Best practices for analyzing the direct energy use of blockchain technology systems: Review and policy recommendations

The aim of the manuscript was to present the collective results of research on the profitability of using various renewable sources in Poland with the greatest development potential. In the paper, the economic parameters of various investment projects were determined and calculated, i.e., Net Capital Value (NPV), Internal Rate of Return (IRR) and the Period of Return on Invested Capital (PBT). The economic assessment of the use of RES technologies was supplemented with the assessment of environmental benefits. The ecological criterion adopted in the study was the assessment of the potential and costs of reducing greenhouse gas emissions as a result of replacing fossil fuels with renewable energy technologies. On the basis of the constructed economic model to assess the profitability of investments, it has been shown that the analyzed projects will start to bring, depending on their type and technical specification, measurable economic benefits in the form of a reduction in the amount of energy purchased on an annual basis and environmental benefits in the form of reduction of carbon dioxide emissions to the atmosphere. Moreover, the calculations show a high potential for the use of certain renewable sources in Poland, which contributes to the fulfillment of energy and emission obligations towards the EU. The analyzes and research of the Polish energy market with the use of the presented models have shown that the project is fully economically justified and will allow investors to make a rational decision on the appropriate selection of a specific renewable energy source for their investment. The presented economic models to assess the profitability of investments in renewable energy sources can be successfully used in other countries and can also be a starting point for a discussion about the direction of energy development. Due to the lack of collective, original and up-to-date research on the domestic market, the manuscript provides the reader with the necessary knowledge regarding the legitimacy of using renewable energy sources, investment and environmental profitability.

Section: Introductionmentioning

confidence: 99%

The Potential of Using Renewable Energy Sources in Poland Taking into Account the Economic and Ecological Conditions

Niekurzak

2021

“…The energy transition process is characterized by the interplay of old and new technologies as well as a structural link with other sectors such as information and communication technology (ICT) [19]. Blockchain-based technologies can play an important role in the energy transformation, offering profitable local energy trading, accelerating renewable energy production, and providing grids with new demand-response resources to increase grid stability [20].…”

Section: Literature Reviewmentioning

confidence: 99%

Evaluation of Energy Transition Scenarios in Poland

Kochanek

2021

Long-term energy scenarios form the basis of energy policy-making. In practice, the use of energy scenarios for the effective creation of energy policy differs in each country. Therefore, the aim of this study is to present two possible scenarios for the development of the Polish energy sector, resulting from the current national policy and international commitments of Poland. The study examined the development of the energy mix in Poland in the 2040 perspective, in accordance with the strategic document Energy Policy of Poland (PEP 2040). The analysis took into account four diagnostic features: electricity production, electricity price, the share of renewable energy sources (RES) in final energy consumption, and CO2 emission reduction. In addition, the analysis allowed for the presentation of the implications for the Polish economy and society after the application of the diversified variant with nuclear energy and the diversified variant with natural gas. Both scenarios assume too slow development of RES, and the ambivalent attitude of the Polish political elite towards zero-emission energy sources significantly hinders the development of some of its forms (e.g., onshore wind energy). Unfortunately, both the first and second variants entail a large increase in electricity prices, which will affect the entire economy and increase the level of energy poverty among Poles. The study provides strategic insights on the consequences of Poland’s choice of a specific energy transformation scenario. The results may serve as a starting point for understanding Poland’s restraint towards achieving zero emissions and contribute to the discussion of the direction of development of the Polish energy sector.

“…We propose to fill this research gap with this study. We aimed to build a model of energy consumption with a breakdown into electricity and natural gas in a walking beam furnace, depending on the length of the rolling campaign and the agreed rolling program [21,22]. The end result of our work is a model that allows the calculation of the energy costs of material processing depending on: steel grade and mass of the ingot, time soaking in the furnace, thickness, and bandwidth [23,24].…”

Section: Introductionmentioning

confidence: 99%

Modeling of Energy Consumption and Reduction of Pollutant Emissions in a Walking Beam Furnace Using the Expert Method—Case Study

Niekurzak

Mikulik

2021

This paper presents an algorithm for modeling electricity and natural gas consumption in a walking furnace with the use of artificial intelligence and simulation methods, depending on the length of the rolling campaign and the established rolling program. This algorithm is the basis for the development of a proposal for a set of minimum requirements characterizing the Best Available Techniques (BAT) for beam furnaces intended for hot rolling, taking into account the requirements set out in national regulations and the recommendations described in the BREF reference documents. This information should be taken into account when drawing up an application for an integrated permit, as well as when setting emission limit values. Based on the constructed algorithm, it was shown that depending on their type and technical specification, the analyzed projects will offer measurable economic benefits in the form of reducing the amount of energy consumed by 1,076,400 kWh during the implementation of 50 rolling campaigns to reduce gas by 14,625 GJ and environmental benefits in the form of reduction of pollutant emissions into the atmosphere 80–360 g/Mg. The constructed algorithm was validated in the Dosimis-3 program, based on a discrete event-driven simulation. Thanks to this representation of the model, its user can interactively participate in changes that take place in the model and thus evaluate its behavior. The model, verified in real conditions, can be the basic source of information for making effective operational technological decisions related to the preparation of production at the rolling mill as part of planning and long-term activities.