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

Main power source

Currently, approximately 60% of the world's power is produced by thermal power generation from fossil fuels. Toshiba Group aims to achieve its goal of ensuring both environmental consciousness and a stable power supply by using a variety of thermal power technologies, including high efficiency thermal power generation; technologies for separating and collecting CO2 from emissions caused by thermal power generation; and super critical CO2 cycle power generation which can collect CO2 without the loss of energy while generating power.

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 developing a reactor core material that can reduce the amount of hydrogen in the event of a major accident as well as to protecting against cyber-attacks, we will continue ongoing efforts to further improve the safety of nuclear power plants.

With regard to hydroelectric power generation, Toshiba Group has developed a technology that improves water runner efficiency by applying Computational Fluid Dynamics (CFD*1) and also successfully increased output by renovating aged turbine facilities. Furthermore, we are also working to promote the introduction of renewable energy devices by using adjustable speed pumped storage power generation systems that are effective for power system stabilization.

As for geothermal power generation, we have a proprietary 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 (Photovoltaic)

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 2018, we began selling a 360-W photovoltaic module with a conversion efficiency of 22.1% for residential photovoltaic power generation systems, thereby helping reduce CO2 emissions.

*1
CFD: Computational Fluid Dynamics

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

The amount of power generated by some renewable energy technologies varies with the weather, so generating power with renewable energy is an unstable method for generating power. Expanding the use of this method requires controlling sharp output fluctuations and achieving load leveling through peak shifts by charging batteries when there is a grid power surplus and discharging electricity during the day when there is a grid power shortage. 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 suspended thyristor 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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Comprehensive energy coordination ―Power demand forecasting technology, etc.―

As renewable energies increase, whose power generation significantly varies depending on the weather and meteorological conditions, a technology to fill the gap between power supply and demand that fluctuates every second has become more and more important. We have been developing virtual power plant (VPP) technology to optimally control multiple batteries (Store) using IoT, a technology to accurately forecast power demand (Use) and power generation (Generate) from renewable energy, and other technologies as technologies that achieve a stable and economical supply of power through comprehensive efforts to generate, transmit, and store energy.

Both our high accuracy weather forecasting technology based on a numerical weather model and high accuracy forecasting technology for power demand and solar power generation that combines a technology to use weather big data for AI have received goods results*2 in the "Electricity Load Forecasting Technology Contest (June–October 2017)*3" and the "Contest on Technology for Predicting Solar Energy Production (February–June 2019)*4" hosted by major power companies.

*2
Best award in the "First Electricity Load Forecasting Technology Contest," and Grand prize in the "PV in HOKKAIDO Contest on Technology for Predicting Solar Energy Production"
*3
A contest hosted by TEPCO Power Grid that competes for accuracy in methods for forecasting power demand in the service area operated by the company.
*4
A contest hosted by TEPCO and Hokkaido Electric Power that competes for accuracy in forecasting power demand at a solar power plant specified in advance as well as the practical use and potential of the method.

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