impact of natural gas. That’s why we areon converting

developing new ways to increase energy efficiency. Gas
cogeneration systems and gas-fired air conditioning are just acity buses to run
on CNG.

few of the many technologies that are being widely adopted.

Annual Report 2001 TOKYO GAS17