Todai Sustainable Campus Project Website


Outline of the Project

1.Basic philosophy

The University of Tokyo has made it one of its missions to contribute to the realization of a sustainable society by creating a sustainable campus, while at the same time vitalizing research and education, by drawing on its wealth of existing intellectual resources. This groundbreaking project is called the Todai Sustainable Campus Project (TSCP).

There are many and diverse environmental issues that currently need to be addressed. However, considering the urgency and difficulty of the issue of global warming, as well as the necessity for universities to play a leading role in addressing it, we have decided to make it our first and foremost priority to create a low-carbon campus by reducing greenhouse gas emissions.

To achieve this, we will design appropriate measures to minimize our carbon output (sustainability design) based on an accurate understanding of the current status (sustainability monitoring) and also conduct a comprehensive range of activities and evaluations. Through these efforts, we will propose a model of a sustainable society as our future goal. To enhance the synergetic benefits of these efforts, we will also develop a “co-evolution” system to enable effective and efficient concurrent implementation of activities, and, as a leading academic institution, perform our activities as Japanese model cases aimed at the realization of a sustainable low-carbon society. Furthermore, based on these activities we intend to create a global sustainable campus movement by taking advantage of our network of domestic and overseas universities, with the eventual goal of further expanding the movement to every corner of society. By promoting the dissemination of low-carbon technology and effective measures across society, we will also seek to create economic ripple effects in the course of our efforts to create a low-carbon society.

Todai Sustainable Campus Project Image
Figure: Composition of the co-evolution system

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2.Current greenhouse gas emissions at the University of Tokyo

Energy-derived CO2 emissions on the five campuses of the University of Tokyo with buildings larger than a certain scale (Hongo, Komaba I, Komaba II, Shirokane, Kashiwa) are approx. 136,000 tons-CO2⁄year* in total. This figure represents 0.01% of Japan’s total CO2 emissions and is equivalent to about 13,000 people in terms of population. The major sources of these emissions are electricity (79%), city gas (19%) and oil (2%).
On a floor-area basis, annual CO2 emissions for the five campuses are 0.10 ton-CO2⁄m2 on average, which is almost the same as the average figure for office buildings in Tokyo. However, total emissions for the Hongo Campus, the total floor area of which is particularly large, are on the same level as those for the largest CO2 emitting office buildings in Tokyo. On the other hand, the University of Tokyo owns and maintains University Forests at several locations in the country, which are expected to absorb approx. 75,000 tons-CO2⁄year, more than 50% of the total emissions of the five campuses. While maintaining the capacity of these forests to absorb this amount of CO2, the University of Tokyo will also actively work on reducing the CO2 emissions of the five campuses.
Most of the university’s CO2 emissions come from electricity use. It is estimated from currently available data that laboratory equipment accounts for more than 30% of total power consumption, while air conditioners, lighting and miscellaneous general equipment account for 30%, 20%, and a little less than 20%, respectively. On a floor-area basis, power consumption is approx. 20 kWh⁄month⁄m2 (approx. 240 kWh⁄year⁄m2) for the science faculties, and approx. 6 kWh⁄month⁄m2 (approx. 72 kWh⁄year⁄m2) for the humanities faculties. *Total emissions calculated by multiplying the actual energy usage in FY 2006 with conversion coefficients (0.368kg⁄kWh for electricity, 2.31kg-CO2⁄m3 for city gas, 2.71t-CO2⁄kℓ for heavy oil)
*Total emissions calculated by multiplying the actual energy usage in FY 2006 with conversion coefficients (0.368kg⁄kWh for electricity, 2.31kg-CO2⁄m3 for city gas, 2.71t-CO2⁄kℓ for heavy oil)

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3.Possible measures for reducing greenhouse gas emissions

Based on our understanding, from currently available data, of the amount of energy consumed in the form of electricity, gas, heavy oil, including that which goes to the maintenance of the water supply and sewerage services, we at the University of Tokyo have developed concrete energy-saving measures for each category of equipment and system to reduce our CO2 emissions. We have furthermore estimated the effects of these measures, item by item, using various types of basic units. From these estimations, we have determined priority measures that are instrumental not only in minimizing the university’s output of CO2 but also in reducing the costs of maintaining equipment over its life cycle. These priority measures have included the renewal of large-scale heat source systems; installation of human body sensors to lighting fixtures; conversion to higher-efficiency fluorescent lamps (currently only partially completed); and upgrading of general refrigerators and room air conditioners. We will continue to elaborate these measures while examining other possible additional measures.

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4.Action plan


During the first five-year phase of the project—TSCP-2012—between FY 2008 and FY 2012, we aim to reduce CO2 emissions from non-experiment activities by 15% by FY 2012 from the FY 2006 level (13% in terms of total CO2 emissions at the university). To achieve this goal, we will implement the policies and measures specified in 1 to 4 below.

  1. Installation of power meters (visualization) to control the increase of emissions caused
    by the expansion of educational and research activities
  2. Support for switching to energy-saving equipment
    • Equipment whose investment recovery period is a half of or shorter than their replacement
    • Equipment whose ratio of annual CO2 reduction to the initial investment amount is large
    • Support for initial investment is considered for equipment whose investment recovery
      period exceeds four years.
    • Reduction of CO2 emissions by approx. 6% through enhancing energy-saving efficiency of
      large-scale heat source systems (total initial investment: approx. 500 million yen)
    • Reduction of CO2 emissions by approx. 7% through upgrading lighting, room air
      conditioners, refrigerators and other equipment
      (total initial investment: approx. 2.6 billion yen)
  3. Development of a model of introduction and dissemination of energy-saving equipment
    based on large-volume procurement
  4. Implementation of other measures that can also save utilities costs after initial investment
    is recovered

(2) TSCP-2017

To achieve the goal of TSCP-2030, which is to reduce CO2 emissions by 50% from the FY 2006 level, we have set the second phase interim target (TSCP-2017). We will define a new direction for 2030 as we carry on activities including trial implementation. The interim target of TSCP-2017 is a 5% reduction of university-wide CO2 emissions (excluding emissions from non-experimental facilities and advanced experimental facilities) by the end of FY2017 from the FY2012 CO2 emission level.

  • Specific measures to achieve the target are listed below.
    1. Conduct a survey on installations of experimental facilities and study reduction effects
      Carry out comprehensive energy-saving operation of basic experimental
      facilities (freezer, computational server, draft chamber, etc.) with the
      exception of advanced experimental facilities
    2. Continue promoting efficiencies at non-experimental facilities
      Renew air-conditioning and heat sources (central and multi-split system),
      and promote installation of LEDs
    3. Promote energy-creation and unused-energy sources
      Promote experiments on photovoltaics, and implement the thermal use
      of well water
    4. Strengthen management measures
      Continue promoting visualization, and appoint energy managers
      (academic members) responsible for each building
    5. Enforce high-efficiency specifications in newly constructed buildings
      Make TSCP guidelines compulsory, and enforce BEMS operation

    (3) TSCP-2030

    Following TSCP-2012, TSCP-2030, the second phase of the project slated to end in FY 2030, will begin. The goal of TSCP-2030 is to reduce CO2 emissions by 50% from the FY 2006 level, and we will formulate a specific plan for doing this by 2012. At present, we are planning to replace deteriorated equipment, including that which is not subject to replacement during TSCP-2012, with higher efficiency models, introduce technologies that are not feasible during TSCP-2012 due to high costs or other reasons, and commence full-scale energy creation (photovoltaic power generation, etc.).

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    5.Collaboration with society

    We will provide financial support to research and other practical activities to encourage faculty, staff and students belonging to the Energy Research Network, a university-wide organization to become actively involved in the project, while reflecting achievements of the research and activities in the university’s educational programs. In addition, we will also compete as well as collaborate with other domestic and overseas universities to play a leading role in the creation of a low-carbon society.

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