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Mitigation of Climate Change by Products and Services

In order to promote developments aimed at mitigating climate change, Toshiba Group assesses the entire life cycle of products. We will provide energy-saving products worldwide and reduce CO2 emissions in order to contribute to mitigation of climate change.

Reducing CO2 emissions through the Greening of Products initiative

With a view to mitigating climate change, Toshiba Group is striving to reduce CO2 emissions through the Greening of Products initiative aimed at developing products by setting eco-targets for mitigation of climate change to improve major environmental performance.

Toshiba Group's products cover a wide range of categories from consumer electronics to power generation plants, and CO2 emissions from these products in different stages of their life cycle vary from one product to another. Under the Fifth Environmental Action Plan, we will continue to evaluate products throughout their entire life cycle. At the same time, we will focus our efforts on reducing environmental impact during customers' use of products, which has a large effect on the environmental efforts of Toshiba Group as a whole, and further enhance the annual CO2 emissions reduction effect that may be achieved if conventional products are replaced by eco products.

Results of FY2015

Since FY2010, we have set eco-targets regarding the mitigation of climate change in order to develop products with the highest level of environmental performance. In FY2015, we were able to reduce CO2 emissions by 15.10 million tons per year by offering newly developed products throughout the world.

Future initiatives

Toshiba Group will continue to reduce the amount of CO2 emissions across all its products by identifying key factors that contribute to reducing CO2 emissions and by sharing advanced examples and core technologies among group companies. At the same time, we will expand our business in global markets for home and business appliances, such as LED light bulbs and industrial air conditioners that have large energy-saving effects, as well as for social infrastructure products—especially in markets in developing countries where there is a rapidly growing demand for products that can achieve great reductions in CO2 emissions.

Through these measures, we aim to achieve a reduction in CO2 emissions of 15.50 million tons by FY2016.

Changes in reductions in CO2 emissions
Changes in reductions in CO2 emissions

Breakdown of reductions in CO2 emissions (FY2015)
Breakdown of reductions in CO2 emissions

Percentages of CO2 emissions from the lifecycle stages of Toshiba Group's products
Percentages of CO2 emissions from the lifecycle stages of Toshiba Group's products

Breakdown of reductions in CO2 emissions by area (FY2015)
Breakdown of reductions in CO2 emissions by area

* The photos is for illustrative purposes only.

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Case Study 1: Energy-saving solutions for rolling stock

Toshiba Group is working to further improve the efficiency and energy-saving performance of various devices and systems used in rolling stock.

We are also striving to systematically reduce energy consumption from multiple perspectives, including reducing the number of man-hours and parts required for replacement as well as downsizing products using new system module structures.


Energy-saving features
  • Greatly reducing the energy consumption of all system devices
    Example: Reducing energy consumption by 39% with a Permanent Magnet Synchronous Motor (PMSM) system*1
  • Monitoring, analyzing, and automatizing train operations to support energy- efficient driving
    Example: Reducing energy consumption by 10% with automatic train operation*2
Making maintenance simple and extending service life
  • Contributing to developing easy-to-maintain rolling stock by simplifying conventional operations
Reducing size and weight
  • Reducing the size and weight of equipment by adopting new systems/parts and using modular structures
Based on field test results for Toshiba's PMSM and Induction Motor (IM)
Based on results of simulation and field tests (over 10%)

Case Study 2: Highly power-efficient SSDs for the enterprise

[Image] Highly power-efficient SSDs for the enterprise

Advancements in cloud services and the widespread use of big data in recent years have raised concerns over the exponential increase in the amount of information saved on large-scale storage systems, most typically those of datacenter systems. Toshiba Group provides high-performance, highly power efficient SSDs for the enterprise, thereby contributing to reducing the power consumption of storage systems and various servers in datacenters and at other sites.

Energy-saving features
  • Realizing high-speed data transfer by using the latest interface standard, NVMe*
  • Using Toshiba NAND in combination with an originally developed controller to reduce power consumption per MB/s in write operations by 49% compared to competitors' products
NVMe: Non-Volatile Memory Express, an interface optimized for non-volatile memory
NVMe™ is a trademark of NVM Express, Inc.

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Case Study: SMARTRECEIPT® electronic receipt system

Toshiba TEC Corporation

SMARTRECEIPT® is a service that provides benefits to customers and also helps mitigate climate change. When a customer pays at the register, SMARTRECEIPT® digitizes the transaction data and manages it on a cloud server instead of printing a receipt. The service provides customers with electronic receipts by reading barcodes that are displayed in a smartphone application or by reading membership cards at checkout counters. After payment, customers can access their receipts at any time from any location via their smartphones. In addition, the solution can also be used to provide services using electronic data, such as campaigns targeting customers who purchased certain products. SMARTRECEIPT® utilizes datacenters and smartphones. By eliminating paper usage through digitization, it mitigates climate change and reduces resource consumption, thereby curbing CO2 emissions by 13% according to our calculations for a model case.

Screen images


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Case Study: Expanding the application of heat pumps to high-temperature heat sources

Toshiba Carrier Corporation

Heat sources with temperatures close to 100°C are required for many processes, including food processing, chemical manufacturing and coating. Conventional systems use boiler steam as such a heat source. Although using a heat pump as a heat source can greatly reduce CO2 emissions, for general heat pump chillers it is difficult to realize high temperatures exceeding 55°C.

To overcome this drawback, Toshiba Carrier Corporation has developed a circulated heating heat pump that provides a high-temperature, large-capacity heat source by using a double refrigeration cycle with two different types of coolants. Using this heat pump system as a heat source in processes that previously have been carried out by boiler steam can reduce CO2 emissions by more than 50%.

Double refrigeration cycle
[Image] Double refrigeration cycle

This figure is simplified. The heat pump is equipped with parts not depicted in the figure, such as a four-way switching valve and container.

[Image] CAONS700/CAONS140/CAONS45

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Case Study: Saving energy with a tiered storage system

As cloud computing becomes more widely used, energy use also increases due to expansion of total data capacity. To cope with this dilemma, Toshiba Group has developed a tiered storage system that is constructed by combining high-performance Enterprise SSDs*1 and low-cost, large-capacity HDDs*2.

This tiered storage system provides access performance approximately 7.5 times higher than a conventional storage system comprised only of Enterprise HDDs. The system also reduces the number of drives by approximately 64% and power consumption by approximately 55%, thereby contributing to cost reduction and mitigation of climate change (percentages calculated by Toshiba).

Enterprise SSD : Enterprise Solid State Drive. A flash memory drive for corporate use
HDD : Hard Disk Drive

[Image] Storage system that supports cloud computing

[Image] Benefits of a tiered storage system (calculated for a 300-TB system)

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