Clean Factories - Factory Energy Conservation

We have introduced co-generation systems, effective in conserving energy and reducing CO₂ emissions, primarily for clean rooms within semiconductor and electronic component factories where exhaust heat can be effectively reused.
   To calculate CO₂ emissions, CO₂ emissions factor for electricity^*1 (electricity factor) is generally used. In principle we use the latest value of this factor, announced by the Federation of Electric Power Companies of Japan. Since this value fluctuates annually, we sometimes use the fixed value, which is effective in objective valuation of our efforts to reduce CO₂ emissions. To promote CGS, which is effective in reducing CO₂ emissions, we also use CGS corrections^*2. Based on the CO₂ emissions factor for electricity, we use both the fixed value, which is effective in objectively evaluating our efforts to reduce CO₂ emissions, and CGS corrections for promoting CGS.

• *1 Average CO₂ emission factor for all types of power, including nuclear, thermal, hydro, and renewable.
• *2 CO₂ emission factor (for CGS power) = CO₂ emission factor of thermal power - average CO₂ emission factor for all types of power (on the assumption that in-house CGS power replaces thermal power).

[Related Data File]

• Reducing global CO₂ emissions through our Three-Year Plan
• Promoting energy conservation initiatives in the device segment and in China
• Promoting factory energy conservation as CDM projects
• Visualizing energy losses
• CO₂ emissions per basic unit
• Energy consumption
• Composition of GHG emissions (tons- CO₂)
• Effects on power generation by co-generation systems (CGS)
• (Japan)Achieving a 15% reduction by careful management of factory facilities
• (China)Achieving a 5% reduction in the use of steam by using waste heat
• (Malaysia)Expansion of CDM initiatives in Southeast Asia and China