electricity

energy & environment
correlation-of-hydrogen-cost-wtih-electrolyzer-capacity
How to produce hydrogen - 3

Water electrolysis, water splitting driven by renewable electric power, can contribute to achieving the sustainable society. Its history and overview were summarized in the previous post. This post takes a step ahead, and shall detail the price of hydrogen produced by the water electrolysis.

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energy & environment
history-of-water-electrolysis
How to produce hydrogen - 2

The previous post touched upon the methodes of producing hydrogen (see How to produce hydrogen - 1). "How to produce hydrogen using renewable electricity" - one solution to this challenge is water electrolysis. Most of you supposedly learnt about water electrolysis in high school. This post introduces briefly the water electrolysis, with a bit more details than what you had learnt in the past.

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energy & environment
renewable-energy-potential-japan
Can renwable power generated in Japan meet the energy demand in Japan?

Ultimately, energy demand needs to be fulfilled by renewable power in a sustainable society. In the case of Japan, is it possible to meet the energy demand only by utilizing renewable energy?

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energy & environment
hydrogen-as-energy-carrier
Hydrogen as an energy carrier?

Renewable electric power is converted into energy carrier for storate or transportation. The energy carrier preferably contains "large amount of energy" in "small volume, small weight". What is the most suitable material for the energy carrier? A close look at the periodic table may point to hydrogen, located at that top-left corner. This posts discusses the characteristics of hydrogen as an energy carrier.

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energy & environment
potential-map-of-renewable-energy-Japan
Issues associated with renewable energy utilization

The expantion of renewable energy utilization is now a common theme globally. However, just keeping to increase installation of renewable energy facilites woud not achive the sustainable circulation of enregy in our society. This post addresses the gap in locations for electric power generation and usage.

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energy & environment
electricity-by-sourses-in-countries
Power generation mix in countries

The power generation mix means the composition of electric power generation by types of power generation methods. This post highlights the difference in the mix among countries, and reason behind the difference.

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energy & environment
energy-conversion-for-electricity-generation
Energy conversion involved in generation of electric power

The process of electric power generation converts the form of energy, from that of fuels, into electric power. This post summarizes the forms of enregy involved in such processes.

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