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Reducing Total GHG Emissions

Toshiba Group proactively installed systems to collect and/or remove sulfur hexafluoride (SF6), which is used to insulate heavy electric machinery, and perfluorocarbons (PFCs), which are used to produce semiconductors. By steadily taking measures to improve our production processes, the Group is working to reduce the total amount of GHG* emissions of our business activities. In particular, to reduce energy-derived CO2 emissions resulting from the use of electricity, we are making efforts to proactively adopt energy-saving measures at our production sites, including those overseas, to improve production efficiency, as well as to introduce renewable energy.

In FY2019, total GHG emissions were 1.14 million t-CO2, so we achieved our target of 1.61 million t-CO2. Energy-derived CO2 emissions per unit activity were 93% compared to the FY2013 level. Although total GHG emissions have remained almost constant compared to the previous year, an improvement was made in per unit activity as a result of investment in high-efficiency equipment and other efforts. In FY2020, the Group aims to reduce total GHG emissions to 1.66 million t-CO2 and energy-derived CO2 emissions per unit activity to 92% compared to the FY2013 level.

Going forward, Toshiba Group will contribute to the realization of a decarbonized society by working to significantly reduce GHG emissions through the active promotion of measures such as expansion of the use of renewable energy at our sites worldwide based on our long-term GHG emissions reduction targets set in line with the direction indicated in the Paris Agreement.

Carbon dioxide (CO2), methane (CH4), dinitrogen oxide (N2O) (= nitrous oxide), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulfur hexafluoride (SF6), and nitrogen trifluoride (NF3)

Total GHG emissions

[Image] Total GHG emissions
For the CO2 emission coefficients for electricity, emission coefficients provided by each power company are used.

Breakdown of total GHG emissions (FY2019)

[Image] Breakdown of total GHG emissions

Energy-derived CO2 emissions and those per unit activity

[Image] Energy-derived CO2 emissions and those per unit activity
For the CO2 emission coefficients for electricity, emission coefficients provided by each power company are used.
For the per unit activity, values related to the energy consumption required for manufacturing (nominal production amounts, number of products manufactured, number of persons, total floor area, etc.) are used.

Breakdown of energy-derived CO2 emissions (FY2019)

[Image] Breakdown of energy-derived CO2 emissions

Case: Energy-saving management in a new technology building using the latest sensor technology

Toshiba Carrier Corporation


[Image] Exterior of the new technology building "e-Third"
Exterior of the new technology building "e-Third"

Construction of the new technology building "e-Third" at Fuji Works of Toshiba Carrier Corporation was completed in January 2020, and the building was put into operation in May. We position "e-Third," our evolution + Technology hub of R&D, as the core of our technology development, which stretches around the world; at "e-Third," we conduct research and development of products and solutions for global markets.
Since many engineers work at the multiple laboratories of "e-Third," many kinds of equipment and technologies have been installed to achieve a comfortable working environment and energy management. In addition to using high-efficiency devices, more than 600 sensors (image sensors, radiation temperature sensors, temperature sensors, CO2 sensors, etc.) have been installed on all floors (from the first to the fourth). Based on the information obtained from these sensors, human body sensor lighting is toggled ON and OFF, the air flow from the AHU* is controlled according to the CO2 concentration, ventilation ducts are controlled to suit the temperature, and natural ventilation windows are opened and closed.
In this way, the entire building achieves comfort and conserves energy in the optimal manner.

Air Handling Unit (air conditioner)

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Case in FY2018

Case : Certified as Top Level Facilities by the Tokyo Metropolitan Government

Toshiba Infrastructure Systems & Solutions Corporation
Fuchu Complex

Our Fuchu Complex was certified as a Top-Level Facility by the Tokyo Metropolitan Government for outstanding global warming countermeasure efforts. The certification reflects the recognition of its long history with the completion of the building in 1940, a large-scale facility in the manufacturing industry with solar power generation and high efficiency production facilities, control of peak power and power usage by using the power monitoring system, "Demand EYE," participated by all employees, and so on.

In addition to these efforts, Fuchu Complex has been working on other various global warming countermeasures toward the achievement of "Zero Emission Tokyo" promoted by the Tokyo Metropolitan Government, which includes: weeding by goats and sheep; promotion of demonstration experiments at a hydrogen utilization facility; and the zero emission building (ZEB) concept for buildings and offices under Fuchu Complex Next Plan*.

Looking forward, Fuchu Complex will continue to aim at reducing environmental impacts and improving production efficiency through highly environmentally conscious facility management as Toshiba Group's leading production site.

Fuchu Complex's medium-term strategy plan

[Image] Visualization of electric power (Demand EYE)

[Image] Unique weeding measures / Utilization and demonstration of renewable energy / Planned facility upgrade toward growth strategy / ZEB concept for buildings and offices under Fuchu Complex Next Plan / Participation in “Zero Emission Tokyo”

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Case in FY2017

Case : Introduction of a circular heating heat pump for compressor coating pretreatment

Toshiba Carrier Corporation

In our pretreatment process for coating of compressor line, we apply degreasing and chemical conversion coating* as a treatment for the coating surface. In these degreasing and chemical conversion coatings, the degreasing liquid and chemical treatment liquid must be used after heating. Previously, we utilized steam generated from a factory boiler by the heat source. By installing our "CAONS 140 circulated heating heat pump system" to convert the heat source and discontinue the use of steam, we succeeded in reducing CO2 emissions by 310 tons per year. By also introducing various energy-saving measures, we succeeded in achieving a reduction of CO2 emissions by 540 tons per year for the entire coating pretreatment.

Treatment to form a coating film on the surface of the material by chemical reaction

[Image] Reduction of CO2 emissions by coating pretreatment equipment[Image] CAONS 140

Case : Energy-saving for air conditioning equipment in semiconductor clean rooms

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