Efforts for Realizing a Low Carbon Society
Green Technology System Division
Taikisha is helping to reduce GHG emissions at the operation phase of the air-conditioning and sanitary facilities it provides to clients.
Energy-saving Proposal Activities
The Green Technology System Business, as part of promoting eco-friendly designs, makes proposals for improving the energy efficiency (reducing environmental impacts) of facilities owned by clients. In energy-saving proposal activities, the Division repeats the cycle of energy-saving diagnosis to grasp the current status, make detailed proposals based on clients’ future visions, design and construction, and verify the effects in the operation phase.
To contribute to the target reduction in energy-originated CO2 emissions by FY2030 (25.0% reduction compared with FY2013) under the Plan for Global Warming Countermeasures, a Cabinet decision made in May 2016, Taikisha has developed a proprietary simulation-based Energy Plant Optimal Control System, which maximizes the amount of energy saved by heat source systems through optimal operation control according to external conditions that change from hour to hour and thus helps reduce CO2 emissions and running costs.
Development of Energy-saving Technologies
Taikisha is also working on the development of energy-saving technologies of clean room systems that control the circulating air volume by tracking the operation status of production equipment, staffing and indoor environment as well as room pressure control systems, by incorporating the technological progress of AI and IoT in air-conditioning systems to adapt to smart plants and buildings.
Taikisha defines the rate of CO2 emissions reduced from facilities owned by clients due to Taikisha’s proposals as the rate of CO2 reductions. The transition in the rate of CO2 reductions for the past 10years is shown in Figure 1. In FY2020, Taikisha conducted activities by setting a target for the rate of CO2 reductions of a weighted average of 25% or higher in in-house design projects, and Taikisha exceeded the target at 29.9%. (The rate of CO2 reductions achieved through proposals for each fiscal year is based on the most recent result of each proposal.)
The number of proposals and the proposed amount of CO2 emission reductions are classified by commercial client (for offices and hospitals, etc.) and industrial client (plants, etc.) and their transitions are shown in Figure 2. The amount of proposed CO2 emission reductions that corresponds to Category 11 under Scope 3 was about 948,000 t-CO2(the effect of 15 years of operation).
Formulation of New Medium-Term Plan for 2020 and Beyond
In light of the social goal of substantially reducing CO2 emissions by 2030, Taikisha has set a new medium-term plan target for 2020 and beyond to reduce its CO2 emission factor in designing and construction by 25% by 2030 (as compared with the 2013 emissions level, estimated based on net sales of completed construction contracts).
In order to achieve the medium-term plan, Taikisha will utilize energy-saving technologies in its current portfolio as well as new energy-saving technologies currently being developed such as production device tracking control.
Paint Finishing System Division
Taikisha is helping to reduce GHG emissions in the paint finishing process for automobiles, etc.
Activities to Reduce CO2 Emissions from the Paint Finishing Process
"In order to help reduce the environmental impact of the paint finishing process, in which energy usage is particularly high in the automobile manufacturing process, the Paint Finishing System Business has proposed plans to reduce CO2 emissions from paint facilities in the automobile manufacturing process.
Since 2000, Taikisha has been examining proposals in each fiscal year to meet the medium-term target of 70 kg-CO2/unit in 2020 by calculating the reduction in CO2 emissions using the energy estimation model for automobile paint finishing lines.
CO2 emissions, which were 160.1 kg-CO2/unit in 2005, decreased to 100 kg-CO2/unit, which is the first medium-term target, by 2012. By 2015, Taikisha reduced CO2 emissions further to 80 kg-CO2/unit, which is the second medium-term target, by promoting facility technologies such as dry circular (dry booths that use pre-coating materials).
In 2020, the Company introduced new technologies including dry booth using cardboard filter and compact air-conditioner using energysaving mist moisturizing system, and achieved the third medium-term target set in 2015 at 70 kg-CO2/unit.
Achievement of Third Medium-Term Target in 2020 and Formulation of New Medium-Term Plan Going Forward
As of 2021, in the light of the situation of greenhouse gas emission in countries across the world, governments as well as automobile manufacturers, who form our clientele, are increasingly setting targets
and deliberate measures to achieve carbon neutrality. Under these circumstances, the Paint Finishing System Division will set a new medium- to long-term CO2 reduction target in automobile painting process in
FY2021, in view of long-term low-carbon targets of automobile manufacturers.
Specifically, Taikisha is considering the following initiatives to contribute to the realization of carbon neutrality and conservation of the global environment in collaboration with automobile manufacturers and other related companies.