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Mitigation of Climate Change by Energy Technologies

Conventional Energy

In order to provide a stable energy supply and mitigate climate change, Toshiba Group is developing various technologies to reduce the amount of CO2 emitted during thermal power generation as well as making continued efforts to ensure the safety of nuclear power generation.

Combined cycle thermal power generation system with the world's highest level of efficiency (≥ 62%)

[Image] Overview: Combined cycle thermal power plant
Overview: Combined cycle thermal power plant

Combined cycle thermal power generation is a power generation method that combines gas turbine and steam turbine. By using exhaust gas energy, combined cycle thermal power generation system improves efficiency and reduces CO2 emissions per unit of electric energy compared with coal-fired conventional thermal power generation. Having developed a power generation system with the world's highest level of efficiency (≥ 62%) (lower heating value basis), Toshiba is now preparing to build a system for Nishi-Nagoya thermal power station that was ordered by the Chubu Electric Power Company. We will continue to further improve efficiency and contribute to reducing CO2 emissions.

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Carbon capture technology: Progress toward commercialization

[Image] Pilot plant
Pilot plant

Toshiba is making progress toward commercializing technology for capturing CO2 from exhaust gas emitted from thermal power plants. We have conducted verification tests at a pilot plant for a more than 7,300 hours. Based on the know-how acquired through these tests, we are proposing application of the system to potential customers. We are also participating in Plant Biomass Energy Utilization Project of Saga City's Incineration Plant, which aims to capture CO2 from exhaust gas of the incineration plants to be used for growing agricultural crops and algae.

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Development of a new thermal power generation system that emits no CO2 into the atmosphere

[Image] Development of a new thermal power generation system that emits no CO2 into the atmosphere

Toshiba is working to develop the world's first high-efficiency power generation system that operates turbines using CO2 generated by high-temperature, high-pressure oxygen burning of fuel. CO2 circulates within the system and is removed to be stored or used for EOR* in addition to being used for power generation. Therefore, CO2 generated from fossil fuel is not released into the atmosphere. We are currently working to commercialize this system.

*
EOR: Enhanced Oil Recovery
Method for injecting high-pressure CO2 to increase the yield of oil in old oil fields

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Striving to the utmost to stabilize the operation of the Fukushima Daiichi Nuclear Power Station and to facilitate decommissioning of the reactors

Working in cooperation with the government and Tokyo Electric Power Company, Toshiba Group is striving to the utmost to stabilize the operation of the Fukushima Daiichi Nuclear Power Station, which was seriously damaged by the March 11, 2011 earthquake, as well as to facilitate the decommissioning of the nuclear reactors. In addition to SARRY™, a treatment system for retained water that continues to operate stably, we have developed and installed a multi-radioactive nuclides removal system (MRRS™) in order to purify the retained water. As part of efforts to decommission the nuclear reactors, we have developed a remote-controlled quadruped robot to survey the inside of the reactor buildings. At the same time, with a view to advancing decontamination, we started using Gammasight™, a gamma camera that visualizes the amount of radiation, as well as proposed the use of a cesium removal system for treating incineration ash.

[Image] Installation of a multi-radioactive nuclides removal system
Installation of a multi-radioactive nuclides removal system
(from Tokyo Electric Power Company's homepage)

[Image] Quadruped robot
Quadruped robot

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Initiatives for improving the safety of nuclear power generation

The global primary energy demand is predicted to increase to about 1.4 times the current level by 2035.*1 At present, we depend on fossil fuels for about 80% of our energy supplies. Even in the aftermath of the earthquake, there will continue to be demand for nuclear power generation worldwide as a means of ensuring that power supply meets growing needs for electricity without emitting CO2. In China, Westinghouse Electric Company concluded a contract for building four advanced pressurized water reactors (AP1000™), and is currently building these reactors. In the United States, Westinghouse Electric Company also received a contract for building six AP1000™ reactors, four of which are currently being constructed.

Along with promoting nuclear power generation, countries around the world are also reviewing their safety standards based on the lessons learned from the accident at the Fukushima Daiichi Nuclear Power Station, including making safety assessments and taking measures for severe accidents caused by external factors. Toshiba is cooperating in establishing international safety standards as well as reviewing facility standards. We will reflect these standards in our new plant designs as well as renovations of existing plants and make constant efforts to further improve safety.

*1
Source: World Energy Outlook 2012

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Renewable Energy

Toshiba Group is working to develop various power generation technologies that use renewable energy, including photovoltaic, hydroelectric, geothermal and wind power, and to promote the use of such technologies.

Growing into a company that plays a leading role in the use of renewable energy

In order to mitigate climate change and effectively use limited fossil fuel resources, Toshiba Group is working to develop various power generation technologies that use renewable energy, including photovoltaic, hydroelectric, geothermal and wind power, and to promote the use of such technologies.

Photovoltaic power generation

[Image] 250-W solar battery module
250-W solar battery module

Toshiba Group contributes to reducing CO2 emissions by providing photovoltaic power generation systems that achieve high levels of efficiency and long-term stability to a wide range of facilities, including power plants, factories and homes.

By using its comprehensive engineering skills acquired through the development of large-scale plants, Toshiba Group offers total support for power companies' development of photovoltaic power generation systems, from system design and coordination through to the start of operation, in order to provide mega solar systems that achieve the highest levels of efficiency and long-term stability. We also make use of our extensive achievements and experience acquired by developing mega solar systems for power companies to develop systems for factories and take an active part in industrial mega solar programs, such as the Tahara Solar-Wind Joint Project, in order to contribute to reducing CO2 emissions.

In the area of residential photovoltaic power generation systems, we began selling a 250-W solar battery module with the world's highest conversion efficiency, 20.1%, in December 2012. The conversion efficiency of this module has already exceeded the 2020 goal (20%) for service modules set by NEDO in the photovoltaic power generation roadmap. Thanks to its high efficiency, Toshiba's system that uses this globally leading module generates a large amount of power per area, thereby further contributing to reducing CO2 emissions.

Geothermal power generation

[Image] Compact geothermal power generation system
Compact geothermal power generation system

Toshiba delivers facilities equivalent to 23% of the world's total geothermal power generation capacity. Based on the temperature properties of geothermal sources, we provide optimal geothermal power generation systems, including flush systems, binary systems and flush-binary systems that use the two systems in combination. We also promote the use of Geoportable™, a newly developed 2-MW compact geothermal power generation system. Geoportable™ has a small footprint and contributes to effective use of geothermal energy in locations with only one or two geothermal wells.

Hydroelectric system

[Image] ΣFlow™, a system designed to generate power simply by installing it in a waterway
ΣFlow™, a system designed to generate power simply by installing it in a waterway

Toshiba has delivered about 2,000 units of both turbines and generators, totally over 56 GW of hydroelectric power generation facilities, to more than 40 countries around the world. We have the world's best-in-class technologies and achievements for pumped storage systems, in which water is pumped up using surplus power during nighttime and power is generated during daytime to offset power-demand peaks, as well as for adjustable speed pumped storage systems that is effective in power system stabilization. We also take an active part in developing small hydroelectric systems technologies to make effective use of hydroelectric energy. In addition to the Hydro-eKIDS™ series lineup for micro-hydroelectric systems, we have also developed ΣFlow™, a 1-kW hydroelectric system.

Wind power generation

In addition to providing total solution services from wind turbine development planning, construction and testing through to facility maintenance, Toshiba also actively promotes wind power generation by proposing solutions for managing wind farms comprised of multiple wind turbine and for stabilizing the amount of power generated by combining wind power with storage batteries.

Delivery of power generation systems (hydroelectric, geothermal and mega solar systems)
[Image] Delivery of power generation systems (hydroelectric, geothermal and mega solar systems)

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Power Distribution

Toshiba Group is working to develop various technologies for smart grids, which are next-generation power distribution networks designed to optimize the balance between energy supply and demand, including those for use of renewable energy.

Next-generation energy supply-demand control system developed by Toshiba, which plays a leading role in verification tests

Smart grid (next-generation power distribution network) technologies are attracting attention as technologies for using renewable energy which are likely to be used more widely in the future. The amount of power generated by power generation methods relying on renewable energy sources such as sunlight and wind varies with the weather. Therefore, when renewable energy is introduced in large amounts, the frequency and voltage of power distribution systems will be affected and such fluctuations must be adequately controlled. Toshiba is working to commercialize community-wide energy control systems by combining output control functions that use storage batteries with functions for forecasting energy supply and demand. For example, at a major shopping center in Indiana, the United States, we started an operation designed to stabilize power distribution system by storing electricity generated by photovoltaic power generation in stationary storage batteries and by placing priority on discharge from storage batteries when recharging electric vehicles. Through the introduction of smart grid systems, we will ensure adequate control of photovoltaic power generation systems and storage battery systems in order to realize stable power system operation.

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Contributing to the world with a wide range of solutions

Based on the power distribution technologies that it has developed in the past, Toshiba Group provides various smart grid-related solutions.

μEMS*: Grid monitoring/control device

[Image] μEMS: Grid monitoring/control device

The Micro Energy Management System (μEMS) is one of the core technologies that serves as the brain of a smart grid by monitoring and controlling the local supply and demand of electricity. It improves overall energy efficiency by controlling electricity supply and demand, including absorbing variations in power consumption within a grid and minimizing the effects of these variations on the electricity network. It becomes particularly important to accurately forecast and control electricity supply and demand with the introduction of photovoltaic power generation and new large-scale transportation systems that feature electric vehicles which may change the demand side considerably. In addition to the verification test project conducted by the New Energy and Industrial Technology Development Organization (NEDO) in cooperation with the state government of New Mexico, the United States, Toshiba has also received contracts for other verification test projects and commercial projects in order to carry out optimum energy control initiatives in countries around the world.

*
μEMS (Micro Energy Management System)

Smart meter

A smart meter is a high-performance system that collects data on power consumption and transmits the data to power utilities. It is able to collect detailed data on power consumption in buildings and houses and transmits such data to power utilities via the network. Users can also obtain information on their power consumption charges in real time. Smart meters are capable of two-way communication. When receiving an order from the grid monitoring system to reduce power demand (demand response program), the smart meter manages the power consumption of the connected appliances for which consumption is to be reduced. Toshiba has concluded an agreement with Tokyo Electric Power Company for an order of a communication system for smart meters and is using Landis+Gyr AG's international standard communication technologies, which have a proven track record. Toshiba has also acquired the U.S.-based Consert Inc., a company with demand response-related technologies, with a view to accelerating the speed of construction and overseas development of infrastructure for smart grid systems, including DR solutions.

Smart battery, a stationary storage battery system

[Image] Large-scale stationary storage battery system
Large-scale stationary storage battery system

Smart batteries are part of the stationary storage battery system proposed by Toshiba. By using Toshiba's SCiB™ rechargeable lithium ion battery, Toshiba provides a scalable battery system that covers a wide range of areas, from residences and factories through to power systems. We provide solutions for controlling groups of smart batteries in coordination with power systems, thereby contributing to the realization of a low-carbon society and climate change mitigation.

 

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Contributing to environmental protection with a wide range of products

In the area of power distribution systems and power receiving and transforming facilities for users, Toshiba also contributes to climate change mitigation through environmentally conscious products.

Top-runner transformer

Toshiba's products have various features, including not only those for reducing energy consumption to mitigate climate change but also high reliability and compactness as well as safety, disaster resistance and quiet operation. Used by many users, Toshiba's products are contributing to reducing energy consumption.

Canola oil-immersed transformer

This transformer uses canola oil as an insulating oil and reduces CO2 emissions by the carbon neutral effect.

Solid insulated switchgear

A special high-pressure switchgear that does not use SF6 gas, which is one of the greenhouse gases; this product is also designed to be compact and to ensure safety by insulating the major circuit with epoxy resin.

 

[Image] Top-runner transformer
Top-runner transformer

[Image] Canola oil-immersed transformer
Canola oil-immersed transformer

[Image] Solid insulated switchgear
Solid insulated switchgear

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