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Contributions by products and services associated with power supply

Contributions by products and services associated with power supply

[Image] Contributions by products and services associated with power supply

Generating power
—Contributing to climate change mitigation with power generation technologies—

Electric power supply is an important lifeline that supports economic activities and our lives in contemporary society. Toshiba Group promotes various initiatives to ensure a stable supply of power as well as to mitigate climate change.

Main power source

Currently, approximately 80% of the world's power is produced by thermal power generation with fossil fuels. Toshiba Group aims to achieve its goal of zero-emissions by employing a variety of thermal power technologies, including Advanced Ultra Super Critical (A-USC) coal-fired power generation, which has realized the world's highest level of power generation efficiency; high-efficiency gas combined-cycle power generation; technologies for separating and collecting CO2(CCS*) from emissions caused by thermal power generation; and super critical CO2 cycle power generation, which facilitates generating power and collecting CO2.

We are also striving to restart nuclear power plants in Japan. To this end, we are implementing measures to enhance nuclear reactor cooling systems and control the release of radioactive materials with the aim of preventing serious accidents and mitigating the effects of radiation. In addition, to further improve the safety of nuclear power plants, we will continue ongoing efforts to develop a reactor core material that can reduce the amount of hydrogen in the event of a major accident as well as to protect against cyber attacks.

With regard to hydroelectric power generation, Toshiba Group has developed a technology that improves turbine efficiency by applying Computational Fluid Dynamics (CFD) and also successfully increased output by renovating aged turbine facilities. Furthermore, we are also working to promote the introduction of renewable energy devices using adjustable speed pumped storage power generation systems that are effective for power system stabilization.

As for geothermal power generation, we have a technology that offers high-corrosion-resistance and erosion-resistance called "super rotor." By applying this technology to steam turbines, we ensure plant longevity, high operational reliability, and high operating rates.

Renewable energy

In the area of industrial photovoltaic power generation systems, Toshiba Group has delivered large-scale photovoltaic power plants with capacities of more than 10 MW to many locations in Japan. In addition, in 2016, we began selling a 345-W photovoltaic module with a conversion efficiency of 21.2% for residential photovoltaic power generation systems, thereby helping reduce CO2 emissions.

*
CCS: Carbon Dioxide Capture and Storage

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Storing power
—Contributing to climate change mitigation with power storage technologies—

The amount of power generated by renewable energy varies with the weather, so generating power with renewable energy is an unstable power generation method. Expanding the use of this method requires controlling sharp output fluctuations and achieving load leveling through peak shifts by charging batteries at night when demand is low and discharging electricity during the day when demand peaks. To handle such requirements, Toshiba Group provides products such as adjustable speed pump storage power generation systems and a stationary storage battery system that uses Toshiba's high-performance lithium battery, SCiB™ as modules.

Furthermore, in 2015, we commercialized H2One™, a hydrogen-based autonomous energy supply system, by combining a hydrogen power storage technology employing water electrolysis with fuel cell power generation technology.

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Distributing power
—Contributing to climate change mitigation with power transmission and transformation technologies—

In order to provide an economical and stable power supply, we deliver various systems, including high-voltage, large-capacity power transmission/transformation devices, medium- and low-voltage power distribution devices, system protection relay devices that incorporate digital technologies, and monitoring and control equipment systems that remotely control these devices. Toshiba Group has also developed a DC power transmission technology that can reduce transmission losses compared to AC power transmission. Using this technology, we are participating in every DC power transmission system project that promotes linkage between systems in Japan that differ in frequency. Overseas, we are also participating in a project for DC transmission between Italy and Montenegro as well as manufacturing major devices, including suspension valves and converter transformers, for the project. Furthermore, thanks to our proprietary circuit composition technology, Toshiba Group can miniaturize devices. Using this technology, we can reduce installation footprints.

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