Abstract
This paper discusses the potential of green hydrogen production in a case study of a Slovenian hydro power plant. To assess the feasibility and eligibility of hydrogen production at the power plant, we present an overview of current hydrogen prices and the costs of the power-to-gas system for green hydrogen production. After defining the production cost for hydrogen at the case study hydro power plant, we elaborate on the profitability of hydrogen production over electricity. As hydrogen can be used as a sustainable energy vector in industry, heating, mobility, and the electro energetic sectors, we discuss the current competitiveness of hydrogen in the heating and transport sectors. Considering the current prices of different fuels, it is shown that hydrogen can be competitive in the transport sector if it is unencumbered by various environmental taxes. The second part of the paper deals with hydrogen production in the context of secondary control ancillary service provided by a case study power plant. Namely, hydrogen can be produced during the time period when there is no demand for extra electric power within a secondary control ancillary service, and thus the economics of power plant operation can be improved.
Highlights
Global energy consumption, greenhouse gas emissions, and air pollution continue to increase; it is necessary to develop and introduce new alternatives to fossil fuels
Hydrogen can be produced during the time period when there is no demand for extra electric power within a secondary control ancillary service, and the economics of power plant operation can be improved
The document notes that hydrogen as a multipurpose energy carrier can be used in the field of transport, can serve as a basis for the production of synthetic fuels and as a medium for storing energy obtained from renewable sources
Summary
Greenhouse gas emissions, and air pollution continue to increase; it is necessary to develop and introduce new alternatives to fossil fuels. Global hydrogen production from fossil fuels is currently responsible for around 830 million tonnes of carbon dioxide per year. The reason is the current price of technological equipment for green hydrogen production, storage, and distribution, which is not yet a subject of mass production and is still highly priced This leads to high capital expenditures of systems based on green hydrogen technologies, which results in a high price of generated green hydrogen. This reduces hydrogen’s economic competitiveness in comparison to other fuels, natural gas, and prevents green hydrogen technologies from being widely adopted. 3 briefly describesin the technical case-study HPP and defines the capital expenditures (CapEx) and operating expenses (OpEx) for the
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