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  6. Reducing Greenhouse Gas Emissions Associated with Manufacturing

Reducing Greenhouse Gas Emissions Associated with Manufacturing

Preventing Global Warming from the Business Site

Greenhouse Gas Emission Reduction Targets

We have set "reducing our total greenhouse gas emission by 6% by the end of FY 2012 compared with FY 1990 (the breakdown for total emissions is a 5% reduction in CO2 due to energy consumption and a 20% reduction in gasses other than CO2)" as a goal of the Fujitsu Group Environmental Protection Program (Stage VI).

Our actual total emissions for FY 2010 globally were about 1.185 million tons, which is a reduction of about 128 thousand tons from the previous fiscal year and an 11.7% reduction from FY 1990.

Trends in Total Greenhouse Gas Emissions (whole group and global)

Reduction of CO2 Emissions due to Energy Consumption

CO2 emissions due to energy consumption are responsible for about 85% of the Fujitsu Group's greenhouse gas emissions.

Therefore, we continuously work to improve the following energy-saving measures to reduce CO2 emissions.

  • Energy-saving equipment, focusing on motive-power facilities (introduction of free cooling, inverters, energy-saving facilities, fuel conversion, etc.)
  • Increased efficiencies through revised manufacturing processes, accompanied by proper motive-power facility operation and improvement of management
  • Adjusting appropriate room temperature for office air conditioning, saving electricity for lighting and office automation equipment
  • Promotion of the measurement and visualization of energy consumption and proactive use of that data
  • Use of natural energy sources such as solar power

Further, we set up a new Low Carbon Committee (see page 66) at the corporate level in September 2008, establishing reduction targets for each business unit. Stronger measures to achieve these targets follow reforms to processes and equipment (in mounting, assembly and testing) and the development of new technologies. Moreover, our Capital Investment Guidelines define the economic and environmental criteria for investment as we identify and urgently implement priority measures.

As a result, our actual energy-consumption CO2 emissions for FY 2010 were about 1.014 million tons (958 thousand tons in Japan, 56 thousand tons outside Japan), which corresponds to a 27 thousand ton reduction from the previous fiscal year and a 6.4% reduction from FY 1990.

Casestudy

Reducing CO2 emissions with outside air cooling and the adoption of turbo cooling units for air conditioning

When we upgraded the aging water-cooled chillers at the Fujitsu Yatsuo Center, we reviewed the facility to determine an appropriate cooling capacity and upgraded to turbo cooling units with high energy efficiency. In contrast with the COP (energy consumption efficiency) value of 4.1 for the water-cooled chillers, the turbo cooling units have a COP value of 5.7*1 and achieve a reduction in CO2 emissions due to energy savings.

Furthermore, we adopted equipment that draws in the cool, comparatively damp, outside air that is characteristic of Toyama Prefecture for server room air conditioning. We expect to save an amount of power roughly equal to that consumed by one server air conditioner during periods when outside air is used. We expect to achieve an annual CO2 emissions reduction of 116 tons through these measures.

*1 The values shown here for the water cooled chillers and outside air cooling are based on actual operating performance and the values for the turbo cooling units are based on the manufacturer's catalogs.

Please refer the activities for PCs.

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