Demand For Fuels Research Articles

PV array based EV charging station with efficient charging and storage system

Renewable energy is a type of energy that may be produced from a variety of resources, including sunlight, wind, tides, geothermal, etc. It delivers sustainable, clean energy that is derived from renewable natural resources. More renewable energy will be used, which will reduce the cost and demand for fossil fuels. The primary uses of solar photovoltaic energy include the production of electricity and heat for a variety of appliances. The development of solar-powered cars was made possible by recent breakthroughs. This study discusses the design and development of a charge controller-based solar charging system for electric automobiles. The suggested system's implementation will lower the price of power and charging and discharging losses. Additionally, one of the suggested solar charging systems is among the steps taken to create a green campus. This paper will show how to create a solar-powered electrical vehicle system and analyzes its performance.

Processing on Curcuma longa waste oil-diesel blends for using as better alternative to diesel fuel

Technology advancements are growing in an exponential rate. Automobile sector is getting developed day by day where modern innovations are viewed with different features for the human society. Inspite of having various renewable energy sources, the demand for the fossil fuels still exists for meeting out the requirements of the growing application sides. In the present work, different blends of Curcuma longa waste neat oil samples have been prepared and mixed with diesel at different volume fractions. Nano metal oxide particles such as cerium oxide and Nano Egg Shell Powder (NESP) have been added with the prepared fuel samples in order to achieve better evaporation, atomization, better air-fuel mixing, considerable reduction in ignition delay and best flame sustainability nature. The prepared waste oil samples have been tested under four different loading conditions such as 30, 60, 90 and 120 N. The performance characteristics such as Brake Thermal Efficiency (BTE), Brake Specific Fuel Consumption (BSFC), Exhaust Gas Temperature (EGT), % of carbon monoxide emission, % of carbon dioxide emission, % of hydrocarbon emission and % of NOX emission have been measured for the tested blends. From the results, the optimal sample which exhibits improved desirable characteristics has been suggested. Grey Relational Analysis (GRA) has also been used as a multi objective optimization tool in order to find out the best composition of the Curcuma longa waste oil – diesel blend in order to achieve better desirable properties. ANOVA technique has been used to identify the most influencing input factor in achieving better characteristics for the oil blends.

ПРОМЫШЛЕННЫЕ ТЕХНОЛОГИИ ПОЛУЧЕНИЯ НИЗКОЗАСТЫВАЮЩИХ ДИЗЕЛЬНЫХ ТОПЛИВ

One of the main tasks of the development of the oil refining industry at the moment is: involvement in the processing of increasingly heavy oils with a high content of high-boiling fractions and residues, sulfur, resins and metals; increasing the depth of oil refining; tightening environmental requirements for fuel quality; meeting the growing demand for high-quality motor fuels. At the same time, the climatic conditions of the Russian Federation cause a great need for high-quality low-pour-ing diesel fuels, which is currently provided by less than half. Taking into account the special requirements in the northern regions of Russia for the lowtemperature characteristics of motor fuels, the task of producing low-solidification diesel fuels that meet modern and future environmental requirements is especially relevant. This article describes the current industrial technologies for the production of low pour point diesel fuels, their advantages and disadvantages, as well as their prevalence in the world.

Comparative Study of Production of Biodiesel Utilizing Calcinated Eggshell and Immobilized Lipase-Eggshell Catalysts by Waste Cooking Oil, Catalysts Characterization and Yield Optimization

Due to the high demand, cost and environmental toxicity of fossil fuels, mainly petroleum and diesel, there is a massive demand for alternative fuels based on biological origin. The production of biodiesel from cheap resources has gained more attention. Present study conducted biodiesel production from waste cooking oil utilizing calcinated eggshells and immobilized lipase. The eggshell was calcinated at temperature ranges from 500-800 ºC and characterized by TGA, SEM, XRD and FTIR analysis; the study of characteristics of calcinated eggshell was helpful in the production of biodiesel, it is around ~42% yield production achieved at 60 ºC, 1000 rpm revolution of stirrer for O/A (oil/alcohol) molar ratio 1:6. Now the lipase of activities 40 μ/g immobilized with eggshell, the eggshell-lipase catalyst (ELC) gives the yield of ~92% at 40 °C, 500 rpm revolution of stirrer and O/A molar ratio 1:6 after transesterification process on waste cooking oil (WCO) with calcined eggshell and reusability application of ELC. The production of biodiesel by immobilized catalyst at a higher temperature will reduce the thermal stability of lipase. To get the maximum biodiesel yield, the transesterification process must undergo at an optimum higher temperature. This is overcome by immobilizing the commercial lipase with an eggshell that can withstand even higher temperatures (40-45 ºC) without losing its activities. The processes and optimization are globally integrated to improve the feasible evaluation of economic improvement for biodiesel production.

Exploration of combustion behavior in a compression ignition engine fuelled with low-viscous Pimpinella anisum and waste cooking oil biodiesel blends

In today's world due to a greater demand for fossil fuels, many alternative solutions such as extracting energy from waste and also from green biofuels have been offered. Among various studies, a new approach on the usage of low viscous Pimpinella anisum as a green biofuel with waste cooking oil biodiesel blend in the diesel engine efficiently has shed new light in the field of alternative renewable sources of energy. The aim of this work is to eliminate the usage of conventional fuel in a diesel engine by incorporating binary green fuel (Waste Cooking Oil biodiesel blended with Pimpinella anisum as low viscous oil) effectively. The enhancement of Waste Cooking Oil (WCO) biodiesel production was done by employing the transesterification process. Calcium oxide heterogeneous catalyst was prepared using eggshell and it was doped with barium of 4–8 %wt. to improve the catalytic efficiency. Pimpinella anisum oil with its promising properties such as low viscosity, high O2 content, and high boiling point is better suited to the diesel engine and was prepared by steam distillation method. Binary fuels were prepared by blending Pimpinella anisum oil (A) with WCO biodiesel (B) in 90%, 80%, and 70% of volume. The engine was tested with pure diesel and WCO biodiesel for comparative study. The addition of Pimpinella anisum elongated the period of ignition delay. Among the tested fuels, B20A80 has shown better heat release rate (HRR) and cylinder pressure, bringing brake thermal efficiency (BTE) near to that of diesel since the biodiesel operation decreases BTE in diesel engines. It also has shown the reduced formation of soot, Carbon monoxide (CO), and hydrocarbon (HC) emissions by 81.43%, 43.8%, and 18.6% respectively. A slight increase of 2.49% in Oxide of nitrogen (NOx) emissions in compared with the operation of diesel was observed.

Переход крупнейших экономик мира к углеродной нейтральности: сферы потенциального сотрудничества с Россией

In 2020, despite the global economic crisis caused by the COVID-19 pandemic, it became clear that decarbonization and energy transition had become strategic goals rather than market trends. Moreover, they have become part of the broader and more ambitious plans of the world’s largest economies to move toward carbon neutrality by the middle of the 21st century. These economies include the European Union, the U.S., China, Japan and Korea. In Russia, these trends are typically viewed through the prism of risk: carbon neutrality implies a dramatic decrease in demand for fossil fuels, the production and export of which still play a key role in the Russian economy. However, apart from the risk to traditional sources of income, the global transition to carbon neutrality creates new opportunities for the development and diversification of the Russian economy, as well as for international cooperation in new areas. This article is devoted to the general identification of such opportunities. The authors perform a content analysis of the official plans of the largest economies related to achieving carbon neutrality by 2050–60. The main areas in which actions will be taken are identified. The current state of the corresponding industries in Russia and the possibilities for improvement are investigated. On the basis of this analysis, promising directions for the development of the Russian economy are proposed in which the implementation of large-scale international economic cooperation is possible in the coming decades.

Modeling the Effects of Implementation of Alternative Ways of Vehicle Powering

The trend to replace traditional fossil fuel vehicles is becoming increasingly apparent. The replacement concerns the use of pure biofuels or in blends with traditional fuels, the use of hydrogen as an alternative fuel and, above all, the introduction of electric propulsion. The introduction of new types of vehicle propulsion affects the demand for specific fuels, the needs for new infrastructure, or the nature of the emissions to the environment generated by fuel production and vehicle operation. The article presents a mathematical model using the difference of two logistic functions, the first of which describes the development of the production of a specific type of vehicle, and the second, the withdrawal of this type of vehicle from traffic after its use. The model makes it possible to forecast both the number of vehicles of each generation as a function of time, as well as changes in energy demand from various sources and changes in exhaust emissions. The results of the numerical simulation show replacing classic vehicles with alternative vehicles increases the total energy demand if the generation of the next generation occurs earlier than the decay of the previous generation of vehicles and may decrease in the case of overlapping or delays in the creation of new vehicles compared to the course of the decay function of the previous generation. For electric vehicles, carbon dioxide emissions are largely dependent on the emissions from electricity generation. The proposed model can be used to forecast technology development variants, as well as analyze the current situation based on the approximation of real data from Vehicle Registration Offices.

Where is research on fossil fuels going in times of climate change? A perspective on chemical enhanced oil recovery

In a society where the global search for renewable and sustainable sources of energy, chemicals and materials has rapidly become a priority, due to the challenges posed by climate change, one may think that there is no place anymore for research regarding extraction and production of fossil fuels. However, there is no denying that coal, oil and gas still constitute the major source of energy worldwide by far, and humanity will be dependent on them still for decades. As a matter of fact, the global demand of fossil fuels is still increasing rather than decreasing. However, fossil resources are consumed at a much higher rate than they are generated. Only focusing on crude oil, the chances of finding new conventional reservoirs are nowadays low, and this conventional sources are quickly depleting, therefore it is necessary to turn more and more the attention to unconventional sources, such as carbonate reservoirs, tar sands, oil shales and deep off-shore reservoirs. Chemical enhanced oil recovery (cEOR) techniques are already well established in improving macroscopic and microscopic oil displacement, increasing oil production after primary and secondary methods are exhausted. However, these are mostly implemented in reservoirs that normally possess favorable conditions. Research can still contribute in making these processes more efficient and sustainable, especially for unconventional oil, for as long as we will need to extract fossil fuels. After supporting the idea that exploitation of fossil resources cannot stop just yet, this perspective article will highlight recent advances in the field of cEOR, mentioning new developments in traditional methods, such as polymer and surfactant flooding, as well as newer methods, such as nanoparticles, preformed particle gels, and smart waterflooding, plus the various possible new combinations (hybrid EOR). This paper will finally try to shortly outline future directions of cEOR research, with emphasis on sustainable methods, such as CO2 flooding combined with carbon capture and storage strategies, and newly available research tools, such as reservoir-on-a-chip and machine learning.Graphical abstract

Conversion of residual oat husk and pine sawdust by co-hydrothermal carbonization towards biofuel production for pellet stoves

Due to the impact of household wood-burning on air quality and the controversy related to its carbon neutrality, the development of cleaner technologies is highly required. Valorization of agro-waste emerges as a potential strategy to cover the demand for wood-based fuels partially. Oat husk (OH) is a widely available waste, and its combination with pine sawdust (PS) can be a suitable alternative towards biofuel production. In this work, the conversion of OH-PS mixtures via hydrothermal carbonization (HTC) was investigated. Optimization of HTC process parameters in terms of mixing ratio (21.7–78.3% of OH loading) and reaction temperature (164.6–235.4 °C) was performed using the response surface methodology to maximize hydrochar yield (HY) and higher heating value (HHV) and to minimize ash content (AC). The optimal hydrochar was obtained at 21.7% OH and 228.3 °C after the responses were simultaneously optimized. Remarkably, the application of the optimized hydrochar was evaluated by combustion tests using a domestic pellet stove. Results revealed decreased emissions from incomplete combustion such as CO and particulate matter, far lower than local and global requirements. Besides, hydrochar pellets also exhibited decreased moisture uptake and enhanced durability, facilitating transportation and storage, especially when facing adverse conditions. These findings demonstrate the valorization of residual biomass via HTC is a viable approach to tackle the air pollution control associated with residential heating.

Analysis of potential effects of renewable energy policy

Korea has announced its goal of achieving net zero carbon emissions by 2050 by accelerating its shift toward renewable energy. We examined the effects of increasing renewable energy use on the demands for fossil fuels and the power supply price for the Korean electric power generation sector. Using the estimated price elasticities of demand between energy inputs, we can calculate that a 1% increase in renewable energy would lead to a 0.06%, 0.35%, and 0.17% lower demand for coal, oil, and gas, respectively, ceteris paribus, possibly resulting in a potential CO2 reduction by as much as 0.173 × 106 tons in total. The null hypothesis of no contribution of increasing renewable energy on power generation costs was rejected. The simulation results show that renewable energy generation costs did not increase sufficiently to cause the power supply price to rise significantly over the period 2000–2015.

Application of Pyrolysis and Hydrothermal Liquefaction Process to Convert Bio-Fuel from Biomass

Rapid increase in demand of fuels creates the challenge for scientific community. The fossil fuel resources are declining day by day. So, biomass derived fuel starts to feel an exquisite alternative option, by reason of it develop from residual cooking oil, animal fats, or vegetable oils, etc. In present work biomass is converted into bio-fuel by the process of pyrolysis and hydrothermal liquefaction. But if it is compared with fossil fuel some undesirable properties have been found such like high oxygen content high water content, high corrosiveness and high viscosity etc. Directly biofuels cannot be used in IC engine due to their unwanted content in the fuel. Therefore upgrading of bio-fuel is needed to improve its properties for liquid fuels by the pre-treatment process of biomass. The purpose of biomass pre-treatment is the degradation of cellulose phibrils, lowering their crystallization and polymerization levels, hemicelluloses separation and degradation of cellulose. However application to this bio-fuel have been needed to enhance its properties for CI engine fuel using blending for direct use in engine application.

Green self-assembly of CuCe2(MoO4)4/montmorillonite-K10 nanocomposites; a promising solid-state hydrogen storage profile

Rapid scale-up of the technologies for clean energy production, conversion and storage have been adopted by many countries in order to reduce demand for fossil fuels. Primary renewable energy such as solar, wind, and hydro are developed for energy production particularly for electricity generation. However, there are still some deficiencies in direct use of primary renewable energy sources; therefore, secondary energy sources (or carriers) have been recently established as clean energy sources. Hydrogen is a type of secondary energy sources with almost low density and light weight; therefore, it must be stored in the form of liquid or gas. The storage of hydrogen in the form of liquid requires very low temperature. Solid-state hydrogen storage on the surfaces of solids or within solids is a promising solution to above shortcomings for high-density energy storage. Herein, multi-layers solid-state materials with ability of hydrogen adsorption are presented, for the first time, including “mixed metal oxide (MMO) nanostructures” and “silicate layers”. The MMO is CuCe2(MoO4)4 nanostructures which synthesized via Pechini method in front of various chelating agents such as trimesic acid, maleic acid, succinic acid, and malonic acid, while the silicate layer is nanoclay montmorillonite K10. In this study, the experimental observations reveal a pure formation of CuCe2(MoO4)4 nanostructures in malonic acid at 500 °C, with almost regular nanosized morphology of 20–25 nm. The selected sample is then used for nanocomposite formation by dispersing the CuCe2(MoO4)4 nanostructures into the montmorillonite K10 solution. The final nanocomposites exhibit a superior electrochemical hydrogen storage performance, in terms of “maximum discharge capacity of ∼ 3750 mAh/g)” and “efficiency of about 70%” in an alkaline medium. It must be mentioned that though the maximum discharge capacity of the CuCe2(MoO4)4 nanostructures is higher than nanocomposites (for example ∼ 6000 mAh/g), but the efficiency (discharge/charge) is lower (∼48%). It can be emphasized that this nanocomposite can be applied as promising host in an electrochemical hydrogen storage system, which can meet the U.S. Department of Energy (DOE) hydrogen storage targets.

Optimal Scheduling of Campus Microgrid Considering the Electric Vehicle Integration in Smart Grid.

High energy consumption, rising environmental concerns and depleting fossil fuels demand an increase in clean energy production. The enhanced resiliency, efficiency and reliability offered by microgrids with distributed energy resources (DERs) have shown to be a promising alternative to the conventional grid system. Large-sized commercial customers like institutional complexes have put significant efforts to promote sustainability by establishing renewable energy systems at university campuses. This paper proposes the integration of a photovoltaic (PV) system, energy storage system (ESS) and electric vehicles (EV) at a University campus. An optimal energy management system (EMS) is proposed to optimally dispatch the energy from available energy resources. The problem is mapped in a Linear optimization problem and simulations are carried out in MATLAB. Simulation results showed that the proposed EMS ensures the continuous power supply and decreases the energy consumption cost by nearly 45%. The impact of EV as a storage tool is also observed. EVs acting as a source of energy reduced the energy cost by 45.58% and as a load by 19.33%. The impact on the cost for continuous power supply in case of a power outage is also analyzed.

Increased Efficiency of PEM Water Electrolyzers through Operating Temperature and Pressure Optimization

Green hydrogen enables the reduction of greenhouse gas emissions as it can replace fossil fuels in various areas of application. Given today's high demand for fossil fuels, there are challenges in producing cost-competitive green hydrogen. A vast amount of renewable electricity must be generated and converted into hydrogen, which requires much space and rare materials. Therefore, it is reasonable to improve the efficiency of the energy converters involved. Although the efficiency levels can be increased through components development, the optimization of the operating conditions is another innovative way to improve (commercially) available electrolyzer systems. In this talk, a model is introduced that comprises the description of electrolyzers from electrodes to the product-gas processing. Overpotential at stack level, the heat balance of the whole system, and the compression of the product gases are taken into account with regard to their impact on the overall system efficiency. Our analysis results are crucial in terms of defining the optimal operating temperature and pressure, as both parameters are no constants but highly depend on the operating conditions and the system configuration.By comparing systems that use different membrane thicknesses for instance, it can be seen that the efficiency and optimal pressure decrease with increasing thickness, while interestingly no safety problems due to hydrogen permeation across thin membranes.1 On the other hand, the results indicate that the notion of ‘the higher the temperature the higher the efficiency’ has no general validity. Fortunately, the model reveals that an analytical solution exists to calculate the optimal operating temperature in special cases.2 Moreover, this solution is independent of the system configuration and only depends on the operating point and pressure. In summary, novel ideas for the configuration and operation of electrolyzers are presented in this talk in order to obtain the highest possible efficiency from existing materials and components. Heavily depending on the operating conditions and cell voltage, the advantage can be up to 10% compared to the current operating strategy. Scheepers, F.; Stähler, M.; Stähler, A.; Rauls, E.; Muller, M.; Carmo, M.; Lehnert, W., Improving the Efficiency of PEM Electrolyzers through Membrane-Specific Pressure Optimization. Energies 2020, 13 (3).Scheepers, F.; Stähler, M.; Stähler, A.; Rauls, E.; Müller, M.; Carmo, M.; Lehnert, W., Temperature optimization for improving polymer electrolyte membrane-water electrolysis system efficiency. Applied Energy 2020, 116270.

Modeling of the fired preheater of crude oil considering the effect of geometrical parameters on fuel consumption

AbstractProminent equipment with a very high demand for fuels in refineries is the fired preheater of crude oil. There are two main reasons to investigate the energy usage of such fired heaters. First, this is essential to the economic value of the refinery process unit and second, this is located at the beginning of the process line, which causes inefficient performance or damage in downstream equipment if it is not tuned properly. This paper concentrates on the thermal modeling of a fired heater of crude oil to evaluate the effect of influential parameters on fuel consumption. As the number of variables is markedly high, and considering the complexity of thermal modeling, all equations in a code yield predefined heater efficiency. Results from the model show that the increase in heater size yields a decrease in efficiency. It was also found that with a constant dimension of the fired heater, change in the number of pipes is much less influential rather than more inexpensive ideas like increasing speed of the burning gas on reduction of the fuel consumption. In other words, it was found that a distance of 500–650 mm from the center to the center distance of the pipes is the optimal distance to reduce fuel consumption.

Harnessing landfill gas (LFG) for electricity: A strategy to mitigate greenhouse gas (GHG) emissions in Jakarta (Indonesia)

Due to its increasing demands for fossil fuels, Indonesia needs an alternative energy to diversify its energy supply. Landfill gas (LFG), which key component is methane (CH4), has become one of the most attractive options to sustain its continued economic development. This exploratory study seeks to demonstrate the added value of landfilled municipal solid waste (MSW) in generating sustainable energy, resulting from CH4 emissions in the Bantargebang landfill (Jakarta). The power generation capacity of a waste-to-energy (WTE) plant based on a mathematical modeling was investigated. This article critically evaluated the production of electricity and potential income from its sale in the market. The project's environmental impact assessment and its socio-economic and environmental benefits in terms of quantitative and qualitative aspects were discussed. It was found that the emitted CH4 from the landfill could be reduced by 25,000 Mt annually, while its electricity generation could reach one million kW ⋅h annually, savings on equivalent electricity charge worth US$ 112 million/year (based on US' 8/kW ⋅ h). An equivalent CO2 mitigation of 3.4 × 106 Mt/year was obtained. The income from its power sale were US$ 1.2 ×106 in the 1st year and 7.7 ×107US$ in the 15th year, respectively, based on the projected CH4 and power generation. The modeling study on the Bantargebang landfill using the LFG extraction data indicated that the LFG production ranged from 0.05 to 0.40 m3 per kg of the landfilled MSW. The LFG could generate electricity as low as US' 8 per kW ⋅ h. With respect to the implications of this study, the revenue not only defrays the cost of landfill's operations and maintenance (O&M), but also provides an incentive and means to further improve its design and operations. Overall, this work not only leads to a diversification of primary energy, but also improves environmental protection and the living standard of the people surrounding the plant.

A Review of Hydrogen as a Fuel in Internal Combustion Engines

The demand for fossil fuels is increasing because of globalization and rising energy demands. As a result, many nations are exploring alternative energy sources, and hydrogen is an efficient and practical alternative fuel. In the transportation industry, the development of hydrogen-powered cars aims to maximize fuel efficiency and significantly reduce exhaust gas emission and concentration. The impact of using hydrogen as a supplementary fuel for spark ignition (SI) and compression ignition (CI) engines on engine performance and gas emissions was investigated in this study. By adding hydrogen as a fuel in internal combustion engines, the torque, power, and brake thermal efficiency of the engines decrease, while their brake-specific fuel consumption increase. This study suggests that using hydrogen will reduce the emissions of CO, UHC, CO2, and soot; however, NOx emission is expected to increase. Due to the reduction of environmental pollutants for most engines and the related environmental benefits, hydrogen fuel is a clean and sustainable energy source, and its use should be expanded.

Influence of biodiesel blends produced in Colombia on a Diesel engine

Diesel engines have dominated the heavy duty and passenger vehicle market in the past 30 years. Consequently, the oil-derived fuels demand and the amount of pollutant emissions have witnessed exponential growth during the last three decades. Although Diesel engines present the advantage of higher efficiency and, therefore, lower levels of CO2 emissions, they produce high levels of NOX and particulate matter. In order to face these difficulties, the use of alternative fuels started booming in the early 2000s and continue to gain influence today. Biodiesel stands out from the alternative fuels’ selection for its ease of use, production, storage and potential to reduce levels of particles, CO, HC and CO2. The main goal of this research is to experimentally determine the influence of palm oil biodiesel produced in Colombia on a Diesel engine’s behavior in terms of engine performance and pollutant emissions. As different mixtures of commercial Diesel and biodiesel at different operating conditions were tested, the results showed that it is possible to maintain the engine’s performance at acceptable levels and to, in some cases, reduce smoke density and NOX levels.

Challenges in cellulase bioprocess for biofuel applications

Increasing population and industrialization caused increased demand for liquid fossil fuels which in turn increases the greenhouse gas emission. Bioethanol produced from lignocellulosic biomass via enzymatic route is a potential alternative to fossil fuels and is environmentally sustainable. Cellulases have been regarded as the limiting factor for bioethanol production from lignocellulosic biomass via enzymes. In the last few decades advances in bioprocesses led to reduction in the cost of cellulases by several folds, enabling bioethanol production to become cost-effective. This is the reason for existence of commercial plants for bioethanol production, however; still there are scope for further improvement in bioprocess for cellulase production and research is ongoing worldwide. Researchers face huge challenge while moving from flask and bioreactor research outcomes from a laboratory scale to the pilot scale production, which has been rarely discussed. This review will present those challenges and its probable solutions. Though commercial cellulases are available, it is highly required to have in-house cellulase production technology to be self-reliant. On-site and integrated cellulase production configuration is popular as it seems to be cost-effective. This review will address advances in bioprocesses and challenges for cellulase production which have surfaced in the last decade.

Decline in Share Prices of Energy and Fuel Companies on the Warsaw Stock Exchange as a Reaction to the COVID-19 Pandemic

Many factors influence the prices of energy commodities and the value of energy and fuel companies. Among them there are the following factors: economic, social, environmental and political, and recently also the COVID-19 pandemic. The aim of the paper is to examine what the probability and intensity of a decrease in the prices of shares of energy and fuel companies listed on the Warsaw Stock Exchange (Poland) was during the first wave of the pandemic in the first quarter of 2020. The study used the survival analysis methods: the Kaplan-Meier estimator, the test of equality of duration curves and the Cox non-proportional hazards model. The analysis showed that the probability and intensity of price decline of energy and fuel companies in the initial period was the same as that of other companies. The differences become apparent only after 50 days from the established maximum of their value. The risk of price declines in energy and fuel companies increased significantly. This situation was related both to a temporary reduction in demand for energy and fuels, pandemic restrictions introduced in individual countries and the behaviour of stock market investors.